Posted June 24, 201213 yr Ok I'll explain what is in his car, Alt is stock for now (his excessive amperage one just blew, again)Batteries are two kinetik 2000's( one up front one in back) Runs of 1/0 and 3/0 to the backBig three in 1/03/0 wires and 1/0 wires and 4 awg wires to ampsHead unit is a double din pioneer and 3 premiums on the back, Subs are two 15" dc xls dual 1's Amp for subs is a saz3500 Door speakers are kicker coaxials powered by a boss 2 channelHe has four 6" selenium mids powered by a jl audio 2 channel And that was his setup and everything has been going fine. Now, he just bought two selenium horns and two selenium supertweeters (st200's) and a Boston acoustics amp from the ssa store to power them. He wired those up and now we hear a whining noise from the horns and tweets. We looked up what it could be and sites say there is a ground loop? All the grounds on the amps go to the chassis except the boss amp, it goes to the battery in the back. Said something about RCA ground? Can someone explain better? And he used some sort of y splitters from the boss amp to both Boston and jl amps. He doesn't know what to do and neither do I really, I say we must start all over and rewire everything but he wanted me to ask you guys first Thanks in advance.
June 24, 201213 yr Noise Troubleshooting GuideFollow the guide, you will eventually locate the noise. More often than not it's either a poor ground at the amplifiers or at the headunit. Though my guess would be that he's had some alternator whine the entire time, but the sensitivity of the horns & supertweeters coupled with the added amplifiers in the system simply made it much more audible/prevalent.Also, for reference, that's a terrible speaker setup.
June 24, 201213 yr Author Noise Troubleshooting GuideFollow the guide, you will eventually locate the noise. More often than not it's either a poor ground at the amplifiers or at the headunit. Though my guess would be that he's had some alternator whine the entire time, but the sensitivity of the horns & supertweeters coupled with the added amplifiers in the system simply made it much more audible/prevalent.Also, for reference, that's a terrible speaker setup.Thank you. I will look into that guide. Yeah now that I think about it I've always heard whine at low volumes. And yes, the speaker setup is not what I would've went for but it's his setup not mine.
June 27, 201213 yr Author We fixed the problem! We needed to ground out the rca's. Now the whining is not as loud as it use to be, almost not noticeable.
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