(21-03-2013 10:01)doom писал(а):  там нет фазоинвертора.Там сзади просто круглый порт.Внутри очень хитрая трансмиссионая линия.Внутри стенки пропитаны каким то интересным составом

Речь идет о канале между предрупорной камерой и самим рупором - именно там и спрятано это хитрое устройство. Вот ответ разработчика этой АС на форуме http://www.diyaudio.com/forums/multi-way...que-3.html

VFlex is not patented and never will - at least not from me.
I designed two models with VFlex (actually a whole lot more, but only two we're brought to market and a third one coming in a few weeks). One model uses the Fostex FE108Sigma, the other model uses a SilverFlute 6.5 inches and the upcoming model uses a special Accuton driver.
The model with the lowest bass response is the one using the small Fostex. I measured the Fostex at the NRC anechoic facility and the 20Hz output was down 3dB relative to 90dB reference level. I - and numerous other - was amazed by the results and the speaker is truly impressive for what it is. The key to the design is getting the ripples at the right place and using only the part I wanted by designing an acoustic bandpass filter in the horn mouth (refered by some reviewers as a reflex vent).
I know that the Fostex 3 in. membrane is too small to move enough air. In fact, it doesn't move air but is used as a piston to power the horn/TL hybrid. This creates large ripples below - some I want and some I do not want. I chose to keep the first two ripples and get rid of the rest by carefully positioning a "vent" which acts as the bandpass (or lowpass in that case).
Common wisdom says ripples are bad (and I agree). In the Vflex, I chose to keep what I liked about the "bad" and get rid of the nasty, as my big-picture goal was good music reproduction.
The result is impressive bass performance and extreme loading to the cone, restricting movement and allowing the small Xmax to work in the design. I do not know where the 100dB SPL figure comes from, because it just can't be.