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ADVANCED -TRANSITION HORNS
by Marcel Batík










High-performance devices for sound reproduction



ATH Gen2 Waveguides
/ Long adapters for BMS drivers

A460D / true constant-directivity waveguide

Tritonia Waveguides



All STL kits via Cults

Work on horns:
[1]OS-SE Waveguide (pdf)
Novel profile formula for baffle-mounted horns, 2020.
[2]R-OSSE Acoustic Waveguide (pdf)
New parametric formula for low-diffraction, 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



Update History (since 2025, newest first)

2025-04-21 T520-ESP-50 / 2" shaping-plug adapter set for Gen2 horns (updated)
2025-04-03 A620G2 waveguide kit
2025-03-16 T520-1720 / Gen2 throat adapter for Celestion CDX1-1720
2025-02-10 T520-760 / Gen2 throat adapter for Radian 760NeoPB
2025-02-18 Tritonia waveguide kits
2025-01-13 Gen2 long-throat adapter for BMS 5530ND






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

No support provided.