Amplifier Owner’s Manual
SYSTEM TUNING
1.Install all system fuses.
2.Set the amplifier’s input sensitivity controls to their minimum positions (full counterclockwise).
3.Set all amplifier crossover switches according to your system’s design.
4.Make preliminary adjustments to the crossover frequency, usually 80Hz is good starting point for high and low pass. It may be necessary to fine tune the crossover frequency later for the best overall sound quality.
5.If using a Remote Subwoofer Level Control, set it to maximum (full clockwise).
6.Turn the headunit on with the volume set to minimum.
7.Visually check the amplifier’s has powered on by the power LED.
8.Check the condition of all other components to make sure they are powered up.
9.Set the headunit’s tone controls, balance, and fader to the center (flat) position. Turn off any loudness or other signal processing features.
10.Set the volume control of the headunit for maximum undistorted output (on most headunits this will be approximately 7/8 of maximum volume). Use a very clear, dynamic recording and begin to listen.
11.Turn up the sensitivity or input level control on the amplifier until the speakers reach maximum undistorted output.
12.Repeat sensitivity level adjustments one at time for each set of channels.
13.Reduce the headunit’s volume to a comfortable level.
14.Listen to various musical selections to check the overall system balance. Compare front to rear, midbass to midrange, etc. If one speaker set is too loud compared to another, then its level must be lowered to blend correctly with the other speakers.
Note: For subwoofers controlled by the Remote level control, keep the level setting from step 11 or 12. Use the control to blend subwoofers with the rest of the system. The correct subwoofer volume will change depending on road noise and differences in recordings.
15.Fine tune crossover frequencies to achieve the smoothest possible blending of each speaker set.
16.Adjust the Bass Equalization/Boost Controls on the amplifier, headunit or processor upstream if necessary to increase output.
Note: Use these controls sparingly. Every 3dB of boost requires double the power at 45Hz. If your subwoofer system requires a lot of boost to sound good, there may be a problem. Look for
17.With all levels set correctly, the system will reach overall maximum undistorted output at the volume level set in step 10.
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