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

FK series
Contact Knowles

Additional Links

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
Download PDF Tech specs

(137.51 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(138.69 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(141.52 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(139.47 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(135.93 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(128.07 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(125.99 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(194.23 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(165.22 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(118.45 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(139.46 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(114.81 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(139.42 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(167.38 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(117.37 kB)

Download 3D Model 3D models

(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
Download PDF Tech specs

(118.73 kB)

Download 3D Model 3D models

(2.62 MB)