OPERATIONS
13
After the amplifier has been installed and all connections have been made
carefully and securely, turn the radio on to check if the amplifier powers up.
Now turn up the volume slowly from the source unit. If there is no sound
or sound is distorted, turn-off the system immediately and check if all
connections have been made correctly and is secured.
GAIN = INPUT LEVEL CONTROL - To adjust the level control, playback
a soundtrack that you know very well. When adjusting the gain of the
amplifier, turn the volume of your car radio to 2/3 of the maximum volume.
Now turn the gain control of the amplifier from “Min” to “Max” direction until
you can hear distortions. Then turn the level control a little back to “Min”. The
gain control adjustment has now been completed.
Recommendation:
If you are using more then two channels, the adjustments has to be made separately.
To accomplish this unplug the RCA inputs for the channels that are not being
adjusted at this time while the system is off.
ATTENTION! If you use 2 Ohm speakers in stereo mode. Tri-mode or 4 Ohm
speakers in bridge mode and the overload protection is triggered, turn the
gain counter clockwise until the operation is playing normally.
X-OVER FREQUENCY CONTROL
Low Pass Filter - When the crossover control is in the Low Pass position, this
control becomes active allowing you to select your crossover point.
Example:
If you select 40Hz the amplifier will operate below 40Hz, If you select 300Hz the
amplifier will operate below 300Hz.
High Pass Filter - When the crossover control is in the High-Pass position,
this control becomes active allowing you to select your crossover point.
1 x (Push button in OUT position) 40Hz-1.25kHz
10 x (Push button in the IN position) 400Hz-12.5kHz
Example:
If you select 40Hz the amplifier will operate above 40Hz, If you select 1.25kHz the
amplifier will operate above 1.25kHz.
CROSSOVER SWITCH
• Full: Full range frequency.
• Lowpass: Higher frequency above settings will be cut-off.
• High pass: Lower frequency below settings will be cut-off.
SUB SONIC SWITCH - When on cuts off extremely low bass frequencies
(below the range of human hearing, that cannot effectively be reproduced).
The high pass filter is engaged when the subsonic switch is On. This
improves efficiency of the amplifier’s power supply, improves sound
reproductive performance, and reduces chances of damaging the subwoofers.
BASS BOOST CONTROLS - Continuously adjusts from 0 to 18dB of
boost centered at 45Hz.
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