Eliminate POP on power off

[jol50]

I'm not entirely clear what all is happening here, but I did have this issue with a car last year. I tossed in a system with an old 2x30w and a 2x75 bridged for a sub. The sub would bump on turn off of the key only, when radio was on. Well for this little rig I just stuck an 8ga into the fuse box for power to amps, and it was switched. That caused the amp to turn off via power loss instead of remote off. That was the entire issue. I swapped the power to an always hot source and it was fine.

[ppia600]

Originally posted by I Am An Idiot
The purpose of the following is to allow your radio to stay on for a fraction of a second after the amp turns off. This will only eliminate the pop when turning the key off. If you turn the radio off you will still get the pop.

The diodes are available at Radio Shack part number 276-1661
The cap also from Radio Shack part number 272-1022

You will need to cut the switched wire going to your radio and insert this circuit.

These diodes will work with my method too. You could do this and just turn the key off but instead use the cap on the epic like I suggested.

Here is another one of my crappy atari like attempts :