Sony xs aw 850 service manual

Page 1

XS-AW8507

SERVICE MANUAL

US Model

.-
MICROFILM

SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION
22 watts per channel minimum continuous average power into 4 ohms,

both channels driven from 100 Hz to 20 kHz with no more than 1% total

harmonic distortion.

other Specifications

Speaker section

Woofer 20 em, cone type

Impedance 5 ohm

Power amplifier section

Circuit system OTL (output transformerless)
circuit
Pulse power supply

Inputs RCA pin jacks
High level input connector
Outputs Speaker connector

Speaker impedance 4 9 (stereo)
Maximum outputs Front/ Rear outputs:
50 watts X 4 (at 4 ohms)
Subwoofer output:
120 watts x 1 (at 6 ohms)
Rated outputs (supply voltage at 14.4 V)
Front/ Rear Outputs:
2 watts x 4 (100 Hz 7 20 kHz,
1 "/o THD, at 4 ohms)
Subwoofer output:
60 watts (100 Hz, 1 % THD, at
6 ohms)
Frequency response Front/ Rear outputs:
50 Hz , 50 kHz ( :ds)
Harmonic distortion
Front/ Rear 0.1 % or less (at
1 kHz)
Subwoofer 0.05 "/u or less (at
100 Hz)

input sensitivity
0.7 V (RCA pin jacks)
8.0 V (High level input)

High-pass filter 50 - 150 Hz, 712 dB/oct

System Section
Power requirements
12 V DC car battery
(negative ground)
Power supply voltage
10.5 - 16 V
at rated output: 19 A
Remote input: 1.5 mA
Approx. 380 x 226 x 190 mm
(w/h/d) (15 X9 x 7 V; in.) not
incl. projecting parts and
controls
Mass Approx. 6.4 kg (14 lb.) not incl.
accessories
Supplied accessories
Mounting screws (-5 x 20: 4,
25 x 25: 4), Fittings (4),
Terminal Cap

Current drain

Dimensions

Design and specifications are subject to change
without notice.

5 CHANNEL ACTIVE SUBWOOFER
S 0 NY;

J

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TABLE OF CONTENTS
Specifications ............................................................................. l

1. GENERAL.

2

2. DISASSEMBLY
2A1. Amplifier Assembly .
2-2. Main Board
2-3. DC Fan Motor

3. DIAGRAMS
3-1. IC Block Diagrams ....................................................... 6
32. Printed Wiring Board
3-3. Schematic Diagram ..

4. EXPLODED VIEW ...................................................... ll
5. ELECTRICAL PARTS LIST .................................... 13
SECTION 1
GENERAL

This section is extracted from
instruction manual.

Location and Function of Controls

Cut-off frequency adjustment control fl

Sets the cut-off frequency (50-150 Hz) for the high-pass filters fiv

El MODE select switch

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The switch can be used to change the subwoofer output as follows

FRONT : Outputs the input signal to the FRONT input jack.
F+R : Outputs the input signal to the FRONT and REAR input

jacks.

PHASE select switch (Subwoofer only)
Use this switch to change the phase of the reproduced sound to
match your audio system.

LEVEL control

Turn this control to adjust the subwoofer output level.

13 POWER/PROTECTOR indicator
Lights up in green while the unit is in operation. The color will change
from green to amber and the unit will shut down when the protection
circuit is activated it a DC current is generated.