Car Audio Central - Ultimate Car Audio Forum and Community

and your still getting noise? do the cap thing like i suggested! it will hopefully shunt the noise... get your self a cheap high quality cap from alumapro or stinger and put that just behind the alt it should take care of it. rcas are rcas there is very little quality diffrence. Since finding that ...

EDIT: The problem still persists. I have found a ground wire off the headunit that when disconnected, makes the noise louder, yet has no affect on the headunit.


Other than that, I'm more confused than ever.

Ok, I did some troubleshooting by using crutchfields advice, and it seems to be coming from my RCA cables. One set is very good, and the other set is decent. Even the very good cables (twisted $27) is picking up noise. I also have two ground loop isolators hooked in line to the amp, and the power an...

How is the Hu grounded? Is it grounded through the wiring harness? If it is, ground it to bare metal instead. Some headunits introduce a lot of noise into a system. I have found that with A LOT of Pioneer decks, they are incredibly noisy decks. But i also agree with the power wire/RCA thing. No gua...

I think that's the next step. Tonight I tried makeing a shorter ground cable, and there was no change. As I unplug the RCA cables, the noise goes away, which leads me to believe the power wire and RCA cables are interfering. When the relays for the highbeams and turn signals actuate, I can hear it t...

I recently installed an Alpine 40x4 amp. The amp is grounded to the inner rocker panel under the back seat, which is about a foot from where the amp is mounted. I'm getting alternator noise/whine ( the sound changes with engine speed) from all speakers. I tried messing with grounds with no luck. I a...

I got the Alpine MRP-F240 40 x 4. Not too long ago, I was using the 45 amp alternator to power a 100w RMS amp for a 12in sub. I didn't have problems because I wired a switch into the remote turn on lead. At peak power, will the 40x4 amp use more power than a mono 100w amp? I'm not too worried becaus...

I'm pretty sure I'm getting the Alpine MRP-F240, 40 X 4. I won't be getting the speakers until next year. Final thoughts on the Alpine?

hmm i missed this thread yesterday and today i dont know how i did that oh well. i would deffinlyt think about some kicks or external door pods which can be pretty easy. since you have an older car im asumming that you have a flat door panel with vinyl over some light board that is thin am i correc...

I was also considering this Pioneer amp, but forgot about it becasue an Alpine could be had for not much more.

I think its the closest thing to the gm-4000f (no longer made?)

http://www.circuitcity.com/ssm/Pioneer- ... tDetail.do