After years I asked the Schalmei into the listening room with DX2, compared to the new Sousaphone with extra castors because the Schalmei does not tolerate a loudspeaker next to it. The Sousaphone is great ..., but the mid-tone spatiality of the Schalmei cannot be topped, my recommendation for Lowther fans, Schalmei with DX2, DX3, or only PM6C should be tested, the bright tendency is retained but only with higher SPL audible, the special thing is the extremely low diaphragm movement, less than in the sousaphone? In the impedance one could assume a built-in subsonic filter. A great combination with the alphorn. First i thought it is the DX2 silver the brightness is OK but it is the normal DX2.
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I cannot make out from the 2 pictures how these speakers work. A description with diagrams would help me see the principles of the design.
It's a kind of oldkool double backloaded horn with a restricted end opening. I can see the logic behind it but i don't think it's the perfect solution for working with those drivers. But it seems that lowther users like those kind of complex horn systems...