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In Reply to: RE: Here you go posted by JBen on July 12, 2017 at 09:52:57
Thanks.
Re openings in the "wings" are a practice from other dipole speaker makers including Genesis Nola and Legacy. Though I don't know how these are designed to do their jobs but that they are there for sustaining the dipole null and its contribution to the acoustic roll off and the positive effect on clarity due to the elimination of the air spring behind a thin diaphragm driver by those vents.
Follow Ups:
I should point out that Janszen ESLs do incorporate an air spring in their ESL designs where the panels are loaded by an enclosure. They extol the lower distortion this produces vs. open baffle ESLs but are criticized for slightly lesser detail and clarity compared to dipole ESLs.
Similarly, VMPS loaded their planar drivers with an enclosure in all but one design for the same reason and have a bit less clarity and detail because of this - my observation.
Finally, the Neo3 tweeters have far less distortion with a closed cup, but lose some of their "magic" when applied this way, vs. dipole operation.
LOL, as soon as I saw "Nola", I remembered the side openings on the Nola Baby Grand Reference I heard a few years ago, though they are fully rectangular.
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