Need help with line noise!!!
 

ok first off hi poeple. any and all help will be apretiated
Just got a new car, Toyota Yaris 2007 sedan
keeped the original stereo unit because its MP3/WMA and has an Aux input,
conected to the front out puts to(not sure whats its called but what im told is does is convert from stipped wire to Rca out put) , then from there to an Audio Planet Preamp to split the signals; front, rear and subs.
from the preamp i have rca cable to the amps, 2 amps Power Acoustic one 4 channel 600w for front and rear, and one 2 channel 520w for the two 10" subs.

OK the stereo unit is grounded to its original place, the thingy that converts the wire is conected to where to preamp grounds, both amps are ground to bolt that hold down the rear seat. 2 of the rca calbes have ground wires, the ones that send the signal to the 4 channel amp, the sub rca cable doesnt have ground wire, the rca calbes that do are grounded to the block where the amps ground.. ok well that my set up,

the problem im having is noise in the system, basically everytime i excelerate you hear a high pitch whining sound, how can i eliminate this?

unground rcas

originaly rca ground werent atached but i atached them to see if it would help any and it didnt

Sounds like alternator whine. Check out some other posts as it has been discussed before. You are running your stock deck so it shouldn't be a problem, but you could try running a different ground from your deck. I could be talking out of my ass but its something to try.

ok ilve already tried running the remote like away from the rca, didnt do anything made sure the rca werent running next to any other power cable for the car still didnt do anything, would have to try another ground for the deck
its really anoying

Any piece of equipment that comes before the amp can be the problem with alternator whine. Make sure you have good solid grounds for any of those accessories. My guess is the deck. I've seen decks use the antenna plug as their only ground. If the deck does have a ground wire installed, try moving it.

I had the same whine in my car, and changing the ground on the deck solved mine.

the LOC and preamp are groundedto a bolt to the chasy should i add the deck ground there too?

If you want an optimal ground, run a wire directly to the - terminal of the battery, otherwise, ground it to the metal support in the dash. For your other grounds, make sure that the bolt is tight and that you removed any paint from the grounding area.

run the power wire on one side and rca's on the other side of the vehicle. line levels use full range which induce notable engine noise. if they are run on diff sides already make sure the line level isnt too close to a power source.