Hi All,
Spent all day installing a system in my R56 cooper D today. All was going well until I test drove the vehicle and noticed when idling at lights with my foot on the brake, I get a buzzing noise from the rear 6x9's.
The setup consisted of a Kenwood 1400w amp, kenwood 6x9s and Hertz components. REQ-5 to convert speaker level to RCA with restored bass frequency
I have wired up amps in previous cars but just wondered if anyone has come across this issue.
From reading on other car forums, it seems to be an earthing issue. The query I have is I have fitted the amp under the passenger seat and have run 2x 4awg live and earth straight to the battery. Can anyone see an issue with running an earth cable direct to the battery? will that be enough distance to induce noise? (approx 2 metres).
Some forums advise the earth should be as short as possible and earthed to the chassis and others say to the battery is fine.
I have routed the RCA phono cables approx 30cms running parallel to the live and earth but obviously come close to each other when being routed into the amp.
I was pondering getting higher quality RCA cables as they are cheapy ones I had lying around. Just stumped as I cant see an earth contact issue when I am going straight to the negative terminal on the battery, so other than the length of the negative cable, or the use of cheap RCA's I am a bit stumped what to do next.
Just for info, even if the radio is off the buzzing noise is still emitted from the rear speakers when the brake pedal is depressed.
Any advice on what it could be or checks I could carry out would be greatly appreciated.
Spent all day installing a system in my R56 cooper D today. All was going well until I test drove the vehicle and noticed when idling at lights with my foot on the brake, I get a buzzing noise from the rear 6x9's.
The setup consisted of a Kenwood 1400w amp, kenwood 6x9s and Hertz components. REQ-5 to convert speaker level to RCA with restored bass frequency
I have wired up amps in previous cars but just wondered if anyone has come across this issue.
From reading on other car forums, it seems to be an earthing issue. The query I have is I have fitted the amp under the passenger seat and have run 2x 4awg live and earth straight to the battery. Can anyone see an issue with running an earth cable direct to the battery? will that be enough distance to induce noise? (approx 2 metres).
Some forums advise the earth should be as short as possible and earthed to the chassis and others say to the battery is fine.
I have routed the RCA phono cables approx 30cms running parallel to the live and earth but obviously come close to each other when being routed into the amp.
I was pondering getting higher quality RCA cables as they are cheapy ones I had lying around. Just stumped as I cant see an earth contact issue when I am going straight to the negative terminal on the battery, so other than the length of the negative cable, or the use of cheap RCA's I am a bit stumped what to do next.
Just for info, even if the radio is off the buzzing noise is still emitted from the rear speakers when the brake pedal is depressed.
Any advice on what it could be or checks I could carry out would be greatly appreciated.