Ok, I hope this doesn't seem ignorant, but I've had limited time to continue research on this project. I'd like to jump into construction as soon as possible (I have some vacation time coming up). I don't want to spend it still researching.
Thanks so far with the feedback. Everyone's been really helpful. I want to redefine the problem to get better feedback so I can get going quickly.
Redefined problem:
*make a QRD Diffuser
*no restrictions on any dimension (within 6'x6'x2'depth limit); depth is first priority if any for minimization. So, in essence, I want the ideal dimensions (if it exists) for diffuser performance within these modest limits.
*Ideally, have the diffuser dual-serve for low frequency absorption (similar to Ethan Winer's diffuser). However, the project I am referencing emphasizes the build is a LOT easier with the EPS "Blueboard". My understanding is that if this was replaced with fiberglass, I could get a lot more low frequency absorption at the cost of a major construction headache. Is there another way to achieve the same effect. I suppose I could literally put a bass trap behind the diffuser but that would take up a lot of space. Maybe I'm being too greedy. The blueboard route looks very safe.
To summarize, my questions are:
*What are ideal dimensions for diffuser performance within practical constraints (6'x6'x2')? (I'd still like it to be modular where I can use Barker's Sequence)
*Is there an alternative to blueboard that would make for an easy build but also be good for low frequency absorption?
Thanks
