i have been doing car audio for a while and really cant figure this one out ....i had a kenwood ddx7015 in my car for like 3 months ...amp for comps, and an amp for subs....everything perfect , i now put a ddx7017 in the car and get the alternator whine through the front right component speaker only...heres what i checked already

- Interconnects NOWHERE near power wire to amp
- tried 2 new interconnects, same problem
- made sure it was in the front pre out on the back of stereo
- made sure the speaker wires were connected at the amp properly

heres my questions

1) could it be a problem at the crossover ?
2) can there be something wrong with the pre out on the headunit ??
3) what would happen if i put the front comps on the rear pre amp on the headunit


thanks guys

 

I have some minimal alternator whine. I have tried everything under the sun. RCAs, new amp, new HU, new power wire...everything that you can imagine. sometimes, with a certain setup in a certain car, you will get some noise. I don't know how bad it is for you, but I have a musicians ear and hear EVERYTHING. It is a gift and a curse. Nobody else in my car can hear it, so for me its minimal and i'm done dealing with it.

How bad is yours?

 

well i know what yall are going thru! I had it about a month ago till i fixed it. My alternator whine was comming from BAD ground. I had it thru a distro block (which was a bad idea!). I re-grounded it here...

pictures from "Mandos"



ever since then, its been quiet! i did sand those spots down really good!

 

99% of the time it is from a bad ground somewhere. Either your headunit or amps. You can try running the ground from your headunit to the amp. That will get rid of it sometimes.

 

cool, thanks im gonna check my grounds ... i did move my amp a little maybe somethin came lose

 

cool, thanks im gonna check my grounds ... i did move my amp a little maybe somethin came lose