Boss Audio Systems GT 1380 User Manual

AUDIO SYSTEMS

CONTENTS

Congratulations! 3

Specifications 3

A M P L I F I E R S

Bridged Speaker Wiring with a Four Channel Amplifier 10

Dual Tri-Mode Speaker Wiring with a Four Channel Amplifier 11

Bridged Speaker Wiring with a Five Channel Amplifier 12

Dual Tri-Mode Speaker Wiring with a Five Channel Amplifier 13

Features 4

About Protection Circuitry 5

Amplifiers and 2 Ohm Operation 5

Electrical Wiring 6

Mounting the Amplifier 6

High Input Wiring 7

Mode Switch Settings 8

Low Level Input Wiring 9

Four Channel Amplifier Speaker Wiring 10

Five Channel Amplifier Speaker Wiring 12

Precautions 14

GT 1180

GT 1380

GT 1480

GT 1580

Troubleshooting 15

A M P L I F I E R S

Congratulations on your purchase of a BOSS Audio Systems GT car audio amplifier.GT amplifiers are designed and engineered in the USA to the highest level of quality, and will afford you years of listening enjoyment.

All GT amplifiers utilize fully-regulated MOSFET power supplies, which ensures that switching response is extremely fast and output power is clean.

Thank you for making BOSS Audio Systems your choice for mobile audio entertainment.

AUDIO SYSTEMS

MODEL

Power Max (2 Ohms)

Power RMS (4 Ohms)

Bridged Power (4 Ohms)

S/N Ratio

Low Pass Crossover (Variable)

High Pass Crossover

Bass Boost (Variable)

Tri-mode Operation

Inputs

Remote Subwoofer Level Control

Frequency Response

THD (at RMS Output)

Channnel Separation

Damping Factor

Fuse Rating

Dimensions

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

GT 1180 GT 1380 GT 1580

400W x 4

100W x 4

800W x 2

103 dB

Continuously-Variable, 45Hz-90Hz

150Hz

0 - +18dB

YES

Line Level and Speaker Level

YES

9Hz - 50KHz (+/- 3dB)

0.01%

90dB

150+

20A x 2

12-1/4" (L) 16-1/2" (L) 19-1/4" (L)

500W x 4

150W x 4

1000W x 2

103 dB

150Hz

0 - +18dB

YES

0.01%

90dB

150+

25A x 2

500W x 4 + 500W x 1

80W x 4 + 150W x 1

1000W x 2 + 500W x 1

103 dB

150Hz

0 - +18dB

YES

0.01%

90dB

150+

35A x 2

GT 1480

600W x 4

200W x 4

1200W x 2

103 dB

150Hz

0 - +18dB

YES

0.01%

90dB

150+

80A x 1

20-1/2" (L)

A M P L I F I E R S

F E A T U R E S

Four Channel Amplifiers GT 1180, GT 1380, GT 1480

Four Channel Bridgeable MOSFET Amplifier Tri-Mode Capable Heavy-duty Aluminum Alloy Heatsink Class A-B Operation Continuously-Variable Low Pass Crossover: 45Hz-90Hz Bass Boost Switch: 0 to +18dB

Remote Subwoofer Level Control Continuously-Variable Input Gain Control High Pass Crossover: 200Hz Nickel Plated RCA And Speaker Level Inputs Remote Turn-On/Turn-Off Circuit

MOSFET Pulse Width Modulated Power Supply 2 Ohm Stable Stereo Operation with Output Power Increase Soft Turn-On Circuit

Thermal and Speaker Short Protection Circuitry

LED Power and Protection Indicators

AUDIO SYSTEMS

Built-in Crossover

All GT amplifiers feature built-in electronic crossovers.

The MonoBlock amplifier (GT1000M) features an continuously-variable low pass and an +18dB Bass Boost switch.

The 2 Channel, 4 Channel and 5 Channel GT amplifiers feature continuously-variable low pass crossovers and fixed high pass crossovers. They also all feature a +18 dB Bass Boost switch.

All GT amplifiers have been designed to utilize 100% MOSFET power supplies, ensuring extremely rapid switching response for plenty of clean power.

Protection Circuitry

The amplifier protection circuitry will disable the amplifier if the inputs are overloaded, short-circuited or if extremely high temperature conditions are detected. When the protection mode is in operation, the LED indicator on the front panel will be illuminated, indicating the amplifier has gone into a self-preservation mode.

If you observe that the protection LED is lit, please check the system carefully to determine what has caused the protection circuit to engage. The amplifier can be reset by turning the remote power off and then on again. If the amplifier shuts down due to a thermal overload condition, please allow it to cool down before powering up. If the amplifier shuts down because of an input overload or short circuit, be sure to repair these conditions before attempting to power up the amplifier again.

Five Channel Amplifier GT 1580

Five Channel Bridgeable MOSFET Amplifier

Tri-Mode Capable

Heavy-duty Aluminum Alloy Heatsink

Class A-B Operation

Continuously-Variable Low Pass Crossover: 45Hz-90Hz

(all channels)

Bass Boost Switch: 0 to +18dB (CH1-CH4)

Variable Bass Boost: 0 to +18dB (CH5)

Remote Subwoofer Level Control

Continuously-Variable Input Gain Control

High Pass Crossover: 200Hz (Channels 1-4)

Nickel Plated RCA And Speaker Level Inputs

Remote Turn-On/Turn-Off Circuit

MOSFET Pulse Width Modulated Power Supply 2 Ohm Stable Stereo Operation with Output Power Increase Soft Turn-On Circuit

Thermal and Speaker Short Protection Circuitry

LED Power and Protection Indicators

2 Ohm Operation (in stereo mode)

Your GT amplifier was designed to operate effectively at loads as low as 2 Ohms. This means that you can install four 8 Ohm speakers per channel when using parallel wiring. Increasing the number of woofers per channel at low frequencies (up to 100Hz) produces an acoustic coupling effect. This acoustic coupling increases your power output by 3 dB per speaker.

When operating at 2 Ohms, the amplifiers will increase their output power by approximately 50%. The current draw will also increase by about the same amount. So be sure you have enough current to run the amplifiers into a 2 Ohm load. If you lack adequate current, your music reproduction will be distorted.

Please note: The gain control of any car audio amplifier should not be mistaken for a volume control. It is a sophisticated device, designed to match the output level of your audio source unit to the input level of the amplifier. Do not adjust this input level to maximum unless your input level requires it. Ignoring these instructions will result in an input overload to the amplifier, and excessive audio distortion. It can also cause the protection circuit to engage.

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