Hey i turned my car on today and there is this schreeching sound coming from the speakers. The speakers still play but i am hearing this horrible screech coming from the 4 speakers. Today i found my found was fading in and out and now this screech noise is here!

I have a kicker 2 channel amp and component speakers in the front deck and coaxials in the back...Both aftermarket type s speaks thanks !

 

does it fluctuate with engine rpm? i'm guessing its a bad ground somewhere.

 

sounds like bad grounds, i would hear a clicking noise when i moved my seats [electronic] in the speakers.

 

If it's not fluctuating with the engine RPMs like Fosgate Fan asked, you might also want to check your RCA cords and the RCA connections to the HU and the amp. This might also explain why the sound is fading in and out.

Tony

 

hey guys it is in tune with the RPM when i speed up the noise gets louder. Does this mean my ground wire needs to be changed?

 

hey checked my ground wire in the amp too its fine but the noise is still coming

 

where is the amp grounded to?

 

underneath the carpet above the tire drilled right into that metal

 

Is that area painted? If so, sand it down.

 

there was not this screeching sound before though why all of a sudden?

 

you should check the connections behind your HU. That might make sense as to why it just all of sudden happen, if an RCA came loose.

 

^^^ we're working on that. go buy an atlas already.

 

sub needs power doesn't it?

 

Update

Check grounds sanded them down
Checked h/u grounds
Tried the Alternator Filter from radio shack
Check all wiring

Im still getting the noise !!!

 

I think I would try moving the ground to a different place. Also, when you ran your wiring, did you run your speaker wires or rca plugs next to your battery wire to your amp? If so, this can cause noise. I would bet its the ground though, I'd try moving it to a different place first. One more thing, if you have power coming from the fuse panel, might want to try a different fuse.

 

hey update again lol i move teh ground wire its still doing it . the jbl amp works perfectly fine that i run the subs on only the kicker amp for the interior speakers are macking noise

 

I think if I were you I would try the jbl amp on the interior speakers. Then go from there.

 

no!!! its a class d amp and cannot be used for components not even taking into account that 300 watts per side would murder his comps. hes already been instructed to used the KICKER amp to run the subs with and see if its a wiring issue,

 

ok, I didn't know it was a class D amp. anyway, I didn't mean for him to crank it up, just try and see if the screeching was still there. I've had trouble like this before and I'm just trying to help the guy.

Assassinroon- only other thing I can think of is maybe a bad rca plug. I've had it happen to me once, and I sent my amp off to be fixed, they sent it back, charged me $150 and come to find out, it was an rca plug. Now I troubleshoot before sending anything off. Good luck.

 

no problem. i just did not want him to read this and do it because he wanted to do that also but i told him to use the kicker amp on the subs. i still think its somewhere in the integrity of the install...

 

I feel for him, been there and it sux. Last time it happened to me, had my truck tore APART for 10 hours. finally found it though. very frustrating.

 

i have the same problem with my max too. i have a (pioneer deh-ph4600mp) head uint and two power acoustick's amp's.the one running my sub's is a (820 watt) and the one running my high's is(620 watt's). i have moved my ground's ran new rca cables.new 4 ga power wire,new 4ga ground wires.new speaker wires . i am lost .......when the car is off nice sound ,when the car is running man it suck's to here that nosie comming from my mid's and high's. i have my 620 all the way down .so can some one please help me . i love my tump but if i can not get this out i will pull it all out and get ride of it all.oh and the head uint is new and so are both amp's and sub's and mid's and high's..i even put new ground wires on the battery and on the motor. i used 4ga on both.

 

i have the SAME prob, but i didnt even install an amp yet. its coming from my rear stock speakers, which are going to be replace anyway, but i dont want this noise coming when i install new speakers. by the way, when i was installing my front speakers i tore off the adapter and the wire was a bit short, so i just used regular home speaker wire to extend it, is that ok, or do i need to buy car audio wire cuz it might be shielded.

 

okay update guys the rca cables are fine, everything else is fine lol Still getting the noise. Plz some audio heads get in here try to help me out

 

You said earlier that the noise is in tune with the engine and gets "louder" when you rev the engine. Do you actually mean it gets louder, or that the pitch goes up and down with the engine rpms?

You also wrote: "Today i found my found was fading in and out and now this screech noise is here!" What do you mean your found (sound?) was fading in and out? Did you resolve that or is that still a problem too?

And finally, is it truly a screaching sound, or just a whine?

If it's alternator whine, then it's most likely a poor ground. I guess we need more info, if what we've been suggesting is not working.

Tony

 

okay tony ill give ya some answers

The pitch goes up with the rpms isnt that the same thing as getting louder?
Yes sometimes my sound fades really low but that has stopped for now
And its more of a whine so im guessing its a alternator whine.

I check the grounds on the amp sanded them down and the head unit ground is fitted. What else cna i do ?>