popping noise from sub when amp powers dn

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=103334
Printed Date: May 04, 2024 at 7:28 PM

Topic: popping noise from sub when amp powers dn

Posted By: teddybeernuts
Subject: popping noise from sub when amp powers dn
Date Posted: March 23, 2008 at 10:04 AM

Good morning and Happy Easter everyone!

I was hopeing that someone could help me with an issue that i am having. I have a JL 250/1v2 amplifier pushing one Kicker CompVX12 in a vented box. I have 4 gauge power and groung and one set of Monster RCA running from deck's sub out to the Amp in port. The amp does not need a remote turn on because it has audio sensing from the RCA's which is pretty cool.

PROBLEM: When i take the faceplate off or turn my car off i get a thump about 1-2secs later,from the sub obviously. I thought it was the ground because i grounded it down to where another wire was grounded. I regrounded to a new surface and scraped the paint off but i still have the same results.

By no means am i an expert but i have installed many systems in my time and never had this issue. I still think it is the ground but i'm not positive and need guidance. Any help or ideas would be greatly appriciated.

Info:

Deck-kenwood excelon kdcx891,amp-JL250/1v2,Sub Kicker compvx12, 2001 Acura TL 3.2, 4 gauge wire

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Ted

Replies:

Posted By: davngr
Date Posted: March 23, 2008 at 10:55 AM

the pop* happens because your amplifer is still powerd\ when the deck disconnects*. if you can use a remote wire for that amp i would do that, when you dont use a remote wire all sort of wacky sounds arise.

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life is a comedy to think, a tragedy to feel

Posted By: stevdart
Date Posted: March 23, 2008 at 5:21 PM

amp turn-off pop eliminator

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: i am an idiot
Date Posted: March 23, 2008 at 5:55 PM

Connecting the remote wire and not using the signal sensing feature of the amp will eliminate the pop. The turn off pop device will work too. But with it you will still need to remove your deck to get to the remote wire. So why spend 25 dollars unless you need to.

Posted By: techman93
Date Posted: March 23, 2008 at 7:04 PM

a relay with a diode across works also and is if the remote wire from deck still makes sub pop.

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The wire I'm test'n isn't doin' what it's supposed to be doin'... I am so glad I printed that tech sheet, with the wrong info.
Do it right the first time... or I might have to fix it for ya

Posted By: StealthEs
Date Posted: March 24, 2008 at 9:33 AM

Run the amp turn on wire and turn the signal sensing off. Problem will go away.

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Cris

Posted By: teddybeernuts
Date Posted: March 24, 2008 at 6:18 PM

Thank you everyone for the advice, I will follow through and let you know how it works out!

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Ted