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Old 08-16-2012, 10:41 PM
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Subs are acting weird

Ever since I bed lined my jeep, my subs are making a weird noise. When I have the key turned on and the jeep off, my subs are just fine but when I start my jeep, the subs make a squealing noise and the higher the rpm the louder they squeal. Anyone know what the problem is?

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Old 08-16-2012, 10:45 PM   #2
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That, my friend is ground noise...so when you accelerate, the noise gets faster, higher pitch...sound right?

http://en.wikipedia.org/wiki/Ground_noise

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Old 08-16-2012, 10:49 PM   #3
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What he said^ happened to me rear speakers a while back
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Old 08-16-2012, 10:52 PM
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Yeah that does sound right. How do I fix it?
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Old 08-16-2012, 10:54 PM   #5
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So you hear this in your subs only? must be the ground on the amp, check that, make sure you have a good metal on metal contact from the cable to the frame/chassis. Also, never hurts to scuff away the paint or use a star washer to get a good bite
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Old 08-16-2012, 10:54 PM   #6
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Try cleaning the ground connection to the jeep down to bare metal.....or, your RCA cables are too closely run to your power feed wire....seperate them by at least 18 inches
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Old 08-16-2012, 10:59 PM   #7
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Try cleaning the ground connection to the jeep down to bare metal.....or, your RCA cables are too closely run to your power feed wire....seperate them by at least 18 inches
Ooh...good call i ALWAYS run power down one side of the vehicle and RCAs down the other...can't go wrong!
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Old 08-16-2012, 11:16 PM
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Okay well I took the wire wheel to it and no change. What is RCA cables?
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Old 08-16-2012, 11:20 PM   #9
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RCAs are the cables that go from the radio to the input of the Amp, same kinda cables that you use on a DVD player

RCA connector - Wikipedia, the free encyclopedia
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Old 08-16-2012, 11:38 PM
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Is there any way to unstrip a screw from an amp? Both my ground and pos are striped (from PO) and it is very annoying having to re-tape every time I do something with it.
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Old 08-16-2012, 11:44 PM   #11
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...i mean...there are options. If you can get the old screw out, you can drill/ re-tap the hole. Might not hurt to weigh the costs of a new amp, depending on the wattage of your subs. What exactly are you "taping"?
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Old 08-16-2012, 11:47 PM
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...i mean...there are options. If you can get the old screw out, you can drill/ re-tap the hole. Might not hurt to weigh the costs of a new amp, depending on the wattage of your subs. What exactly are you "taping"?
Re TAPE lol with electrical tape. There is no way (that i know) I can get the screw out.
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Old 08-16-2012, 11:51 PM   #13
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if you're taping your ground wire to the amp, that may very well be part of your problem. When it comes to grounds, you can't go overboard with wire gauges, no-ox, etc. The cleaner/tighter connection, the better.
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Old 08-16-2012, 11:57 PM
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if you're taping your ground wire to the amp, that may very well be part of your problem. When it comes to grounds, you can't go overboard with wire gauges, no-ox, etc. The cleaner/tighter connection, the better.
It is the wires that is the problem. Ever since I bed lined it. I put all the coords on one side of the jeep. Before they were all over the place under the carpet. So the taping of it in my case doesn't hurt it.
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Old 08-17-2012, 12:04 AM   #15
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if you are running all of your cables together, this has the potential to induce "noise" The power cable from your battery to your amp can cause noise on your RCAs, especially if the power cable is large and the quality or "shield" is poor. These are 2 different frequency ranges, Add into that the "taping" of your ground...no surprise you have an issue. Best bet, do you know someone that has an amp you could borrow? try that and see if it makes a difference. If not, try running temporary cables to isolate the issue.


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Old 08-17-2012, 12:06 AM   #16
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KCCO from CA!
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Old 08-17-2012, 12:09 AM
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if you are running all of your cables together, this has the potential to induce "noise" The power cable from your battery to your amp can cause noise on your RCAs, especially if the power cable is large and the quality or "shield" is poor. These are 2 different frequency ranges, Add into that the "taping" of your ground...no surprise you have an issue. Best bet, do you know someone that has an amp you could borrow? try that and see if it makes a difference. If not, try running temporary cables to isolate the issue.

Jordan
Okay well it is 10 pm here so I'm going to call it a day. But tomorrow I will see what I can do about the stripped screws to eliminate the taping and separate the wires. And I will ask around and see if anyone has an amp I can borrow. Thanks a bunch.
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Old 08-17-2012, 12:09 AM   #18
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KCCO from CA!
Chive on Homie!!!
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Old 08-17-2012, 07:34 PM
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Okay well I moved the coords around so that the power is separate from the rest and no change I even tried squishing the ground in and nothing.
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Old 08-17-2012, 09:20 PM   #20
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did you undo any cables when you linered your Jeep?
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Old 08-17-2012, 09:27 PM   #21
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did you undo any cables when you linered your Jeep?
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Old 08-17-2012, 10:29 PM
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Yeah I did
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Old 08-17-2012, 11:04 PM
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I unhooked everything from the amp not the stereo
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Old 08-18-2012, 04:06 PM   #24
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Did you move where you re-grounded the amp?
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Old 08-18-2012, 05:35 PM
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Nope that is still the same point
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Old 08-18-2012, 06:38 PM   #26
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Do they still sell noise filters for the power line at radio shack that used to help take out the whine back in the old days
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Old 08-18-2012, 06:44 PM   #27
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Did you move the subs closer to the wheel well?
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Old 08-18-2012, 06:55 PM
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My subs are on the back seat like they have always been and I have never heard of a noise filter for the power line.
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Old 08-18-2012, 09:18 PM   #29
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It's probably whine from the mechanics of the vehicle. Put something under the box to act as a buffer between the subs and the tub.
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Old 08-18-2012, 09:36 PM
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They are on the back seat

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