Open Baffle. Why are they mostly limited to DIY?

@kalali  Thanks for clarifying. Appreciate it.

So here is a "no risk," return it if you don't like it, $450 chance to try an open baffle, full range driver, no crossover loudspeaker that got a pretty good review.. (watch steve deckert's video midway down the page

http://www.decware.com/newsite/Caintuck.html

http://v2.stereotimes.com/post/caintuck-audio-betsy-openbaffle-loudspeakers

Yes, I decided to go DIY with OB subs in order gain fill-in from an open floor plan. So, no corners for my main speakers. In my case, speaker distance from my front wall was not an issue, so the subs are over four feet out.

As bdp24 mentions above, I went with the GR Research/Rythmik solution, and I used Jay (captainhemo) who offers the cabinet kits. I had him assemble mine, because he also had the veneer work done and finished for me to match my main speakers. Not just great sound that solved my issue, but I love how these OB subs look, but realize that's subjective. I will be adding grills as I'm trying to pull off a sixties British/American look (LOL). I have construction and finished pictures in my system's page if anyone is interested.
Kenny

The Gradient OB's have been available for some time! I recall they made an OB woofer for use with Quad ESL's.

Correct roberjerman, Gradient made dedicated OB/Dipole subs for both the Quad ESL63 and original ("57"), which doubled as stands for the speakers. The GR Research/Rythmik is similar in basic design and style, but quite a bit more advanced. Better designed H-frames, higher-quality drivers, and more powerful plate amp. The amp also contains not only Brian Ding’s patented Direct Servo-Feedback system, but also a dipole-cancellation compensation shelving circuit, which corrects the front-to-back cancellation (and resulting loss of output with declining frequency) endemic to all dipole speakers. A brilliant design!