basic set up help.
basic settings to start with;
headunit;
bass---at "0"
treble---at"0"
any factory preset eq's---off
any added bass circuits---off
graphic or parametric eq's---flatline at"0"
any media expansion circuits---off,(these are used to improve mp3 playback quality).
bass boost features---off
amplifier;
front ch's;
crossover switch---set to high pass
gain control---set to min
freq control---set to approx 100hz
stereo/mono switch---set to stereo
rear ch's;
crossover switch---set to low pass
gain control---set to min
freq control---set to approx 80hz
stereo/mono switch---set to mono
bass boost circuitry---set to min or off
now your ready to begin;
to avoid problems associated with your headunit running out off power and supplying a clipped signal you should select as your max volume a point approx 20% below max, so if using a scale that goes from 0 up to 35,(like alpine's), you should treat say 30 as your max "safe" volume.
so go somewhere where your not going to offend people, select your headunits safe volume and play a 1khz
test tone,(you can download it from link previously supplied), on repeat.
on your amp's front settings adjust the gain control upwards until the
test tone changes, this change is where your amp is clipping, now back off the gain slightly so the
tone is playing as normal again, thats the front's gain set
now play a 50hz
test tone, and adjust the rear ch's gain in the same manner, as you hear distortion back off slightly, thats the rear's gain set.
now play a dynamic cd that you are familiar with to adjust the crossover freq's to your taste.
when complete you should have a basic setting that you can tweak to get it as you want it, this won't take 10min's, it will probably take day's.
to balance the bass to your front end you should always alter the highest one, so if your fronts drown out your sub, then lower the gain on the fronts, if the sub drowns out the fronts, then lower the subs gain control.
test tones are available from;
http://www.realmofexcursion.com/downloads.htm
HTH