I purchased his all in one designs for like $49.
Currently I am building four QRD17 panels out of cherry wood.
Essentially I have a pile of pretty American grown cherry wood ($2000 worth) in 1/2 and 1/4 thickness hiding under a blanket, awaiting time on the CNC router table.
He really seems to know his stuff, I might be totally fooled, but I’m going with my gut on him being a bit of a guru.
One reason I give credence to him is his low frequency absorber using activated charcoal. I have been to the Genolan Caves in New South Wales, and while there they did say that orchestras do come and record in some of the caves, and something about amazing acoustics for recording etc. It was the mirco pores in the limestone apparently...porous like activated charcoal. To some it may seem a leap.
Anyway he uses activated charcoal in his bass absorbers, that do apparently have certification for measurement.
If he’s not the real deal, he aught to go sell used cars, because he sure has me hook, line and sinker.
The plans I purchased were checked out by my friend who is a cabinet maker (his factory is where I did all the wood work) and it aught to build nicely. I plan on buying his activated charcoal and building his bass absorbers as well.
You’re going to build the treatment into the wall frames and floor joists like he shows? I would love to hear that (and do it). He’s not cheap, but then I do believe with him at least, you will get what you paid for.