Electrical Hum Over Stereo

[driftpigr33]

Hey all

So just bought a r33 skyline it's got a 5 channel amp running the speaker's and a sub. I'm familiar with the hum in different cars but I've seen it caused because the power cables ran to close to the head unit. But with the battery in the skyline in the boot not sure what's causing it.

The amp is mounted near the battery if this could be causing it?

[sydking]

yep, check through my threads, I made one about the same thing.

if i can remmebr, it was the power and RCA cord??, they need to be run almost on each end of the car. Problem fixed.

[reeceo21]

Alternator whine, It is the devil. I have had shocking ones. I will list a few things to help. Work your way down the list and if u get it to stop stop troubleshooting Im sure there is alot more but this is my advice

1. Power cords are seperate from the rcas, speaker wires etc, Also test another amp to see if the problem is amp related (never has been for me)

2.Disconnect the RCA from the amp and plug one of those red and white cables to 3.5 mm headphone jack and smash in a ipod phone etc, if the noise stops its something to do with your rcas

3.Earth your rcas (what im going to say sounds strange but it completely eliminated my alternator whine). On the head unit where the RCAs are obviously there should be atleast two rcas going to it, solder a piece of wire to each part of the rca were it goes into the plug, (should be silver) then connect to earth

4. Last viable suggestion is get a good quality RCA set, Pay a pro

Normally i dont help people like this but fark that noise is horrible and will drive you insane