Tekton Double Impacts

Anybody out there heard these??

I have dedicated audio room 14.5x20.5x9 ft.  Currently have Marantz Reference CD/Intergrated paired to Magnepan 1.7's with REL T-7 subs.  For the vast majority of music I love this system.  The only nit pick is that it is lacking/limited in covering say below 35 hz or so.  For the first time actually buzzed the panel with an organ sacd. Bummer.  Thought of upgrading subs to rythmicks but then I will need to high pass the 1.7's.  Really don't want to deal with that approach.

Enter the Double Impacts.  Many interesting things here.  Would certainly have a different set of strengths here.  Dynamics, claimed bottom octave coverage in one package, suspect a good match to current electronics.

I've read all the threads here so we do not need to rehash that.  Just wondering if others out there have FIRST HAND experience with these or other Tekton speakers

Just my 2 cents since I have experience with both. You won't find any improvement (at least to my ears) over the Nord One Up with the Lyngdorf 2170 minus the room correction. It should be mentioned there were some speakers that sounded better without room perfect. The effortless power of the Nord amp gives it an iron grip with most speakers. I did find the 2170 to be easier on the ears at lower volumes though. Pairing the Nord with a quality tube preamp can eliminate many undesireable issues. I have a friend using one with an EAR 868. Devialet does a great job of making a Class D hybrid amp that retains the qualities you mention with your monos. I went from the Lyngdorf to a Devialet D-Premier and the difference in sound quality was not subtle. I personally preferred Pass Labs and ModWright with the Double Impacts but that's just me.
At $16,000 the Devialet D-Premier should sound better than a amp at $4,000 -5k
Thanks for your input James.
James, did you use the 2170 as a total system or do you use an outside dac, amp, or preamp? Thanks. 
As a total system. I did on occasion use it as a DAC if I was in between gear swaps or just playing around. All I learned from that exercise was keep it as a complete package. One speaker I really loved pairing it with was PSB T3's. After room correction it provided such a perfectly balanced presentation from top to bottom. 
Spot on James as I also learned the 2170 sounds best all on its own. Goodness you should hear the 2170 with the upgrade I outlined.