IBM 4840-563 System Reference - Page 28
External Stereo Speaker Unit - driver
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External Stereo Speaker Unit SurePOS 500-XX3 supports an external stereo speaker unit. The speaker unit is a self-contained assembly which attaches to SurePOS 500-XX3 using mounting screws. There is a connection provided for input, power and signal, to the speaker unit. The speaker unit contains the drivers and a 1 W per channel amplifier. Design 2 element, 1 way, sealed design Drivers Type 7 x 4 (28 mm x 40 mm x 15 mm deep) Impedance 12 ohm impedance Magnetic Shielding Yes Frequency Response 160Hz - 11 kHz (+/- 3 dB) Output (rms EIAJ 10% THD 1kHz) 1W + 1 W Loudness 82 dB +/- 3 dB (1 Watt/ch @ 1 m) S/N Ratio 65 dB (IEC A weighted, ref 1 W) Channel Separation 40 dB Total Harmonic Distortion 10% Input Voltage 10.8V V DC +/- 10% Input Sensitivity 1 V (1 W, 1kHz) Input Impedance 12 ohm (1 kHz) Power Consumption 4 W at maximum volume setting Input Terminal Molex 70555-0038 (power + signal) SurePOS 500 Model XX3 Technical Reference, v 1.3 81 Page 28 of