Receivers and speakers

Hearing instrument receivers

• Advanced noise reducing options
• Custom-crafted performance
• Improved durability

Knowles’ balanced armature technology platform uplifts the design and development of receivers for more advanced hearing aid solutions.
Precise, custom-crafted performance is facilitated by such proprietary design possibilities as Pantograph™ higher audio output, Ferrofluid™ damping, Wide Bandwidth for high-frequency hearing loss, D-Amp™ internal power management, and Vibration Isolation for superior gain-before-feedback.

Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

BK series


Knowles balanced-armature, magnetic technology to give high efficiency, stability and reliability.

Features

• High sensitivity
• Responses include standard and broader band
• Low distortion
• Self-shielded for low magnetic radiation
• Wide range of port locations and impedances
• 2 and 3 terminal versions

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
BK BK-21600-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 100 730 285 No 124 137 Standard Undamped
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(181.31 kB)
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(1.37 MB)
BK BK-21604-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 895 6000 2320 No 124 137 Standard Undamped
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(174.80 kB)
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(1.37 MB)
BK BK-21606-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 250 1500 600 No 124 137 Standard Undamped
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(181.63 kB)
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(1.37 MB)
BK BK-21610-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 121 12S 21 145 60 No 124 137 Standard Undamped
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(177.10 kB)
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(1.37 MB)
BK BK-21612-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 500 2360 945 No 124 137 Standard Undamped
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(181.17 kB)
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(1.37 MB)
BK BK-21613-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 1S 160 1200 450 No 124 137 Standard Undamped
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(182.70 kB)
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(1.49 MB)
BK BK-21615-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 160 1200 450 No 124 137 Standard Undamped
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(182.88 kB)
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(1.48 MB)
BK BK-21618-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 2S 250 1500 600 No 124 137 Standard Undamped
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(180.21 kB)
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(1.39 MB)
BK BK-21669-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12C 10.5 49 24 No 124 137 Standard Undamped
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(106.04 kB)
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(1.42 MB)
BK BK-21706-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 68 500 200 No 124 137 Standard Undamped
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(182.42 kB)
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(1.48 MB)
BK BK-21839-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 126 12S 250 750 380 No 124 137 Standard BB
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(193.52 kB)
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(1.37 MB)
BK BK-21911-033 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 56 400 150 No 124 137 Standard Undamped
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(185.81 kB)
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(1.48 MB)
BK BK-21941-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 570 3560 1300 No 124 137 Standard Undamped
BK BK-21968-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 100 730 285 No 124 137 Standard Undamped
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(186.80 kB)
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(1.48 MB)
BK BK-23110-017 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 250 1500 600 No 124 137 Standard Undamped
BK BK-23113-017 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 100 730 285 No 124 137 Standard Undamped
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(186.50 kB)
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(1.48 MB)
BK BK-23134-000 7.87mm x 5.59mm x 4.04mm (.250in x .170in x .119in) 118 12S 100 730 285 No 124 137 Standard Undamped
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(179.92 kB)
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(1.37 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

CI series


Knowles’ largest and most powerful receiver. With its high efficiency and a 143dB SPL maximum output, the CI receiver provides high acoustic power.

Features

• 143dB SPL maximum output
• Undamped response
• Two and Three-terminal electrical connection
• Various port locations
• Wide range of coil impedances

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
CI CI-22746-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12C 51 175 0 No 130 143 Standard Undamped
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(127.27 kB)

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(632.06 kB)
CI CI-22748-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12C 75 250 0 No 130 143 Standard Undamped
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(128.87 kB)

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(632.06 kB)
CI CI-22762-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 51 175 0 No 130 143 Standard Undamped
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(136.61 kB)

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(841.32 kB)
CI CI-22764-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 75 250 0 No 130 143 Standard Undamped
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(131.43 kB)

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(841.32 kB)
CI CI-22955-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12C 20 68 0 No 130 143 Standard Undamped
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(130.81 kB)

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(632.06 kB)
CI CI-22960-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12C 100 400 0 No 130 143 Standard Undamped
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(128.84 kB)

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(632.06 kB)
CI CI-23818-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 51 139 127 No 130 143 Standard Undamped
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(133.66 kB)

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(796.14 kB)
CI CI-26697-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 2S 20 68 0 No 130 143 Standard Undamped
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(189.27 kB)

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(766.13 kB)
CI CI-26890-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12S 20 68 0 No 130 143 Standard Undamped
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(140.63 kB)

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(1.62 MB)
CI CI-28203-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12S 75 250 0 No 130 143 Standard Undamped
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(134.80 kB)

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(1.73 MB)
CI CI-28204-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12S 100 400 0 No 130 143 Standard Undamped
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(134.60 kB)

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(1.73 MB)
CI CI-28220-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12S 20 68 0 No 130 143 Standard Undamped
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(134.53 kB)

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(1.73 MB)
CI CI-28226-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 11C 75 250 0 No 130 143 Standard Undamped
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(638.86 kB)
CI CI-28267-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 2S 75 250 0 No 130 143 Standard Undamped
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(190.51 kB)

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(1.79 MB)
CI CI-28268-028 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12S 51 175 0 No 130 143 Standard Undamped
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(146.15 kB)

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(1.73 MB)
CI CI-28329-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 2S 51 175 0 No 130 143 Standard Undamped
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(190.65 kB)

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(811.23 kB)
CI CI-28348-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 278 1000 0 No 130 143 Standard Undamped
CI CI-28352-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 2S 20 68 0 No 130 143 Standard Undamped
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(188.85 kB)

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(766.13 kB)
CI CI-28409-A42 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 100 400 0 No 130 143 Standard Undamped
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(140.30 kB)

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(796.14 kB)
CI CI-28417-A42 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 20 68 0 No 130 143 Standard Undamped
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(139.54 kB)

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(796.14 kB)
CI CI-28434-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 24 100 0 No 130 143 Standard Undamped
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(137.78 kB)

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(796.14 kB)
CI CI-28487-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 1S 24 100 0 No 130 143 Standard Undamped
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(139.97 kB)

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(841.32 kB)
CI CI-28512-017 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 12C 54.3 200 0 No 130 143 Standard Undamped
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(136.05 kB)

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(632.06 kB)
CI CI-28597-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125 11S 20 68 0 No 130 143 Standard Undamped
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(133.07 kB)

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(809.09 kB)
CI CI-30050-000 9.47mm x 7.18mm x 4.10mm (.373in x .283in x .162in) 125.5 1S 9.2 46 22 No 130 143 Standard Undamped
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(146.45 kB)

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(1.77 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

DFK series


The DFK receiver is two FK receivers joined cover to cover to provide significant reduction in vibration signature while increasing output power by 6dB. Ideal for high gain CIC and ITC applications.

Features

• 130dB SPL maximum output
• Low Vibration

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
DFK DFK-30041-000 5.00mm x 2.73mm x 3.86mm (.197in x .108in x .152in) 99.5 12S 98 160 133 No 114 130 Standard III
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(145.56 kB)
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(3.90 MB)
DFK DFK-30060-000 5.00mm x 2.73mm x 3.86mm (.197in x .108in x .152in) 99.5 12S 362 616 457 No 114 130 Standard III
DFK DFK-30061-000 5.00mm x 2.73mm x 3.86mm (.197in x .108in x .152in) 99.5 12S 440 768 561 No 114 130 Standard III
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

DTEC series


The DTEC Series combines two TEC receiver elements with a single sound port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single receiver.

Features

• Dual elements with single sound port
• Increased output
• Reduced vibration
• Enable hi-fi designs

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
DTEC DTEC-30008-000 7.87mm x 4.09mm x 5.59mm (.310in x .161in x .220in) 123 12S 23 39 35 No 128 142 Standard Undamped
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(166.94 kB)
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(1.98 MB)
DTEC DTEC-30265-000 7.87mm x 4.09mm x 5.59mm (.310in x .161in x .220in) 123 12S 15 22 No 128 142 Standard Undamped
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(172.82 kB)
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(1.91 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

EC/FEC series


Knowles’ balanced-armature, magnetic technology to give high efficiency, stability and reliability. Available with Knowles’ FerrofluidTM technology.

Features

• High sensitivity
• Ferrofluid available for screenless damping and improved shock performance
• Low distortion
• Self-shielded for low magnetic radiation
• Wide range of impedances
• 2 and 3 terminal versions

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
EC/FEC EC-23095-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 376 1600 800 No 116 130 Standard Undamped
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(136.95 kB)
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(2.65 MB)
EC/FEC EC-23096-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 196 840 425 No 116 130 Standard Undamped
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(136.73 kB)
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(2.65 MB)
EC/FEC EC-23097-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 92 400 200 No 116 130 Standard Undamped
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(137.65 kB)
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(2.65 MB)
EC/FEC EC-23098-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 196 840 425 No 116 130 Standard Undamped
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(139.07 kB)
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(2.76 MB)
EC/FEC EC-23104-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 376 1600 800 No 116 130 Standard Undamped
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(139.50 kB)
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(2.76 MB)
EC/FEC EC-23839-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 92 400 200 No 116 130 Standard Undamped
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(158.03 kB)
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(2.59 MB)
EC/FEC EC-23840-XXX 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 92 400 200 No 116 130 Standard Undamped
EC/FEC EC-23952-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 51 200 100 No 116 130 Standard III
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(152.97 kB)
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(2.65 MB)
EC/FEC EC-26368-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 26.3 100 54 No 116 130 Standard III
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(139.13 kB)
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(2.65 MB)
EC/FEC EC-26468-A33 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 113.5 12S 110 280 165 No 116 130 Standard Undamped
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(181.30 kB)
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(2.65 MB)
EC/FEC EC-27054-A33 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 196 840 425 No 116 130 Standard Undamped
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(180.35 kB)
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(2.65 MB)
EC/FEC EC-27401-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 48 152 80 No 116 130 Standard Undamped
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(138.31 kB)
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(2.66 MB)
EC/FEC EC-27817-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 108 12S 40.5 154 78.6 No 116 130 Standard Undamped
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(137.95 kB)
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(2.65 MB)
EC/FEC EC-27906-000 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 113 12S 190 575 305 No 116 130 Standard Undamped
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(152.13 kB)
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(2.65 MB)
EC/FEC FEC-26368-I02 7.59mm x 4.34mm x 3.73mm (.299in x .171in x .147in) 103 12S 26.3 100 56 Yes 116 DDL Standard Ferrofluid
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(153.30 kB)
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(2.64 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

ED/FED series


Knowles’ most versatile and most popular receiver, the ED series powers applications ranging from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments. The ED is made even more functional by the addition of ferrofluid. Its shock survivability makes it a robust receiver for many applications. FED receivers also damp acoustic peaks and reduce vibration to solve feedback problems and closing issues in ITE hearing instruments.

Features

• Compact size – 0.081cc
• Appreciable output power – 112dB nominal, 129dB maximum
• Two-terminal zero-bias and three-terminal center-tapped configurations
• Undamped, screen damped, internally damped, and FerrofluidTM damped responses with 2dB, 4dB, or 6dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available with FerrofluidTM technology for screenless damping and improved shock performance

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
ED/FED ED-21739-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 1500 825 No 116 128 Standard II
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(129.29 kB)
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(4.67 MB)
ED/FED ED-21744-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 825 3050 1700 No 116 128 Standard II
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(130.17 kB)
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(4.68 MB)
ED/FED ED-21912-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 725 395 No 116 128 Standard Undamped
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(129.00 kB)
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(1.40 MB)
ED/FED ED-21913-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 1450 780 No 116 128 Standard Undamped
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(130.58 kB)
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(1.39 MB)
ED/FED ED-21914-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 2900 1560 No 116 128 Standard Undamped
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(129.01 kB)
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(1.48 MB)
ED/FED ED-21915-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 1493 5900 3120 No 116 128 Standard Undamped
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(130.17 kB)
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(1.48 MB)
ED/FED ED-21932-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 725 395 No 116 128 Standard Undamped
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(130.30 kB)
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(1.48 MB)
ED/FED ED-21950-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 127 455 255 No 116 128 Standard I
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(130.87 kB)
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(4.69 MB)
ED/FED ED-21975-A21 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 9C 376 1450 780 No 116 128 Standard Undamped
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(174.98 kB)
ED/FED ED-21983-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 725 395 No 116 128 Standard I
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(129.89 kB)
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(4.68 MB)
ED/FED ED-21985-XXX 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 1493 5900 3120 No 116 128 Standard I
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(4.67 MB)
ED/FED ED-21987-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 1493 6300 3400 No 116 128 Standard II
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(130.22 kB)
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(4.67 MB)
ED/FED ED-21992-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 760 420 No 116 128 Standard II
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(130.47 kB)
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(4.68 MB)
ED/FED ED-23004-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 1500 825 No 116 128 Standard II
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(131.97 kB)
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(4.68 MB)
ED/FED ED-23012-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 760 420 No 116 128 Standard II
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(129.59 kB)
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(4.67 MB)
ED/FED ED-23087-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 1500 825 No 116 128 Standard III
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(131.30 kB)
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(1.55 MB)
ED/FED ED-23088-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 127 480 270 No 116 128 Standard II
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(131.30 kB)
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(4.68 MB)
ED/FED ED-23093-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 196 745 420 No 116 128 Standard III
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(131.26 kB)
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(1.55 MB)
ED/FED ED-23099-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 830 3050 1700 No 116 128 Standard III
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(130.14 kB)
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(1.48 MB)
ED/FED ED-23100-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 1493 6300 3400 No 116 128 Standard III
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(129.64 kB)
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(1.48 MB)
ED/FED ED-23145-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 376 1450 780 No 116 128 Standard Undamped
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(127.02 kB)
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(1.40 MB)
ED/FED ED-23146-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 92 360 195 No 116 128 Standard Undamped
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(129.85 kB)
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(1.48 MB)
ED/FED ED-23147-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 25.4 87 48 No 116 128 Standard Undamped
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(136.16 kB)
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(1.48 MB)
ED/FED ED-23162-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 25 92 51 No 116 128 Standard II
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(129.95 kB)
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(4.67 MB)
ED/FED ED-23313-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 195 745 420 No 116 128 Standard III
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(128.93 kB)
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(1.48 MB)
ED/FED ED-23619-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 3.32 10.2 7.1 No 116 128 Standard Undamped
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(130.01 kB)
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(1.48 MB)
ED/FED ED-23801-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12S 155 273 196 No 116 128 Standard I
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(130.34 kB)
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(4.77 MB)
ED/FED ED-23994-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 43 138 80 No 116 128 Standard II
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(139.62 kB)
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(4.67 MB)
ED/FED ED-26723-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 9S 376 1450 780 No 116 128 Standard Undamped
ED/FED ED-26765-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 105 12N 20 61 36 No 116 128 Standard III
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(126.63 kB)
ED/FED ED-27156-P101 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 127 455 255 No 116 128 Standard Undamped
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(128.30 kB)
ED/FED ED-27288-P111 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 48 100 65 No 116 128 Standard II
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(107.81 kB)
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(1.58 MB)
ED/FED ED-29689-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12C 3.65 10.2 7.1 No 116 128 Standard Undamped
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(132.55 kB)
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(1.54 MB)
ED/FED ED-30003-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12C 35 85 50 No 116 128 Standard Undamped
ED/FED FED-23100-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 1493 6000 3271 Yes 116 DDL Standard Ferrofluid + IIII
ED/FED FED-23732-000 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 196 680 380 Yes 116 DDL Standard Ferrofluid
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(143.05 kB)
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(1.50 MB)
ED/FED FED-26554-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12C 247 510 350 Yes 116 DDL Standard Ferrofluid + IIII
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(143.47 kB)
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(1.57 MB)
ED/FED FED-26565-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12C 54 128 84 Yes 116 DDL Standard Ferrofluid + IIII
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(143.72 kB)
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(1.57 MB)
ED/FED FED-26729-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 196 690 390 Yes 116 DDL Standard Ferrofluid + IIII
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(142.87 kB)
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(1.44 MB)
ED/FED FED-26788-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 17.5 52 30 Yes 116 DDL Standard Ferrofluid
ED/FED FED-26792-I02 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 48 100 65 Yes 116 DDL Standard Ferrofluid
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(143.40 kB)
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(1.50 MB)
ED/FED FED-26849-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 104 12N 48 100 65 Yes 116 DDL Standard Ferrofluid + IIII
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(148.87 kB)
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(990.31 kB)
ED/FED FED-26852-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12N 215 408 280 Yes 116 DDL Standard Ferrofluid + IIII
ED/FED FED-26861-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12C 215 408 280 Yes 116 DDL Standard Ferrofluid + IIII
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(150.38 kB)
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(1.62 MB)
ED/FED FED-27235-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12C 650 1540 945 Yes 116 DDL Standard Ferrofluid + IIII
ED/FED FED-27304-XXX 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 215 370 265 Yes 116 DDL Standard Ferrofluid + IIII
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(143.81 kB)
ED/FED FED-27423-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 196 680 380 Yes 116 DDL Standard Ferrofluid + IIII
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(143.51 kB)
ED/FED FED-27926-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 64 209 127 Yes 116 DDL Standard Ferrofluid + IIII
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(143.20 kB)
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(1.57 MB)
ED/FED FED-29457-I06 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 196 680 380 Yes 116 DDL Standard Ferrofluid
ED/FED FED-30027-I24 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 102 12C 48 116 74 Yes 116 DDL Standard Ferrofluid + heavy type II
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(111.14 kB)
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(4.74 MB)
ED/FED FED-30048-I04 6.32mm x 4.31mm x 2.97mm (.249in x .170in x .117in) 103 12N 23 29 26 Yes 116 DDL Standard Ferrofluid
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(143.80 kB)
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(1.20 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

EF/FEF series


The staple receiver for modern BTE hearing instruments, the EF series represents a precise balance of output power and compact size. Its length-width-height ratio provides an optimum fit that helps maximize BTE space and layout considerations while still providing superior acoustic output. A full range of Knowles’ PantographTM, FerrofluidTM, and Vibration IsolationTM technologies help maximize the EF series use for any BTE instrument design. The FEF receiver brings the advantages of Ferrofluid damping, including reduced receiver vibration and improved shock survivability. These advantages are added to the EF receiver’s precise balance of power and compact size. A full range of Knowles’ PantographTM and Vibration IsolationTM technologies help maximize the FEF series optimum fit and superior acoustic output.

Features

• For all ranges of BTE applications
• 139dB SPL maximum output
• Two-terminal zero-bias and three-terminal center-tapped configurations
• Broad bandwidth for improved sound quality
• Undamped, screen damped and FerrofluidTM damped responses with 2dB, 4dB, or 6dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available with PantographTM, FerrofluidTM, and Vibration IsolationTM technologies

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
EF/FEF EF-21763-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 195 1275 501 No 121 139 Standard Undamped
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(200.71 kB)
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(1.37 MB)
EF/FEF EF-21933-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 195 1275 501 No 121 139 Standard Undamped
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(204.48 kB)
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(1.49 MB)
EF/FEF EF-21935-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 48.5 327 128 No 121 139 Standard Undamped
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(207.07 kB)
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(1.49 MB)
EF/FEF EF-21937-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 92.5 641 250 No 121 139 Standard Undamped
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(206.78 kB)
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(1.49 MB)
EF/FEF EF-21942-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 92.5 641 250 No 121 139 Standard Undamped
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(203.09 kB)
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(1.37 MB)
EF/FEF EF-21943-033 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 92.5 630 240 No 121 139 Standard Undamped
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(209.37 kB)
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(1.49 MB)
EF/FEF EF-21958-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 124 12C 195 1331 501 No 121 139 Standard Undamped
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(173.79 kB)
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(1.54 MB)
EF/FEF EF-23094-XXX 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 125 12S 92.5 641 250 No 121 139 Standard Undamped
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(1.49 MB)
EF/FEF EF-23168-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 46.5 160 62 No 121 139 Standard Undamped
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(200.66 kB)
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(1.37 MB)
EF/FEF EF-23187-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 530 3560 1400 No 121 139 Standard Undamped
EF/FEF EF-26161-116 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 75 542 212 No 121 139 Standard Undamped
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(138.70 kB)
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(1.39 MB)
EF/FEF EF-26274-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12C 10 76 30 No 121 139 Standard Undamped
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(201.51 kB)
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(1.41 MB)
EF/FEF EF-26329-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 1S 35 150 64 No 121 139 Standard Undamped
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(203.39 kB)
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(1.37 MB)
EF/FEF EF-26348-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 118 2S 39.1 155 69 No 121 139 Standard Undamped
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(133.53 kB)
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(1.39 MB)
EF/FEF EF-26363-116 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 28 136 57 No 121 139 Standard Undamped
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(138.83 kB)
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(1.39 MB)
EF/FEF EF-26369-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 113 12S 46.5 30000 30000 No 121 139 Standard Undamped
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(149.00 kB)
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(3.26 MB)
EF/FEF EF-26418-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 114.5 12N 50 377 140 No 121 139 Standard Undamped
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(168.63 kB)
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(1.27 MB)
EF/FEF EF-26419-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 114.5 12N 50 377 140 No 121 139 Standard Undamped
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(168.41 kB)
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(1.27 MB)
EF/FEF EF-26426-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 122 1S 46.5 160 62 No 121 139 Standard Undamped
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(200.82 kB)
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(1.37 MB)
EF/FEF EF-26430-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 124 12S 165 964 438 No 121 139 Standard Undamped
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(184.65 kB)
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(1.49 MB)
EF/FEF EF-26494-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 1S 195 1275 501 No 121 139 Standard Undamped
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(202.89 kB)
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(1.37 MB)
EF/FEF EF-26634-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 1S 92.5 675 265 No 121 139 Standard Undamped
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(203.19 kB)
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(1.37 MB)
EF/FEF EF-26635-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 21 147 57.5 No 121 139 Standard Undamped
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(134.88 kB)
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(1.39 MB)
EF/FEF EF-26636-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 15 101 42 No 121 139 Standard Undamped
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(147.30 kB)
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(1.39 MB)
EF/FEF EF-26665-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126.5 1S 105 636 252 No 121 139 Standard Undamped
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(204.20 kB)
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(1.37 MB)
EF/FEF EF-26692-116 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 290 555 300 No 121 139 Standard Undamped
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(139.15 kB)
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(1.39 MB)
EF/FEF EF-26708-017 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 124 12S 25 175 70 No 121 139 Standard Undamped
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(191.39 kB)
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(2.56 MB)
EF/FEF EF-26714-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 35 150 64 No 121 139 Standard Undamped
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(202.53 kB)
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(1.37 MB)
EF/FEF EF-27351-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 21 140 57 No 121 139 Standard Undamped
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(203.16 kB)
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(1.37 MB)
EF/FEF EF-27428-116 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 2S 92.5 641 250 No 121 139 Standard Undamped
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(139.45 kB)
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(1.47 MB)
EF/FEF EF-27505-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 105 636 252 No 121 139 Standard Undamped
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(203.66 kB)
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(1.37 MB)
EF/FEF EF-27534-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 15 110 43 No 121 139 Standard Undamped
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(202.61 kB)
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(1.37 MB)
EF/FEF EF-27715-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 11S 48.5 327 128 No 121 139 Standard Undamped
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(184.77 kB)
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(1.50 MB)
EF/FEF EF-27985-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 48.5 345 135 No 121 139 Standard Undamped
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(203.60 kB)
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(1.37 MB)
EF/FEF EF-28378-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 195 1275 501 No 121 139 Standard Undamped
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(207.34 kB)
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(1.49 MB)
EF/FEF EF-29586-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 20 135 53 No 121 139 Standard Undamped
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(190.09 kB)
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(1.50 MB)
EF/FEF EF-29615-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 1S 48.5 345 135 No 121 139 Standard Undamped
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(206.76 kB)
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(1.50 MB)
EF/FEF EF-29734-033 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12C 48.5 342 128 No 121 139 Standard Undamped
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(208.10 kB)
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(1.54 MB)
EF/FEF EF-29802-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 126 12S 530 3382 1332 No 121 139 Standard Undamped
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(207.67 kB)
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(1.49 MB)
EF/FEF EF-30037-000 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 119 1S 15 98 40 No 121 139 Standard Undamped
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(191.19 kB)
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(1.37 MB)
EF/FEF FEF-26348-I02 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 116 2S 39.1 115 73 Yes 121 DDL Standard Ferrofluid
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(202.13 kB)
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(1.39 MB)
EF/FEF FEF-26356-I04 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 116 12S 39.1 135 73 Yes 121 DDL Standard Ferrofluid
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(202.93 kB)
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(1.37 MB)
EF/FEF FEF-26790-I02 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 116 2S 18 88 50 Yes 121 DDL Standard Ferrofluid
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(203.86 kB)
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(1.39 MB)
EF/FEF FEF-27351-P16 7.87mm x 5.59mm x 4.01mm (.310in x .220in x .158in) 116 12S 20 113 56 Yes 121 DDL Standard Ferrofluid
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(279.43 kB)
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(1.55 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

EH/FEH series


The standard for in-the-ear receivers, the EH series is the workhorse of numerous ITE and ITC designs. Its broad range of design options featuring various port locations, coil impedances, and damping options – including Knowles’ FerrofluidTM technology – means that there is an EH receiver ideal for your ITE or ITC instrument. Ferrofluid provides a damped acoustic response without the wax-clogging problems associated with damping screens. Ferrofluid’s additional ability to reduce receiver vibration and hearing instrument feedback means that there is an FEH receiver for your ITE or ITC instrument.

Features

• 128dB SPL maximum output
• Two-terminal zero-bias and three-terminal center-tapped configurations
• Undamped, screen damped, internally damped, and FerrofluidTM damped responses with 2dB, 4dB, or 6dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available in Class-D amplified version as ES or FES receiver

 

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
EH/FEH EH-23030-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 395 1055 625 No 110 128 Standard Undamped
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(186.97 kB)
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class=”download-text”>3D models
(1.69 MB)
EH/FEH EH-23043-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 395 1055 625 No 110 128 Standard I
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(172.62 kB)
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(3.65 MB)
EH/FEH EH-23044-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 0JM 395 1055 625 No 110 128 Standard Undamped
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(185.94 kB)
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(1.05 MB)
EH/FEH EH-23050-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 197 505 310 No 110 128 Standard Undamped
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(186.81 kB)
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(1.69 MB)
EH/FEH EH-23052-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 795 2150 1280 No 110 128 Standard Undamped
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(186.90 kB)
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(1.69 MB)
EH/FEH EH-23053-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 795 2150 1280 No 110 128 Standard I
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(172.95 kB)
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(3.65 MB)
EH/FEH EH-23054-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 9S 395 1055 625 No 110 128 Standard Undamped
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(186.07 kB)
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(1.69 MB)
EH/FEH EH-23061-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 197 505 310 No 110 128 Standard I
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(187.53 kB)
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(4.91 MB)
EH/FEH EH-23063-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 395 1055 625 No 110 128 Standard I
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(173.51 kB)
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(4.91 MB)
EH/FEH EH-23066-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 1025 2780 1630 No 110 128 Standard Undamped
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(187.53 kB)
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(1.69 MB)
EH/FEH EH-23067-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 1025 2780 1630 No 110 128 Standard I
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(172.80 kB)
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(981.21 kB)
EH/FEH EH-23149-000 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100.5 12C 68 185 110 No 110 128 Standard Undamped
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(102.59 kB)
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(1.68 MB)
EH/FEH FEH-26728-I06 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 98 12C 465 765 575 Yes 110 DDL Standard Ferrofluid + IIII
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(169.01 kB)
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(1.67 MB)
EH/FEH FEH-26796-I02 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 98 9C 467 725 540 Yes 110 DDL Standard Ferrofluid
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(191.85 kB)
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class=”download-text”>3D models
(1.66 MB)
EH/FEH FEH-27318-I06 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 98 12C 68 180 110 Yes 110 DDL Standard Ferrofluid + IIII
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(212.28 kB)
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(1.69 MB)
EH/FEH FEH-29833-I02 5.19mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 97.5 12C 197 550 330 Yes 110 DDL Standard Ferrofluid
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(193.11 kB)
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(1.69 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

EJ series


The EJ receiver is two ED receivers joined cover to cover to provide significant reduction in vibration signature while increasing output power by 6dB. Ideal for high gain ITC and BTE applications.

Features

• 135dB SPL maximum output
• Low Vibration

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
EJ EJ-23018-000 6.33mm x 4.32mm x 5.97mm (.249in x .170in x .235in) 110 12S 98 380 210 No 122.5 135.5 Standard II
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EJ EJ-23021-000 6.33mm x 4.32mm x 5.97mm (.249in x .170in x .235in) 110 12S 190 750 413 No 122.5 135.5 Standard II
EJ EJ-23026-000 6.33mm x 4.32mm x 5.97mm (.249in x .170in x .235in) 111.5 12S 98 362 198 No 122.5 135.5 Standard Undamped
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EJ EJ-23080-000 6.33mm x 4.32mm x 5.97mm (.249in x .170in x .235in) 110 12S 98 380 210 No 122.5 135.5 Standard III
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(2.25 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

FC/FFC series


The FC series receiver is an improved output and increased headroom version of the standard EH receiver. Moreover, the FC receiver features rounded corners, resulting in a smaller diagonal cross-section for improved fit rates.

Features

• 127dB SPL maximum output
• Available in High-Output HC receiver version – even more MPO
• Two-terminal zero-bias and three-terminal center-tapped configurations
• Undamped, screen damped, internally damped, and FerrofluidTM damped responses with 2dB or 4dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available with FerrofluidTM technology offering screenless damping and improved shock performance
• Available in Class-D amplified version as FD and FFD receiver

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
FC/FFC FC-23265-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 395 1055 625 No 112 124 Standard I
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FC/FFC FC-23300-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 395 1055 625 No 112 124 Standard Undamped
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FC/FFC FC-23306-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 1025 2780 1630 No 112 124 Standard I
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(5.21 MB)
FC/FFC FC-26033-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 1050 2400 1600 No 112 124 Standard III
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(2.09 MB)
FC/FFC FC-26170-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 540 845 640 No 112 124 Standard III
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(2.13 MB)
FC/FFC FC-26171-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 135 225 170 No 112 124 Standard III
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(2.11 MB)
FC/FFC FC-26184-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 354 550 425 No 112 124 Standard III
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FC/FFC FC-26214-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 1165 3320 1980 No 112 124 Standard III
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(2.11 MB)
FC/FFC FC-26314-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 120 220 150 No 112 124 Standard Undamped
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(2.11 MB)
FC/FFC FC-26326-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 667 1615 1015 No 112 124 Standard II
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(5.25 MB)
FC/FFC FC-26465-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 42 85 57 No 112 124 Standard III
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(2.12 MB)
FC/FFC FC-26654-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 104 12C 40 80 60 No 112 124 Standard II
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(5.22 MB)
FC/FFC FC-26887-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 354 550 425 No 112 124 Standard III
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(2.09 MB)
FC/FFC FC-30001-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 540 845 640 No 112 124 Standard III
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(2.16 MB)
FC/FFC FC-30010-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12N 135.6 229.5 171.5 No 112 124 Standard III
FC/FFC FC-30011-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12N 540 844.5 640 No 112 124 Standard III
FC/FFC FC-30012-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12N 1166 3320 1980 No 112 124 Standard III
FC/FFC FC-30013-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12N 40 90 62 No 112 124 Standard III
FC/FFC FFC-23981-I04 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 56 88 65 Yes 112 DDL Standard Ferrofluid + IIII
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(2.12 MB)
FC/FFC FFC-26171-I02 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 135 230 170 Yes 112 DDL Standard Ferrofluid + IIII
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(2.09 MB)
FC/FFC FFC-26654-I02 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100 12C 40 95 66 Yes 112 DDL Standard Ferrofluid + IIII
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(2.09 MB)
FC/FFC FFC-26795-I04 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 100.5 12C 25 60 35 Yes 112 DDL Standard Ferrofluid + IIII
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(2.09 MB)
FC/FFC FFC-26853-I05 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 99.5 12N 135 230 170 Yes 112 DDL Standard Ferrofluid + IIII
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(2.18 MB)
FC/FFC FFC-26863-I05 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 99.5 12C 540 845 640 Yes 112 DDL Standard Ferrofluid + IIII
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(2.16 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

FH/FFH series


The FH receiver represents an unprecedented combination of ultra-compact size and high SPL output with efficiencies normally found only in much larger receivers. Available with Knowles’ FerrofluidTM technology for reduced vibration, improved shock performance, and reduced wax-clogging problems means easier manufacturing and greater field dependability for ITC and CIC instruments.

Features

• 124dB SPL maximum output
• Two-terminal zero-bias and three-terminal configurations
• Undamped, screen damped, internally damped, and FerrofluidTM damped responses with 2dB, 4dB, or 6dB peak amplitude
• Numerous port locations
• Wide range of coil impedances
• Available with FerrofluidTM technology offering screenless damping for superior shock performance and reduced receiver vibration

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
FH/FFH FFH-23371-I04 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 97 12S 61 128 85 Yes 109 DDL Standard Ferrofluid
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(2.58 MB)
FH/FFH FFH-23373-I04 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 95.5 12S 125 280 190 Yes 109 DDL Standard Ferrofluid
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(442.18 kB)
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(3.55 MB)
FH/FFH FFH-23375-I02 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 240 500 330 Yes 109 DDL Standard Ferrofluid
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(3.55 MB)
FH/FFH FFH-23469-I04 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 240 515 340 Yes 109 DDL Standard Ferrofluid + IIII
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(146.53 kB)
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(3.56 MB)
FH/FFH FFH-23605-I02 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12N 240 500 330 Yes 109 DDL Standard Ferrofluid
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(3.14 MB)
FH/FFH FFH-26308-I04 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 97 12S 246 522 343 Yes 109 DDL Standard Ferrofluid + IIII
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(3.56 MB)
FH/FFH FFH-26553-I02 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 58 128 85 Yes 109 DDL Standard Ferrofluid + IIII
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(195.19 kB)
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(3.56 MB)
FH/FFH FFH-26786-I04 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 23 49 32 Yes 109 DDL Standard Ferrofluid
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(146.02 kB)
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(3.55 MB)
FH/FFH FFH-26856-I05 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 58 130 90 Yes 109 DDL Standard Ferrofluid
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(1.41 MB)
FH/FFH FFH-26857-I05 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12N 240 500 330 Yes 109 DDL Standard Ferrofluid + IIII
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(1.41 MB)
FH/FFH FFH-26867-I05 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 985 2152 1390 Yes 109 DDL Standard Ferrofluid + IIII
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(2.33 MB)
FH/FFH FH-23371-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 60 130 90 No 109 124 Standard Undamped
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(2.14 MB)
FH/FFH FH-23373-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 125 265 185 No 109 124 Standard Undamped
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(2.14 MB)
FH/FFH FH-23377-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 515 1030 685 No 109 124 Standard Undamped
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(2.14 MB)
FH/FFH FH-23469-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 99.5 12S 245 515 340 No 109 124 Standard II
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(5.40 MB)
FH/FFH FH-23605-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12N 240 500 325 No 109 124 Standard Undamped
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(1.39 MB)
FH/FFH FH-23821-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 125 260 174 No 109 124 Standard III
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(2.14 MB)
FH/FFH FH-26308-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 241 553 391 No 109 124 Standard III
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(187.27 kB)
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(2.14 MB)
FH/FFH FH-26553-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 60 130 80 No 109 124 Standard III
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(186.76 kB)
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(2.14 MB)
FH/FFH FH-26555-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12S 985 2152 1390 No 109 124 Standard III
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(2.14 MB)
FH/FFH FH-26664-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 97.5 12S 430 790 560 No 109 124 Standard I
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(5.40 MB)
FH/FFH FH-26745-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12S 60 130 90 No 109 124 Standard Undamped
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(2.42 MB)
FH/FFH FH-26757-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 100 12N 60 125 80 No 109 124 Standard III
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(1.39 MB)
FH/FFH FH-30014-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12N 241 515 340 No 109 124 Standard III
FH/FFH FH-30015-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12N 58 130 90 No 109 124 Standard III
FH/FFH FH-30016-000 5.09mm x 2.80mm x 2.59mm (.200in x .111in x .102in) 96 12N 985 2152 1390 No 109 124 Standard III
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

FJ series


The FJ receiver is two FH receivers joined cover to cover to provide significant reduction in vibration signature while increasing output power by 6dB. Ideal for high gain CIC, ITE and ITC applications.

Features

• 129dB SPL maximum output
• Low Vibration

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
FJ FJ-26758-000 5.08mm x 2.79mm x 5.18mm (.200in x .110in x .204in) 106 12S 30 65 44 No 114.5 130 Standard III
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(5.28 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

FK series


The world’s smallest balanced-armature receiver, the FK series is designed for CIC applications where minimum size and maximum fit rate is needed. Only 0.025cc in total volume, the FK receiver can provide over 123dB SPL output for even the tightest fittings and deepest insertions. The wide bandwidth version pushes the boundaries of high-frequency performance. As part of the TWFK receiver, the WBFK offers the widest bandwidth response of any receiver.

Features

• 123dB SPL maximum output
• Two-terminal zero-bias configuration
• Undamped, screen damped, and internally damped responses
• Numerous port locations
• Wide range of coil impedances
• Wide bandwidth version available – ideal for patients with mild to moderate high-frequency hearing loss.

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
FK FK-23451-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95.5 12S 360 630 450 No 108 123 Standard Undamped
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(2.36 MB)
FK FK-23466-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95.5 12S 360 630 450 No 108 123 Standard Undamped
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(138.69 kB)
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(2.36 MB)
FK FK-23989-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12N 100 168 125 No 108 123 Standard Undamped
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(141.52 kB)
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(2.33 MB)
FK FK-26260-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 96 12S 135 240 180 No 108 123 Standard II
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(139.47 kB)
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(5.36 MB)
FK FK-26433-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 93.5 3S 580 940 690 No 108 123 Standard Undamped
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(135.93 kB)
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(3.44 MB)
FK FK-26768-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12N 580 1030 740 No 108 123 Standard Undamped
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(128.07 kB)
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(2.65 MB)
FK FK-26777-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 96 12N 135 237 176 No 108 123 Standard III
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(125.99 kB)
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(2.62 MB)
FK FK-26888-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 93 3S 580 940 690 No 108 123 Standard Undamped
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(194.23 kB)
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(2.75 MB)
FK FK-26889-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 94 3S 580 940 690 No 108 123 Standard Undamped
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(165.22 kB)
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(2.65 MB)
FK FK-30020-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12N 360 630 450 No 108 123 Standard Undamped
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(118.45 kB)
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(2.53 MB)
FK FK-30030-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12N 360 630 450 No 108 123 Standard Undamped
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(139.46 kB)
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(2.59 MB)
FK FK-30040-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 94 12N 198 320 238 No 108 123 Standard III
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(114.81 kB)
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(2.57 MB)
FK WBFK-23990-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 91 12N 50 57 53 No 107 125 Standard Undamped
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(139.42 kB)
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(2.62 MB)
FK WBFK-30000-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12S 100 124 111 No 107 125 Standard Undamped
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(167.38 kB)
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(3.67 MB)
FK WBFK-30019-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 91 12N 12.5 16 15 No 107 125 Standard Undamped
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(2.77 MB)
FK WBFK-30042-000 5.00mm x 2.73mm x 1.93mm (.197in x .108in x .078in) 95 12N 100 118 106 No 107 125 Standard Undamped
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(2.87 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

GD series


The GD revolutionizes receiver design to maximize output while minimizing vibration. It is well suited for low-mid power custom, receiver-in-canal, and mini-BTE applications that require the lowest vibration possible. The GD offers best in class vibration performance helping to increase gain before feedback in all applications.

Features

• High sensitivity
• Low vibration
• Low magnetic radiation
• Wide range of port locations and impedances

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
GD GD-31133-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12N 79 105 87 No 113 128 Standard Undamped
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(140.54 kB)
GD GD-31223-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12S 105 144 121 No 113 128 Standard Undamped
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(147.87 kB)
GD GD-31269-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12S 105 144 121 No 113 128 Standard Undamped
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(168.27 kB)
GD GD-31288-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12S 105 281 230 No 113 128 Standard Undamped
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(146.25 kB)
GD GD-31440-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12S 165 223 184 No 113 128 Standard Undamped
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(145.46 kB)
GD GD-31475-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12S 34 43 36 No 113 128 Standard Undamped
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GD GD-31554-000 5.99mm x 3.10mm x 2.59mm (.256in x .122in x .102in) 100 12N 201 279 228 No 113 128 Standard Undamped
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(1.01 MB)
GD GD30-31488-000 6.10mm x 3.20mm x 2.69mm (.240in x .126in x .106in) 100 12N 201 279 228 No 113 128 Standard Undamped
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(1.60 MB)
GD GD30-31527-000 6.10mm x 3.20mm x 2.69mm (.240in x .126in x .106in) 100 12N 201 279 228 No 113 128 Standard Undamped
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(161.45 kB)
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(1.26 MB)
GD GD30-31593-000 6.10mm x 3.20mm x 2.69mm (.240in x .126in x .106in) 100 12N 201 279 228 No 113 128 Standard Undamped
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(180.84 kB)
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(1.28 MB)
GD GD30-31719-000 6.10mm x 3.20mm x 2.69mm (.240in x .126in x .106in) 100 12N 201 279 228 No 113 128 Standard Undamped
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(174.14 kB)
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Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

GR series


Highest performance dual balanced armature receiver, maximizing output per cubic millimeter while minimizing vibration and magnetic radiation. Ideal for mid-high power custom, BTE, and receiver-in-canal hearing instruments.

Features

• High sensitivity
• Low vibration
• Low magnetic radiation
• Wide range of port locations and impedances

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
GR GR-31459-000 6.10mm x 3.20mm x 4.32mm (.240in x .126in x .170in) 113 12S 41 109 57 No 117 139 Standard Undamped
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GR GR-31502-000 6.10mm x 3.20mm x 4.32mm (.240in x .126in x .170in) 103 12S 76 170 109 No 117 139 Standard Undamped
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GR GR-31570-000 6.10mm x 3.20mm x 4.32mm (.240in x .126in x .170in) 103 12S 41 88 57 No 117 139 Standard Undamped
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GR GR-31587-000 6.10mm x 3.20mm x 4.32mm (.240in x .126in x .170in) 113 12S 41 89 59 No 117 139 Standard Undamped
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GR GR-31711-000 6.10mm x 3.20mm x 4.32mm (.240in x .126in x .170in) 103 12S 29 63 40 No 117 139 Standard Undamped
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(1.75 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

HC/FHC series


Knowles balanced-armature, magnetic technology to give high efficiency, stability and reliability. HC Series provides increased low frequency dynamic range in a package size equal to FC.

Features

• In-ear size receiver
• Improved low frequency headroom

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
HC/FHC FHC-23770-I04 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 183 530 290 No 116 DDL Standard Ferrofluid
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HC/FHC HC-23724-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 63 165 95 No 116 123 Standard Undamped
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HC/FHC HC-23761-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 5 14.6 8.4 No 116 123 Standard Undamped
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HC/FHC HC-23762-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 7.4 20.8 12 No 116 123 Standard Undamped
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HC/FHC HC-23763-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 11.5 36 20 No 116 123 Standard Undamped
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HC/FHC HC-23764-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 15.5 43 24 No 116 123 Standard Undamped
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HC/FHC HC-23765-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 20 67 36 No 116 123 Standard Undamped
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HC/FHC HC-23766-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 30 100 52 No 116 123 Standard Undamped
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HC/FHC HC-23767-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 44 117 67 No 116 123 Standard Undamped
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HC/FHC HC-23768-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 83 248 137 No 116 123 Standard Undamped
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HC/FHC HC-23770-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 177 530 290 No 116 123 Standard Undamped
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HC/FHC HC-23772-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 388 1009 585 No 116 123 Standard Undamped
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HC/FHC HC-23774-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 685 2072 1132 No 116 123 Standard Undamped
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HC/FHC HC-23776-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 101 12C 874 2740 1473 No 116 123 Standard Undamped
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HC/FHC WBHC-23910-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 95 12C 120 145 130 No 114 121 Standard Undamped
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HC/FHC WBHC-23911-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 95 12C 177 207 189 No 114 121 Standard Undamped
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HC/FHC WBHC-23912-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 95 12C 275 327 291 No 114 121 Standard Undamped
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HC/FHC WBHC-23913-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 95 12C 388 497 428 No 114 121 Standard Undamped
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HC/FHC WBHC-26892-000 5.17mm x 3.55mm x 3.00mm (.204in x .140in x .118in) 95 12S 177 210 190 No 114 121 Standard Undamped
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Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

TEC series


The TEC combines output comparable to the larger BK receiver in an ultra-thin package. TEC is suitable for multi-element earphone designs.

Features

• Ultra-thin
• Wideband output

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
TEC TEC-30006-000 7.87mm x 4.09mm x 2.79mm (.310in x .161in x .110in) 117 12N 46 151 69 No 118 138 Standard Undamped
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TEC TEC-30033-000 7.87mm x 4.09mm x 2.79mm (.310in x .161in x .110in) 117 12C 22 59 31 No 118 138 Standard Undamped
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(1.36 MB)
 
 
 
 
Series:  BK – CI – DFK – DTEC – EC/FEC – ED/FED – EF/FEF – EH/FEH – EJ – FC/FFC – FH/FFH – FJ – FK – GD – GR – HC/FHC – TEC – TWFK

TWFK series


The world’s smallest dual balanced armature receiver, the TWFK is designed for pro-audio in-ear applications. It enables customized cross-over systems to achieve target frequency response in a package size smaller than the ED Series.

Features

• Dual elements with single sound port
• Extreme wideband capability
• Unique woofer/tweeter design
• Mechanical shock resistance

Product Families Model ID Dimensions Sensitivity Port Loc. Resp. (DCR) Imp @ 1kHz Imp @ 500 Hz Ferrofluid MPO 500 MPO Pk Vibration BRV (Damping) Downloads
TWFK TWFK-30017-000 5.00mm x 2.73mm x 3.86mm (.197in x .108in x .152in) 95 12S 25 43 31 No 110.5 123.5 Standard Undamped
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