why sealed.. look at porting the shiva sub i linked.. Sub sounds very good, gets alot lower that alot of subs mentioned in here with its low fs.. It was also designed as a HT sub.. These things sound awesomesince I'm running one sub, would it be better to go with a 10" or 12"? I was checking out their website and it looks like I can run a 12" with a 1.75 cu ft box. Anyone run a 12 in a box this small?