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whine from behind

  #3  
Old 06-08-2007, 06:53 PM
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Join Date: Feb 2007
Location: Ringgold, GA
Posts: 455
Default RE: whine from behind

It could be all sorts of things. First thing to check is wiring. Make sure your ground wires are big enough and securely grounded.

Make sure your gains are set NO HIGHER than the noon position or halfway.

If the whine persists even with the CD player's volume at 0 then its coming from further downstream. If it goes away with the volume, then you know the HU is the culprit. Try running a dedicated power wire straight to the battery (and fuse it) and then run a dedicated ground wire to the chasis and disconnect the original wiring.

This is just a few things. It could also be your RCA cables. The easy way to find out is to get a set of cheap RCA's and pull out your CD player and run the RCA's from the HU to the amps (not under carpet just lay them across the seats) and see if the noise goes away. If it does then your RCA's are the problem. First they could be amplifying noise if theyre shielded or they could just be letting outright noise into the signal path. Get a good set of UNSHIELDED cables.
 
  #5  
Old 06-15-2007, 10:51 AM
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Join Date: May 2007
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Posts: 121
Default RE: whine from behind

it could be a bad ground within the cd player rca's or it could be amp related if you have an hu sending volts and the amp is a low end amp it could cause to whine. (what is amp/HU brand?)
 
  #6  
Old 08-16-2007, 10:27 PM
Join Date: Aug 2007
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Posts: 20
Default RE: whine from behind

I don't know if it's the same problem but if the rca cables are close to the power cables you will hear the sound of the alternator belt through your low tone speakers, I'm not sure if that's what you mean, but I had that problem until the two wires were routed away from each other
 
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