Alternator Sounds

[kronik 10+ year member]

Reading about alternator whine, it seems that's from noise induction. That's not what I'm posting about.

Whenever I turn my radio up and my amps start pulling more current, the alternator itself, is really loud.. does this go away with them? It's intermittent as well. It'll do it for like 30 seconds then go away, .. can't consistent reproduce it either. I don't hear anything out of my subs (don't have my speaker baffles from Mr. Marv for the CDTs yet). What could this be? The alternator has never had to do this much work before today because I just got my amps installed and the gains set.

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[jacko 10+ year member]

take your RCA's off the zapco. If you drive around with everything connected/on except the zapco RCA's, and you still here noise thru the speaks, then it's an amp grounding prob. If their is no noise thru the speaks, then the noise is brought in thru either the deck or the RCA's. Make sure your RCA's are at least 12" from your power wire, if this is not possiable and you don't have good RCA's with a ground thru them, just wrap a 16ga wire (about 15 feet of wire for a 10 foot RCA to give u an idea) and ground one end of that wire. Do that for the power if that doesn't work. If not it's the deck. Try a new one or try giving the deck it's own ground. But then again, Pioneers are known for having bad ground planes in them for the RCA's, mine did . However if you'd like to further isolate it to the deck/RCA's, take a portable cd player and hook it up right to the amps(make sure it either has a line out and you know the output voltage, or you just make sure you don't make the amps clip) oh well. Also you said it doesn't do it in your subs, try switching the sub/speak RCA's to check for bad RCA's. I hope this helps.