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by Marcel Batík

New: ATH Gen2 Waveguides

[1]OS-SE Waveguide (pdf)
Novel low-diffraction profile formula for baffle-mounted horns, 2020.
[2]R-OSSE Acoustic Waveguide (pdf)
Novel low-diffraction parametric formula for free-standing horns, 2022.
[3]Spherical Wave Forming (pdf)
Apparatus for flat-to-spherical wavefront transformation for constant directivity, 2021.
[4]Extended-Throat Waveguides
Technical Note, 2023.
[5]EXAR Waveguides - Segmentizing a horn
Analytic method of separation of axisymmetric horns into segments, 2024.

Associated diyAudio threads: Theory & Design | Practicalities
Interactive waveguide formulas in Desmos calculator: OSSE | R-OSSE

Waveguide kits available for DIY / 3D printing:

Gen2 Waveguides (Variable-Throat)

⌀280 x 144 mm / 1"
⌀300 x 122 mm / 0.75"
⌀330 x 160 mm / 1"
EXAR 400
⌀400 x 255 mm / 1"

Other projects:

ATH-280EX Extended-throat waveguide, 1" throat, ⌀280 mm / STL file via cults3d.com
ST260 Basic R-OSSE waveguide, 1" throat, ⌀ 260 mm
ATHEX Hexagonal waveguides with bended petals
ATH-DOME T34B Waveguide for BlieSMa T34B tweeter / STL file via cults3d.com

ATH software (zip package, the latest release)
User Guide

No support provided.

The latest web update: May 8, 2024