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General => Car audio => Topic started by: lil rich on 23 July 2010, 17:50

Title: amp problems
Post by: lil rich on 23 July 2010, 17:50

Wired up my amp to my 6x9's and head unit now when i turn the engine on i have a nasty whine noise comin out from 6x9's.

seperated the power from the rem lead and made sure i have a perfect earth! any other ideas????

cheers

Title: Re: amp problems
Post by: DUBBEDMK3 on 14 August 2010, 19:00

you want to get on ebay mate and get a ground loop isolator its the balls had the same problem in my mk3 for a while and it fixed it cheap as chips too

Title: Re: amp problems
Post by: troublestarter on 15 August 2010, 08:23

firstly have you run your rca cable down the same side of the car as the amp power cable
if yes the that will more than likely be the problem signal and power cables should ideally be run down opposite sides of the car
also where is your amp earth mounted
this needs to be a good solid and bare metal point
also it could even be the gain level on the amp is too high!!!!

Title: Re: amp problems
Post by: mattyass on 16 August 2010, 10:57

Thought i would jump in on this thread as i have been experiencing the same problem. Installed my amp into my mk3 yesterday and i am now getting engine sounds/whine through the speakers. Made sure rca and power cables ran down opposite sides. Used a seatbelt bolt above the rear wheel well as an earth and made sure the gain level was right down but still got the problem. Dos anyone have any more advice on this???

Title: Re: amp problems
Post by: troublestarter on 16 August 2010, 11:44

matty try plugging in another rca

Title: Re: amp problems
Post by: mattyass on 16 August 2010, 11:56

You mean a whole new cable? The one i used was brand new. There are two sets of connections in the back of the Hu though. Could swap those?

Title: Re: amp problems
Post by: dragonfly on 16 August 2010, 12:55

Try another cleaner earth point (no paint).

Title: Re: amp problems
Post by: mattyass on 16 August 2010, 14:01

May try a different earth tonight.The one im using seems ok and i did sand back the area to bare metal. Still may be worth trying somewhere else.

Title: Re: amp problems
Post by: DUBBEDMK3 on 18 August 2010, 21:48

im telling you lol ground loop isolator :huh:

Title: Re: amp problems
Post by: DubSociety on 22 August 2010, 11:01

Don't mean to high jack but I get a headunit turn on thump/pop, and when I change track subwoofer pop. Never got this and I had my setup for over 3 years. It started happening after I disconnected my sub to access my fuel sender.

Title: Re: amp problems
Post by: Tazzy on 31 August 2010, 17:20

check all terminals, check remote cable, check you havnt ground onto paint and check youve got it on the right freq (hi or low?), cant really think of anything else...

Title: Re: amp problems
Post by: polo6n222 on 08 September 2010, 11:29

could be the headunit i had this prob before and it was the headunit

Title: Re: amp problems
Post by: mattyass on 08 September 2010, 19:40

Hello peeps. Checked evrything, re-earthed, re cabled etc and still same problem so go a ground loop isolator. Can still here a quiet buzzing sound but its 10 times better so im happy. Cheers guys