I’ve had subs in rooms as small as yours before, and they sounded just fine. If it seems like mid bass is lacking, it’s most likely because you have a nasty peak in frequency response in the lower frequencies. REW can show you where it is, and parametric EQ can tame it. Then the sub should sound normal. The exception might be the unusual sub that doesn’t have enough output at the top end.
Regards,
Wayne A. Pflughaupt
