B&C Speaker 18TBX100

• 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