Any help is appreciated. I have a Panasonic MXE-CQ8400U HU and a Soundstorm 4 channel amp running the 4x6's and 6x9's. Now whenever I lower the volume to 0 I hear whining in the speakers, and it gets louder whenever I give it gas. I checked the ground on the amp and it's fine.(even sanded the metal some just to make sure. What could be causing this?
Your soundstorm 4 channel amp. Cheap amps tend to have problems like that.
Yeah you might be right, It worked beautifully when I bought it new. That and my sub wasn't making noise which is hooked up to a seperate amp. Any other suggestions?
check your RCA connections, engine noise is cause by many things. Do you have shielded rca wires? How close are they to the power/ground wires in the car? Extra batteries? Caps? Check all your connections...or its just a bunk amp!
Sounds like plug wires or alternator whine.
plug wires as in spark plug wires? I'm gonna hookup the speakers to the HU and see if the amp was the problem.
95Vet wrote:plug wires as in spark plug wires? I'm gonna hookup the speakers to the HU and see if the amp was the problem.
Yes, if you have thin wire insulation some of its can come from electrical interferance.
your either grounding out some where, or your RCA is near a power wire, like he one for your amp.
wires will conduct electromagnetically aswell, so if you dont have high end wires you can get the "flux" conducting onto your RCA wires. run them down seperate sides of the cars.
see whats grounding out. hook up a different source to it. get an MP3 or a portable CD player and run the amp of that source, see if the sound goes away. if it does, your HU is grounding out. if not, its somewhere else.
if you have it mounted to something metal, even thrugh the carpet, it can ground out. if you just dont want to hear it anymore, turn your gains down, its not a volume control.
Injection is nice but id rather be BLOWN!
It could be, Altenator, bad ground, cheap or broken/old RCAs, or you have the gains to high.
you snooze you lose!
keep working, millions on welfare depend on you!
Does it whine when the system is on and the engine is off? That could eliminate a few sources (spark plugs, for example) of the noise.
No noise when engine is off only when on. thanks for all the suggestions.
a real easy way to see if its the amp or something between the deck and rcas is just unplug the rcas at the amp and see if there is noise still. if it goes away, plug the rcas back in and unplug them behind the deck and see if its still there. just use process of elimination to determine what the problem is.
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