Gah, engine noise is killing me.

[energizedsbs 10+ year member]

when you did the big 3 and put your pics up when you grounded them to the frame i made a comment about you not scraping the paint off... i would try that if you didnt already... have you taking the deck by the amps and power it off your amps and use a short 3 ft rca and see if the noise goes away..

 

[JohnBlayz142 10+ year member]

Honestly....buy a new car, I've never had those problems. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[jmanpc 5,000+ posts]

when you did the big 3 and put your pics up when you grounded them to the frame i made a comment about you not scraping the paint off... i would try that if you didnt already... have you taking the deck by the amps and power it off your amps and use a short 3 ft rca and see if the noise goes away..

It had the problem before I did the big 3

 

[jmanpc 5,000+ posts]

Heres a diagram of my power wires and RCA's

And yes, I see tha tthe wires going to the X1.800.4 go aross several power wires, so i rerouted them against the back wall of the stow n go where they don't cross power wires.

 

[Imtjnotu 5,000+ posts]

never heard of a problem like this before

 

[JohnBlayz142 10+ year member]

Did you ever consider the fact that it could have something to do with your vehicles' electrical system?

Just remember not to rule that out....

 

[jmanpc 5,000+ posts]

Did you ever consider the fact that it could have something to do with your vehicles' electrical system?
Just remember not to rule that out....

That's what I've thought all along.... noise from my electrical system is radiating into my headunit, causing noise.

 

[jmanpc 5,000+ posts]

Okay, since I keep having to restate myself, I'm just going to restart the thread:

I'm getting satanic amounts of engine noise through my stereo. It sounds like a constant droning with beeping, and then an AM Radio-crackling sound on top of it when the engine fan is on.

Hear the sound in this video:



I have tried:

-Regrounding the headunit to a steel beam in the dash

-Switching all RCA's to good-quality shielded RCA's

-Rerouted all RCA's to not cross any power lines

-Tried running power and ground directly to the battery

-Taken the radio out of the dash cavity, away from the electronics in the dash

-Traced the noise back up through the chain, all the way up to the head unit (I have unplugged every RCA up to the radio to find the origin of the noise)

-Done the big 3, and the battery grouds are overly solid if anything

-Switched head units completely

-Ran RCA's straight from HU to the amp

-Bypassed the head unit and plugged an MP3 player directly into the equalizer. When I do that, there is no noise

Through all of this, I have come to the determination that:

-The noise is not originating in the amps for the billionth time

-The noise is not originating in the crossover

-The noise is not originating from the equalizer

-The noise is originating from the head unit

-The head unit is having noise radiating into it from my van's electrical system

Now what I'm trying to figure out is how to keep the engine noise from reaching my head unit. One suggestion so far is a "Pi filter". I don't know what the heck that is, or what it does, but that's been one suggestion.

Anyone else?

 

[PoisonXA 10+ year member]

//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif look i had the same problem when i had a xover on my system i broke my head figureing out wtf it was till finally i figured out it was the crossover. , i did the same thing as u disconnect all the rcas from everywhere to see when it goes away and even when i disconnect the one in the crossover it would go away but the crossover was the one who AMPLIFIED the noise from the engine, and i did not know that till i ran a straight wire bypassing everything and i just went from the hu to the amp and i figured out the issue try that it might just be the problem and usually that happens when ur electrical is shitty and theres a small case of engine wine barely noticable by the ear but to the xover it picks it up and amplifies it more than ur amplifiers so try that and let me know.,

One LAst Thing IF IT IS UR ELECTRICAL SENDING SHIT TO UR HU BUY THE THICKEST DYNO MAT AND RAP UR HU AROUND WITH IT AND GROUND UR RCAS TO THE Chassis that worked on one of my other cars i know it sounds ghetto but it works.. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[DBfan187 5,000+ posts]

I've got my amps grounded on a seat bolt with the paint stripped that goes to the frame. My tweeters are on a seperate amp, and a seperate grounding spot and get noise as well.

Not really a great place to ground. If you have to, I'd ground straight to the battery. It cured all of my problems. Just run another line of 1/0 back there.

 

[jmanpc 5,000+ posts]

I just ruled out the EQ and xover...

I just went and ran an RCA straight from the hu to the amp. Still buttloads of noise...

 

[ultimate157 5,000+ posts]

Well, you clearly have exhausted all of your audio equipment options. Now you have to start looking into the actual electrical system of your car.

Is the alternator stock?

 

[jmanpc 5,000+ posts]

yes, it's a stock alt. 160A ftw.

 

[jmanpc 5,000+ posts]

anyone else?

 

[bryce-man 10+ year member]

HOLY CRAP

stock 160

.. mins only a 95 haha

i guess mini vans ar ehte best vehicles for audio

w/ those secret compartments you used too haha

(if it wasnt you.. oh well now you have a new idea haha)