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annoying whine sound from speakers (Mr2)

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=35002
Printed Date: May 09, 2024 at 7:34 AM


Topic: annoying whine sound from speakers (Mr2)

Posted By: tony4
Subject: annoying whine sound from speakers (Mr2)
Date Posted: July 03, 2004 at 2:58 PM

The speaker was fine when it was connected to the headunit.

The whine sound has started since i've amped it up using MTX 4244 (no problem on my old car), it start when the engine started...it sometimes stop whine for a few sec, however as soon as i put into first gear.. it starts whine agian..

For more information, it does not changes pitch when rev and i mount it at the back of the passanger seat. (quite near to the engine)

help~~~




Replies:

Posted By: DYohn
Date Posted: July 03, 2004 at 3:26 PM
Check: ground, gain, speaker wires, RCA cables, LOC if you're using one.

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Posted By: tony4
Date Posted: July 03, 2004 at 4:22 PM

thanks for your reply.

Ground is fixed direct to the chassic

I've tried to varies the gain, no help even on zero gain

speaker wires and RCA are connected properly..

I'm running all wire in the same route... is that the problem, but it on occurs when the engine starts





Posted By: DYohn
Date Posted: July 03, 2004 at 7:14 PM

Are you using an LOC?  If so, replace it first as those tend to be very prone to picking up induced noise.

Other things that can cause this problem include faulty ignition wiring somewhere in your engine compartment. A bad Coil, cracked distributor cap or spark plug, bad plug wire, plug wires not being supression type, etc.  This can be very, very difficult to find.  Try moving the amp away from the engine compartment and see if it helps.



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Posted By: tony4
Date Posted: July 04, 2004 at 10:46 AM

sorry... what is a LOC?

I've just found out it changes pitch when i steer the steering....it must be the power steering is playing up....

any suggestion?





Posted By: DYohn
Date Posted: July 04, 2004 at 11:09 AM
LOC is a speaker-to-line level converter.  I still think you'll have to move the amp at the very least...

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Posted By: dontknow
Date Posted: July 04, 2004 at 12:13 PM

That right there could be your prob... trying running the power alone... with the rca's as far aways as possible...

tony4] wrote:

/p>

I'm running all wire in the same route... is that the problem, but it on occurs when the engine starts






Posted By: nychris2004
Date Posted: July 04, 2004 at 3:36 PM
u should make sure the power wire and the rca's are ran back on seperate sides of the car or else there will be noise. i dont know if the remote wirwe matters but i know i had ran my power wire and rca's on the same side once ther was alot of whining noise coming from the speakers, i had to move the rca's to the other side and it was fine




Posted By: djMINIoompa
Date Posted: July 06, 2004 at 12:23 AM
Yes. Get your power and RCA's away from eachother. Second, your ground maybe fixed to the chassie but you could still have a ground problem. If the wire is not touch bare metal (paint in the way) that could cause for bad conncetion. Check to make sure the paint is scrapped off. But mainly, get the wires away from eachother.

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