Speaker recomendation

Soix why you are on to something. Actually the ATC SCM 100 would do it, however this pair is as old as the hills. 

The ATC actives play loud as hell they are used in recording studios. and the 100 sound pretty big, this pair would have 10 year old amplifers or older which are not as good as the current versions, also I think the current ATC SCM 100 ASL use an in house tweeter. 

However even considering the size of the woofer I don't think the 100's go that deep. 

Logoler should listen to the active Dynaudio's and see for himself. They are very nice loudspeakers. 

Dave and Troy
Audio Doctor NJ

For what its worth, I just completed an extensive in home double blind a/b test of the Ascend Acoustics Sierra Towers with RAAL against the Bowers and Wilkins 702 S2. My results can be seen in full on AVS forum. I chose the B and W in the end. For Jazz and all the B and W would really be good but sounds like your budget can accomodate something better than this 3-5K range.

there always seem to be some very nice Meridian active gear on trade in as owners move up the line..check in with some of the  bigger USA dealers, you might be stunned at what is available 
Stereo Design in San Diego always had 2-4 pair before owner retired...

WOW, SOIX I feel you bro. I used to sell chevy but started selling ford because IMO they're a better value. Unless Dave and Troy really aren't salesmen and devote their time as a mission of mercy saving audiophiles from the perils of disenchantment <(whatever that means). I for 1 will probably never listen to legacy or tekton speakers after all the trouble those two brands have caused here. I may be missing the best sound in the world, don't care! just drop it. 
OP $15k for speakers is not value shopping! In fact $5k spent wisely might be enough. Coincident Super Eclipse towers are ancient but very efficient and for jazz will put you in the room! google Holm audio. I bought a pair of Salon2's used so if they didn't work in my room I could resell at minimal loss and for a few weeks I thought they were going to go, but the cardis website speaker placement page saved the day and I think these have a home here. Sonus Faber and Vienna Acoustics also do jazz exceptionally well. Legacy, VMPS, Golden ear, Tekton D all boast value for the money and deliver it which is why at $15k I would step away from the budget table and look around because there's soo many no compromise speakers at 5 figures to choose from and I love Dynaudio's sound but i've read others complain about the bass? sounds like a room issue to me but you won't know til they're in your room. If you can spread the speakers wide apart some used Raidho's would be on my short list, I find Kef to be a bit conservative in the bass for my taste unless you go all the way. I thought i'd dislike Wilson at Azpona but they, the Sasha and Wamm sounded really, really good. Buying speakers without an 'in home' audition is like throwing darts blindfolded and throwing more money at the speakers will probably make it worse as they will just be that much more finicky to get the best out of. Threads like this tend to go like this because we all prefer different things from our system and nobody likes to be wrong, especially in this hobby where mistakes can cost thousands. Good luck, audition as much as you can regardless of price, give yourself at least 6 months to decide and ENJOY.    Steve