You need bass trap pure and simple. This is your bottom line need and it will get you what you are looking for period. Buy GIK corner bass traps stacked floor to ceiling in your corners and you will be amazed.
bass suggestions 12 x 16 room....
what would be the ideal arrangement for producing non boomy bass in this enviroment? I currently have foorstanders with 8in drivers...is this too much for this room?...Bass is a tad thick in the lower registers...room nodes?