subsim
2×18" Bass Reflex
Specifications
| Topology | bass reflex |
|---|---|
| Net volume | 300 L |
| Dimensions (H×W×D) | 900 × 600 × 650 mm |
| Footprint | 3900 cm² |
| Weight | 90 kg |
| F3 | 36 Hz |
| F6 | 28 Hz |
| Fb (port/vent tuning) | 34 Hz |
| Max SPL | 140 dB |
| Sensitivity | 100 dB |
| Impedance minimum | 3.5 Ω |
| Recommended crossover | 100 Hz |
| Recommended power | 2000 W |
| Power handling (AES) | 3400 W |
| Power handling (program) | 6800 W |
| Output density | 115.2 dB/size |
| Plywood sheets | 4× 2440×1220 mm |
| Connectors | speakON NL4 |
Drivers (2)
| 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 |
| B&C 18SW115 | 18" | 8 Ω | 32 Hz | Qts 0.3 · Vas 187 L · Xmax 14 mm | 1700 W | 97 dB |
Measurements / Simulations
Sources
- design.txt (not found) · hornresp
Notes
Build notes
Sample data: values are illustrative, not measured.
Two 18SW115-8 drivers in a shared vented chamber, wired in parallel to a nominal 4 Ω load. Both drivers share the same tuned port; the combined net volume gives a similar alignment to the single-driver variant with extended low-end output.
Port
- Two round ports, 150 mm diameter each
- Port length: 460 mm
- Tuning: 34 Hz (Fb)
Wiring
Drivers wired in parallel: 8 Ω + 8 Ω → 4 Ω nominal. Check amp stability at 4 Ω before use.