Buzzing coming from speakers...tried everything I can think of.

[Nikegman]

Hey guys,

I am new to the site and joined because I am having a problem with my stereo system in my car. It is a Wrangler if that means anything. I have had the system installed now for about a year and a half and the problem just arose about a month or two ago. Almost to the point where I can stand driving the car because of the noise.

I am running an Alpine Cda-9885 HU with a profile 4 channel amp running some Polk Audio speakers.

System sounds great but I just started getting a buzzing noise that is pretty loud that varies with engine speed. I looked into it and thought I had a ground loop but nothing has seemed to fix it. If I turn my HU on and off a few times sometimes it won't make the sound. It makes it about 90% of the time. Sometimes it goes away while driving but then comes back.

What I have done so far:

-Changed the grounding point on the heaunit three times

-Changed the grounding point on the amp

-Tried grounding the RCA's (read somewhere that might work)

-Bought new RCA's

-Bought a new amp (thought it was the problem but wasn't

If I unplug the RCA's the noise goes away so it must be coming from the headunit correct? I am lost guys so please help me out.

Thanks

Here is a picture of the car giving me hell...

Click to read more...

 

[SPLaudio 5,000+ posts]

might be a piched speaker wire grounding out. unhook at the amp each channel at a time to find the bad one...

 

[Nikegman]

So just go through and unhook the speaker wires to each speaker one at a time?

thanks for the help...I really appreciate it.

 

[SPLaudio 5,000+ posts]

unhook at the amp not at the speaker. unhook turn on then play,turn off, reconnect then try a different channel.