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Posted: Tue Jun 07, 2005 6:50 pm
by muddybear
another thing. aside from the engine noise that comes throught the speakers when the car is running. theres a slight whine when the car is off. and the sound almost sounds like its coming from the deck. almost like its amplifing the sounds the deck makes. For example, with a CD in the deck and the volume at zero, and when I change tracks, it sounds almost like a record player switch to the next song.
Posted: Tue Jun 07, 2005 6:53 pm
by William from NOLA
It sounds like one of the RCA's is touching metal somewhere or such. Make sure they aren't touching anything they shouldn't or have been split open anywhere.
Posted: Tue Jun 07, 2005 7:29 pm
by muddybear
i don't think thats it since I can plug in any one RCA and it will do it. It doesn't matter which RCA I plug in, or which channel to the 4 channel amp. just one RCA into the amp and it starts making noise. i Doubt all the RCA's are bad or touching metal. also i did not have this problem with the stock deck.
Posted: Wed Jun 08, 2005 12:24 am
by JeremyC
Try disconecting the rca's at the headunit and leave them conected to the amp. If the noise goes away try swapping out the deck .
Posted: Wed Jun 08, 2005 1:10 am
by nightcrawlaa
are your rca's ran on the same side of the car as your power wires(sometimes engine noise can can jump from your power wires to your rca's if they are to close)
Posted: Wed Jun 08, 2005 9:11 pm
by muddybear
well, I picked up a ground loop isolater today for $20. before I pluged it in I tried ground my amps to the same spot, double checking all my speaker wires, switching RCA's around. no change. then I pluged the Isolator into channel one and the sound is gone and everything seems to be working fine.
Except for a small prob. with the volume at zero, there is a very slight hiss coming from the tweeters, I credit this to my crappy american legacy amp. soon to be replaced with JL audio.
now I just need another Isolator for the rear.
Posted: Wed Jun 08, 2005 9:29 pm
by muddybear
oh yeah, thanks guys for all your help. I wouldn't have made it this far without reading through this forum. I'm still a newbie to this audio stuff.
Posted: Wed Jun 08, 2005 9:47 pm
by JeremyC
No problem man, thats what we are here for.
Posted: Thu Jun 09, 2005 3:26 am
by Ryan from Ohio
Glad a GL Iso helped.
I was going to sugguest to run another set of RCAs to just test that...
Posted: Thu Jun 09, 2005 5:08 pm
by muddybear
is that kinda normal to have a quiet hiss coming from the tweeters at zero volume, when powering them with an amp?