Most rooms don’t need acoustical treatment.

Junk Science.

Read Helmholtz before writing stupidity without explanation in audio thread....It is no more advanced science now it is simple experiment for children....What is you age?

The good news if you are young, writing your  graffitis on the walls of audio thread, are you could always learn something in the future....The bad news if you are old is: it is too late, go on with your graffitis.... You perhaps will be lucky and some will call that "art" or "thinking".... Not me....

I agree 100% with calloway. I thought I had a "good room". I have the SR Wide angle HFTs, HFTs on my loudspeakers, and the SR Black Box. I have a dedicated (15’ x 22’) room with 9’ ceilings but it has an open back wall to the kitchen and eating area. I sit 8.5’ from my speakers. When I installed two Stillpoints Apertures near the side wall reflection points, I couldn’t believe the improvement. Adding two additional Stillpoints Apertures on the front wall was equally effective. I’ve had friends over that have heard my system before the changes and they can confirm all of this. Believe me, almost all untreated rooms sound terrible.

Believe me, almost all untreated rooms sound terrible.

Right on the spot....

But even  if i dont doubt that all HFT are  very good, we can do it ourself at no cost with basic acoustic science... I know, i did it myself.... I say that for those who cannot afford to bought them, not to denigrate good engineering....

Having the money i would have probably bought them... But i did not need them now....

This post should be called “most people don’t use room treatments but they should”. The room is the most important piece of the puzzle on putting together a great sounding room. Book, furniture, etc... are not replacements for a true absorption panel or an actual diffuser. If you have a dedicated room you must treat it correctly to get the best out of your equipment. If you have cheap stuff then it won’t matter much

+1 Millercarbon (best point)

Yes, and no. Past a certain point, the nuance any given system may behold can be more achievable with focused attention on surfaces and corners where treatment could be of considerable benefit.