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Manger Audio Loudspeakers. Has anyone listened to these?

I am particularly fond of full range loudspeakers. I am not terrifically fond of whizzer cone designs because to make them work you have to decouple the main cone from the voice coil at high frequencies, a mechanical crossover.
As I understand it, the Manger driver is a flat Walsh driver. It will cover 120 Hz to 40 kHz! This will just make it down to subwoofer territory. Other full range drivers include Cube Audio and Fostex both of standard construction and both decouple the voice coil from the main cone at higher frequencies. Is this really all that bad or can it be done maintaining high fidelity? I have not heard any of them. Both the Manger and Cube drivers are very expensive, in and around $5000 for a pair. So, I can not afford to experiment. The Fostex is cheap in comparison but it looks well made and specs fine.
I plan on making a pair of open baffle "full range" speakers crossing to subs in and around 100 Hz. Which driver to use?
128x128mijostyn

Showing 2 responses by larryi

larryi
3,758 posts
 
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
3,758 posts
 
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.  
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