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Place terminal in a secure 

position so that it won’t 

accidentally contact the 

negative battery post

Power / Ground

cable size

It is critical to use the proper 

power and ground cable. Select 

the size listed here for your 

amplifier model. Always use high 

quality copper cable. 

Cable size recommendations for 

multi amp systems are available 

on our website.

Properly route power, 

speaker and RCA cables 

through the vehicle.

Choose a mounting location 

that will provide adequate air 

ventilation. Mount the amplifier to 

a secure surface. Do not mount 

the amplifier upside down.

Using spade terminals, connect the 

+12V to the power cable from the 

battery, the REM to the source unit 

turn-on wire and the GND to the 

chassis ground..

Bare metal

Connect the RCA cables to 

the INPUT connectors. The 

OUTPUT can be used to 

provide input for a second 

amplifier.

The HI INPUT is for use with 

source units that do not offer 

RCA outputs. Use the supplied 

harness to connect to the 

source unit’s speaker output.

Connect the power cable to the 

positive battery terminal. The 

power cable must be fused 

within 18 inches of the battery 

terminal.

Re-connect the negative 

battery terminal making sure it 

is securely tightened.

Using spade terminals, connect 

the speaker cables to the speaker 

output connectors. Follow the 

diagram below that best fits your 

speaker configuration.

The chassis ground connection 

is critical to the performance 

of the amplifier. Choose a 

location that is close to the 

amplifier. Completely scrape 

away the paint and use a nut 

and bolt if possible.

DO NOT USE AN EXISTING 

FACTORY BOLT!

 

 

 

 

 

 

 

 

 

 

Disconnect 

negative battery 

terminal

Run Cables

Mount Amplifier

Power 

Connections

Signal Input

Low Level RCA

Signal Input

High Level

Positive Battery 

Connection

Re-connect 

Negative Battery 

Terminal

Speaker

Connections

Chassis Ground

Be prepared to disarm your vehicle’s alarm and 

to enter your radio / source unit code.

Stereo

Installation

Before you start

Monoblock 

single woofer

Monoblock 

multiple woofers

Bridged

CAUTION

Many new and factory radios require a reset code when 

disconnected from battery power. This is an anti-theft 

feature. Before unplugging power, you must determine if 

your radio/source unit requires a reset code. Check the 

operation manual for your vehicle or contact the dealer.

1

2

3

6

5

7

10

11

9

4

 

Turn the LEVEL control completely 

counter-clockwise to minimum.

Level Control

8

9V

0.2V

INPUT

LEVEL

6V

0.2V

INPUT

LEVEL

PHASE

0

180

BASS EQ

0

10dB

BASS EQ

0

9dB

BASS EQ

0

12dB

15

35Hz

SUBSONIC

10

40Hz

SUBSONIC

30

250Hz

LPF

35

250Hz

LPF

40

300Hz

LPF

FULL

LP

HP

XOVER

MONO STEREO

MODE

FULL LPF HPF

XOVER

MONO STEREO

MODE

4CH

2CH

MODE

60

1.3KHz

HPF

60

1.2KHz

HPF

10

2.5KHz

HPF

10

1.5KHz

HPF

Right + (gray)

4CH REAR

Ch3 Right + (orange)

Ch3 Right - (pink)

Chassis Ground (black)

Ch4 Left + (blue)

Ch4 Left - (yellow)

Connect to factory speaker wire directly

Right - (brown)

Left - (green)

Left + (white)

Chassis ground (black)

Right + (gray)

Ch3 Right + (orange)

Ch3 Right - (pink)

Chassis Ground (black)

Ch4 Left + (blue)

Ch4 Left - (yellow)

Connect to factory speaker wire directly

Right - (brown)

Left - (green)

Left + (white)

Chassis ground (black)

4ga

Model             Fuse Size       Cable Size

GP-1000.2

GP-1500.2

GP-2000.2

GP-1000.4

GP-1500.4

GP-2000.4

GP-1500.1

GP-2500.1

GP-3500.1D

20A x 1

25A x 1

30A x 1

30A x 1

40A x 1

30A x 2

25A x 2

30A x 2

30A x 2

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

OUTPUT

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

OUTPUT

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

OUTPUT

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

OUTPUT

SPEAKER

OUTPUT

SPEAKER

LEFT

RIGHT

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

OUTPUT

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

CH3

CH4

CH1

CH2

BRIDGED

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