5 channel
Active
Subwoofer
Sony Corporation
1999
Printed in U.S.A
Operating Instructions
XS-AW850
3-866-441-11 (1)
Owner’s Record
The model and serial numbers are located on the bottom of the unit.
Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony dealer regarding this product.
Model No. XS-AW850 Serial No.
*
Pulse power supply
This unit has a built-in power regulator which converts
the power supplied by the DC 12 V car battery into high
speed pulses using a semiconductor switch. These pulses
are stepped up by the built-in pulse transformer and
separated into both positive and negative power supplies
before being converted into direct current again. This is to
regulate fluctuating voltage from the car battery. This
light weight power supply system provides a highly
efficient power supply with a low impedance output.
Features
•Maximum power output of 50 watts
×
4 (at 4
ohms) + 120 watts (at 6 ohms, subwoofer).
•Direct connections can be made with the
speaker outputs of your car audio if it is not
equipped with the line output (High level
input connection).
•High-pass filter circuit built-in.
•Protection circuit provided.
•Pulse power supply
*
for stable, regulated
output power.
Connections
Caution
•Before making any connections, disconnect the
ground terminal of the car battery to avoid short
circuits.
•Be sure to use speakers with an adequate power
rating. If you use small capacity speakers, they
may be damaged.
•Do not connect the
’
terminal of the speaker
system to the car chassis, and do not connect the
’
terminal of the right speaker with that of the
left speaker.
•Install the input and output cords away from the
power supply lead as running them close
together can generate some interference noise.
•This unit is a high-power amplifier. Therefore, it
may not perform to its full potential if used with
the speaker cords supplied with the car.
•If your car is equipped with a computer system
for navigation or some other purpose, do not
remove the ground wire from the car battery. If
you disconnect the wire, the computer memory
may be erased. To avoid short circuits when
making connections, disconnect the +12 V power
supply lead until all the other leads have been
connected.
Make the terminal connections as illustrated below.
REMOT
E
+
12V G
ND
REMOTE
+
12V GND
µ
Note
Tighten the screws firmly, but be
careful not to apply too much force
*
as
doing so may damage the screws.
*
The torque value should be less than
1 N•m.
Pass the leads
through the cap,
connect the
leads, then
cover the
terminals with
the cap.
Power Connection Leads
Car audio
Fuse (25 A)
+12 V car battery
to a metal point of
the car
*
When using a car audio without a remote output on the amplifier and when making a high level input connection, connect the
accessory power supply of the car to the ACC. When the unit receives a signal, the power of the unit turns on automatically. If
the unit does not receive a continuous signal for approximately 10 seconds, the power of the unit turns off automatically.
Notes on the power supply
• Connect the +12 V power supply lead only after all the other
leads have been connected.
•
Be sure to connect the ground lead of the unit
securely to a metal surface of the car. A loose
connection may cause the amplifier to malfunction.
• Be sure to connect the remote control lead of the car audio to
the remote terminal.
• Use the power supply lead with a fuse attached (25 A).
Remote output
*
(REM OUT)
• Place the fuse in the power supply lead as close as possible to
the car battery.
• Make sure that the leads to be connected to the
+12 V
and
GND
terminals of this unit are larger than 10-Gauge (AWG-
10) or have a sectional area of more than 5 mm
2
.
• When using the optional RC-46 power amplifier connecting
cord, consult that manual for proper use.
Direct speaker cord connection
Cord diameter 0.3 – 1.25 mm (AWG 22 – 16)
Flat-head screwdriver
11 mm (
7
/
16
in.)
Input Connections
High Level Input Connection
Line Input Connection
Car audio
LINE OUT
Front
Rear
Speaker Connections
4-Speaker System
Front speakers
(min. 4
Ω
)
Right
Right
Left
Rear speakers
(min. 4
Ω
)
For details on the settings of switches and
controls, refer to “Location and Function
of Controls.”
Left
Car audio
not supplied
Left speaker
Right speaker
Left speaker
Right speaker
Front
Rear
Location and Function of Controls
1
Cut-off frequency adjustment control
Sets the cut-off frequency (50–150 Hz) for the high-pass filters.
2
MODE select switch
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.
3
PHASE select switch (Subwoofer only)
Use this switch to change the phase of the reproduced sound to
match your audio system.
4
LEVEL control
Turn this control to adjust the subwoofer output level.
5
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 if a DC current is generated.
HI - PASS FILTER
FRONT
50Hz
150Hz
REAR
MODE
SUB WOOFER
50Hz
150Hz
F + R
F
LEVEL
MIN
MAX
PHASE
+
–
FREQUENCY
Cut-off frequency
10
0
-10
-20
-30
-40
-50
-60
-70
-80
10
100
1k
HIGH PASS
50Hz
80Hz
150Hz
Hz
‘
White
‘
Gray
’ ’
‘
Green
‘
Blue
’ ’
White
Gray
Green
Blue
When using a car audio without a remote output on the amplifier,
connect the accessory power supply of the car to the ACC (When
connecting to high level input connecting).
not supplied
Black
Black
*
The unit turns the power on or off
automatically depending whether the
power of the car audio is turned on or off
when an ACC power supply cord of the car
audio is connected to the unit.
*
The unit does not turn on or off together with the
car audio when an ACC power supply cord of the
car audio is connected to the unit.
Be sure to connect the remote control lead of the car
audio to the remote terminal.
