B&C Speaker 12FW88

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.5dB
• Frequency response 50 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 53Hz
• Mechanical quality factor QMS 7.70
• Electrical quality factor QES 0.35
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 8mm
• Air volume displaced at xmax VD 425cm³
• Power handling P 700W
• Program power Pmax 1400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 0.9mH
• VC Diameter 88mm
• Winding height HVC 21.5mm
• Winding material Aluminium
• Former material Glass Fibre

Magnet

• Flux density B 1.04T
• Force factor Bl 19.5N/A
• Motor constant Bl/√RE 8.63N/√W
• Air gap height HAG 11mm
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 531cm²
• Moving mass MMS 76.4g
• Moving mass (without air load) MMD 67.6g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 8.7N/mm
• Compliance CMS 115µm/N
• Equivalent volume to the compliance VAS 45.7L
• Mechanical resistance RMS 3.3N·s/m
• Spider material Silicone

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 315mm
• Baffle cutout diameter 285mm
• Overall depth 145mm
• Flange thickness 12mm
• Mounting depth 133mm
• Volume occupied by the driver 2.5L
• Net weight 8.25kg