Pioneer GM-4000 User Manual

Installation
¢ Be sure to use the parts supplied and install the unit securely. If Example of Positions of Installation
parts other than those supplied (specified) are used, they may
loosen or cause damage to internal parts.
* Be sure to install the unit in a place where the driver is not both-
ered and where there is no danger of passengers being injured in
case of sudden stops.
« Be sure to consult your dealer before making any holes in the car.
* Cooling efficiency is degraded by making installations in hot
places such as near the heater outlet, in the glove compartment
and under floor mats that are tightly closed.
* To prevent short-circuits, be sure to disconnect the negative bat-
tery terminal before wiring the system up.
When you finish the installation, be sure to make one more check
to be sure everything is done correctly. Reinstall all car parts that ~
inside the trunk ge te ae ee ee Be ee ee
{Drill a hole into the passenger compartment
and pass the leads through it.)
10

Pioneer GM-4000 Specifications

General

Brand	Pioneer
Model	GM-4000
Category	Amplifier
Language	English

Summary

Features

Controls and their Use

Input Level Control

Adjusts the input signal level to prevent distortion or low output.

Low Boost Switch

Enhances low-frequency sounds for improved bass response.

Connecting the Units

Low Pass Filter (LPF) Switch

Filters output to low frequencies, suitable for sub-woofers.

Mode Select Switch

Switches between stereo (2CH) and mono (1CH) amplifier modes.

Load Impedance Select Switch

Adjusts for speakers with an impedance less than 4 ohms.

Compulsory Fan Cooling Air Inlet

Air intake for the internal cooling fan to prevent overheating.

Power Indicator

Light that indicates when the unit is powered on.

Installation Guidelines and Connections

Connecting the Continuous Power Supply Lead

Guide for routing and connecting the main power supply wire.

Connecting Speaker Leads

Instructions for connecting speaker leads in stereo or mono modes.

When Combined with a Car Stereo with RCA Pin Jacks

Wiring instructions for connecting to car stereos with RCA outputs.

When Combined with a Car Stereo with DIN Sockets

Wiring instructions for connecting to car stereos with DIN sockets.

Installation

Example of Positions of Installation

Visual guide showing recommended locations for mounting the amplifier.

Attaching the Brackets

Instructions for attaching mounting brackets to the amplifier unit.

For Installation on the Floor Mat or Chassis

Method for mounting the amplifier directly onto the car floor or chassis.

Care and Maintenance

In Case of Trouble

Troubleshooting guide for common operational issues and solutions.

Specifications