B&C Speaker 18SW100

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.5dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 5.91
• Electrical quality factor QES 0.40
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 12.5mm
• Air volume displaced at xmax VD 1513cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 1.52mH
• VC Diameter 100mm
• Winding height HVC 32mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.15T
• Force factor Bl 22N/A
• Motor constant Bl/√RE 12.3N/√W
• Air gap height HAG 14mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 393mm
• Effective area SD 1210cm²
• Moving mass MMS 244g
• Moving mass (without air load) MMD 215g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 13.7N/mm
• Compliance CMS 73µm/N
• Equivalent volume to the compliance VAS 160L
• Mechanical resistance RMS 9.34N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 460mm
• Baffle cutout diameter 422mm
• Overall depth 239mm
• Flange thickness 16mm
• Mounting depth 223mm
• Volume occupied by the driver 10L
• Net weight 10.5kg