Manger Audio Loudspeakers. Has anyone listened to these?

It has been a long time since I've heard the Manger driver.  I liked its very fast attack and clean sound (very dynamic), but, it was a touch "hard" sounding.  Still, it is a very promising driver.  I heard it both with a woofer and as a single driver; it works better with a woofer.

My favorite implementation of a single driver is a quarter wave back loaded horn.  I've heard both a Voxativ and AER driver is the Charney Audio Companion speaker which is built that way, and both drivers were very good (I preferred the AER for its better top end extension).  I have heard some larger full range drivers (12" and 13") and I like them when a tweeter is added on top (the big driver being driven full range while a tweeter protected by a 1st order high pass crossover comes in way on top.  

@larryi , I never heard of AER either. The BD 3 is quite a driver judging by their specs. 106 dB/watt/meter is pretty sick. Take the low bass out of it and you could probably drive it with a 12AX7. $8000/pr is on the steep side though. It seems the Germans really like full range speakers.
I am not crazy about horn loading them. I would prefer crossing to a sub at 100 Hz which will lower distortion and increase overhead. The difference in efficiency can be managed with an input level control on the sub amplifier. The 15 Class A watts you would get out of the Pass Amp Camp amp would make a 777 sound quiet. 

The Charney back-loaded horn is quite a pleasant surprise.  It is a very complete sounding speaker that does not have the midrange peakiness and roughness common to most full-range systems.  I have not heard it with a subwoofer, but, I bet it would work well with a sub kicking in below 100 hz.  

Yes, the AER BD series is quite expensive.  They have a BD 5 which is not even mentioned on their website and I bet it is incredibly expensive.  

I used to be one of the very few dealers of Manger in the U.S. many years ago. Their uniqueness was attractive but I never got behind selling them. Did not care for the sound. Did not think they were very musical.

Something for thought; - - - -  regardless of how the sound quality is perceived by a given listener, and regardless of the fact the it will undoubtedly need a sub-woofer, which is not unusual, pertaining to many speaker designs being offered on the market today, my real concern here would be, availability of dealership interaction, if needed. I may have missed something, but I can only determine (1) US based dealer. That fact alone has sent me in the opposite direction from considering several speaker designs that are quite credible sounding. I certainly don't want to have to factor in accessibility and credibility of a dealer along with a somewhat obscure design/manufacturer of speakers. I had a problem with a very finely reviewed OPERA speaker, some years ago. Very scant representation in the USA at that time. It took many months to resolve the issue, having to deal with a manufacturer in Italy. Just something to think about before " jumping off this particular bridge".  GOOD LUCK ANYHOW.