Acoustic treatment question: do you agree with Dennis Foley that $46k to $65k is required?

@brownsfan  I agree about the weirdness of "fiberglassophobia."

For someone who is ostensibly a scientist and/or engineer, this scare tactic (which he dwells on) is very problematic. Clearly, if people believe him, they have to go with his (non-toxic) alternative which, by the way, is supposedly better acoustically as well. And, more profitable for him.

At the end of the day, are his products effective? Are they better? Well, maybe, but either he is honestly misinformed about fiberglass (which speaks to a deficiency of knowledge) OR he is intentionally misinforming others to sell products. Either way, it has a bad odor.

16.5 lbs/sq. feet, yes they are heavy. Look really peaky though. Lots of absorption at 50Hz, lots at 250Hz. Not a lot anywhere else.  Better hope you nodes are there or you may not get what you want:

https://acousticfields.com/wp-content/uploads/2012/01/ACDA-12.pdf

These are ridiculous numbers if you need that much money on treatment you are using the wrong kind of room for your system. A good room will need very little treatment if any to sound wonderful and it is usually pretty easy to find a decent one in any normal floor plan house.

A good room will need very little treatment

I am not by far an acoustician and i speak only from my experience in my room...

The change induced by acoustic passive and active treatment and controls are so huge in SMALL room, that there exist probably no small room that will not benefit from them...

The decisive point is what is a small room and a big one? Reverberation time flows are key...

The reason why people think they dont need now treatment neither controls in their small " good" room is because they never lived the experience of total transformation of the S.Q.before in their audio live...

If you have not live it you cannot imagine it....We are conditioned by the market to buy speakers and thinking they are good or bad in themselves by virtue of their design and this in ANY room...This is completely false... Speakers change dramatically in different room...

I will repeat that give me almost any speaker i can make it sound great in a good room adapted to it...

Give me the best speakers there is in a bad small untreated and uncontrolled room, they will sound bad or at best not very good....

 THis is only my opinions after my limited but very real experience.... I dont think that any acoustician will contradict me....

I have been using GIK products and have made use of their free advice as well. My experience has been one of gradual improvement as opposed to an all-at-once treatment. I can say this: something is better than nothing and I haven’t found ‘too much’ yet, though I certainly believe it is possible. 

Once I put in bass traps and took care of direct reflections from walls and ceiling, I added diffusers towards the back of my listening room, which, given the other improvements I’d already enjoyed, seemed remarkable. 

The main thing here, if you’re not doing some kind of professional room sound analysis anyway, is to try to fix the biggest problems first, and only then go after those smaller issue that remain. I don’t think one needs to spend a fortune.