So room size is 15x20 and it’s a b&w asw2000 with a 12 inch driver, big. Seems it would do the same where ever it is since wavelengths are so big. Does it matter where you place it in this room?
please consult your subwoofer manual. positioning is the first step and there are many more to follow. REL has some good online videos about subwoofer basics.
I moved my sub around and measured from the sweet spot with a mic. It makes a big difference, and one can also hear it if you do a "sub crawl." (Google that.) Besides moving it to different locations in the room, try raising or lowering it. Also generated big changes.
Positioning is the *most* important thing in locating a sub. Then level matching, then phase adjustment.
Simulators are great for giving you ideas. When I’ve used them, I’ve never had measured response in the room agree with the simulator. Maybe simulators have improved since -- I would expect the REW one to be top of the class -- but don’t rely on them too heavily.
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