B&C Speaker 12CLX64

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.6dB
• Frequency response 54 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 54Hz
• Mechanical quality factor QMS 10.10
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.57

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 287cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.54mH
• VC Diameter 64mm
• Winding height HVC 14.5mm
• Winding material Copper
• Former material Kapton

Magnet

• Flux density B 0.9T
• Force factor Bl 11.9N/A
• Motor constant Bl/√RE 5.01N/√W
• Air gap height HAG 8mm
• Material Neodymium Ring

Diaphragm

• Effective diameter 258mm
• Effective area SD 522cm²
• Moving mass MMS 45.3g
• Moving mass (without air load) MMD 36.8g
• Material Waterproof Front Side

Suspensions

• Stiffness KMS 5.21N/mm
• Compliance CMS 192µm/N
• Equivalent volume to the compliance VAS 74L
• Mechanical resistance RMS 1.52N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Overall diameter 313mm
• Baffle cutout diameter 282mm
• Overall depth 164mm
• Flange thickness 9mm
• Mounting depth 155mm
• Volume occupied by the driver (estimated) 1.9L
• Net weight 3.2kg