CCOPYRIGHT HOLDEN 2004

Reproduction in whole or part prohibited

without written approval of Holden LTD

FD1282 27AUG04

Sound System Upgrade

Owner's Manual

Contents

Amplifier............................................................................................................3

Introduction .................................................................................................3

Amplifier Controls .......................................................................................3

General Amplifier Controls ..........................................................................3

Operating Indicators ...................................................................................3

Bass Boost..................................................................................................4

Crossover Selector Switch..........................................................................4

Level (Gain) ................................................................................................4

Amplifier Connections.................................................................................5

Technical Specifications (Amplifier) ............................................................5

Subwoofer (Optional)........................................................................................6

Introduction .................................................................................................6

Subwoofer Controls ....................................................................................6

Tuning.........................................................................................................6

Subwoofer Connections..............................................................................7

Technical Specifications..............................................................................7

Page 2 of 8

Amplifier

Introduction

The Holden accessory amplifier

is a key element in the Holden

sound system upgrade package. The

amplifier has several adjustment features

that allows the user to customise the audio

system to their specific requirements. The following

details are presented to assist users to customise the audio system output.

Amplifier Controls

General Amplifier Controls

All of the amplifier adjustable features are set up so that customisation is

possible on the front speakers only or the rear speakers only. When the

optional subwoofer is present, the amplifier will not change the subwoofer

settings. The subwoofer has a separate built-in amplifier and adjustable

features.

Operating Indicators (1 & 2)

Green LED: The indicator is only illuminated when the amplifier is active.

Red LED: The indicator is only illuminated when the amplifier has a

fault or a failure. Under normal operation, the LED is inactive.

Page 3 of 8

FRONT

CH1

CH2

LINE-IN

CH3

REAR

CH4

REAR

FRONT

LEVEL

8V 100mV

CROSSOVER

SELECTOR

FLAT HP LP

65Hz 450Hz

HI PASS

65Hz 450Hz

40Hz 450Hz

LOW PASS

40Hz 450Hz

0dB +18dB

BASS BOOST

PROTECTION

POWER

7 4 5 6 3

Bass Boost (3)

By increasing the bass boost (3) from 0dB to 18dB, the amplifier is effectively

intensifying the low frequency (bass) sounds.

NOTE: The more bass that is introduced into the audio system, the more

power is consumed. The audio system has a set power capacity, therefore

bass increases tend to reduce the overall volume output of the amplifier.

SUGGESTION: If the audio system has the optional subwoofer fitted, it is

possible to decrease the bass boost on the amplifier (door speakers) and gain

on volume in the passenger compartment whilst maintaining sufficient bass

via the subwoofer.

Crossover Selector Switch (4)

The crossover switch (4) allows the frequency of the output signals from the

amplifier to be adjusted.

FLAT setting: The output signals from the amplifier are in the same proportion

as the input signals. When "FLAT" is selected, the "HI PASS" knob (5) and

"LOW PASS" knob (6) are inactive. FLAT is the factory default.

HP Setting: By selecting this position, adjustment is possible with the "HI

PASS" knob (5). By adjusting the "HI PASS" knob from 65Hz to 450Hz, this is

effectively removing lower frequencies (bass) from the signal that is being

amplified and sent to the speakers.

SUGGESTION: If the audio system has the optional subwoofer fitted, it is

possible to increase the "HI PASS" setting on the amplifier (door speakers)

and gain on volume in the passenger compartment, whilst maintaining

sufficient bass via the subwoofer.

LP Setting: By selecting this position, adjustment is possible with the "LOW

PASS" knob (6). By adjusting the "LO PASS" knob from 40Hz to 450Hz, this

is effectively removing higher frequencies from the signal that is being

amplified and sent to the speakers.

NOTE: It is not advisable to use the "LO PASS" setting in this vehicle

application.

Level (Gain) (7)

It is not recommended that the gain (7) is changed

from the factory preset setting (2 Volts) as shown.

Page 4 of 8

REAR

FRONT

LEVEL

8V 100mV

Level (Gain) continued

NOTE: It is important to have both front and rear level knobs adjusted to the

same position to ensure the volume output of the speakers is equal in both front

and rear seating positions.

Increasing gain will not increase the overall volume of the audio system.

Adjustments will only cause the maximum output to be achieved earlier in

volume adjustments of the headunit. For example, factory setting (2V) will

achieve maximum volume with a headunit setting of approximately 45. A

customised setting of 200mV will achieve maximum volume with a headunit

setting of approximately 30. Increasing gain will also increase susceptibility to

electrical interference.

Decreasing gain has the opposite effect of increasing gain. (Decreasing gain is

not recommended.)

Amplifier Connections

Technical Specifications

Quad mode - max power 4 x 100 Watt / 4 Ohms

Quad mode - RMS power 4 x 50 Watt / 4 Ohms

Stereo mode - max power 2 x 320 Watt / 4 Ohms

Stereo mode - RMS power 2 x 160 Watt / 4 Ohms

Frequency response 10 Hz to 30,000 Hz

Signal to Noise Ratio Greater than 90 dB

Stability 2 Ohms

Input sensitivity 0.1 to 8.0 Volts

Low-pass filter 40 to 450 Hz

Hi-pass filter 65 to 450 Hz

Bass boost 0 to 18 dB Page 5 of 8

REAR

BRIDGE MODE

CH4

CH3

CH2

CH1

BRIDGE MODE

FRONT

GROUND

REMOTE

SUPPLY

+12V

FUSE FUSE

ORANGE

DARK BLUE

BROWN/WHITE

LIGHT GREEN

DARK GREEN

BROWN

GREY

BLACK 4mm

WHITE 2mm

RED 4mm

RED 2mm

RED 4mm

25 AMP

YELLOW

BLACK 4mm

WHITE 2mm

Page 6 of 8

Subwoofer (Optional)

Introduction

The Holden accessory subwoofer is an optional

element in the Holden sound system upgrade

package. The subwoofer has several adjustment

features that allows the user to customise the

audio system to their specific requirements. The

subwoofer does not have a factory preset and

requires tuning prior to completion of installation.

Subwoofer Controls

Tuning

NOTE: It is desirable to have the listener in the passenger compartment who

instructs an assistant tuning the subwoofer.

The following procedure is provided to assist with the tuning process.

1. Set the controls to the following positions.

a. Phase (2) at 0°

b. Crossover (3) at 120 Hz

c. Gain (4) at minimum (8 Volts)

2. Turn on the audio system and select a familiar music track from a CD.

3. Turn up your audio system volume to a moderate to high listening level.

POWER

ISSAC

LIMITER

PHASE

180°0° 120Hz60Hz 0.2V 8V

CROSSOVER GAIN

4321

The remaining tuning procedure, steps 4 to 5, may involve several

iterations in order to achieve an optimal bass sound. (This will depend on

listener preferences.)

4. Slowly turn up the gain control (4) until you clearly hear an increase in the

bass level.

5. Using the crossover control (3), adjust the crossover frequency to produce

a well-balanced bass sound.

6. Adjust the phase control (2) so that the bass blends as best as possible

into the overall sound and is not heard as a distinct source. The

recommended setting in this application is 0 degrees.

7. Check for overdriving of the subwoofer.

a. Turn the bass control on the headunit to maximum.

b. Increase the volume on the audio system to maximum undistorted

sound inside the passenger compartment.

c. Overamplification caused by a too a high gain setting (4) will lead to

distorted reproduction and can irreparably damage the loudspeaker. If

the indicator LED (1) flashes with the music, then it is recommended

to reduce the gain setting (4). If gain changes are required, repeat

steps 4 and 5.

IMPORTANT: Maximum gain is at 0.2 Volts, minimum gain is at 8

Volts.

Subwoofer Connections

+12V

FUSE

20A

HIGH LEVEL

INPUT

LINE INPUT

Page 7 of 8

BLACK

(3mm)

WHITE

(0.5mm)

RED

(3mm)

RED RCA

CONNECTOR

BLACK RCA

CONNECTOR

Refer to your Holden Dealer for further information.

Holden Ltd

ABN 84 006 983 232

241 Salmon Street Port Melbourne

Victoria 3207 Australia

Subsidiary of General Motors Corp

All correspondence to:

PO Box 1714 Melbourne

Victoria 3001 Australia

Telephone (03) 9647 1111

Facsimile (03) 9647 2550

Please note that all information, illustrations and specifications in this Handbook are based

on the latest production information available at the time of printing.

Holden reserves the right to make any changes at any time without notice and without incurring any obligation.

Technical Specifications (Subwoofer)

Max power 140 Watts

RMS power 70 Watts

Nominal impedance 4 Ohms

Sensitivity (SPL @ 100 Hz) 136 dB

Phase 0 to 180 degrees

Crossover 0 to 120 Hz

Gain 0.2 to 8.0 Volts

Fuse 20 Amps