topmeasured
12" Coaxial Top

Specifications
| Topology | bass reflex |
|---|---|
| Ways | 2-way |
| Net volume | 45 L |
| Dimensions (H×W×D) | 560 × 440 × 380 mm |
| Footprint | 1672 cm² |
| Weight | 22 kg |
| F3 | 70 Hz |
| F6 | 58 Hz |
| Fb (port/vent tuning) | 65 Hz |
| Max SPL | 132 dB |
| Sensitivity | 98 dB |
| Impedance minimum | 6.6 Ω |
| Recommended power | 500 W |
| Power handling (AES) | 500 W |
| Power handling (program) | 1000 W |
| Output density | 115.5 dB/size |
| Plywood sheets | 1× 2440×1220 mm |
| Connectors | speakON NL4 |
Drivers (1)
| Model | Format | Impedance | Fs | Detail | Pe | Sensitivity |
|---|---|---|---|---|---|---|
| B&C 12CXN76 | 12" | 8 Ω | 42 Hz | Qts 0.19 · Vas 120 L · Xmax 6 mm | 350 W | 98.3 dB |
Measurements / Simulations
Images


Sources
- design.txt · hornresp
Notes
Build notes
Sample data: values are illustrative, not measured.
Compact 12“ bass-reflex top enclosure. The measurement was taken in ground-plane conditions at 1 m with a calibrated microphone in REW.
Port
- Slot port at the rear, 80 mm × 200 mm
- Port depth: 180 mm
- Tuning: 65 Hz (Fb)
Usage
Typically flown or placed on a sub. High-pass at 80 Hz.