Car speaker/amp/subwoofer problem

[alternativesurf]

So just yesterday i noticed that my subwoofer was cutting in and out. It would work, then shutdown, then work, then work but softly, continuing till i shut off my stereo.

The amp is a Polk Momo c300.2 and the sub is a Polk Momo 12" mm2124


Oh, and then as a second problem, my speakers started to shut off today, not at the same time, but shut off and stay off for a while, then turn back on and work for about 15 minutes, then shut off again

the speakers are polk momo mmc570's, and the amp driving them is a 2 channel mtx thunder 282
head unit is a pioneer DEH-P8MP

and all the cables power are firmly attached, tested, and working perfectly, thats what i tried first.

Any suggestions/ideas would be greatly appreciated. Thanks

[Kim]

Since both the Polk Audio and MTX amplifiers are shutting down, I would suggest checking the Battery and Remote power supply Voltages. Measure the Voltage at the battery, and at both amplifiers. The Voltage should only vary by 1/10th of a Volt or less. Next measure the turn on Voltage present at both amplifiers. This should measure 12.6 Volts or greater. The only thing that is common to both amps is the Pioneer head unit and battery. You could connect a small jumper wire between the positive lead of the battery that is feeding each amplifier and connect it to the "remote on" terminals on the amplifiers to see if the amplifiers remain powered up or shut down.

If the head unit uses a fuse in the "remote on" lead, try replacing the fuse if the remote on Voltage out of the head unit does not measure 12 Volts or more. It is possible that there maybe some wrong with the remote turn on circuit in the Pioneer head unit.

[C_Cooper]

I had the same problem a while back with my C300.2. I tried new everything (remote, fuse, power wire, ground wire, RCA but not the radio). It finally ticked me off so much that I went to Best Buy and bout a Kenwood amp. It's a great amp...lots of power but I don't like it...it's not my Polk. The Kenwood hasn't given me any problems but I bought a 2008 Civic Couple a few months back and I'm about to do a new install this weekend. I'm going to give the Polk a second shot before I take it to a further extent. Unfortunately there is no one around here that sells Polk any more so I'm sad