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I am wondering if anyone has heard both of these? I have read lots of raves about each of them, but the radians are, I expect, a lot cheaper (not having been able to find prices of the mangers)
The radian driver i am not familiar with (that company used to make compression drivers and replacement assemblies) with but the Manger is not like a cone transducer which has piston motion. It is a bending wave radiator where the round propagates in ripples from the center outward and is progressively absorbed as it reaches the edge termination.
In the time domain, it stands out as the best loudspeaker i have ever measured, it really was amazing, easily reproduced a square wave across a wide bandwidth.
The down sides were that at 1 W input power, harmonic distortion at 200Hz was significant and went up with increasing level and decreasing frequency.
It has variable directivity, in other words, like a curved wall horn, it narrows the radiation pattern as you go up in frequency, which doesn't matter for one person but could for a listening couch or larger audience.
Are you going to build something?
The Mangers are not sold in Australia so I have not heard them but I came across this review FWIW.
They are a completely different technology aren't they? :/
They are a variation on existing PM speakers. i.e. Use of neo magnets and a variation on cone tuning method.
PS. The above review mentions Euro700 apiece.
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