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Sample Waveguide - ST260Type: Free standing, axisymmetric rolled-back
Dimensions: ⌀260 mm x 83 mm / 1" throat (19° opening angle)
Available STEP and STL files | ABEC Project
Note: The profile is not part of the CE series. This is a freely available predecessor with a somewhat higher DI. The smoothness of the acoustic response is nevertheless very similar.
BEM results - free field simulation (Ath standard gnuplot report) :
Full-space polar map (0 - 180°; created with VACS):
Some practical realizations of this waveguide, including acoustic measurements: