Amp Cooling Fan Question

[chitowndad]

I feel sheepish - that did the job! I connected the cooling fan hot wire to the amp switch wire and the fan negative to the amp ground terminal and it works! That was the only thing I didn't try... Thanks!

I didn't realize that the switch wire is a full 12 V when on!

Now my pop sound is back! When I turn off the car it pops. When my amp switch wire is disconnected - which disconnects the amp - there is no pop sound so clearly its coming from the switch wire that I'm running from the head unit harness to the amp switch input...

Any insight is appreciated!

-Steve (a novice stereo guy)

[chitowndad]

One more on this topic -

I did find that if I turned off the head unit before removing the keys from the ignition I don't get a pop from the amp

If I leave the head unit on and pull the keys out I get the pop. I think the switched lead from the head unit is doing something goofy to the amp...

Any insight on this topic is appreciated.

-Steve

[Topless]

That POP is a common problem even in professional audio. Many amps have a power up delay or ramp up to avoid this. If yours does not simply turn down the volume on your head unit before power up/power down so you don't amplifiy the POP.