Sony XM-444 Service Manual

SERVICE MANUAL
Ver 1.0 2002. 02
Sony Corporation
9-873-560-01
2002B0400-1 e Vehicle Company
© 2002. 02 Published by Sony Engineering Corporation

SPECIFICATIONS

Circuit system OTL (output transformerless) circuit Pulse
power supply
Inputs RCA pin jacks
High level input connector
Input level adjustment range
0.3 – 6 V (RCA pin jacks),
0.6 – 12 V (High level input)
Outputs Speaker terminals
2 – 8 Ω (stereo)
Speaker impedance
4 – 8 Ω (when used as a bridging amplifier)
Maximum outputs
80 W × 4 (at 4 Ω)
4 Speakers:
80 W × 2 + 222 W × 1 (at 4 Ω)
3 Speakers:
222 W × 2 (at 4 Ω)
2 Speakers:
Rated outputs (supply voltage at 14.4 V)
35 W × 4 (20 Hz – 20 kHz, 0.04% THD, at 4 Ω)
4 Speakers:
40 W × 4 (20 Hz – 20 kHz, 0.1% THD, at 2 Ω)
80 W × 2 (20 Hz – 20 kHz, 0.1% THD, at 4 Ω)
2 Speakers:
Frequency response 5 Hz – 80 kHz (
0.005% or less (at 1 kHz, 4 Ω, 10 W)
Harmonic distortion
Low-pass filter 80 Hz, –18 dB/oct
High-pass filter 80 Hz, –12 dB/oct
Power requirements 12 V DC car battery
(negative ground)
Power supply voltage 10.5 – 16 V
at rated output : 20 A (4 Ω, 35 W × 4)
Current drain
Remote input : 1.5 mA
Approx. 260 × 55 × 180 mm (w/h/d) not incl.
Dimensions
projecting parts and controls
Mass Approx. 2.4 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.
XM-444
+0
dB)
–3
STEREO POWER AMPLIFIER
AEP Model
UK Model
E Model
1