B&C Speaker 18TBX100
4Ω
8ΩSubwoofer
Nominal diameter | 18″ / 460 mm |
Resonance | 30 Hz |
Q factor | 0.31 |
Sensitivity | 94.4 dB |
Linear excursion | ± 9 mm |
Program Power | 2400 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 94.4dB
- Frequency response 35 - 1000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 30Hz
- Mechanical quality factor QMS 7.00
- Electrical quality factor QES 0.33
- Total quality factor QTS 0.31
Large signal parameters
- Maximum linear excursion xmax 9mm
- Air volume displaced at xmax VD 1089cm³
- Power handling P 1200W
- Program power Pmax 2400W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.7Ω
- Inductance (1kHz) LE 1.73mH
- VC Diameter 100mm
- Winding height HVC 25mm
- Winding material Copper
- Former material Glass Fibre
Magnet
- Flux density B 1.1T
- Force factor Bl 22N/A
- Motor constant Bl/√RE 11.4N/√W
- Air gap height HAG 12mm
- Material Ferrite
Diaphragm
- Effective diameter 393mm
- Effective area SD 1210cm²
- Moving mass MMS 230g
- Moving mass (without air load) MMD 201g
- Material Waterproof Both Sides
Suspensions
- Stiffness KMS 8.13N/mm
- Compliance CMS 123µm/N
- Equivalent volume to the compliance VAS 256L
- Mechanical resistance RMS 6.19N·s/m
- Spider material Silicone
Dimensions
- Nominal diameter 18″
- 460mm
- Overall diameter 460mm
- Baffle cutout diameter 422mm
- Overall depth 209mm
- Flange thickness 16mm
- Mounting depth 193mm
- Volume occupied by the driver 10.5L
- Net weight 12.7kg
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