The technology is very valid here. Same as what Dunlavy was doing 30 years ago. Time Aligned.....6 db per octave crossover with very little parts (so reasonably in phase).....and very good drivers. I am sure they sound as described. However, as stated above as well. This is nothing new and you can build such a system for practically zero money......however, that does not mean that these speaker are not great.....and great for the money. These are different things. My own speakers are like the 100s he sells. I use a woofer with no crossover and a set back time aligned modified tweeter on top with just a super cap and super resistor on it. Very transparent.....$45 woofer and $25 tweeter. Would blow your mind if you heard it.
BTW.....cryoing the xover parts and jacks would improve the sound even more.