sub thumps at turn off
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=126784
Printed Date: May 12, 2025 at 7:57 AM
Topic: sub thumps at turn off
Posted By: dred
Subject: sub thumps at turn off
Date Posted: March 30, 2011 at 9:36 AM
hey guys i just added a brand new clarion eqs to my system and my sub thumps when i turn off the engine. I had a power acoustic pwm-19 eq and never had this problem what can be the problem and how do i fix this? thanks
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dre
Replies:
Posted By: i am an idiot
Date Posted: March 30, 2011 at 10:10 AM
Are you sure you do not have the remote and constant wired backwards?
Posted By: dred
Date Posted: March 30, 2011 at 10:16 AM
naw man if i power down my deck with the power button amps and signal processors all turn off without the thump, but once i start the engine and turn off the engine right back to off position i get the thump
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dre
Posted By: DYohn
Date Posted: March 31, 2011 at 10:39 AM
You want your amps to turn off first. If you have a power cap in the system, try taking it out and see if it's any better. If you don't have one in use, then perhaps you just need to train yourself to hit the power button before you turn off the engine. ------------- Support the12volt.com
Posted By: Thack79
Date Posted: March 31, 2011 at 1:12 PM
run your remote turn on to your accessory instead of the dedicated remote wire on the deck so that your amp cuts off earlier.
Posted By: i am an idiot
Date Posted: March 31, 2011 at 10:02 PM
Temporarily, for troubleshooting purposes only, connect the EQ's remote wire to constant voltage so it will not turn off. Does your amp still pop when turning it off? If it still pops, the problem is not associated with the EQ. If it does not pop, I can help you with a circuit to keep the EQ powered up untill the amp turns off.
Posted By: phil6710
Date Posted: April 02, 2011 at 11:42 PM
I could definatly use this information I have a very simalar problem.
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Solartech Window Tinting and Electronics,contract installer
Posted By: i am an idiot
Date Posted: April 03, 2011 at 8:12 AM
Posted By: i am an idiot
Date Posted: April 03, 2011 at 5:47 PM
The above diagram will help you only if you have determined that the EQ turning off is causing your problem. The circuit will allow the EQ to remain on until the amp turns off.
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