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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Quadratic residue diffusers behind MMG's? posted by osuhog on March 28, 2007 at 08:44:45:
1) Remove the foam absorber beneath the screen.
(2) Take two diffusors (whether the quadratics shown or some other diffusor type) and join them back to back so that the diffusor side faces outward (perhaps easier to do with the quadratics if you build a "1x6" (3/4" thick x 5-1/4" deep finished size) open frame to mount them to--on the front and back sides of the 5-1/4" deep frame.
(3) Center the two-sided diffusor on the floor between the MMG's about a foot and half behind the speaker plane, with one diffusor side facing the front wall and the other side facing your listening position. Position them so that they're as tall as possible-- without, of course, obstructing your view of the screen, though the taller they are up to the height of your raised MMG's the better for serious listening. Since they're semi-portable, you might move them in and out of the center position, depending on whether you're listening or viewing.What you should hear is a focused "phantom center" that renders the overall soundstage more cohesive. This may help ameliorate the adverse effect of the love seats (they're not really that effective as first-and-second-reflection-point absorbers, since their mass and length kill too much reflection rather than randomize it).
Re the foam absorber beneath the screen: I'd get rid of it in any event. A lot of experimental listening has convinced me that the midwall center requires a combination of absorption _and_ diffusion to preserve natural liveness while dealing with undifferentiated straight-on reflection.
Jim
http://www.geocities.com/jimtranr/index.html
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Follow Ups
- One other literally off-the-wall possibility. - Jim Treanor 15:24:07 03/31/07 (0)
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