10
9. The Signal detected LED and the 1kHz LED
should illuminate.
10. Slowly turn up the amplifier’s gain setting until
the Distortion detected LED illuminates
continuously, then back down slowly until it just
goes out.
11. You are finished with the gain setting of this
amplifier. Now disconnect the DD-1, connect
the speakers to the amplifier, and set the
crossover to the desired position. See Where
do I set my crossovers section if you need
help with this.
12. Congratulations, you have just set the gain like a
Pro.
Setting the gain of a subwoofer amplifier
1. This procedure should only be done AFTER you
have ensured the headunit puts out a clean
undistorted signal, AND you know where the
maximum undistorted volume setting is.
2. Turn the gain setting of the amplifier to minimum
3. Turn the crossover frequency control to it’s
highest frequency setting.
4. If you have an infrasonic filter (sometimes
erroneously called Subsonic filter) control or
switch, set it to it’s lowest frequency setting or
“off”.
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