2 amps, both buzz

[holdenboy]

Your amp is earthing one of two ways, the first is through the RCA cables itself, the second is through the chassis of the amp (only applicable if youve got the amp mounted to a metal section of the car).

As StoneX said, what head-unit?

It buzzes alot more because the RCAs are not earthed.

 

[vn_v6]

heres wat i mean, only the middle prong in the amp, so the outside ring of the rca doesnt touch amp, stops the buzzing

 

[PRAVX II S]

Make sure your earth cable is grounded properly.
Were are you getting your earth from?
Make sure its a good connection.
It also could be the deck. I have had poor quality decks come in at work with the same problem.

 

[vn_v6]

and i ahve a pioneer DEH- 2750

 

[PRAVX II S]

heres wat i mean, only the middle prong in the amp, so the outside ring of the rca doesnt touch amp, stops the buzzing

I think the outside of the rca is ground and the middle is the positive.
On the RCAs.
Does the other one go in fully.
Make sure there is nothing blocking the RCA going in.

 

[holdenboy]

I would say theres your problem. Remove the head-unit and using a small section of wire touch one end to the chassis of the head-unit and the other end to the metal frame that the head-unit screws to.

You can take this advice or not, dosent worry me.

 

[StoneX]

See, if you'd said that when I first asked, I could have told you that you've probably blown the RCA ground fuse inside the head unit. Pioneer's do this quite often as they have a fuse rather than just plain tracks and it causes the exact problem you have.

People will have a poor ground, the amp grounds through the RCA shielding, RCA ground fuse blows, no ground link between amp and head unit to prevent induced noise, you have noise.

 

[vn_v6]

heres some pics of my amps, my deck, my earthing point, and the pic with 1 amp is the amp that runs without cable plugged in

 

[vn_v6]

its messy because i pretty much checked every wire from start to finish

 

[vn_v6]

how do i change this fuse?