Gah, engine noise is killing me.

[crx4luke 10+ year member]

Yeah, stop by on a slow day and I'll have a look.

Its just hard to believe that its the HU if the same problem was there with two different ones. Now the crossover....maybe.

 

[spoonraker 10+ year member]

what the hell is wrong with you man! loldid you read anything jman posted BEFORE you posted? i know your tryng to help but for the LOVE of god read what is wrong and what he has done before you open up your mouth. EVERYTHING you've asked he answered in the 1st post!! HE SAID I HAVE A CLARION HU and you ask. .. do you have a pioneer HU? what cracks me up the most is that you showed a picture that he used in a sticky HE made in the wiring section of this forum. . i think he's tried that if he made a STICKY on it. . . !

Yes Jman, reading FTMFW

jesus quit being such an *******

I guess I missed where he said he had a Clarion HU. I just read the post and immediately hit search and typed in "pioneer rca ground" and copied the image location and posted it. I don't know about you, but when I'm responding to a thread, I usually don't look at the poster's name just to make sure any other posts I might reference were created by that person. And he didn't already try everything I posted, I guess I overlooked the RCA grounding, but nothing else I posted he had done, or at least didn't say.

He says he tried regrounding the HU, I said try using a different power wire to. He said his next step was to use the ignition power wire, and I said try your own power straight from the battery. He said he used an inline noise supressor on the power wire, I suggested he used a noise isolator on the RCAs at both ends. I never said that would fix the problem, I said it would more accurately let him know where it was coming from. He never said he ran RCAs outside the car, he said he ran them "where they don't get anywhere near power wires" for all I know that could mean he just switched the wire to the other side.

Cliff notes : quit being a dick and snapping at somebody who is trying to help.

 

[jmanpc 5,000+ posts]

Yeah, stop by on a slow day and I'll have a look.
Its just hard to believe that its the HU if the same problem was there with two different ones. Now the crossover....maybe.

Can't be the crossover if I don't get noise before or after it... if I so much as touch the RCA's to the head unit, it'll cause noise. Zero noise when it's disconnected.

I'll surely come and see you. Let you get a listen.... it actually sounds pretty darn good, and gets loud //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif 144.7 on the TL before the Big 3...

 

[crx4luke 10+ year member]

One other thing. You never mentioned the ground or the wires on the battery. I'm pretty sure you upgraded those, but are the connections on the battery loose or corroded or is the spot where the battery is grounded loose? Just a last idea before i head out.

 

[jmanpc 5,000+ posts]

Yeah, just did the big 3 the other day, and all battery grounds are solid.

 

[spoonraker 10+ year member]

Is the noise coming from the RCAs leading to the sub, or the speaker amp? Or are they one in the same, or do you even amp your speakers? Somebody else said it might be your crossover, I guess you could disconnect the crossover and bypass it, just don't hook up the tweeter or something and keep the volume down so you don't damage anything.

 

[jmanpc 5,000+ posts]

I have two pairs of RCA's coming out of the HU: one that splits and goes to the crossover via the equalizer, and one that goes directly to the subwoofer. Subwoofer doesn't get any noise because they're filtered out via the LPF. Again, all noise goes away if unplugged from the hu.

 

[crx4luke 10+ year member]

I have two pairs of RCA's coming out of the HU: one that splits and goes to the crossover via the equalizer, and one that goes directly to the subwoofer. Subwoofer doesn't get any noise because they're filtered out via the LPF. Again, all noise goes away if unplugged from the hu.

Just means that no signal is being sent through the rcas

 

[jmanpc 5,000+ posts]

Forgot to mention: (this is big)

The KQ9 has a single input and 3 outputs. If I go and hook my MP3 player directly to the equalizer via a headphone-to-RCA cable, there's no noise.

 

[crx4luke 10+ year member]

I had something similar to that once. Would go away with the ipod, but was there with the radio. Ended up being a bad ground on the 4 channel amp. It was redone, and the noise went away.

 

[jmanpc 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.

 

[WantedIsHere]

i would personally tend to think its an amp problem... your testing doesnt conclude anything... Of course when you disconnect from the head unit there will be no noise... there is no signal to create a noise... I would bet money that its an issue with the amp or xover. Another thing to look at would be your spark plug wires...

 

[MikeyB 5,000+ posts]

I read most of what you already said but it seems like you have tried everything. The other thing I would try is just taking your hu out and running a couple wires right from the battery and just hang them in the window and hook the hu up and see if you still have the wine. If you dont then just run new power and ground to the hu. Also, make sure you have clean wiring behind your hu, no loose wires or unused speaker wires lying around.

 

[WantedIsHere]

what type of vehicle is this? frame or unibody ?

 

[jmanpc 5,000+ posts]

i would personally tend to think its an amp problem... your testing doesnt conclude anything... Of course when you disconnect from the head unit there will be no noise... there is no signal to create a noise... I would bet money that its an issue with the amp or xover. Another thing to look at would be your spark plug wires...

Again, I bypassed the head unit and fed the amps a signal via my MP3 player with no noise.