Originally Posted by tumdrum
It's a control room for mixing. This sounds like a stupid reason but, I figured dispersion on both planes would give me a better result than on 1 plane. No reason really, I just figured it would be more beneficial.
are you emulating any particular response?
are you planning to attenuate high-gain early arriving indirect signals (reflections) and then presenting a later-arriving semi-diffused sound-field via the rear wall diffusers? if so, it is more appropriate to use 1dimenional
diffusers with the wells oriented vertically
such that the spatial dispersions take place in the horizontal
plane (to induce lateral
arriving returns). 2D diffusers are inherently more lossy and will disperse energy to the floor/ceiling of which is not entirely useful in such an application.
what is the distance from listening position to rear wall? it is best advised to allow 3x wavelength of the design frequency as minimum seating distance to the diffuser. eg, a QRD/PRD with a design frequency of 400hz (2.825ft) would require minimum seating distance of (3 * 2.825ft) = ~8.5ft ... which puts you in the "far-field" of the returns.