Static in speakers

[jeffrey_martin 10+ year member]

My system is finally up and running, but I'm hearing a static noise coming out of the tweeters. My system consists of a Pioneer 4800 headunit, Infinity 7541 Amp, and MTX 6001 Components. From what I can tell, the noise is also coming out of the mids and the rear coaxial's( which are not amped), but its barely noticeable. My power and remote cables are ran on one side of the car while the speaker wires and RCA's are on the other. The noise gets louder as I turn up the volume. I unpluged the RCA's on the amp and the noise was still there. Any ideas as what the problem could be?

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[cshaw 10+ year member]

check you grounds, make sure they are properly grounded. perhaps the most important and over looked part of installing amps.

 

[jeffrey_martin 10+ year member]

check you grounds, make sure they are properly grounded. perhaps the most important and over looked part of installing amps.

I don't think its the ground because I had to redo that earlier and I know thats good. Besides, my rear speakers are making the noise too, and there not amped, its just not nearly as noticeable in them. I believe the noise was present before I even installed my amp and comps, but now that the tweeters are closer to my ears and are receiving more power, its much more easy to notice.

 

[cshaw 10+ year member]

what about the ground for the hu? how did you run wires through the engine?

 

[jeffrey_martin 10+ year member]

what about the ground for the hu? how did you run wires through the engine?

Headunit ground? I'm not even sure. Its been a couple years since I installed it and I don't even remember what I did with that. However, how would that cause static in my amped speakers?

 

[DarkFox 10+ year member]

If the noise is still there when you unplug the rcas from the amp, you have just eliminated your Radio / RCAs. Onlything left hooked up is the speaker wire from amps to speakers, grounds, and dirty vehicle power

 

[jeffrey_martin 10+ year member]

If the noise is still there when you unplug the rcas from the amp, you have just eliminated your Radio / RCAs. Onlything left hooked up is the speaker wire from amps to speakers, grounds, and dirty vehicle power

I unplugged the RCA's and the noise was still there. So how do I find out if the speaker wire or the grounds are the problem. Also, how would I compensate for dirty vehicle power?

 

[DarkFox 10+ year member]

The Big three upgrade can calm alot of noise. Adding a cap may help. you can unhook the speaker wires from your amp, take a DMM and go from each lead to the chassis. If you read anything but infinity, that lead has grounded out somewhere and is making a ground loop.

 

[jeffrey_martin 10+ year member]

The Big three upgrade can calm alot of noise. Adding a cap may help. you can unhook the speaker wires from your amp, take a DMM and go from each lead to the chassis. If you read anything but infinity, that lead has grounded out somewhere and is making a ground loop.

What exactly does a cap do? Ive heard people say that caps are a waste of money. Also, if I do have a ground loop problem, how would I fix it?

 

[jeffrey_martin 10+ year member]

Is it possible that the noise is coming from the amp itself? I turned off the front speakers at the headunit, and even unplugged the RCA's, but the noise was still there. The only way the speakers were connected was by the speaker wire which is connected to the amp. So the only thing I can think of is that the amp itself is making the noise and sending it over the speaker wire to the speakers. Could this be possible?