MICROFILM
XM-222
SERVICE MANUAL
STEREO POWER AMPLIFIER
SPECIFICATIONS
E Model
Circuit system OTL (output
transformerless) circuit
Pulse power supply
Inputs RCA pin jacks
High level input
connector
Outputs Speaker terminals
Speaker impedance
2 – 8 ohms (stereo)
4 – 8 ohms (when used as
a bridging amplifier)
Maximum output at 4 ohms
100 watts per channel
222 watts (monaural)
Rated output (supply voltage at 14.4 V)
35 watts per channel (20
Hz – 20 kHz, 0.04 % THD,
at 4 ohms)
40 watts per channel (20
Hz – 20 kHz, 0.1 % THD,
at 2 ohms)
Monaural: 80 watts (20
Hz – 20kHz, 0.1 % THD,
at 4 ohms)
Frequency response
5Hz – 80kHz (
+0
dB)
-3
Harmonic distortion
0.005 % or less (at 1 kHz,
4 ohms, 10 watts)
Input level adjustment range
0.2 – 4V
Low-pass filter 80 Hz, –12 dB/oct
Power requirements
12 V DC car battery
(negative ground)
Power supply voltage
10.5 – 16V
Current drain at rated output: 12 A (4
ohms, 35 watts x 2)
at 10% THD : 14A
Remote input: 1.5 mA
Dimensions Approx. 230 x 53 x 145
mm (w/h/d) not incl.
projecting parts and
controls
Mass Approx. 1.6 kg not incl.
accessories
Supplied accessories
Mounting screws (4)
High level input cord (1)
Protection cap (1)
Design and specifications are subject to change
without notice.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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