Subwoofer size for 1500 cubic foot room


Considering purchasing a Subwoofer. After reviewing and testing several different set of speakers in my listening room (local dealers allowed me to bring them home) I felt that the improvement over my old Thiels is not warranted. However, temporarily using my surround sound systems sub(from our family room) has definitely produced a difference. I am now on the hunt for a sub. Looking at 8-10" models priced up to $1250.00. Velodyne seems to have a great deal on the Optimum 8 (for $699.00 reg $999.00) my only hesitation is whether or not 8" is sufficient for a 12x14x9 room. I listen to music at moderate to moderately loud levels and watch movies with this system, as well. Any comments on this sub and its size.
raya
I owned the Optimum 8 and used in a 13x15x8' room. You don't need any more.

You might also consider the new Rel T7. I just switched to that and found, while not going quite as deep, it has a much nicer upper/midbass and integrates better. It vitally disappears, which I could not get the Velodyne to do.

Both are very good subs for the money and all you need in your room.
Yes I have the same sized room and one Velodyne dd10 The sub plays nicely with my Omegas but I am looking for a mate. Not for more bass but for stereo and yeah I know you cant hear bass direction below this or that frequency. I`m too tired for a debate.