Best Loudspeakers for Rich Timbre?

IMHO, Audiokinesis has added more useful insight into the attainment of true timbre than anyone else. Sure, it helps to have a "rich timbre" speaker to begin with, but despite all the evidence and professional agreement, the average audiophile refuses to work the room as advised by Jim Smith and so many others. What percentage of audiophiles have dedicated 2 channel listening rooms with no flat screen in between the speakers, room treatment on the walls and ceiling at first reflection points, and loudspeakers placed well out into the room with best sound as the only criteria? 2%? Then add having the equipment rack to the side rather than between the speakers and elimination of parallel sidewalls and you come down to what, .01%?

Right, music has to be enjoyed in our shared living spaces. No way acoustic panels and such will ever be in our family living space/music room.  Just not going to happen. Same with speakers 7 feet off the wall behind them etc....not at all practical. However, one can still have good sounding music in that space. Today folks like a Lyngdorf offer SOTA room correction that helps a great deal. 

Well, I do have the dedicated listening room with sound treatment on the walls and ceiling at the first reflection points and corner traps. I have sound treatment on the front wall between my DeVore 0/93's. My speakers are positioned for best sound well into the room. I do however have my equip rack up against the front wall. The prospect of long speaker cables snaking around the corner of the room from the side (I use Cardas Clear, not cheap) is just too daunting. And I have a room with parallel walls because once again, I am out there but not that out there. For those that can afford to configure a room with non-parallel walls, good for them. They are at the margins of the margins. 

While I currently have a dedicated listening room 25X20X12.5 built 25 years ago, I built it wrong with a vaulted ceiling, windows, staggered 6" studs on an 8" plate and dual 5/8" X drywall. Yes, my wife can sleep through 100db sound at night but the inside sound suffered.  My Legacy Focus speakers are 6’+ from any wall and I use 2 pairs of Hallographs for 15+ years and added 32 SR HFTs to correct for slap echo and lack of focus. No bass problem though.  Before the tweaks, my listening room sounded bright and unfocused. Now, resplendent with horn-like dynamics and smooth 35hz to ? extended highs, captivating mid-range.  It didn't hurt to add Omega E-Mats.

I am about to build in my new house, a new listening room but following the principles of first addressing bass absorption where the fundamental notes and mid/high overtones begin (and I’ll save a lot of money).
I intend to follow Dennis at Acoustic Fields recommendation of a dual shell building, ordinary on the outside but with carbon filter panels on a 12" deep interior shell, using birch plywood on the inside surface. Flat 12’ ceiling also treated. This is based on modern sound principals and not my guessing. A turnkey procedure to obtain even better sound than I have now from the start. Basically, the Cardas Golden Rule is not golden and non-parallel walls are so much more difficult to engineer probably using physics. Most audiophiles mistake using home theater, studio and orchestral hall physics and dimensions for use in dedicated 2 channel listening rooms. I don’t want to make that mistake.

Frequencies and Sound Explained #4
Harmonics and Harmonic Distortion

https://youtu.be/FzeZbJceKZE

Interesting Youtube clip on harmonics. I had to watch it a few times before it made much sense.

It seems as if all sound is composed of fundamental notes which also have harmonic counterparts occurring at higher multiples of the fundamental frequency. Its these harmonic counterparts that help identify timbre (tonal colour).

I guess some might find the narrator's findings on tube and transistor amps problematic - but the situation seems even worse when it comes to loudspeakers. It looks like no one even attempts to measure %THD (total harmonic distortion) - not even in high end designs!