Dennis seems to have knowledge. I spoke with him once about my room - he basically said the dimensions and layout are both unfixable ("Don't bother trying to fix it, buy a different house."). His systems probably work quite well. Maybe the cost vs effectiveness is merited in some instances for some people. I suspect there are diminishing returns at play, and like most endeavors, 80% effectiveness can be achieved with 20% effort/materials. I plan to do what I can with my room using panels from Music City Acoustics - they sell a whole studio kit for $1500, and that's probably what I'll use (no affiliation - not even a customer yet). That and the right choice of speakers (LXmini and Martin Logan e-stats aren't arguing with my room) and Dirac. So, I'm addressing room interaction from every aspect; speakers, DSP and treatment - to lessen the burden on each. Will it be perfect - probably not by Dennis' standards; however, for the fraction of time I spend critically listening to music in that space, it should be plenty. For those who are spending $80k for room treatments... if you have the cash (or business need), go for it! If I had $80k laying around un-invested, I'd buy another Porsche - to each their own.
Acoustic treatment question: do you agree with Dennis Foley that $46k to $65k is required?
In a video from 1/29/2021 (yesterday) Dennis Foley, Acoustic Fields warns people about acoustic treatment budgets. He asserts in this video that treatment will likely require (summing up the transcript):
Low end treatment: $5-10k
Middle-high frequency: $1-1.5k
Diffusion: Walls $10-15k, Ceiling: $30, 40, 50k
https://youtu.be/6YnBn1maTTM?t=160
Ostensibly, this is done in the spirit of educating people who think they can do treatment for less than this.
People here have warned about some of his advice. Is this more troubling information or is he on target?
For those here who have treated their rooms to their own satisfaction, what do you think of his numbers?