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3. INSTALLATION
In case you install the G7 amplifiers by yourself, please read owner's manual very carefully.
Before you start your installation, please take all steps into consideration, or you can have a DB Drive
or DB Research's authorized dealer check the installation and help set your car audio systems.
3-1. MOUNTING PREPARATION
Disconnect the negative ( ) battery cable before mounting your G7 amplifier or making any connections.
Check the battery and alternator ground ( ) connections.
Make sure they are properly connected and Free of corrosion before selecting a mounting location.
Please also take into consideration cooling efficiency and safety.
3-2. MOUNTING PREPARATION
COLLECTIVE HEAT MANAGEMENT
The G7 amplifier uses a specially designed heat radiation heatsink to avoid excessive heat
from G7 circuitry. But for better heat disipitation, it is recommended to find the mounting
location where you can install G7 where the heatsink fins have better air flow. For safety, you
have to find a dry well ventilated location. Before mounting, be sure the location and drilling
of pilot cables will not present a hazard to any cables, control cables, fuel lines, fuel tanks,
hydraulic lines or other vehicle systems or components.
3-3. +12V, GND, REM CONNECTION
A) 12V ( POWER CONNECTION )
Before mounting G7 amplifiers, disconnect the negative ( ) wire from battery to protect any accidental
damage to the amplifier and the audio system. G7 150.4, G7 250.4, G7 500.4, & G7 1250.1 are designed
to use, at a minimum, 4 gauge power and ground cables G7 2500.1, G7 3500.1, G7 5000.1 are designed
to use, at a minimum, 0 gauge cables.
Connect the power cables to power terminal labeled as + 12V.
G7 amplifiers are not equipped with fuses so you need to install external fuses.
MODEL
FUSE
G7 1250.1
150A
G7 2500.1
200A
G7 3500.1
300A
G7 5000.1
500A
G7 150.4
80A
G7 250.4
150A
G7 500.4
200A
B) GND ( GROUND CONNECTION )
Locate a secure grounding connection as close to G7 amplifiers as possible.
Make sure the location is clean and provides a direct electrical connection to the frame
of the vehicle.
Connect one end of a short piece of the same gauge cable as the power cable to the grounding point.
Run the one end of the cable to the grounding point.
Run the other end of the cable to the mounting location.
Connect the ground cable to the screw terminal labeled as GND.
RECOMMENDED FUSE VALUES
In order to install external fuses, connect one end of the fuse holder
to the power cable and the other end of fuse holder within 18in of the
positive battery terminal, using the same cable gauge. This fuse
location will protect the system and the vehicle against the possibility
of a short circuit in the power cable. Be sure to use fuses and fuse
holder adequate for the current draw application.
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