Whistling through speakers...ground?

[TriNiCorD99]

Circuit City installed my amp/speakers a couple of years back...there has always been a whistling sound, engine noise i assume, through the speakers. I should've just taken it back from the start, but i was lazy (and at a higher volume, you can't hear it). Is this caused by a bad ground location? If so, does anyone know a good place to ground the amp (its located in my trunk on the back seat)?

Thanks in advance.

Well bro ill tell you what. I have had my system for years now which i installed myself and only a couple months back did this annoying noise start comin through the speakers. I did all the stuff people said above.....sand ground spot, positive wire was run on opposite side of rca's, even got a ground loop insulator. Plus i even grounded off the metal frame that holds the deck in place and i ran a direct ground from the battery to the sterio. After all that.........i STILL HAVE THE NOISE!!! lol

But i do know where it is coming from. I have a pioneer N2 installed in the car and i get the feedback from the fan in the N2. It's really weird but sometimes it goes and sometimes it comes back. It really pisses me off cuz i dont like having anything not "normal" going on with the car, but to this day i am still stumped on how to fix it....lol

So i dont think im helpin out at all but just lettin you know all the stuff that i have done.....but maybe one of them will work for you!!!!!

 

[pingbull]

Well bro ill tell you what. I have had my system for years now which i installed myself and only a couple months back did this annoying noise start comin through the speakers. I did all the stuff people said above.....sand ground spot, positive wire was run on opposite side of rca's, even got a ground loop insulator. Plus i even grounded off the metal frame that holds the deck in place and i ran a direct ground from the battery to the sterio. After all that.........i STILL HAVE THE NOISE!!! lol

But i do know where it is coming from. I have a pioneer N2 installed in the car and i get the feedback from the fan in the N2. It's really weird but sometimes it goes and sometimes it comes back. It really pisses me off cuz i dont like having anything not "normal" going on with the car, but to this day i am still stumped on how to fix it....lol

So i dont think im helpin out at all but just lettin you know all the stuff that i have done.....but maybe one of them will work for you!!!!!

does your noise line up with the engine? mine is definitely tied to how fast the car is going...

 

[Wildman]

^ sounds like alternator whine. do what finch suggested, although I'd check your ground first its easier

 

[TriNiCorD99]

does your noise line up with the engine? mine is definitely tied to how fast the car is going...

Yep get louder when you accelerate. But hits a threshold tho

 

[Wildman]

^ information fail

 

[thecrown59]

could also be a RCA connector touching a ground...

 

[TriNiCorD99]

^ information fail

nah....its a combination of the alt and the fan from the N2...but the alt whine goes away and comes back but the N2 fan noise always stays

 

[samsizzle]

i had the same problem, bought a ground loop isolator for radioshack and it worked like a charm,

i would look into that if i were you

 

[dynasty]

Yep get louder when you accelerate. But hits a threshold tho

no and yes. no, it doesn't get louder when i accelerate when my dvd player is off. yes, it does get louder when i accelerate when my dvd player is on. haha. weird but it does. i guess i need to find a better ground for my dvd player.

 

[dynasty]

i had the same problem, bought a ground loop isolator for radioshack and it worked like a charm,

i would look into that if i were you

tried that. didn't work very well. i heard the speaker wire type is better than the RCA one. but the RCA ground loop isolator from radioshack didn't work for me.