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Subwoofer placement - does it matter?

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?


emergingsoul
erik_squires
16,017 posts
 
Yes. 

To play with this idea, try out the room simulator built into the Room EQ Wizard software, which is free.
Best,
Erik
hilde45's avatar
hilde45
4,974 posts
 
Thanks, Erik. Didn't realize it had that!
mike_in_nc
1,139 posts
 
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.
emergingsoul OP
1,096 posts
 
The lenghth of a 40 hz sound wave is 28 feet.  I don’t see placement of a sub to matter all that much unless it’s in an auditorium
jon_5912
601 posts
 
Placement makes a huge difference that is easily measured with a real time analyzer and measurement microphone.  I did a bunch of that when I was younger and differences can be huge.  Resonances build up and the sub in a certain spot will excite certain resonances way more than in another spot.  You can just put on some bass heavy content and walk around the room and notice huge differences.  Some places will be very bass shy but if you stick your head near a corner the bass will be much stronger.  It's not subtle.
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