Charles Xavier Thank you for fixing the image. Mr Big I hear you. I'm 62 and the first one dang near took me out. I definitely getting these (the grey is back ordered) they do really well all the way to 4k, so it's a win win. I have 12 panels right now. I know that sounds like a lot. Only three of them are mounted, so I can remove some of the others if necessary. If you have ever listened to Dennis Foley, who really does know his stuff, it can require a lot of coverage. On a side note. I was listening to Steve Guttenberg and Herb Reichert. Man these guys are some of the best audio guys alive. They have so much depth and knowledge, and really do understand that listening to music if far more than just some of the gear we use. Made me appreciate what I have far more than I have been.
Great video with Dennis. His solutions are very expensive, so maybe more pro oriented, but the information is all the same.
https://www.youtube.com/watch?v=42ABushctZQ&t=1s
Excellent and true!! I watch Dennis's videos all the time. Very informative, yes he focuses on studios but we audiophiles can learn from them and do the best we can within reason and budget. Where he is 100% is you have to use acoustic treatments and as many as you can afford, I say quantity (more) over the overpriced ones that can keep many from even trying them. Corners bass traps at $1300 each and you need 2 per corner can be off-setting but you can buy another brand like GIK for a couple of hundred only and they come in sets of 2.
https://www.gikacoustics.com/product/gik-acoustics-244-bass-trap-flexrange-technology/or for a bit more.
https://www.gikacoustics.com/product/impression-series-corner-bass-trap/Then several of the in the key areas around your room.
https://www.gikacoustics.com/product/impression-4inch-bass-trap-diffusor-absorber/And your total cost would be as much as one or two corner panels for "audiophile" branded ones as I purchased years ago. No knock on them they worked but today some 15 years later you now have many alternatives. Like:
https://www.sweetwater.com/store/manufacturer/Primacoustichttps://www.primacoustic.com/series/broadway/My feeling is if you are going to buy gear that is expensive no matter your budget it's still cash out of your pockets that invest in products that will bring out the best of the gear and most of all the speakers you have paid for. As I write this my M3's Shappires have never sounded better, with no brightness, but transparency, no bass bloat, buy impact, textured, tight and dynamics, vocals as real and warm as the recording allows. Horns, trumpets with a bite but also tone and color, and violins, sweet, bite, and the bowing rosin sound, are all there in a dynamic natural way. It sounds so good with the addition of the upper tri-corner panels I could leave everything as it is, but that looks ugly just sitting on the floor leaning against the walls so when my new ones arrive up they go on the walls, he told me this advise, if you cannot use a lot of panels have them from the bottom of your baseboard at least 20" from the base board, the sound builds up higher on the walls and that bounces off the ceiling so try to mitigate that bounce that reverbs around your room. I can hear it now that I am used to what I had before, it's a faint swell of the sound/reverb above my head but straight on in front of me is rock solid.
I must add this I have never seen a company as good as Sweetwater where I purchased my upper corner tri-panels. You talk about customer care, for my small order they called to thank me, give me their call back number if I had questions, shipped the next day, along with the tracking number, and when Fed-X dropped the box off I was shocked, the size of the box was twice the sizes of the product inside when I opened it the bubble wrap they used would and protected a small amplifier all that protection for 2 corner panels. They got my business moving forward.