Is your floor a suspended wood floor? Can you get under it?
If yes to both, the biggest thing you can do to improve the bass is to brace the floor.
I have two 12' long 4x4s running front to back, (13' deep room) about 5' apart, perpendicular to the joists, held up by 4 of those height-adjustable basement support posts.
I have since added a layer of 3/4" plywood on top of the original floor (w/ Green glue in between.
Everything I do the the floor makes the sound so much better. I know that I could not have the sound I do now had I not braced the floor. Absolutely essential.
-Mike
If yes to both, the biggest thing you can do to improve the bass is to brace the floor.
I have two 12' long 4x4s running front to back, (13' deep room) about 5' apart, perpendicular to the joists, held up by 4 of those height-adjustable basement support posts.
I have since added a layer of 3/4" plywood on top of the original floor (w/ Green glue in between.
Everything I do the the floor makes the sound so much better. I know that I could not have the sound I do now had I not braced the floor. Absolutely essential.
-Mike