hi, i need some advice as regards finding the right sub. Im after heaps of low bass as well as great sound quality (not just boom boom) but problem is it needs to be able to work in a box volume of 1.85ft3 or smaller and have a mounting depth no longer than 7", can fit 12" or 2 10" (possibly 15") I've got a rockford BD1000 mono amp which is 1000watts at 2ohms. From what i've looked at so far DD looks pretty good. Any advice would be great and if you have just the right sub for me to buy that would be even better!