Horns and Waveguides

All horns tested with B&C DE250 unless otherwise noted. Screw types use what appears to be a Selenium metal adaptor. All were EQ'ed to be mostly flat in their nominal passband for easier comparison. The EQ used is typically a cap and shunt resistor. SPL measured at 2m, with a 5.5ms gate, no smoothing. Polars in 7.5 degree increments, 0-67.5 degrees.