Yeah that "voodoo" comment raised my eyebrow. I was expecting some real jibberish to follow.
There was definitely some jibberish about tube connectors in there, but the basic principle makes sense to me and they're only a $50 add-on so for a high end build ill spring for it, no iron/ferrous material, and as low mass as possible.
And sure there's plenty of snake oil out there, but a lot of it is easy to blindly A-B compare, and if there's no discernable difference, then its probably not worth it.
I did try making my own tri-braded cables recently for my XLS, but since i only had enough for one speaker, it made it pretty obvious that the cheap "zip cord" i was already using was better, esp in the highs, there was just better clarity and presence.
But I imagine that with more A-B comparisons i may come to different conclusions.
Even so, I honestly enjoy the exploration & experimentation, and just letting my ears lead the way.
And I'm also a bit disappointed that he didn't give the speakers a better chance, buy rounding over the edges/corners and at least using Noez or a butyle layer under some fiberglass or rockwool.
Cuz I imagine it would respond a bit better in the mids by reducing cabinet resonance and reflections.
I do agree with his assessment of muddied mids, (cuz i have noticed similar issue, but imo only when the bass is boosted to compensate not yet having a subwoofer that can keep up (Rythmik L12 is on its way soon))
In near-field, I almost don't need a sub unless I'm really pushing the music.
That said, i do have to disagree with his assessment of "harsh" when pushing these. They're honestly really easy to listen to, even at loud volumes, esp in larger rooms.