DOWNLOAD Sony XM-1502SX / XM-1902GX Service Manual ↓ Size: 4.58 MB | Pages: 33 in PDF or view online for FREE

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US Model

XM-1502SX/1902GX

Canadian Model

AEP Model

UK Model

E Model

XM-1502SX

Circuit system

OTL (output transformerless) circuit
Pulse power supply

Inputs

RCA pin jacks
High level input connector

Outputs

Speaker terminals
Through out pin jacks

Speaker impedance

2 – 8 

Ω (stereo) (XM-1502SX)

1.3 – 8 

Ω (stereo) (XM-1902GX)

4 – 8 

Ω (when used as a bridging amplifier)

Maximum outputs

300 W 

× 2 (at 4 Ω)

760 W (monaural) at 4 

Ω

Rated outputs (supply voltage at 14.4 V)

150 W 

× 2 (20 Hz – 20 kHz, 0.04% THD,

at 4 

Ω)

190 W 

× 2 (20 Hz – 20 kHz, 0.1% THD,

at 2 

Ω)

190 W 

× 2 (20 Hz – 20 kHz, 0.1% THD,

at 1.3 

Ω) (XM-1902GX)

380 W 

× 1 (20 Hz – 20 kHz, 0.1% THD,

at 4 

Ω) (XM-1902GX)

380 W (monaural) (20 Hz – 20 kHz, 0.1% THD,
at 4 

Ω) (XM-1502SX)

Frequency response

5 Hz – 100 kHz (      dB)

Harmonic distortion

0.005% or less (at 1 kHz, 4 

Ω)

Input level adjustment range

0.2 – 6.0 V (RCA pin jacks)
0.4 – 12.0 V (High level input)

High-pass filter

50 – 300 Hz, –12 dB/oct

Low-pass filter

50 – 300 Hz, –12 dB/oct

Low boost

0 – 10 dB (40 Hz)

Phase shift adjustment range (XM-1902GX)

0° – 180° (at 40 Hz)

Power supply voltage

10.5 – 16 V

Current drain

at rated output : 40 A (at 4 

Ω)

Remote input : 2 mA

Dimensions

Approx. 358 

× 50 × 264 mm

(14 

1/8

 

× 2 

1/4

 

× 10 

1/2

 in.)

(w/h/d) not incl. projecting parts and controls

Mass

Approx. 3.5 kg (7 lb. 11 oz.) not incl. accessories

Supplied accessories

Mounting screws (4)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION
150 watts per channel minimum continuous average power into
4 ohms, both channels driven from 20 Hz to 20 kHz with no more
than 0.04% total harmonic distortion per Car Audio Ad Hoc
Committee standards.

+0.5

–3

Photo: XM-1902GX

2002G0400-1

© 2002. 07

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Location and Function of Controls .......................................... 3
Connections ............................................................................. 3

2-1.   Plate, Bottom ....................................................................... 6
2-2.   Main Board ......................................................................... 6
2-3.   Front Panel .......................................................................... 7
2-4.   Led Board ............................................................................ 7

...................................... 8

4-1.   Block Diagram .................................................................... 9
4-2.   Printed Wiring Boards –Main Section– ............................ 11
4-3.   Schematic Diagram –Main Section (1/2)– ........................ 12
4-4.   Schematic Diagram –Main Section (2/2)– ........................ 13

5-1.   Heat Sink Section .............................................................. 14
5-2.   Main Board Section .......................................................... 14

......................................... 15

•

Never reuse a disconnected chip component.

•

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

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This section is extracted
from instruction manual.

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