Whirling Noise

[chetzar]

The speaker on my drivers door of my 93 explorer xlt has this annoying ass whirling sound. it's the only speaker that does it, and it did it with the stock speaker and with the aftermarket speaker I just put in (got some Blaupunkts from a friend for $50, and they actually sound really good). The noise gets lounder when I accelerate, and thought at first it was partially from a bad speaker, but now i'm not sure what it is. My dad had told me awhile back it might be from my alternator, but we replaced that so that's probably not it, he also told me it could be a grounding issue. Any ideas on what it could be and how I would find a grounding issue if I was having one?

 

[OldRedB2_84]

its a bad ground.
check the ground on your h/u first then the speaker grounds, you will just have to follow wires.

Good luck!
Nick

 

[aznboi3644]

Are the speakers externally amped????

The problem is not always a bad ground.

 

[chetzar]

No, I took the connectors off the stock speakers and used them to connect to the wires inside the door. Everything was soldered and taped, the HU was all soldered and shrink wrapped and it has a wiring harness.

 

[aznboi3644]

Try making a new ground for the HU

 

[chetzar]

As soon as I get my explorer back i'm going to try and change the ground for the HU (maybe disconnect the ground from the harness and extend the cable, and screw it on somewhere, and i'm going to take the dirvers door panel back off and make sure i taped my solder connection for the plug i pulled off the stock speaker. Might be a few days though, its in the shop to see about geting my oil leak fixxed and my 4x4 diagnosed and possibly fixxed.

 

[aznboi3644]

I'd either make a new ground the the frame or to the battery

 

[DOZIER]

I am sorry but I have to laugh at the replacing the alternator for alternator whine. All jokes aside. In the school I am in, they teach you to re ground the head unit in the kick panel floor after scraping the paint away and using a self taper. Just run the wire directly out in the open and down under the dash on the passenger side away from any wires and ground it under there, then turn on the radio and check it out before moving on to the next step if that doesn't fix it.

 

[Infinity08]

It seems like there was also a valid ground in the console area you could try. If you have some alligator-clip jumpers, you could try a few spots just to test, and if it works, permanently run a wire. I will say that in theprobably 500+ head units I've installed, I've never had a ground loop from the factory deck ground.

 

[chetzar]

I am sorry but I have to laugh at the replacing the alternator for alternator whine.

I didn't mention it, but the alternater actually went bad, hence the replacing it, at the time i had ****ty stock speakers that were blown, so I actually just took the speaker out, and had never put it or another in till now (replaced the alternater over the summer).

 

[DOZIER]

K. Thats cool..
Aaron, I had a ground loop from the factory ground in my explorer. There is noise feed back in most factory head unit grounds because they share grounding in the same location with multiple items in the dash. The problem is that it is so faint that you cannot hear them until you put a something serious into the car that amplifies that signal. This is what they are teaching at my school at least. They did prove it on 4 out of 6 cars of the students at the school also.

 

[chetzar]

still there

well, i regrouned my HU and its still there, unless I picked a bad spot for the HU (put an O ring on the end of the cable and attaced it to the nut on the power brake booster, figured its right on the chassis) So I guess this spring when i get a new HU (want an Alpine with the iPod controls) and new speakers (have 5.25 blaupunkts atm going to 5x7 JL audios) i'll take the dash out and look around for exposed wires and make sure I have a good ground for the new HU.

 

[DOZIER]

Try running your power and ground directly to the battery. If it is still there. You know it is in your signal cable. If it goes away...Re run your wires.