B&C Speaker 18NBX100

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.7dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 7.00
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 1210cm³
• Power handling P 1200W
• Program power Pmax 2400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 1.74mH
• 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 11.6N/√W
• Air gap height HAG 11mm
• Material Neodymium Inside Slug

Diaphragm

• Effective diameter 393mm
• Effective area SD 1210cm²
• Moving mass MMS 225g
• Moving mass (without air load) MMD 196g
• Material Waterproof Both Sides

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 192L
• Mechanical resistance RMS 7.07N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 460mm
• Baffle cutout diameter 422mm
• Overall depth 208mm
• Flange thickness 14mm
• Mounting depth 194mm
• Volume occupied by the driver 8.5L
• Net weight 9.05kg