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In Reply to: RE: Does any one know if the out of patent Heil waveguide is being produced and sold? posted by firstname.lastname@example.org on June 03, 2017 at 07:39:11
The picture does remind me of the Beyma driver in the link.
The Beyma´s external appearance is similar but the internals are diferent. The Heil waveguide is the only one that converts the circular output of a compression driver into a true planar wavefront for linear array use. All others Aproximate a true flat wavefront up to certain freqs. Surprisingly althought out of patent x 5 years it appears to be not yet mass produced !!!
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