System that sounds so real it is easy to mistaken it is not live

I think Mr Volti was a furniture maker before he went into the loudspeaker business.  His cabinet work is certainly first rate.

@rauliruegas , That Evolution sub is absolutely nothing special and will resonate it's a-s off. The only subwoofers that have a prayer of performing at state of the art levels are those with a balanced force design. This is the only way to neutralize Newton's forces and keep the whole affair from shaking. After this subwoofer performance depends entirely on the construction of the enclosure which has to be absolutely stiff and non resonant. I have figured out how to do this in a small attractive package. Laugh all you want, the last laugh will be mine.

The physics of line source and point source speakers are well know and not a theory. Your system has a fractured radiation pattern and will sound correct and image properly at one single distance assuming no significant room interaction then they will not sound right or image at all. 

Scintillas are perhaps a little less fragile than Divas because they do not have a 1/4" tweeter. But the high frequency ribbon rapidly becomes loose and "flappy" The woofer can be dented with a light touch. They were also responsible for destroying more amplifiers than the Divas. The company did not last long because of these problems. Properly driven Acoustat 2+2's, where a much better speaker overall and virtually indestructible. 

The only SL speakers I fully support are the ones that are floor to ceiling. The shorter versions like the A1s have the same problem your speakers have. They are line sources at some frequencies and point sources at others fracturing the radiation pattern and causing room interaction at exactly the frequencies you do not want it, the mid bass and down. Floor to ceiling ESLs are way more powerful and no other speaker in existence can project a realistic life size and exquisitely detailed image. No point source speaker can this and the multiple driver line source speakers like the Near Field Pipe Dreams have uniformly been awful.

Dear @mijostyn  : I'm not laughin of you or any one else, that's is never my attitude.

Some of the subs I named comes with that balanced forces that you loved even one of them comes with four woofers.

My subs does not shake as you said and as my ADS are internally painted with the Acoustical Magic antivibration blend.

The internal bracing was not my original idea but I took when I had to ask advise to the ADS self designer on something about a little change I wanted to do, he told me that I can't do that change but ( he continue tell me. ) what you can do to improve the ADS whole performance is to bracing both woofer inside " boxes " and I did it and he was so rigth about and from here I did it in my " infamous " subs.

And you know what? My " infamous " point source ADS and subs performs awesome.

With all respect I don't want to follow talking with a gentleman  that is so " entitled " to subs but at the same time was unknow the main target to use subs in an home stereo system ( @lewm  , including your SL. ):

this is wat you posted and my answer to you:

"" When dealing with a dynamic speakers it will only be the range of the woofer that is cleaned up. ""

Not really because when you cleaned up the woofers and lowers its IMD then the mid-range and high frequencies really shines as never before due that the woofers " dirty/trash" harmonics already gone ! ! and this is the main issue/target about. Obviously with other additional advantages.

R.

Dear @lewm  : I had the opportunity to listened the IMF speakers that were transmission line design and I always ( even today ) remember that " dreaming " kind of bass range quality performance. Extraordinary.

R.

@rauliruegas just because a sub is a balanced force design does not necessarily mean it is going to be good. It depends on the quality of the drivers and the construction of the enclosure. All internal bracing does is change the frequency of the resonance. Play a 20 Hertz test tone at 90 dB and not only will your sub be shaking but so will the whole house. There is no coating you can put on a sub that will keep this from happening. There is no subwoofer enclosure made of MDF that can perform at the state of the art. 

Next using a subwoofer with a two way crossover under a 3 way dynamic system will relieve the system's woofer from taking long excursions which will keep it in a more linear zone of operation lowering distortion and Doppler effect of the woofer. If any of the woofer's "upper harmonics" are getting through to the rest of the loudspeaker someone really f-ed up on the design of the woofer to midrange crossover. In which case I would toss that loudspeaker and buy another one. 

The reason that using a subwoofer under an ESL is because there is only one driver thus, keeping it from taking long excursions cleans up everything and allows it to go VERY LOUD. And because it is a full range line source it sounds VERY BIG just like a real rock and roll concert. 

Raul, I have been building and designing subwoofers for 40 years. I think it is also pretty obvious that I am very talented cabinetmaker with enough equipment to open a commercial shop. I am building what I think will be the worlds finest subwoofer. You could at least wish me good luck.