Electrical / Noise problem Experts Chime in; Seroius help needed.

[rc10mike 10+ year member]

Yeah but the usamps used the regular rca's right? Anm you never had that issue until you switched out the zap 4 channel that used symbilink to the jl 4 channel that doesnt, correct? The way I see it, whether or not the 9.0 is bad in some way, yoiu are having a major issue with the mixing of signal cables.

I agree. Its gotta be something like that. I have all signal cables running down the left side, but while I was troubleshooting, I ran them across the seats as far away from each other as possible, made no difference what so ever.

 

[cx-7heaven 10+ year member]

Why dont you just put the zap 4 channel back in, it is a gorgeous sounding amp?

 

[orangecounty1 10+ year member]

its deff. your HU. ive had my pioneer 880 since they came out, never had a single problem with them until about a month ago, same as you, even with the engine off, i got HORRIBLE nasty loud noise and crackling soudns, etc.

i just had to ground the RCA's on the HU. look on the back of the HU, theres a threaded hole, for a screw. its metric, its either 8 9 or 10mm i think. go get a bolt that fits in it, and use that as your grounding spot. you wont have the noise anymore. only need to ground one set of RCAs too, not all 3 sets.

any questions, PM me

 

[rc10mike 10+ year member]

its deff. your HU. ive had my pioneer 880 since they came out, never had a single problem with them until about a month ago, same as you, even with the engine off, i got HORRIBLE nasty loud noise and crackling soudns, etc.
i just had to ground the RCA's on the HU. look on the back of the HU, theres a threaded hole, for a screw. its metric, its either 8 9 or 10mm i think. go get a bolt that fits in it, and use that as your grounding spot. you wont have the noise anymore. only need to ground one set of RCAs too, not all 3 sets.

any questions, PM me

How can it still be the HU when a brand new one did the exact same thing?

I will try re-re-re-re doing the rca grounds though, Ill try that spot to thanks.

 

[rc10mike 10+ year member]

Why dont you just put the zap 4 channel back in, it is a gorgeous sounding amp?

The JL sounds good enough for me, plus its 3x smaller.

 

[orangecounty1 10+ year member]

How can it still be the HU when a brand new one did the exact same thing?
I will try re-re-re-re doing the rca grounds though, Ill try that spot to thanks.

sorry, i didnt read the thread except your first post, and i didnt even read that completely so i missed that part //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

maybe its something in your wiring thats causing the rca's to start making that noise when u turn it on in ur car. have u tried your 880 in another car?

 

[rc10mike 10+ year member]

Update: Turning down gain does not affect the noise, same loudness.

 

[bigaudiofanatic 10+ year member]

How can it still be the HU when a brand new one did the exact same thing?
I will try re-re-re-re doing the rca grounds though, Ill try that spot to thanks.

Pioneers are know for there poor grounding and noise.//content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

If I were you after trying this if what was said to do about doesn't work I would try another name brand like Alpine.

 

[cx-7heaven 10+ year member]

Update: Turning down gain does not affect the noise, same loudness.

That means its not the h/u. It's coming from the amp/amps. Is there any way to run the 9.0 on straight rca's? I think the symbilink is causing some kind of feedback/ground loop. You are mixing balanced and unbalanced inputs, thats got to have something to do with it

 

[Horsemanwill 10+ year member]

when i said contact zapco i didn't mean for you to send in the 9.0 to be checked but i ment ask about the mixing of rca and symbalik