a very interesting dual amp problem

Willis_98GT · May 1, 2010

ok so i have a 4channel that runs all the speakers and i have a 2channel for my sub, i rewired the 460 a while back when i put a better deck in long story short. and this configuration has been in existance for two years now and going.. what i did was get new interior. (black cobra leather yumm) anyways i disconnected everything just so i could pull the rear seat brackets out and whatnot just to exchange the interiors. but when i went back to install the amps everything came on fine, then i turned it off one more time and now the 4channel will come on but the 2 channel wont. or opposites, and if i pull the ground off the 2channel the 4channel will run fine, but if i go to ground the 2channel while the 4channel is on both amps cut off, ive tried multiple grounds and everywhere seems to do it.. im very confused because i am very good with this kinda stuff, yet completely sumped..

ttocs · May 2, 2010

well, it sounds like a ground problem. Was the gound loose or dirty? After 2 yrs it is very possible that some corrosion has krept into your connections. Were the grounds loose and you could wiggle them or where they tight enought that you could not? Did you scrape the paint where it is connicted.

Now go to teh front of the car and check the factory ground from the batt to the chassis and make sure it doesn't move either.

Willis_98GT · May 2, 2010

when i get some spare time im going to the wires backwards and try it with fresh wire.

DropTopPony · May 2, 2010

Is it possible you shorted something when putting in the new interior? When I had my new carpet and leather installed the shop pinched a few of my signal cables and that played havoc on my sound. I would have speakers coming on and off constantly and I couldn't find the problem until I ripped up the carpet to see what happened.