August 16, 2017
i plan to use some diffusion on the rear wall but have limited space between my listening position and the rear wall,probably about 3 feet.
Which prime number QD would be most suitable,are the QD7 and QD11 considered near field diffusers or is that something entirely different?
Once decided which prime is best could i ask would two of these on the rear wall be adequate for good diffusion?
Any tips or advice appreciated.
Dennis Foley said
K, You can use the QD – 11. Start the diffuser at 24″ from the floor and extend across the total rear wall surface.
HI Dennis, if K only has 3 feet from back wall to listening position, the QD-11 required calculations are 1132/375 = 3ft, but you mentioned to add another 50% (+1.5) totaling 4.5 ft to develop correctly… has your calculations changed? could it be actually possible to have a QD-11 with only 3 feet apart from listening position and do we need to compensate another 9.5″ for the depth of the actual diffuse box? Thank you in advance!
Thank you for the response Dennis, I also have 3 feet from listening position to wall in a small room… I was debating wether to build a QD-7 but after reading this I think I will build a QD-11, and hope it works! :) any further insight or recommendation will be greatly appreciated !
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