There is no such driver with cone that exhibits no break-up, and B&W Kevlar midrange drivers are ringing like bells.
There is a very valid reason why PMC, ATC and majority of professional monitoring companies use heavily treated and damped textile/paper materials in midrange drivers for example.
Attempts to achieve near ideal piston behavior with materials such are Kevlar or carbon fibers for example come at heavy price, such drivers unquestionably ring, what can be controlled to some point with complex cross-overs what again comes at heavy price.
The end result is compromised performance, it is not a question of “style” but design, engineering and marketing.
The kevlar material is the most rigid material in cone driver u can get. Speaker break-up is a form of distortion and doesnt exibit a "ringing" sound. Again if u dont like the sound of kevlar thats cool, but B&W are notoriusily low on distortion. Also a very acquired taste.
Sasha post your gear, I am curious
Gear is in transition now, last time the system was complete, it consisted of:
PMC IB2s – sold, will build speakers, parts on their way.
Bryston 7B SST
Bryston BP 26
Wadia 581i SE – sold, replaced with BDA-1 and PC transport
PC transport, Zalman fanless case with heat pipes and radiators, completely tuned up HW and SW-wise for single purpose of being digital source (e.g. I do not even do ripping on it but on a different system), Lynx sound card
For standard optical transport I am yet to determine what I will use
EquiTech balanced power conditioner
Interconnects VDH/Neutrik balanced whenever possible, otherwise AZ Matrix II and Silver Reference
AZ Satori Speaker cable – sold, replacement TBD
Bunch of DVD and universal players of various quality
P.S. I hear ringing in every B&W speaker, I get a headache within 15 minutes of listening to female singers on B&W.
Same is true for literally every speaker I heard that uses carbon fiber in midrange cones.
To higher or lesser extent I hear metallic kind of ringing on every speaker I heard that uses some sort of metal material in midrange cones, especially aluminum ones, cannot miss it.
The only speakers of dynamic type I heard that are capable or reproducing uncolored midrange always use some sort of natural dampened materials, examples being PMC, ATC, Rockport to name a few.