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Knowles balanced armature speakers - SR Series

srAt 6.4mm diameter, the Mini SR is the smallest round balanced armature speaker in the marketplace. SR offers output equivalent to the FC series and maximizes bass performance.

    • Round package facilitates earphone designs
    • Drop-in upgrade for moving coil dynamic speakers
    • Designed for high volume production
    • Balanced armature technology
 Model Picture Sensitivity @1kHz (dB SPL) Sensitivity @1st Peak (dB SPL) Max SPL @1st Peak (dB SPL) DC Resistance (Ω) Impedance @ 500 Hz (Ω)
SR-6438NWS-000 SR-6438NWS-000 109.5 120 130 25 36.5
SR-6438NWS-158 SR-6438NWS-158 109.5 120 130 25 32.8
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