alpine type x and rockford amps problems

Ok here is what I have. I have 1 type X 10in. sub. It is the 4 ohm DVC style. I also have 2 Rockford Fosgate 1200W 2 channel "punch" series amplifiers (the ones that are about 3 years old). I build the ported box to alpines specs on their site.

My problems are as follows: After running the sub for a little bit it starts to smell a little funny, not like a burnt speaker but similar to glue or resin. I reenforced the box with fiberglass resin but it is dry and has been cured for over a month. The other problem is after a while one of my amps gets hot and then the thermo protect kicks it off.

I have the amps where they can get enough air too. I have plenty of power getting to them too. I have 2 alternators, 2 optoma redtops and 1, 1 farad cap right before each amp. I am constantly at 14.75 volts.

any suggestions?

You bridged each amp to one voice coil?  To *one* 10-inch woofer?  Huh. 

I mean, this isn't really an answer but my box still smells a little like resin and I built it like 3 years ago.

Anyway, I'm just wondering here, this doesn't really have anything to do with your problem obviously, but, how do you have your red tops wired together?

... my box makes my truck smell like fiberglass almost everytime i bump it, especially on nice days with the window open-  aaaaaaaaaaaaaaaahhhhhhhhhhhh!

built it well over year ago.  let it dry with a fan on it for a week before i put it in, too-lol!

i know it's possible to wire up two amps to a dvc sub, but how picky will the sub/ amps be in relation to how evenly the gain is set on each amp.  i haven't had too much experience here, but my mind is telling me that if the amps aren't putting out the exact same wattage, then you might run into problems?     anyone with a definite answer on that?