popping on sub with aftermarket radio

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=103396
Printed Date: May 10, 2025 at 4:35 AM

Topic: popping on sub with aftermarket radio

Posted By: dough
Subject: popping on sub with aftermarket radio
Date Posted: March 25, 2008 at 6:17 PM

I have a 2007 F 150,and i replaced the factory radio.Inow get a popping noise from the sub.I know that you can put a resistor on the amp turn on wire that will fix it, does anyone know.

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Dough

Replies:

Posted By: i am an idiot
Date Posted: March 25, 2008 at 7:28 PM

Need more info on the popping noise. It occurs at turn-on, turn-off, or when you change radio stations?

Posted By: zerepdivad
Date Posted: March 25, 2008 at 7:57 PM

if it's popping when you're turning on you can try this....

get 2 identical resistors, put one end of each resistor towards the factory amp turn on, and the other 2 ends one going to ground and one going to the amp turn on off of the unit. that worked for me when i came across this problem on an 05 mustang. hopefully what i said made sense it worked for me, and for reference it was a mustang with a "shaker" system.

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A DMM is a beautiful thing.

MECP Advanced Installer Certified.

Posted By: StealthEs
Date Posted: March 26, 2008 at 1:41 PM

put a 1k Ohm resistor on the amp turn on wire and your set.

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Cris

Posted By: coppellstereo
Date Posted: March 26, 2008 at 3:26 PM

Does your truck have a factory amp?

Posted By: techman93
Date Posted: March 26, 2008 at 10:31 PM

a 5volt voltage regulator from radio shack. 7805
posted_image

They cost about $1.60 and not too hard to wire up. The middle pin is ground and on one end will be your input from new radio (the right leg) and the other is the 5v+ fixed output (the left leg).
Looking at it as the picture above.

Most Ford factory amps and an Audi one I came across use a low voltage turn on. This will also make it pop when you change sources or tune radio by seek button.

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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: dough
Date Posted: March 27, 2008 at 5:32 PM

Thanx Chris ,that is what i thought but was not sure.

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Dough