Interfire AUTOMOTIVE AMPLIFIER G2-1200, G2-600, G4-800, G2-800, G4-1000 Instruction Manual

2 CHANNEL / 4 CHANNEL / 5 CHANNEL

AUTOMOTIVE AMPLIFIER

INSTRUCTION MANUAL

G2-600 / G2-800 /

G5-900

G2-1200

G4-600 / G4-800 / G4-1000

1

free installation.

Congratulations on your Purchase

• Four Class ''AB'' High-Current Dual Discrete Drive Stages.

• Class ''AB'' Technology MOSFET PWM Power Supply.

• Bridgeable & TRI-Mode Operation.

• Continuously Variable 12dB/Octave High Pass & 12dB
/Octave Low Pass Crossover.

• Subwoofer Variable Crossover for Deep Bass Control.

• Enhanced Bass Boost +12dB @ 50Hz.

• Enhanced Treble Boost +12dB @ 10kHz

• Nickel Plated RCA, Power & Speaker Terminal.

• Soft Start & Muting.

• Overload, Thermal and Short Circuit Protection.

• Power & Protection indicator.

• Bass Level Remote Control(16.4Fit) : G2-600/800/1200

Features

Your new high fidelity bridgeable/stereo amplifier is designed to deliver maximum enjoy
ment and one year of trouble free service. Please take a few moments to read this manual
thoroughly. It will explain the features and operation of your unit and help insure trouble

Precautions: Read First!

authorized installer. It's your car!

• If after reading the directions you feel uncomfortable about installing the amplifier in your
car, or not equipped or competent to do so, you should have the amplifier installed by an

• Negative battery terminal must be disconnected before any electrical connections are made.

• Be sure choose a location that provides substantial ventilation for the amplifier. The most
preferred locations would be in your car's trunk, under the front seats or on the back wall

of a truck.

• The location chosen should provide at least 2" of clearance above the amplifier for adequate
ventilation.

• If the amplifier is to be mounted vertically be sure that it is in a place where adequate air

will flow along the length of its heatsink fins for cooling.

• NEVER mount the amplifier up side down, this will cause the heat to rise back into the

amplifier causing thermal shutdown or possible permanent damage.

• NEVER mount the amplifier in a location that is subject to direct sunlight or exposed to

moisture.

• Be sure to mount the amplifier to a strong, solid surface which will not give way under the

stress of a sudden stop or accident.

• Make sure that the mounting screws will not penetrate the gas tank, brake and fuel lines,

wiring or other critical parts of your car when installed.

• NEVER operate the amplifier without the proper power and ground wire, 10 gauge minimum.

• NEVER operate the amplifier without proper fusing. Fuse holder must be located with in

0.5 meters from the battery. This fuse is to protect the car not the electronics. In case of a

short, the fuse will blow instead of the wire burning up. Using other than the recommended
fuse ratings at the battery and at the amplifier may cause damage to the amplifier and will

• Do not run wiring underneath or outside the car since exposure to the elements may cause

the insulation to deteriorate rapidly, resulting in short-circuits and/or intermittent operation.

• To help minimize interference, it is best to run the power cables along the opposite side

.

• Whenever wires pass through metal, rubber or plastic grommets must be used to prevent

• Whenever possible, use cable ties, mounting clamps and similar wiring aids. (available

from an electrical supply or auto parts store) Adding stress relief loops to wiring is also

• It is best to test the system before the amplifier is mounted and interior of car is reassembled.

• If the temperature inside your car reaches extreme levels(such as sitting locked up for

several hours in the hot sun or exposed to a very cold winter's day)the amplifier may go
into protection mode and shut off. Leave the unit off until the ambient temperature returns

• The amplifier operates with any vehicle using a 12 volt negative ground system. If you are

not sure of the type of electrical system in your vehicle, consult your authorized dealer or

• NEVER ground the speaker leads and NEVER allow the speaker leads to come in contact

• Remote turn on wire must be switched by the radio does not have a remote turn on or

antenna output, connect to wire that has a positive 12 volts when the key is turned to the

• Do not listen to high volumes for extended periods of time or hearing damage may occur.

2

CONTINOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 100dB MAY
CAUSE PERMANENT HEARING LOSS. HIGH POWERED AUTOSOUND SYSTEM

SENSE AND PRACTICE SAFE SOUND.

MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB. USE COMMON

void your warranty.

all cables should be run beneath carpets and inside trim pieces.

from the audio cables

the metal from wearing through the installation and causing a short.

advisable to prevent straining or breakage.

to normal.

qualified mechanic.

with each other. Speaker wire should be 18 gauge or larger.

accessory. If the amplifier does not turn off the battery will die.

INSTALLATION

1. After reading precaution, decide where you are going to install the unit. Also, see Fig.1.

2. Once the location has been determined, place the amplifier into position. Using a felt tip
pen or pencil mark the four holes to be drilled for mounting. NEVER use the amplifier as
a template for drilling. It is very easy to damage the amplifier surface in this manner.

3. Remove amplifier. Drill four 3.5 m/m holes into mounting surface. If you want to mount

4. If possible, test the system to ensure it is operating correctly before final mounting of

5.

INSTALLATION DIAGRAM

FIG.1

3

MOUNTING:

Mount the amplifier using the supplied 4 self tapping screws.

the amplifier to MDF or wood panel, drill four 3.0m/m diameter holes into mounting surface.

the amplifier.

Self Tapping Screws

POWER CONNECTIONS

CONNECTIONS

INPUT CONNECTIONS

It is important to have good quality power and ground connections. Remember, to complete
an electrical circuit, the ground connection is just as important as the positive power
connection. Before any power connections are made, disconnect the ground cable at the

When the power supply lead, memory backup lead or ground lead are extended use a 5mm²
(AWG5) or larger automotive grade cable which will withstand friction and heat to safe

GND = Connect the proper gauge ground wire to the amplifier "GND" terminal. Locate the
position on the chassis of the car to which the amplifier is to be grounded. The surface must
be free from any paint or dirt. This can be accomplished with a small grinding bit, sand
paper or wire wheel. NOTE: Do not ground the amplifier to the "frame of the car. The frame
on most cars and trucks is not grounded to the chassis(body). Use Solder or a clamp ring to
connect the ground wire. Pre-drill the prepped chassis to bolt the ground ring terminal with
nut, bolt and lock washers. Insulate metal and connector with paint or silicon to prevent
rust and oxidation. Silicon also works great to prevent nuts and bolts from working loose in
a harsh environment of an automobile. Upon completion of the ground connection, grab
wire or connector and confirm that it is a solid connection. To prevent engine noise, it is

REM = Connect the remote wire (power antenna output) from the head unit to the remote
turn-on wire of the amplifier. If the head unit is not equipped with a remote/antenna output,
locate a wire that is controlled by the accessory position of the key. It is important to have
the amplifier turn off with the radio or key. If the amplifier remains on, the result will most

12V = Connect the proper gauge power wire to the amplifier "B+" terminal. Run wire to
wards the fuse holder that is no greater then 0.5 meters from the battery. Remember, the
fuse is to protect the safety of the car in the case of a short. Connect fuse holder to battery,

4

This amplifier will accept low level inputs only. Low level is the same as line level. The low
level signal is carried through RCA cables. It is preferred to use low level inputs to the amplifier
if the head unit is equipped with the low level outputs. If not, you can use a "high to low

Connect the low level/line level RCA cables from the head unit, or signal processor, to the

converter" available through your local car audio shop.

line level input on the amplifier. See Fig.2 system wiring diagrams.

battery.

grade against fires occurring as a result of short-circuiting.

recommended to ground the head unit and other audio electronics in the same location.

likely be a dead battery.

but do not install fuse at this time.