volume cuts out

I checked the voltage at the amp with the truck not running and it was showing 12.4 volts at both amps. Checked the batt with the DMM and it showed the same. I spent most of my time yesterday working on my buddies Focus so I didnt get to check the voltage while driving. As far as having another head unit laying around I don't. The shop I bought mine from would probably let me borrow one as long as I use it in their parking lot... Back to it.

And while metering the amp you experienced the volume loss...voltage stayed at 12.4?M.E.C.P & First-Class

Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

I didn't have the truck on at all.... so no sound what so ever. I've got to get a new bolt to replace the one where the batt grounds to the motor and after I put that back on I'll check the voltage with the power on.

ok checked the voltage with the car running: 14v at the batt, 13.8 at both amps. Volume is still dropping out... Thoughts anyone?

Are you checking the voltage with the amp playing loud?

70% (approx) of max volume on the head unit...

Ok so I get in and start my truck this morning and instantly the front speakers are doing the normal deal of not playing as loud as they should and the back speakers and sub (playing off the same amp) aren't playing at all. I do however get a popping sound every couple of seconds from the rears.  I checked the voltage to make sure it was getting power and both amps were showing 14.38v.  wth????

What wiring...What was it...Rca's...?M.E.C.P & First-Class

Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!

Had the channels backwards on the amps. The amps are 4ch amps and I was running one bridged for my sub. When running that set up the manf. says to run the front channel for the sub. I had it set to the rear. So I swapped my speaker wires and rca's. Reset my crossovers, adjusted my gains. And voila! Audio heaven. Guess that's what I get for finishing my install at 2am on a weekday. :-l Thanks for the assistance.