When Michel started Davis, he was one of the first (with arch rival Mahul...) to try Kevlar and carbon fiber cones.
I have never been convinced to use kevlar for midrange drivers, as I find them pretty dead. I could use carbon fiber for woofers, but never did, mainly for cost reasons, as paper woofers would mostly do the job and be almost half price at the time.
I also think - and this is a very personal view - that most driver manufacturers are not necessarily the best at making good speakers, and Davis fell into that category, again in my view, for a long time.
But walking into their suite at the show, changed that opinion within seconds.
Obviously the Karla is no ordinary speaker; it is a 3-way, 4-driver contraption with a 93db sensitivity, 25Hz to 35KHz frequency range, in a twin enclosure.
MV is using Kevlar drivers for midrange and tweeter, and carbon fiber for the bass.
Interestingly enough, the cut-off frequencies of the filter are 90Hz and 4KHz, my favourites ones, as it gives a chance to the main part of the spectrum to be reproduced without any phase distortion.
I guess this is one of the reason why this speaker plays music, rather than being a high-end hifi speaker. I stayed quite a long time, listening to a very good demo.
It was quite touching to see Michel and his wife sitting at the back of the room, gently (dare I say, lovingly...) watching their two sons running the show...
Quite a refreshing sight...and sound!
The Karla costs 15,000 euros, again in the range of the Elipson 4260, and the Waterfall Niagara.