Bass absorption in only 3 corners?

[scrubs]

I'm just getting into building some treatment for my bedroom studio. My room has the door located in one corner, making it not really possible to put a panel there. I'm putting 1'x8'x4" mineral wool framed panels stradling the other three corners. I'm building some 2'x4'x4" and 2'x6'x4" panels to use for walls, gobos and clouds. I could certainly stick one of these in the 4th corner during mixing (with the downside of not being able to get out the door very easily). Is that the best way to go, or do you guys have other suggestions?

 

[wannabecomedeat]

use a strap hinge on the 4th bass trap so you can move the bass trap easily and then open the door
my 2 cents

 

[Innovations]

Two observations.

First, you can put the bass trap above the door, or on the opposite wall/ceiling edge. There is nothing magical about the wall/wall edge of the corner and there is nothing magical about having an exactly 45 degree angle.

Second, bass builds up between one corner of a room and the opposite diagonal corner (including high to low) because that is the longest dimension of the room. Thus you don't necessarily have to have a trap in every corner so much as being sure that every diagonal has a trap in one corner of the pair.

 

[Tonio]

For better results use 2x4 and full floor to ceiling corner BB absorbers if possible. Do not have a gap, make it snug to the walls for under 100 hz absorbtion. If there is a gap on the floor /ceiling keep it minimal, but do not have a gap on the sides , you'll be wasting your money.
Use thinner stuff for reflection areas with a gap behind them. Like 2" w/ 4" or so spacing from wall(s).
Hopefully that door is in the rear? You can supplement with having a large BB
on that wall w/ the door.
Would not having a corner trap in all 4 corners create asymmetrical prob? Try without, and do some listening/measuring tests. If its wack , put one up thats removeable, so i can you plan to get out?? Naah, you don't need to get out-just get a mini porta potty-case o beer and pizza. Good for a couple days

Then throw up some clouds w/ a hard floor.

T