t.akustik Diffusor Manhattan eps set

I bought 18 boxes. First and foremost they are very time consuming to build anything beyond 1 or 2. The pattern should be ABCDEFGHIJ but it is nothing of the sort sadly. It became a bit of a nightmare to build so many.
They work quite well, but are much less dense polystyrene than other products on the market and therefore are a lot more prone to damage, and therefore less accuracy in their acoustic purpose.

I would recommend some to break up the diffusion patterns of other products as you shouldn't have more than a couple of one pattern in a sequence. I wouldn't recommend buying many of these for the above reasons.