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Installation
Parts list
2
1
4
ø5
25
4
Before installation
•Choose the installation location carefully so that
•Use only the supplied mounting hardware for a
the unit does not interfere with driving and/or
safe and secure installation.
visibility.
•Consult your nearest Sony dealer for the location
•Avoid installing the unit where it would be
of an authorized installer if you require
subject to high temperatures, such as from direct
assistance.
sunlight or heater exhaust, or where it would be
subject to dust, dirt, or excessive vibration.
Note on mounting board (not supplied)
It is recommended that a mounting board be used for safe
•This unit may cause interference in the car audio
installation. The board should be thicker than 18 mm (
or other A/V devices. If this occurs, relocate the
accept the supplied mounting screws.
unit at least 50 cm from the affected device.
1
Fasten the fittings 1 securely to the unit with the screws
2.
2
1
2
Fasten the unit securely to the mounting board with the
screws 3.
Dimensions
3
ø5
20
4
Unit: mm (in.)
INPUT
HIGH LEVEL
INPUT
SPEAKER
OUT
ACC
POWER/
PROTECTOR
30A
REMOTE
+12V
GND
3
/
in.) to
4
Specifications
AUDIO POWER 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
Impedance
Power amplifier section
Circuit system
Inputs
Outputs
Speaker impedance 4
Maximum outputs Front/Rear outputs:
Rated outputs (supply voltage at 14.4 V)
3
Frequency response Front/Rear outputs:
HI - PASS FILTER
FRONT
50Hz
100Hz
REAR
50Hz
100Hz
SUB WOOFER
F + R
F
MODE
+
PHASE
–
LEVEL
MIN
MAX
335 (13
1
/
)
4
380 (15)
Harmonic distortion
20 cm, cone type
Front/Rear 0.1 % or less (at
6 ohm
1 kHz)
Subwoofer 0.05 % or less (at
100 Hz)
OTL (output transformerless)
Input sensitivity
circuit
0.7 V (RCA pin jacks)
Pulse power supply
8.0 V (High level input)
RCA pin jacks
High-pass filter
50 – 150 Hz, –12 dB/oct
High level input connector
Speaker connector
System Section
(stereo)
Power requirements
12 V DC car battery
50 watts
4 (at 4 ohms)
(negative ground)
Subwoofer output:
Power supply voltage
120 watts
1 (at 6 ohms)
10.5 – 16 V
Current drain
at rated output: 19 A
Front/Rear outputs:
Remote input: 1.5 mA
22 watts 4 (100 Hz – 20 kHz,
Dimensions
Approx. 380
1 % THD, at 4 ohms)
(w/h/d) (15
Subwoofer output:
incl. projecting parts and
60 watts (100 Hz, 1 % THD, at
controls
6 ohms)
Mass
Approx. 6.4 kg (14 lb.) not incl.
accessories
50 Hz – 50 kHz ( dB)
Supplied accessories
Mounting screws (ø5
ø5
25: 4), Fittings (4),
Terminal Cap
Optional accessories
Connecting cord for power
amplifier RC-46
Design and specifications are subject to change
without notice.
Precautions
•This unit is designed for negative ground 12 V
DC operation only.
•Use speakers with an impedance of 4 ohms.
•Do not connect any active speakers (with built-in
amplifiers) to the speaker terminals of the unit.
Doing so may damage the active speakers.
•Avoid installing the unit in areas subject to:
— high temperatures such as from direct
sunlight or hot air from the heater
— rain or moisture
— dust or dirt.
•If your car is parked in direct sunlight and there
is a considerable rise in temperature inside the
car, allow the unit to cool down before use.
•Be sure to install the unit horizontally so that the
air duct of the cooling fan or its fin will not be
covered with carpet etc.
•If this unit is placed too close to the car radio or
antenna, interference may occur. In this case,
relocate the amplifier away from the car radio or
antenna.
•If no power is being supplied to the master unit,
check the connections.
•This power amplifier employs a protection
circuit* to protect the transistors and speakers if
the amplifier malfunctions. Do not attempt to test
the protection circuit by covering the heat sink or
overloading the circuit.
•Do not use the unit on a weak battery as its
optimum performance depends on a good power
supply.
•For safety reasons, keep your car audio volume
moderate so that you can still hear sounds
outside your car.
Troubleshooting Guide
The following checklist will assist in the correction of most problems which you may encounter with your unit.
Before going through the checklist below, refer to the connection and operating procedures.
Problem
Cause/Solution
The POWER/PROTECTOR
The fuse is blown. n Replace the fuse with a new one.
indicator does not light up.
The ground lead is not securely connected. n Fasten the ground lead securely
to a metal point of the car.
The voltage going into the remote terminal is too low.
The connected master unit is not turned on. n Turn on the master unit.
The system employs too many amplifiers. n Use a relay.
Check the battery voltage (10.5 – 16 V).
The remote control lead of the car audio is not connected to the remote terminal
when making a line input connection. n Be sure to connect the remote control
226 190 mm
lead of the car audio to the remote terminal.
9 7
1
/
in.) not
2
The POWER/PROTECTOR indicator
Use speakers with suitable impedance (4
flashes.
The speaker outputs are short-circuited. n Rectify the cause of the shortcircuit.
The unit heats up abnormally.
Alternator noise is heard.
The power connecting leads are installed too close to the RCA pin cords. n
Keep the leads away from the cords.
The ground lead is not securely connected. n Fasten the ground lead securely
20: 4,
to a metal point of the car.
Negative speaker leads are touching the car chassis. n Keep the leads away
from the car chassis.
The subwoofer sound is too low.
The level adjustment control is set to the "MIN" position.
Fuse Replacement
If the fuse blows, check the power connection and
replace the fuse. If the fuse blows again after
replacement, there may be an internal malfunction.
In such a case, consult your nearest Sony dealer.
Warning
When replacing the fuse, be sure to use one
matching the amperage stated above the fuse
holder. Never use a fuse with an amperage rating
exceeding the one supplied with the unit as this
could damage the unit.
* Protection circuit
This amplifier is provided with a protection circuit that
activates when a DC current is generated.
The color of the POWER/PROTECTOR indicator will change
from green to amber, and the unit will shut down.
If this happens, turn off the connected equipment, take out the
cassette tape or disc, and determine the cause of the
malfunction. If the amplifier has overheated, wait until the
unit cools down before use.
If you have any questions or problems concerning
your unit that are not covered in this manual,
please consult your nearest Sony dealer.
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