[mojomike]

One question, John: Is the room closed or open to another area?

If is closed, a room gain in a small clased area will offset the natural roll off of a sealed sub and give you something close to a flat response in the lower frequencies.

Tf the room is open, the sub effectively "sees" a larger space and there will be less room gain in the deeper frequencies. A good ported sub may might do better in this case for the deeper frequencies.