Can't get rid of noise

[rocknwoo]

Hey guys I have this hum/hiss noise coming out of my components even with the volume is all the way down does anybody have an idea where this is coming from, any help will be appreciated.

[solosickness]

I dunno i have the same thing though...I know it aint right, proly sumthing to do with the ground...but we will see

[newls1]

you have a ground loop issue, or gain set to high

[huh?do-what?]

same problem here. Same noise with car running or not. As long as ignition switch is on, noise is presesnt. 2 different amps, different head units, ground to rcas, ground to battery, frame. With old alternator, after h/o alt. Never could stop it. ???

[rocknwoo]

ground loop or gain mismatched would the noise still be there with the volume all the down

[L8-NiTe]

Usually thats just caused from the ground not being good enough.I have heard that same sound from people whos rcas on the HU itself were jacked up.Try shortening the ground wire as short as possible and cleaning off the metal so it contacts better.Try adding a ground wire to the metal of the HU itself with a small machine screw in one of the little holes,ground that to something metal on the inside of the dash where your wiring harness is at.I bet if you unhook your rcas the sound goes away,so it sounds like something in that area.

Also im not sure about this but i was told when i had that problem before to change my spark plugs,dont ask me why because i do not know.I changed them but it didnt help it was the actual HU causing my problem.

Edited March 21, 2010 by L8-NiTe

[rocknwoo]

All my ground is going strait to the battery neg. I'm going to try grounding my HU and start my way back I quest. Thanks for the repy

[wolfpack]

this forum is awesome, just as i was about to ask a question i found the answer here. my sub makes popping noises and always figured it was my ground but now i know

[gogojjt]

Usually thats just caused from the ground not being good enough.I have heard that same sound from people whos rcas on the HU itself were jacked up.Try shortening the ground wire as short as possible and cleaning off the metal so it contacts better.Try adding a ground wire to the metal of the HU itself with a small machine screw in one of the little holes,ground that to something metal on the inside of the dash where your wiring harness is at.I bet if you unhook your rcas the sound goes away,so it sounds like something in that area.

Also im not sure about this but i was told when i had that problem before to change my spark plugs,dont ask me why because i do not know.I changed them but it didnt help it was the actual HU causing my problem.

i have this same problem now, i would say it's more than likely the headunit has an issue. i had a pioneer deh-6000 hooked up before and my whole system operated perfectly, no noise no problems, i sold it cause i was planning on an upgrade and i stuck this cheap sony in for the time being and the noise and problems started. it could be the rca's like l8-nite said being jacked up on the headunit or just something internal on the headunit like the d/a converter, etc. i usually get the noise on power up and inserting cd's and once the car warms up it's like the cd player warms up...lol...but hey who know's...i would def try replacing the headunit or if you have a buddy that has one you can wire up to test to see if its the problem...you could def try the grounding thing, but im almost sure its just the headunit took a crap........goodluck

[Alexdb7]

i have what seems like alternator whine, tried EVERYTHING i could think of. maybe ill try new spark plugs now.