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F. Re-connect the fuse or circuit breaker. Power up the system
and the red LED should be lit. There may be a 2 -3 second delay from
the time that the source unit is turned onto the time that the LED on the
amp lights. This is normal. Once the amplifier power LED is on and
the source unit is playing, you should have sound coming from the
speakers.
Wiring Tips
.
Use grommets when running cables through any metal or sharp
plastic to prevent accidental shorting or shearing.
.
Be certain that the cables don’t interfere with normal operation of
the vehicle’s high current circuits and vehicle management
systems (engine computers, relays, etc.).
LEVEL SETTING
The input levels are adjusted by means of a stereo level control
located next to the input connectors. When the amplifier is operated in
the mono/bridged mode, only the right channel input is active.
A. Turn the input level control on the amp to a minimum position (fully
counter-clockwise).
B. Set source unit volume to approximately 314 of full volume.
C. While playing dynamic source material, slowly increase the
amplifier’s input level until a near maximum undistorted level is heard in
the system.
D. If you are using the amplifier to drive subwoofers, you may want to
use the bass boost circuit. First, engage the switch on the bottom of
the amplifier, secondly, slowly adjust the level on the front panel to
your preference.
PROTECTION CIRCUITS
Your Granite amplifier is protected against both overheating and short
circuits by means of the following circuits:
A main power supply fuse
A fail-safe thermal protection circuit activating at
85OC
Over-current Channel Circuit Breakers
Short-circuit shutdown