well i got my first one in the other day and put it in a 1.5 cubic foot box tuned to 34 hz.
we went for a trip on friday and i was really impressed for a $30 sub.
until we got to our destination and i flipped the seats down to see if the sub was warm at all. to find the dust cap off and the coil unwinding
this was all off of 200 rated watts needless to say i wont be buying more of these
also when i had it hooked up free air at home of 15 watts the magnet got severely hot after about 10 minutes of play
mojo is the awesome