This must be around ten years or so ago now, but a sound engineer (documentaries and so on) acquaintance of mine told me a tale of a small mastering studio he knew, that had an early set of these speakers and how good he thought they were at communicating the music - sadly the price all but doubles getting them here from the US and I think the product is quite a fair deal for $750pr - those bass-mid drivers can't be as cheap as the plastic chassis/soft plastic coned alternatives other makers often use..
Certainly in this test, the performance isn't so far from what I imagined and I bet there's many a small 'starter' passive speaker setup that would sound great with these floor-standers placed not too far from the wall behind them. Not everyone wants KH80's or similar stuck on tall 'stalks' and most away from here don't have desktop systems with an effin' huge monitor in between
No idea what some panel damping inside could do, or maybe tinkering a little with crossover frequencies if the tweeter can handle going down a little lower (not all can, especially cost-effective ones). I do feel there's a huge danger of wanting to do 'upgrades' on speakers like this and ending up getting something double the price and unrecognisable from the original...
P.S. Thirty years or so ago, TDL launched a cheapskate range called RTL (Reflex Transmission Line) and the middle model was the RTL2. The original version had an Elac made (I think) 6" driver with the small cloth dome Vifa tweeter (Rega and others used it too). Crossover was a four element or so type and these little floor-standers were basically a long ported cheap chipboard enclosure with 'bubble wrap' plastic film veneer, saved as the the RTL bit was a port at the bottom front, fed into a long 'port' which acted as a full width brace across the lower half of the enclosure. They used to sound amazing if a little bright, but it worked for us and our clients and we sold dozens of pairs at £250pr. I'm sure they measured okay too but there is one reprint I have which shows the response is absolutely dire!!! Thing is though, it was easy to get a really nice sound in the home from a more modest system which kept you listening for hours.
P.P.S. Another smallish floor-stander I got on well with at around five hundred quid the pair and got to know how to deal with their 'character' was the Rega Jura. I bet this latter would be a disaster if measured here (the later models are far more neutral), but again, designed for pleasurable listening at home, rather than forensic studio monitoring