yes i have the rca cables in correct and i switched it around to check too and yes i set it up myself. and it did work before i took the system out and i did it myself before i took it out and worked perfectly for a year.
ok have you tried a different amp with your sub, or a different sub with your amp yet? it doesn't look like it is the wiring if you have already tried a that
I had this happen on my Dual Voice Coil sub's and it was that the wires going to the wire conn on the box (the black piece with the red/black conn cant think of the name) it was backwards. So just DOUBLE check your wires like no other... Check to make sure the settings on your amp didn't get switched, something like that could of just put it out of wack? Good luck
i have check on another sub that was never messed with but still the same thing, but i haven't tried another amp though. Yes, everything was connected the same and everything to the power as i had it before