IBM 4840-563, Справочное руководство системы

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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 Page 28 of
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