Boss Audio Systems GT1500D Manuale utente

GT1500D

GT2500D

A M P L I F I E R S

CONTENTS

Congratulations! 3

Specifications 3

Features 4

Installation 6

Low Level Input/ Speaker/ Power wiring 7

Bridging Two Amplifiers 8

Electrical Wiring 9

Precautions 10

Troubleshooting 11

2200 Watts Mono

1200 Watts Mono

3000 Watts Mono

15Hz-40Hz

12-1/2"(L)

0~180

50Hz-150Hz

100 dB

10K Ohm

25A x 3

50Hz-150Hz

100mV-2V/2V-8V

S/N Ratio

Low Pass Crossover (Variable)

Phase Shift

Input Impedance

Fuse Rating

Power Max (2 Ohms)

Power RMS (4 Ohms)

Power RMS (1Ohms)

Sub Sonic

Frequency Response

Input Sensitivity

(9-5/16"W x 2-3/16"H x ...)

Dimensions

GT2500D

GT1500D

540 Watts Mono

800 Watts Mono

1500 Watts Mono

15Hz-40Hz

11-7/10"(L)

0~180

50Hz-150Hz

100 dB

10K Ohm

20A x 2

50Hz-150Hz

100mV-2V/2V-8V

A M P L I F I E R S

Congratulations on your purchase of a BOSS Audio Systems car audio amplifier.

Class D amplifiers are designed and engineered in the USA to the highest level

of quality, and will afford you years of listening enjoyment.

The Class D amplifiers incorporate a DC-to-DC switching power supply which

has been designed to provide ample headroom for even the most demanding peaks

and dynamic range found on modern recordings.

GT1500D and GT2500D Front

GT1500D Rear

GT2500D Rear

CLASS-D MONOBLOCK AMPLIFIER

GT1500D and GT2500D

One Ohm Stable MonoBlock amplifier

MOSFET Power Supply

PWM (Pulse Width Modulation) System

Glass/epoxy Printed Circuit Board

Nickel-plated RCA Input and Bypass Output jacks

Nickel-plated Speaker and Power Terminals

Protection Circuitry Against Thermal, Overload and Short Circuit Faults

Variable Subsonic Filter (15Hz-40Hz, 24dB/octave)

Variable Low Pass Filter (50Hz-150Hz, 24dB/octave)

0/180 Phase Selector

Remote Subwoofer Level Control

A M P L I F I E R S

F E A T U R E S

Capacitor

Installation Low Level Inputs / Speaker / Power Connections

GT1500D and GT2500D

Distribution Block

Power Connections

To Inputs of

Satellite Amplifier

From Outputs of

Head Unit

SPEAKER IMPEDANCE

4 - 8 OHMS!

NOTE: The amplifier may receive its input signal from a head unit or signal processors subwoofer output.

Important Installation Considerations and Precautions

The design philosophy of this amplifier requires strict adherence to proper installation and

load impedance instructions. The minimum recommended impedance is 2 Ohms.

The fuse rating for the GT1500D is 40 amperes (2 x 20A fuses) and the GT2500D carries a

fuse rating of 75 amperes (3 x 25A fuses). Although sufficient for normal working conditions,

overloading of the amplifier may cause these fuses to blow. Please try to avoid overloading

the amp in this manner.

Take extreme caution when mounting the amplifier, so as not to damage the chassis

with a drill or screwdriver.

Run a 4 gauge wire (as short as possible) to the closest chassis ground point.

Be sure to remove the paint at the connection to the chassis of the vehicle for a good

electrical connection.

Using RCA interconnect cables, connect all line inputs and outputs per the wiring

diagrams which follow if possible, keep the RCA cords away from the 12V power and

Ground wiring.

Mount the amplifier so that air flow is not restricted.

Mount the amplifier to a solid surface, as these amplifiers are extremely heavy.

Place the fuse holder near the amplifier on the 12V POSITIVE lead.

Run a 16 gauge (or larger) wire to the remote turn-on lead of the head unit.

Connect the speaker(s) as per the wiring diagrams in this manual.

Set the controls as described in the following sections of this manual.

Run a 4 gauge wire from the battery, using a fuse within 18 (457mm) of the positive

battery terminal. The purpose of this fuse is to protect the battery in the event that

this wire accidentally contacts the chassis ground on its run to the amplifier.

While these amplifiers are designed to operate with a minimum load of 1 Ohm, it is highly

recommended that you design your system to operate with 2 Ohms minimum impedance.

Operating a GT digital amp with a speaker impedance load of under 1 Ohm may

result in poor sound quality and serious damage to the amplifier circuitry. Damage to your

amplifier caused by operating with a load of less than 1 Ohm is not covered under the

warranty for this product.

(BRIDGED SWITCH : MASTER POSITION)

(BRIDGED SWITCH : SLAVE POSITION)

To Inputs of

Satellite Amplifier

From Outputs of

Head Unit

SPEAKER IMPEDANCE

4 - 8 OHMS!

Electrical Wiring

Mounting the Amplifier

Fuses

When making electrical connections to the amplifier, please observe the following:

All BOSS series power amplifiers are equipped with easy top access screw

terminals. These terminals are n in order to ensure excellent

electrical contact and to resist corrosion.

ickel-plated

Use at least 8 gauge or heavier wire for power and ground connections.

Wire the amplifier directly to the car battery. Make sure there is circuit protection

(such as a fuse) on the positive power lead, within 18 inches of the battery.

For the ground connection, use the shortest possible wire to a good chassis

ground point.

Wire the Remote connection to the remote turn-on lead of your equalizer or head

unit. In some cases this may be the power antenna lead of the head unit.

Fuses protect both the amplifier and the electrical system of your vehicle from

faulty conditions. If you must replace the fuse in your Riot amplifier, use a fuse

of exactly the same type and rating. A different type or rating may result in damage

or cause a fire.

Mark the location for the mounting screw holes by positioning the amplifier where

you wish to install it and use a scribe (or one of the mounting screws) inserted in

each mounting hole to mark the mounting surface. If the mounting surface is carpeted,

measure the hole centers and mark with a felt tip pen.

Drill pilot holes in the mounting surface for the mounting screws and insert the mounting

screws into these holes. Tighten them securely.

Note: Before beginning your installation, be sure to take note of any wires, lines or

other devices in your vehicle which may be located behind any mounting surface.

Your BOSS digital amplifier is equipped with a dashboard mount remote subwoofer

level control. Run the supplied dashboard remote control from the front panel of

your amplifier. By turning the level knob clockwise, you will increase the output

of low frequencies.

Remote Subwoofer Level Control

Bridging Two Amplifiers

GT1500D and GT2500D

Precautions

Before you drill or cut any holes, investigate your car's layout very carefully. Take care

when you work near the gas tank, fuel lines, hydraulic lines and electrical wiring.

Do not operate the amplifier when it is not mounted. Attach all audio system components

securely within the automobile to prevent damage, especially in case of an accident.

Do not mount this amplifier so that the wire connections are unprotected or in a pinched

condition, or likely to be damaged by nearby objects.

Before making or breaking power connections in your system, disconnect the vehicle

battery. Confirm that your head unit or other equipment is turned off while connecting

the input jacks and speaker terminals.

If you need to replace the power fuse, replace it only with a fuse identical to that supplied

with the system. Using a fuse of different type or rating may result in damage to your

system which isn't covered by the manufacturer's warranty.

Disconnect all RCA inputs to the amplifiers. If the hiss disappears, then

plug in the component driving the amplifier and unplug its inputs. If hiss

disappears, go on until the faulty/noisy component is found.

Troubleshooting

Before removing your amplifier, refer to the list below and follow the suggested

procedures. Always test the speakers and their wires first.

Amplifier will not

power up

Check for short circuits on speaker leads.

Turn down the volume control on the head unit to prevent overdriving.

Remove speaker leads, and reset the amplifier.

If the Protection LED still comes on, then the amplifier is faulty.

Check that all fuses are OK.

Check that amplifier is properly grounded.

Check that Remote Input (turn-on) at amplifier has at least 3 volts DC

present.

Check that RCA patch cords are plugged into correct inputs.

Check speaker wiring.

Reset Level Control.

Check Crossover Control settings.

Check that there is battery power on the + terminal.

Check all fuses.

Check that Remote Input (turn-on) at amplifier has at least 3 volts DC

present.

Check for good ground connection.

Check that Protection LED is not lit. If it is lit, shut off amplifier briefly and

then repower it.

Protections LED

comes on when

the amplifier is

powered up

No Output

Low Output

High hiss in

speakers

In order to obtain the best subjective S/N ratio, set the Input Level to the

lowest level possible which still delivers the volume level you desire.

Troubleshooting, cont.

High squeal noise

from speakers

Check that crossover frequencies have been properly set.

Check for short circuits on the speaker leads.

Distorted sound

Amplifier gets

very hot

Check all RCA interconnects. High squealing noises are almost always caused

by RCA cables with poor grounding. Always use high-quality RCA interconnects

in your audio system.

Check that the Level control(s) is set to match the signal level of the head unit. Always

begin at the lowest setting.

Check that the minimum speaker impedance for that model is correct.

Check that there is good airflow around the amplifier. In some applications, an external

cooling fan may be required.

Engine noise

(static type)

Engine noise

(alternator whine)

Check all RCA interconnects. Engine static noises are almost always caused by RCA

cables with poor grounding. Always use high-quality RCAi interconnects in your

audio system.

Check that there are no shorts between speaker leads or RCA grounds and the vehicle

chassis. Check that the head unit is properly grounded.

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