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Alternator Noise in mids/highs


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Posted

I think I have checked almost everything and I'm at my wits end. I have an annoying wine coming from my door speakers. I have checked and rechecked all the ground, upgraded the RCA, re tuned and nothing makes it stop. Its only there when the truck is running and get higher with more rpms. Goes away when RCA is unplugged (tested at deck and amp same results). System rundown: 1993 Chevy 1500, Pioneer Deck, RF Prime 250x4 w/ RF Prime 6.5 Components, also 2 RF Prime 250x1's and 2 RF Prime R2-D4 10'S. Battery to fuse block is 1/0 cca, fuse block to amps is 4g cca. Same sizes on grounds. Ground block is grounded to seat bolt. Big 3 has been done and power and signal are as far apart as possible. Truck had no functioning radio when I got it. Installed the deck found 1 working speaker other 3 were dead, and 4 went out sort time later. This noise is driving me nuts, I can't listen at low volume due to the noise. Subs have no issues that I can hear only the components.

3bc3a7ec-d90c-40a7-928f-eef8c019b42b_zpswww.facebook.com/EKCASA

System:

All Rockford Fosgate

Front: 2 Pair Prime 6.5's and 1 pair Prime 5.25 Components

Rear: 1 Pair Prime 6.5 3 Ways

Subs: 4 Prime R2D2-12's

Amps:

Front: Prime R250X4

Subs: 2 Prime 500X1d's

HU: JVC KD-AR959BS

2 Optima Yellow Tops

Singer 230A H/O Alt.

Lots of KnuKonceptz 1/0 and accessories

105 Sq ft Kno Knoise deadener

Posted

same issue I have. I will let you know when i figure out how to reduce or remove completely.

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Posted

It may be your deck...

A few months ago someone tried to steal my deck and since then ive had that same issue. I smack the deck and it stops but then I hit the right bump and it starts again.

I need a new deck anyways.

Thats cool. Im way too old to be upset by shit like that. Your name is winston. Your own parents hated you even before you were born.

My penis is bigger than your penis

I'm far from loud and my roof/headliner flaps around like Adam's ass on a windy day. I think it depends more on the structure of the vehicle.

Posted

How far are your crossovers from power/ground wire? If I had wine pouring out of my car I'd look at that as a gold mine.

if nothing changes, nothing changes

You don't know what you don't know, till you don't know

Posted

It may be your deck...

A few months ago someone tried to steal my deck and since then ive had that same issue. I smack the deck and it stops but then I hit the right bump and it starts again.

I need a new deck anyways.

My deck is pretty old. This is the 3rd vehicle I have had it in. I'm hoping I will get a new one for father's day.

3bc3a7ec-d90c-40a7-928f-eef8c019b42b_zpswww.facebook.com/EKCASA

System:

All Rockford Fosgate

Front: 2 Pair Prime 6.5's and 1 pair Prime 5.25 Components

Rear: 1 Pair Prime 6.5 3 Ways

Subs: 4 Prime R2D2-12's

Amps:

Front: Prime R250X4

Subs: 2 Prime 500X1d's

HU: JVC KD-AR959BS

2 Optima Yellow Tops

Singer 230A H/O Alt.

Lots of KnuKonceptz 1/0 and accessories

105 Sq ft Kno Knoise deadener

Posted

I have same issue. Not as bad but it's there.

Hard to pinpoint. You could try grounding your rca's at the HU

I have never tried that. Not sure how to go about it.

3bc3a7ec-d90c-40a7-928f-eef8c019b42b_zpswww.facebook.com/EKCASA

System:

All Rockford Fosgate

Front: 2 Pair Prime 6.5's and 1 pair Prime 5.25 Components

Rear: 1 Pair Prime 6.5 3 Ways

Subs: 4 Prime R2D2-12's

Amps:

Front: Prime R250X4

Subs: 2 Prime 500X1d's

HU: JVC KD-AR959BS

2 Optima Yellow Tops

Singer 230A H/O Alt.

Lots of KnuKonceptz 1/0 and accessories

105 Sq ft Kno Knoise deadener

Posted

How far are your crossovers from power/ground wire? If I had wine pouring out of my car I'd look at that as a gold mine.

crossovers are built into the components so not an issue. As far a "wine" idk how auto correct decides to change words but its the most annoying feature on smartphones.

ps I prefer beer.

3bc3a7ec-d90c-40a7-928f-eef8c019b42b_zpswww.facebook.com/EKCASA

System:

All Rockford Fosgate

Front: 2 Pair Prime 6.5's and 1 pair Prime 5.25 Components

Rear: 1 Pair Prime 6.5 3 Ways

Subs: 4 Prime R2D2-12's

Amps:

Front: Prime R250X4

Subs: 2 Prime 500X1d's

HU: JVC KD-AR959BS

2 Optima Yellow Tops

Singer 230A H/O Alt.

Lots of KnuKonceptz 1/0 and accessories

105 Sq ft Kno Knoise deadener

Posted

When I had noise I fixed it by grounding the head unit to the same ground as the amps. That fixed it for me.

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