For me the bottom is perhaps the lesser of two evils and the top is just more fantastic. I do have an advantage/disadvantage of knowing the speaker amp combos involved now watching so I am trying to factor out expectation bias but there is a quality of the ‘not completely natural‘ that comes with carbon fibre and composite materials for me at times. Acrylic can be overt in this quality.
The centre of the signal can be startlingly resolved and highlighted. A highlighted cleanness and zing to the clarity overall, then there’s a slight disparate fullness at the lower edges of the signal and an emphatic gleam on the top that then trails away kind of exponentially to a damped blackness. Tbh my language isn’t really up to capturing it but holistically it is just not for me evenly resolving and there are shifts that bow and flare up through the layers of frequencies that make rightness elusive.
Resolution seems higher on the top video hence the earlier correlation with horns and yes while the tick box in criteria shows in the favour of these but holistically there’s some taint of synthetic still in both. It shows for me as a disconnect through the layers of the frequencies with a slight emphasis in the top and the bottom frequencies that makes these more pronounced and just a shade or taint of some kind of subtle plastic fantastic. The way light seems to pass through acrylic changed more (or differently) to the way it passes through glass.
I think you have got it.
I don't know either speakers or amps My first reaction on playing the bottom after the top was that the bottom was damped and showed a bit less energy. After listening to both a couple more times I agree with your comments about the frequencies and your "not completely natural" / "taint of synthesis" observations. The more I listened, the more that bothered me in a can't-quite-put-my finger-on-what's-bothering-me sort of way. I'm listening through desktop speakers so never really sure of my video-sonic observations, but for now am thinking the timbre is somehow not right - it does have something of a 'glisteny CGI colors squeezed from a tube' character. I don't know if the tube traps have anything to do with that.
What are the electronics?
edit: I'm not happy with myself critquing this fellow's system through a video