Originally Posted by Arqen
Fortunately, we've resolved the earlier issues with the shallow diffuser designs in this thread by mounting the modules at different depths (as shown in the images above posted by unqlenol and I). So, I should clarify that you CAN achieve great performance with the designs in this thread, and they are simpler to build than the big stepped diffuser you've built.
But in your particular case, I think the N = 36 stepped diffuser was a great choice because it fits in the space you have available better than my modular designs would have, and it has better low frequency performance because of the extra depth.
Glad to see you've built it!
I did look at that N36 and think 'hell, the performance chart looks good, I should build that!'. But then I started thinking about the construction side and thought ' hmmm, in my case I would be willing to sacrifice some performance in the name of lower cost and construction complication'.
The n36 also would not fit in my space as is.
I will probably go with my low profile option for these reasons:
1. Very decent MF and HF performance
2. Especially cheap on material due to 6mm ply (not 10 or 12)
3. Minimum listening distance is very forgiving for smaller rooms.
If I were
to make the N36 I would go about it in one of two ways:
1. I would plot the design on paper and take it to my local hotwire company and they would simply cut the whole thing out from one giant block of EPS. Then I would prime it well with an appropriate water based primer and finally paint it with many coats of polyurethane paint (safer to use water based polyurethane paint btw but not as hard as solvent based poly paint).
The above way is just drawing, measuring, paying and painting.
2. If I wanted wood, what I would do is: I would STILL cut the whole thing from a block of EPS. Then I would have all the wooden plates cut by a company that does CNC cutting. Then I would glue each plate on to the EPS with cold glue. A big blob of acrylic caulk on either side of each plate would keep the plate fixed to the eps while the cold glue dries.
Effectively the EPS would be like a docking station for the wood. The EPS measurements would have to also take the 6mm side plates into account!
This way is pricier, but I think it could be effective.
Either way I think its awesome that Rez built that. Looks great!