how do i set the deck to get rid of an annoying screechy sound....when i play loud it seems that the treble goes up and it makes a terrible sound that seems to ring in your ears....it goes away if i set the bass boost but then theres to much bass....the highs in the song sound great but it seems my speaks go off on there own and produce their own highs
i kno it didnt do that before but i screwed with some settings and i have no idea what i did to make it sound like crap
i guess ill have to restore factory settings?

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Soon to be gear: Amp: Alpine MRP 450 MONO
Subs Two Pioneer TS-W307D2/D4----12"
Box 1 cu ft/chamber sealed
Deck pionner DEH P6800
Front spks 5.25 kenwoods
Rear spks 6x9 pioneer 3 ways
caps Raptor 1 farad
Wiring Streetwires 4 gauge wiring kit
Battery Interstate
Alarm viper 2 way
some mismatched brands but lots of good gear coming together