B&C Speaker 18PS76

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.7dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 6.10
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 847cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.9mH
• VC Diameter 76mm
• Winding height HVC 24mm
• Winding material Copper
• Former material Glass Fibre

Magnet

• Flux density B 1.25T
• Force factor Bl 25.8N/A
• Motor constant Bl/√RE 11.5N/√W
• Air gap height HAG 11mm
• Material Ferrite

Diaphragm

• Effective diameter 393mm
• Effective area SD 1210cm²
• Moving mass MMS 149g
• Moving mass (without air load) MMD 120g

Suspensions

• Stiffness KMS 10N/mm
• Compliance CMS 100µm/N
• Equivalent volume to the compliance VAS 207L
• Mechanical resistance RMS 5.99N·s/m
• Spider material Double Silicone

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 460mm
• Baffle cutout diameter 422mm
• Overall depth 202mm
• Flange thickness 16mm
• Mounting depth 186mm
• Volume occupied by the driver 9L
• Net weight 10.7kg