BMS 18S450
8Ω
Subwoofer
Nominal diameter | 18″ / 458 mm |
Resonance | 29 Hz |
Q factor | 0.31 |
Sensitivity | 94.7 dB |
Linear excursion | ± 12 mm |
Program Power | 2400 W |
.jpg)
- Sensitivity (1W, 1m, infinite baffle) SPL1W 94.7dB
- Frequency response 20 - 200Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 29Hz
- Mechanical quality factor QMS 7.25
- Electrical quality factor QES 0.32
- Total quality factor QTS 0.31
Large signal parameters
- Maximum linear excursion xmax 12mm
- Air volume displaced at xmax VD 1456cm³
- Power handling P 1200W
- Program power Pmax 2400W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.5Ω
- Inductance (1kHz) LE 1.1mH
- VC Diameter 101.6mm
- Winding height HVC 36mm
- Winding material Copper
Magnet
- Force factor Bl 26.5N/A
- Motor constant Bl/√RE 11.3N/√W
- Air gap height HAG 12mm
- Material Ferrite
Diaphragm
- Effective diameter 393mm
- Effective area SD 1213cm²
- Moving mass MMS 224g
- Moving mass (without air load) MMD 195g
Suspensions
- Stiffness KMS 7.46N/mm
- Compliance CMS 134µm/N
- Equivalent volume to the compliance VAS 281L
- Mechanical resistance RMS 5.63N·s/m
Dimensions
- Nominal diameter 18″
- 458mm
- Overall diameter 458mm
- Baffle cutout diameter 414mm
- Overall depth 233mm
- Volume occupied by the driver (estimated) 8.2L
- Net weight 14.5kg
- Frame material Cast Aluminum
.png)
.png)
.png)
Export this driver to a simulation software:
Closed Box Simulator·





