subsim
18" Scoop Horn
Specifications
| Topology | scoop |
|---|---|
| Build complexity | moderate |
| Net volume | 210 L |
| Dimensions (H×W×D) | 840 × 900 × 680 mm |
| Footprint | 6120 cm² |
| Weight | 58 kg |
| F3 | 38 Hz |
| Max SPL | 137 dB |
| Max SPL (excursion-limited) | 134 dB |
| Max SPL (thermal-limited) | 138 dB |
| Impedance minimum | 5.6 Ω |
| Recommended crossover | 100 Hz |
| Horn cutoff | 40 Hz |
| Horn mouth | 5400 cm² |
| Horn throat | 1210 cm² |
| Recommended power | 1400 W |
| Power handling (AES) | 1700 W |
| Power handling (program) | 3400 W |
| Max port velocity | 24 m/s |
| Output density | 113.8 dB/size |
| Plywood sheets | 4× 2440×1220 mm |
| Connectors | speakON NL4 |
Drivers (1)
| Model | Format | Impedance | Fs | Detail | Pe | Sensitivity |
|---|---|---|---|---|---|---|
| B&C 18SW115 | 18" | 8 Ω | 32 Hz | Qts 0.3 · Vas 187 L · Xmax 14 mm | 1700 W | 97 dB |
Measurements / Simulations
Images
Sources
- design.txt · hornresp
- array.aks · akabak
Notes
Build notes
Sample data: values are illustrative, not measured.
Classic scoop-style front-loaded horn around the 18SW115-8. The wide mouth and shallow fold give strong output from 40-120 Hz with a characteristic scooped voicing suited to reggae and dub systems.
Horn geometry
- Mouth area: ~5400 cm² (wide-mouth scoop)
- Throat matched to driver Sd (1210 cm²)
- Single-fold path; driver fires upward into the fold
- Expansion ratio: ~1.35
Usage
Horizontal stacking of scoops increases coupling and directivity at low frequencies. Typical crossover to mid horn at 100-120 Hz.