5426 Multicell Horn 2x5

3D printed multicell horn (2x5 cell matrix) designed for 1.75-inch voice coil compression drivers with standard 1 3/8"-18 TPI threaded throat adapter or modifiable.

This model is designed to provide optimal acoustic dispersion and smooth expansion profile control, bridging traditional multicell horn geometry with additive manufacturing techniques. Perfect for DIY audio enthusiasts, custom public address (PA) systems, or vintage-style acoustic projects.

Technical Specifications

• Type: Sectoral multicell horn (5 columns × 2 rows, 10 independent cells)

• Inlet / Throat: 1.75 inch

• Acoustic cutoff frequency: ~850 Hz

• Recommended crossover frequency: 1,800 Hz (min. 1,600 Hz @ 18 dB/oct or 24 dB/oct)

• Overall nominal dispersion (-6 dB): 90° × 40° to 100° × 45° (H × V)

• Horizontal behavior: ~90°–100° constant from 2 kHz to 8 kHz (gradual narrowing towards 70°–80° beyond 10 kHz)

• Vertical behavior: ~40°–45° (tight control to limit floor/ceiling reflections)

• Diffusion geometry:

  • Inter-axis cell splay: ~18° to 20°

  • Own flare per cell: ~20°

• Recommended driver: 1" compression drivers with 1.4" to 1.75" dome

3D Printing and Assembly Instructions

• Material: PETG Layer height: 0.20 mm (or 0.28 mm for faster prints with larger nozzles).

• Number of walls / Perimeters: 3 walls Sealing note: Ensure perfect airtightness at the thread/throat connection using Teflon tape or a rubber gasket to prevent any acoustic leakage.