B&C Speaker 18DS100

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.7dB
• Frequency response 34 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 9.50
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 14.5mm
• Air volume displaced at xmax VD 1755cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 4.5Ω
• Inductance (1kHz) LE 4.4mH
• VC Diameter 100mm
• Winding height HVC 36.5mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 0.7T
• Force factor Bl 30N/A
• Motor constant Bl/√RE 14.1N/√W
• Air gap height HAG 16mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 393mm
• Effective area SD 1210cm²
• Moving mass MMS 278g
• Moving mass (without air load) MMD 249g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 12.8N/mm
• Compliance CMS 78µm/N
• Equivalent volume to the compliance VAS 155L
• Mechanical resistance RMS 6.25N·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