bad engine noise

[rival904 10+ year member]

Ok, Let me explain this as best as I can.

I have 2 4 channels, both mounted to my amp rack, I have them on 2 distro blocks for power and ground(1/0in and 2 4ga out)

I have engine whine pretty bad, and have tried almost every trick in the book.

First off, I am not running a headunit right now, just iPod into the EQ.

The amps are grounded roughly 3ft directly to my 2nd battery.

The EQ is grounded the to chassis

If I unplug the RCA's out of the amps, the engine noise stops

I have tried a new set of RCA's, notta

Power and RCA's are ran on the opposite sides of the truck

I purchased a Stinger ground loop isolator from Darvex, still there and noticeable.

Now, in all reality, Im sure the engine noise isnt that bad, but when you have 8 pro audio style 6.5s, everything's loud.

I can drown it out by cranking it up really high, but In my mind its still there.

I also have a train horn installed, and when the compressor kicks on, I can hear that through my speakers also(compressor is grounded to the frame of the truck.)

Any other ideas?

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[mrezstreet 10+ year member]

Upgrade ground at bat under hood

 

[mrezstreet 10+ year member]

And power n ground from alt to bat 1...you have ground running from bat 1 to bat2?

 

[fbi90909 5,000+ posts]

Burn you car down. That is the only remedy

 

[rival904 10+ year member]

Big 3 done in 1/0, also have 10 runs of 1/0 wire, 5 pos and 5 neg

 

[Horsemanwill 10+ year member]

Ok, Let me explain this as best as I can.
I have 2 4 channels, both mounted to my amp rack, I have them on 2 distro blocks for power and ground(1/0in and 2 4ga out)

I have engine whine pretty bad, and have tried almost every trick in the book.

First off, I am not running a headunit right now, just iPod into the EQ.

The amps are grounded roughly 3ft directly to my 2nd battery.

The EQ is grounded the to chassis

If I unplug the RCA's out of the amps, the engine noise stops

I have tried a new set of RCA's, notta

Power and RCA's are ran on the opposite sides of the truck

I purchased a Stinger ground loop isolator from Darvex, still there and noticeable.

Now, in all reality, Im sure the engine noise isnt that bad, but when you have 8 pro audio style 6.5s, everything's loud.

I can drown it out by cranking it up really high, but In my mind its still there.

I also have a train horn installed, and when the compressor kicks on, I can hear that through my speakers also(compressor is grounded to the frame of the truck.)

Any other ideas?

try a different signal into the eq. if noise is still there then

run just the ipod into the amps is the noise still there? if not then run some rcas outa the carpet from eq to amps and see if noise is there. eliminate one item at a time till u find what's causing the noise.