topsim
2×10"+1" 2-Way Top
Specifications
| Topology | bass reflex |
|---|---|
| Ways | 2-way |
| Build complexity | simple |
| Net volume | 52 L |
| Dimensions (H×W×D) | 620 × 480 × 420 mm |
| Footprint | 2016 cm² |
| Weight | 26 kg |
| F3 | 72 Hz |
| F6 | 60 Hz |
| Fb (port/vent tuning) | 68 Hz |
| Max SPL | 135 dB |
| Sensitivity | 98 dB |
| Impedance minimum | 3.2 Ω |
| Coverage angle | 90° |
| Recommended crossover | 1800 Hz |
| Horn cutoff | 1000 Hz |
| Recommended power | 800 W |
| Power handling (AES) | 1600 W |
| Power handling (program) | 3200 W |
| Output density | 117.8 dB/size |
| Plywood sheets | 2× 2440×1220 mm |
| Connectors | speakON NL4 |
Drivers (3)
| Model | Format | Impedance | Fs | Detail | Pe | Sensitivity |
|---|---|---|---|---|---|---|
| B&C 10PLB76 | 10" | 8 Ω | 52 Hz | Qts 0.19 · Vas 31 L · Xmax 6 mm | 400 W | 95.2 dB |
| B&C 10PLB76 | 10" | 8 Ω | 52 Hz | Qts 0.19 · Vas 31 L · Xmax 6 mm | 400 W | 95.2 dB |
| B&C DE250 | 1"" exit | 8 Ω | 700 Hz | 1200-20000 Hz · xover ≥ 1500 Hz | 60 W | 108 dB |
Measurements / Simulations
Sources
- design.txt (not found) · hornresp
Notes
Build notes
Sample data: values are illustrative, not measured.
Two 10PLB76-8 woofers in a shared ported chamber, wired in parallel to a 4 Ω load. The DE250 1“ compression driver is mounted on a 90° waveguide. Active bi-amp required.
The single-woofer sim (woofer.csv) models one driver in the full cabinet volume, useful
for evaluating substitute 10“ drivers against the 10PLB76 in the same alignment. The
combined system sim (spl.csv) shows the 3 dB gain from the second woofer and the full
HF extension through the DE250.
Crossover
- LF/HF: 1800 Hz LR4 (24 dB/oct); DE250 minimum crossover is 1500 Hz
- High-pass at 65 Hz to protect woofers near excursion limit
Wiring
Both woofers in parallel: 8 Ω + 8 Ω → 4 Ω nominal. Verify amp stability at 4 Ω. DE250 on a separate 8 Ω channel.