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
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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.
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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.
