Alt whine problem (legitimate)

[mattmcss 10+ year member]

I did some searching,

- Grounds are all sanded away nicely and bolted good to bare metal.

- I AM not running a HU, these are high level inputs, theres a ground wire that came with these and they are grounded too ( away from amp's ground )

I've tried a few different grounding places, all does the same thing.

HELP ! My car is in pieces and I have class soon.....

Any help , greatly appreciated as always

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[dkguitarist 5,000+ posts]

reground the amps. or make a "common" ground.

 

[mattmcss 10+ year member]

reground the amps. or make a "common" ground.

For everything ? both amps and the high level input grounds?

 

[pwnt by pat 10+ year member]

Everything. Ground all your amps and hu to it first. If that doesn't work, try running a wire from your neg terminal back to the same location, also.

 

[mattmcss 10+ year member]

alrite no dice, I grounded everything to the best ground I had, still whines.

And I'm still running a factory deck.

 

[dkguitarist 5,000+ posts]

try running an isolated ground from the amp/s to the neg battery post. and try ground the hu to the chassis instead of the stock hu ground wire.

 

[mattmcss 10+ year member]

Alrite the dash is coming out first.

Be back shortly with results

 

[mattmcss 10+ year member]

okay, re grounded the HU, still whine.

Last resort running from battery all the way back to the amps ?

 

[dkguitarist 5,000+ posts]

okay, re grounded the HU, still whine.
Last resort running from battery all the way back to the amps ?

yes. try it.

 

[mattmcss 10+ year member]

yes. try it.

I'm gona have to order up the wire for that, don't have enough laying around =(

 

[dkguitarist 5,000+ posts]

I'm gona have to order up the wire for that, don't have enough laying around =(

gotta try every option you have available. if not, try shielded rcas.

 

[mattmcss 10+ year member]

gotta try every option you have available. if not, try shielded rcas.

no rca's here, they are the speaker level inputs.

 

[dkguitarist 5,000+ posts]

no rca's here, they are the speaker level inputs.

my bad. not payin attention. are those the same as LOCs?

 

[mattmcss 10+ year member]

my bad. not payin attention. are those the same as LOCs?

Yup, just take the signal from the stock harness

 

[dkguitarist 5,000+ posts]

Yup, just take the signal from the stock harness

turn the dials on the wires all the way up. i read somewhere that helps too i think.