Car Audio Forumz - The #1 Car Audio Forum - Noise through speakers related to engine speed?

Car Audio Forumz - The #1 Car Audio Forum (https://www.caraudioforumz.com/)

- General Discussion (https://www.caraudioforumz.com/general-discussion-10/)

- - Noise through speakers related to engine speed? (https://www.caraudioforumz.com/general-discussion-10/noise-through-speakers-related-engine-speed-262574/)

Alpine H/U ?
I bet it is...

Nope It's a JVC arsenal deck

Quote:

Originally Posted by masterelyt (Post 665166)

So I talked to the head guy at the audio shop, (he wasn't there when I went before) and he said that old amps like this tend to be sensitive to a voltage difference between the amp and the deck. So I changed the deck ground to the same spot that the amp is grounded to.

No luck!

Kind of frustrating because running wire to the back of the vehicle isn't the easiest thing in the world but I guess the factory ground on the deck was probably high resistance anyways.

I'm thrown for a loop here... not sure what to try next... might actually try and get the Hertz HE4 sometime in the near future to replace the Pioneer because I have a sneaking suspicion that the amp is the culprit...

I have never had any luck relocating the deck ground to the amp ground. Really, adding 12-15feet of 16ga wire has its own resistance so they still aren't the same potential.

I would not say the Pioneer amp is the 'culprit' but would support that maybe the Pioneer amp does not mate well with the JVC deck. This happens sometimes whether it's the output impedence of the deck and the input impedence of the amp being too close or whatever reason. For example, I raise an eyebrow whenever I get a Pioneer deck and an MTX amp in the bay. It's always a crapshoot if there is going to be noise.

http://search.digikey.com/us/en/cat/...8554?k=ferrite

also another tip don't wrap your cable around steel, it can become an inductor and cause even more noise, but it is strange the shielded cables didn't help, not sure if you are willing to attempt to strip some of the insulation and attach a 3rd wire to the shielding and ground it to the amp and HU

Thanks for the replies guys, you've been a lot of help. I think I'm just going to have to live with the noise.

And Athanatos, I'd have no problem grounding the shielding of the RCA cable but it's already got a ground wire attached to the shield.

I've looked at this from so many angles and nothing has worked, I've talked to my electrical professor and even he has said the same things that all of you have told me.

Thanks a lot for the help, at least the noise is tolerable now. Hopefully I can get that new amp some time down the road and see if that makes a difference!