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Knowles balanced armature speakers - CM Series

cmThe CM Series delivers the benefits of balanced armature technology in a compact finished package. The CM is ideal for use in situations where a non-contacting headset is required, but signal voltage is limited – as is common for radios and wireless telephones. The CM also conserves battery power, and provides static shock protection for the user.

    • Balanced-armature, magnetic technology to give high efficiency, stability and reliability
    • High acoustic efficiency enables sufficient sound output even when limited power is available
    • In-built static protection
    • Lightweight, matt-black, plastic housing
    • Ergonomically designed with rounded edge to fit the concha
    • High-quality sound output
    • Tailored bandwidth for superb speech intelligibility
 Model Picture Sensitivity @1kHz (dB SPL) Sensitivity @1st Peak (dB SPL) Max SPL @1st Peak (dB SPL) DC Resistance (Ω) Impedance @ 500 Hz (Ω)
CM-23152-000 CM-23152-000 103 109 119 69 150
CM-23299-000 CM-23299-000 103 109 119 69 150
CM-28421-000 CM-28421-000 103 109 119 100 360
CM-28431-000 CM-28431-000 103 109 119 10.5 30.0
CM-28452-000 CM-28452-000 103 109 119 100 360
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