B&C Speaker 18TBW100

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.1dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33Hz
• Mechanical quality factor QMS 6.23
• Electrical quality factor QES 0.34
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 12mm
• Air volume displaced at xmax VD 1452cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 1.64mH
• VC Diameter 100mm
• Winding height HVC 31mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.15T
• Force factor Bl 22.8N/A
• Motor constant Bl/√RE 12.7N/√W
• Air gap height HAG 15mm
• Material Ferrite

Diaphragm

• Effective diameter 393mm
• Effective area SD 1210cm²
• Moving mass MMS 268g
• Moving mass (without air load) MMD 239g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 182L
• Mechanical resistance RMS 8.92N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 460mm
• Baffle cutout diameter 422mm
• Overall depth 241mm
• Flange thickness 16mm
• Mounting depth 225mm
• Volume occupied by the driver 11L
• Net weight 15.4kg