I working on my friend's car stereo, and everything works fine, but when I change to the next track i get some interference, I can't really explain how it sounds. I was wondering what you may think it is. I think it's because she has mono type RCA cables because she had an mono amp in her car before she got a stereo amp. I have messed with the ground and that didn't help. Any other suggestions.

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Replies (6)

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compvr15s on 04/3/2003 19:07:21
did you make sure that the RCAs are on the opposite side of the vehicle as the power cable. i know a good ground will do that do, cuz my compvrs were making a horrible noise and it was the ground to my kicker kx 600.1s mono amps. i figured maybe there was something wrong with one of the amps so i changed the ground on just one and the other was still producing the noise through its sub so i changed it too and havent had a problem. id just go through and check all the wiring again and make sure the rcas are still good and that they are plugged in to the proper hole

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ttocs on 04/4/2003 00:03:50
what are the gains on the amp set at?

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audionewb on 04/4/2003 06:57:04
I wanna say under 2.5 v. I think what the deck puts out is 2.7, so I'm not cliipping unless she changed it. I think she is running it at 2 ohms mono tho, which I'm pretty sure the amp can't handle it's a kenwood 800 power series(one of the new ones), but I haven't said anything because she won't listen to me. I'm just trying to get rid of the noise then she can do whatever to the stereo. That may sound mean or whatever, but what's the use saying anything if people don't listen to you.

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Swez on 04/4/2003 09:05:39
Well, If they don't listen, and you informed them of their errors in thinking/application... all you can do.

About the noise, is the HU grounded to the harness or using a body ground here? Stock HU's are fine with Harness grounds. But if an aftermarket system, better to ground the HU to chassis or body ground or ground loops and other noise issues may crop up.

Good luck with your not so wise client,

Swez

FYI: When grounding, always go to a bare metal ground... sand off the paint and run a screw right into the center of the bare metal, then coat with silicone to prevent rust,

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audionewb on 04/4/2003 10:50:48
Yeah I have the stereo grounded to the wire coming from the car, the black wire. I used a chisel on the frame on her car to get bare metal, so I don't think that's the problem either. It sounds like the speakers are moving in and out when I change tracks. If you have any other suggestions let me know. Thanks for the help so far tho.

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Swez on 04/5/2003 21:14:57
Does th install have a remote CD changer? If yes, again.... chech the wiring. Especially the ground. If using remote amps that are also linked to non-factory power wiring, could be a ground loop issue. A ground loop isolator might correct noise issues.

Is a bit complex to explain, but look up the section on Ground loop Isolation at this site and see what you can apply.

Hope this is helpful,

Swez
http://www.eatel.net/~amptech/elecdisc/caraudio.htm

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