#1710830 - 09/26/09 09:43 PM
new user in need of help
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homework
SD Newbie
Registered: 09/26/09
Posts: 7
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here is my problem. one day i was listening to some DMX and all of my subs start rapidly vibrating at 1 tone. turned off my truck and tried it again and still vibrating even when i turn my volume to "zero". i was told it might be and output from my HU so i tried my cell phone pluged in with the y adapter to my amps input. it worked fine and it was on beat. now thinking its my HU i go and purchase a new one... unfortunately im having the same problem and in need of help. what would it might be? future thanks, christopher o. edit .... im looking through some thread and yes it is a popping sound like a machine gun.
Edited by homework (09/26/09 10:38 PM)
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#1710837 - 09/26/09 10:42 PM
Re: new user in need of help
[Re: homework]
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kamikazePSI
Super Trooper
Registered: 12/02/01
Posts: 5824
Loc: TX
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sounds like the RCA cable got pinched/cut somewhere....
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PM me if anyone wants to buy a 154 count of metra dash kits, and wiring harnesses from me. nearly all of them are unopened. asking $175 + shipping. 
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#1710839 - 09/26/09 10:51 PM
Re: new user in need of help
[Re: kamikazePSI]
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homework
SD Newbie
Registered: 09/26/09
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i hooked up my cell phone to the amp via y adapter and it played fine to the beat...
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#1710840 - 09/26/09 11:05 PM
Re: new user in need of help
[Re: homework]
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kamikazePSI
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Registered: 12/02/01
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did you plug in the y adapter at the amp? or at the end of the rca cable behind the radio?
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PM me if anyone wants to buy a 154 count of metra dash kits, and wiring harnesses from me. nearly all of them are unopened. asking $175 + shipping.
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#1710847 - 09/26/09 11:24 PM
Re: new user in need of help
[Re: kamikazePSI]
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homework
SD Newbie
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i attached the y adapter at the end which plugs into the hu. so that elminates the rca cable. i read a recent post how the guy disconnected his alternator and it stopped making that vibrating popping sound and i gave that a try. that solved the problem and sounded great. my question is how can an alternator cause that problem even when the engine is off?
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#1710851 - 09/26/09 11:32 PM
Re: new user in need of help
[Re: homework]
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kamikazePSI
Super Trooper
Registered: 12/02/01
Posts: 5824
Loc: TX
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try a new ground for your HU. find a good chassis ground.
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PM me if anyone wants to buy a 154 count of metra dash kits, and wiring harnesses from me. nearly all of them are unopened. asking $175 + shipping.
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#1710870 - 09/27/09 06:49 AM
Re: new user in need of help
[Re: kamikazePSI]
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keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker
Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL
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agreed. fix all grounds, HU and amps. also, upgrade the big 3.
your alternator may need service, the regulator may have failed.
what amp?
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#1710901 - 09/27/09 09:45 AM
Re: new user in need of help
[Re: keep_hope_alive]
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homework
SD Newbie
Registered: 09/26/09
Posts: 7
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HU jensen vm921
AMP powerbass xa-900
SUBS re audio sx 12's x 2
install done at a shop...
doing all fixes as i post....
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#1710937 - 09/27/09 12:41 PM
Re: new user in need of help
[Re: homework]
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homework
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Registered: 09/26/09
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went to autozone and tested the alternator ... passed! my truck is killing me. while the alternator is off im playing my headunit, speakers, amp, and subs work fine but now hissing noise.
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#1710971 - 09/27/09 04:49 PM
Re: new user in need of help
[Re: homework]
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homework
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now whenever i step on the brakes there is a thump.... my truck is laughing at me!
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