I can't se that "waveguide" as a waveguide for a midrange really! If ATC R&D engineers are clever, it might counter-attack the dome resonance... Perhaps the major benefit is to alleviate time alignment by retracting the dome a little?
It woul be interesting if someome could run polar measurements of ATC 75 without the frame.
Zaph's polars of ATC SM75 are nice, but hickup at 4,5kHz could be the "waveguide"?
ATC
It woul be interesting if someome could run polar measurements of ATC 75 without the frame.
Zaph's polars of ATC SM75 are nice, but hickup at 4,5kHz could be the "waveguide"?
ATC
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