Dinzu

One more question, could going too low HZ wise one time do this? box is tuned to 31 hz and my subsonic was around 21-22 and it bottomed out pretty hard one time on a screwed song yesterday morning, then broke yesterday night barely hitting.

Put a DMM in the first set of terminals and got 0.00 so the coil is blown. Guess I will be ordering the recone kit from FI today, thanks guys.

Its always off on the HU but I will turn it off on the Amp and I will go check those two real quick and post back, appreciate the help man. Edit: Voltage at amp is 14.4 and on the sub output the highest it went on a sweep was 12.3 AC volts. Still no sub moving, so i'm assuming that means a voice coil is messed up?

Bass boost was on 4db. And are you talking voltage at the speaker - and +? Drove an hour and a half with it barely moving(flat eq settings, volume on 24/35, bass almost completely off) when this happened so not sure why it would of been clipping with those settings. I'll put a DMM on the speaker terminals tomorrow morning though and see if the coils are fine.

Not saying im getting that much, just set it using a DMM going by the square root of 2000 since im at 1 ohm

Do they go bad on low volume levels? Seems odd, its not being overpowered at all I only have the gain set to 2000 watts before box rise.

I have an Audiopipe 3500 on a Fi BTL 18, have been beating it fine for about 2 months now and on the way home from college tonight it cut in and out about 4 times then stopped working. It wasn't even turned up enough to actually bang, just enough to blend in with the highs/mids at low volume. I checked the amp and its not in protect so I checked all of the wiring to make sure everything was connected and it was, pulled the sub out of the box to see if the speaker wires were in and they were. What else could it be?