ATH

Advanced Transition Horns by Marcel Batík




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Sample Waveguide - ST260

This work © 2021 by Marcel Batík is licensed under CC BY-NC-SA 4.0


ST260

Device type: Free standing axisymmetric OS-SE waveguide w/ roll back
Dimensions: ⌀260 mm x 82 mm / 1" throat (19° opening angle)

Available STEP and STL files | ABEC Project
ST260/B

Device type: Baffle mounted axisymmetric OS-SE waveguide
Dimensions: ⌀260 mm x 83 mm / 1" throat (19° opening angle)

Available STEP and STL files | ABEC Project

Note: The profile is not a part of the CE series. This is a predecessor with a somewhat higher DI. The smoothness of the acoustic response is nevertheless very similar. Depending on a crossover frequency, it can be used together with a variety of woofers of different sizes, from 8" to 12".


ST260 BEM results - free field simulation (Ath/gnuplot standard report - see User Guide for more info) :



Full-space polar map (0 - 180°; created with VACS):



Some practical realizations of this waveguide, including acoustic measurements:
1) https://www.diyaudio.com/forums/multi-way/338806-acoustic-horn-design-easy-ath4-post6737942.html
2) https://www.diyaudio.com/forums/multi-way/338806-acoustic-horn-design-easy-ath4-post6498359.html
3) https://www.diyaudio.com/forums/multi-way/338806-acoustic-horn-design-easy-ath4-post6500843.html
4) https://www.diyaudio.com/forums/multi-way/354772-acoustic-horn-design-practical-post6458832.html
5) https://www.diyaudio.com/forums/multi-way/354772-acoustic-horn-design-practical-post6558650.html
6) https://www.diyaudio.com/forums/multi-way/338806-acoustic-horn-design-easy-ath4-post6497649.html