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2 amps, both buzz

vn_v6

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heres the dealio, i was hooking up a blue LED to the remote wire of my radio, and i accidently touched it on the body of the car, nd it sparked sub made weird noise and i pulled it off, from then on, my alpine 2 channel, and my monoblock, both buzz, somehow, my amps run, without the earth connected, i run 1 power wire, to the mono block, then from the mono to the alpine, i unplug the ground from the mono to the alpine, and the alpine still runs?? how is it earthed still? and the buzzing is 2 different ones, one with the car off, that when i cover the fan hole on the mono, the fan slows down and the buzzing drops pitch so its buzzing from the fan, and another when i start the car, with the revs of the motor, help :(
 

crashnburn

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hey mate, yea i have the same problem, stereo was fine until i put an amp in to run my speakers. since then with accessories its been good, ignition on has been a buzz and when it running it gets interference from the charge rate? as the buzz changes pitch with the revs.

i was told to get a radio interference noise filter so i got one. it says to hook it up to the battery but since i used the original commodore wiring for my stereo i tried the live wire, accessories wire, and the remote wire for my amp with no change, buzz is still there..
 

StoneX

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What head unit?

If you unplug your RCA's I'd say your Alpine amp will turn off.
 

PRAVX II S

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hey mate, yea i have the same problem, stereo was fine until i put an amp in to run my speakers. since then with accessories its been good, ignition on has been a buzz and when it running it gets interference from the charge rate? as the buzz changes pitch with the revs.

i was told to get a radio interference noise filter so i got one. it says to hook it up to the battery but since i used the original commodore wiring for my stereo i tried the live wire, accessories wire, and the remote wire for my amp with no change, buzz is still there..

Hey mate.
Have you run the RCA and the power wire from the battery together if so this is could be the reason why there is hissing or buzzing coming
from your speakers.
RCA and thick power wires should not be ran together.
Because the thick power wire gives of a magnetic field if the RCAs are exposed to this it will make the hissing noise.
Always run the RCAs on one side and the power wire on the other side.
Also check your earth connections on your amps.
 

vn_v6

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i have my rca up the left of the bottom of the doors, and my power on the right, and it started after i touched remote wire, did i blow the monblocks filter for the fan maybe??
 

PRAVX II S

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You got to isolate the problem maybe take the RCAs off from the deck and see if it makes the noise still.
Make sure you got good ground to the body. Run separate grounds from the body to your amps.
And run each amp by it self. and see what happens.
You could of done some damage when shorting the wires.
 

vn_v6

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i dont want it to turn off, im ondering how it runs with no earth, and when i unplug the rca partialy from the mono, so just the bit the goes on the inside of the socket is touching, it stops
 

PRAVX II S

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Dint understand some of the things on the last post.
But maybe the amp is getting its earth from the body.
Have you bolted down the amp on the body of the car. Some electrical components use this type of technique
to earth the components. But I have never used amp like this before.
 

vn_v6

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yes i have, its upsidedown on the metal in the boot, near where the boot hinges are, when i take earth wire out, it buzzes ALOT more
 
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