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pop from speakers when power is turned on

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=4464
Printed Date: November 12, 2025 at 4:25 AM


Topic: pop from speakers when power is turned on

Posted By: nkpatte
Subject: pop from speakers when power is turned on
Date Posted: October 14, 2002 at 4:26 PM

wut up everybody,
i just finished up my first install of a new head unit (sony cdx-mp70) on my 2000 mustang w/mach 460.  everything went alright but i soon realized that when i turn the head unit on, there is a single loud "pop" from the speakers and then everything's okay.   i am using the existing oem amps (3x with the mach system).  does anybody have any ideas of what this could be?  if you need more details on the install, let me know.  thanks for the help!




Replies:

Posted By: djfearny2
Date Posted: October 14, 2002 at 8:50 PM
your getting a ground loop pop ground the radio with two different wire in two different location . meaning groung one wire to frame of radio than metal chassis behind radio your current ground may not be enough..

-------------
Jon
Installer/Help Technician
---coral springs florida---
mecp certification is not always needed. I have it and it has not helped me out at all. my experience out shines it.



Posted By: go2pac
Date Posted: October 15, 2002 at 11:47 AM
The factory amplifier is looking for a 5 volt remote signal from the headunit. Put a 4.7k resistor inline of you remote wire. That should take care of the  pops.

-------------
Karl

Pacific Accessory Corporation
Mobile Audio Interfacing Equipment
Connecting You to Your Music Since 1976




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