BOBO Hifi
BOBO Hifi ToolsHorn Design Tool 2.2
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Free browser-based horn and waveguide loudspeaker design tool — model horns, multi-entry horns, constant-directivity waveguides, and tapped horns, then preview them in 3D. Built by BOBO Hifi, who design and build hi-fi speakers in Sydney, Australia.

3D Model

Frequency Response

On-axis SPL

Electrical impedance

Directivity

Recalculating…
Computing directivity…

Flare

Area expansion and local cutoff

Start from a preset

Geometry

Horn profile

300 mm total
36.0240.00300H profile, drawn to scale. Numbers above the outline are full width/height (mm) at the throat and each segment end; numbers along the bottom are axial position from the throat (mm). Profile: conical.Horizontal
36.0240.00300V profile, drawn to scale. Numbers above the outline are full width/height (mm) at the throat and each segment end; numbers along the bottom are axial position from the throat (mm). Profile: conical.Vertical
Throat (x=0)

Size and shape where the horn begins — where a throat driver couples directly.

Roundness
Segment 1
Segment length (mm)
H
End half-dim (mm)

37.6° included angle

V
End half-dim (mm)

37.6° included angle

Cross-section roundness at end

Horn Lip

Lip H (mm)
Lip V (mm)

Driver & environment

Driver

Throat
Saved driver presets
Chambers (per unit)
Front chamber
Rear chamber

Environment

Save / load

Save / load

Designs auto-save to this browser. Export a file to back one up or move it to another computer.