BishopSound BSP18

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 8.96
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 8.2mm
• Maximum excursion before damage xlim 15.3mm
• Air volume displaced at xmax VD 722cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 0.71mH
• VC Diameter 100mm
• Winding height HVC 32mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1T
• Force factor Bl 24.2N/A
• Motor constant Bl/√RE 10.8N/√W
• Air gap height HAG 16mm
• Material Ferrite Ring

Diaphragm

• Effective diameter 335mm
• Effective area SD 880cm²
• Moving mass MMS 175g
• Moving mass (without air load) MMD 155g

Suspensions

• Stiffness KMS 14.3N/mm
• Compliance CMS 70µm/N
• Equivalent volume to the compliance VAS 58.6L
• Mechanical resistance RMS 4.21N·s/m

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 460mm
• Overall depth 208mm
• Flange thickness 1mm
• Mounting depth 207mm
• Volume occupied by the driver 15L
• Net weight 12.0kg
• Frame material Aluminium