amp signal on constantly
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=127321
Printed Date: May 16, 2025 at 12:56 AM
Topic: amp signal on constantly
Posted By: t&t tech
Subject: amp signal on constantly
Date Posted: May 13, 2011 at 5:54 AM
What causes this? I have verified that the amp is sending a signal to the sub constantly. I know the amp is faulty but what exactly is the defect? I can't remember the brand off hand, but if i could get a general insight as to what might be the problem i would appreciate it. Thanks.
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Replies:
Posted By: i am an idiot
Date Posted: May 13, 2011 at 2:47 PM
Do you have a Pioneer deck?
Posted By: t&t tech
Date Posted: May 15, 2011 at 12:38 PM
Nope, JVC.
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: KyferEz
Date Posted: May 15, 2011 at 6:47 PM
Sound to the sub without an input? It's caused by an oscillation in some section of the amp. It can happen anywhere from the input filters to the voltage gain section to the final output stage.
Gotta search for the oscillation with a oscilloscope, tracing the audio path and testing each section until you find where it originates from.
Try adjusting the gain pot and the filter pot if you have it to see if the oscillation goes away at any setting...
Posted By: t&t tech
Date Posted: May 16, 2011 at 5:26 PM
Ok, thanks man, i see you've joined since 2002, nice to see you around again,
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: i am an idiot
Date Posted: May 17, 2011 at 6:58 PM
Is it a Kicker amp?
Posted By: t&t tech
Date Posted: May 20, 2011 at 6:25 AM
Yup.
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: i am an idiot
Date Posted: May 20, 2011 at 1:34 PM
Kicker uses the same type of surface mount fuse the same way Pioneer uses them. Which amp is it? Is it a 2 channel amp?
Posted By: t&t tech
Date Posted: May 20, 2011 at 6:56 PM
No, monoblock, but i don't really wanna repair it, i just wanted an idea as to what the problem could be so that whenever i encounter it again and the customer asks what's the problem i can muster up something more than the amp is defective  , so what's your general theory mr IAAI? ------------- COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: i am an idiot
Date Posted: May 20, 2011 at 8:09 PM
Have you ever heard the noise caused by the blown fuse in the Pioneer decks? Same type of fuse in the shield of the RCA cable connection. If you see it again, let me know the model number of the amp and I can tell you where the fuse is located on that particular amp.
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