COGAmax COGA-AMP402 User manual

TROUBLESHOOTING
Q. The audio output is not very loud
A. Make sure that the volume control on the COGA handset is turned up. Make
sure that the master volume control on the back of the amplifier is turned up.
The master volume can be adjusted lower once everything is OK.
Q. I am only hearing 1 channel of my MP3 or other audio source.
A. You must use two horns to hear both channels. Refer to “Dual Horn
Speaker Wiring”
Q. If I connect the amplifier directly to the battery will it drain the battery?
A. If properly connected, No. If the REM terminal should be connected to a
12V source that turns off when the ignition switch is turned off, so that the
amplifier does not take power when the ignition is off.
Successful
Q. the audio output “breaks up” occasionally.
A. Make sure power connections are tight and you are using heavy gauge wire.
Q. The green Power LED blinks
A. This is normal and indicates that the amp is operating at maximum capacity.
SPECIFICATIONS
zPower supply voltage: 12V DC (range from 11.5V to 14.4V)
zTotal harmonic distortion: ≤0.4%
zPer Channel Output Power: 20W RMS, 25W max
zTotal Output Power: 40W RMS, 50W max
zOutput impedance: 4 ohm
zFrequency response: 20 Hz to 30,000 Hz
zSignal to noise ratio: ≥80dB
zStereo separation: ≥45dB
zAutomotive type fuse: 10 Amp
COGA-AMP402
2 CHANNEL 40W
POWER AMPLIFIER
INSTRUCTION MANUAL Rev 2
PREPARATION BEFORE USE
Before you install the amplifier, carefully read all instructions. The quality of
installation will affect the system’s performance and reliability. When you
evaluate the complexity of the installation, you may well decide to seek
professional service. Any car stereo installation center should be able to
provide such services.
zBe sure you have a 12V DC, negative-ground electrical system.
This is the most common power configuration in an automobile.
Some golf carts and truck vehicles provide different voltages, please
check first. Applying a voltage in excess of 12V may cause damage
to the unit and will void the warranty.
zBefore you mount the amplifier, temporarily connect the amplifier and
test to be sure it works. Do not permanently mount the amplifier until
you are sure the connections are correct.
zKeep the power supply and speaker wires as short possible as to
minimize power loss and provide higher audio output from the
system. Be sure that the cooling fins of the amplifier are in free air
and are not against a panel or other surface.
WARNING: Do not touch the amplifier or place flammable objects near it when
operating. The amplifier can get very hot while in use.

POWER AND GROUND WIRING
Connect the +12V terminal of the amplifier to the positive, “+” terminal of the
vehicle battery, and the GND terminal of the amplifier to the ground or the
negative, “-” terminal of the vehicle battery. Use 14 gauge (or heavier) wire.
SINGLE HORN SPEAKER WIRING
The standard configuration consists of a single 4-Ohm Speaker.
When used with the COGApa
handset, the same audio signal is
applied to both channels so it
does not matter which output the
speaker is connected to.
DUAL HORN SPEAKER WIRING
The amplifier can drive two speakers for louder output. When connecting two
output devices, it is essential to observe proper polarity. That is, the left and
right channels must be connected with identical polarity. If the polarity is
reversed there may be cancellation resulting in a lower output volume.
.COGApa HANDSET INPUT
Connect the COGApa handset directly to the
amplifier using the supplied extension cable to the
COGAPA connector on the amplifier.
POWER INDICATOR
The Green POWER LED will come on when power is applied to the amplifier.
It will BLINK as a warning when the max output power has been achieved.
LEVEL CONTROL
After proper installation, adjust the LEVEL control for desired sound quality and
volume.
AUDIO INPUT Connections
The amplifier system can also amplify your favorite audio source. Connect the
audio into the RCA connectors located on the rear of the amplifier unit.
When the R and L audio source inputs
are used, the Dual Horn or output wiring
must be used to be able to hear both
audio channels
Note: When using the Audio Input connections, the REM terminal on the amp
must be connected to a +12V source, which is switched on only when the
ignition is on. Your amplifier will be on and drawing current when there is 12V
applied to the REM terminal. It is very important to ensure adequate airflow
around the amplifier to avoid overheating if you are using the REM terminal.