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Knowles balanced armature speakers - BK Series

BK Series speakers provide broadband performance at value pricing. They are commonly used for full range in-ear speakers and communications utilizing an earplug design

- High efficiency and low distortion
- Various port locations, coil impedances, damping options, terminal configurations, and frequency responses available

Model	Sensitivity @1kHz (dB SPL)	Sensitivity @1st Peak (dB SPL)	Max SPL @1st Peak (dB SPL)	DC Resistance (Ω)	Impedance @ 500 Hz (Ω)
BK-21600-000	123	125	133	100	285
BK-21604-000	123	125	133	895	2320
BK-21610-000	121	126	136	21	60
BK-21613-000	118	126	134	160	450
BK-21615-000	118	125	134	160	285
BK-21669-000	123.5	125	134	9	22
BK-23134-000	118	125	134	100	285
BK-26824-000	119	120	129	10.7	16
BK-28507-000	126	126	136	10.7	13.3
BK-28510-000	123	127	135	111	320
BK-28562-000	123	124	131	18.5	23
BK-29725-000	118	119	128	100	285