PRV Audio 8MB500-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.8dB
• Frequency response 75 - 7500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 72Hz
• Mechanical quality factor QMS 25.59
• Electrical quality factor QES 0.66
• Total quality factor QTS 0.64

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 109cm³
• Power handling P 250W
• Program power Pmax 500W
• Peak power Ppeak 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.2mH
• VC Diameter 50mm
• Winding height HVC 12mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 7.52N/A
• Motor constant Bl/√RE 3.96N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 175mm
• Effective area SD 241cm²
• Moving mass MMS 22.9g
• Moving mass (without air load) MMD 20.2g

Suspensions

• Stiffness KMS 4.67N/mm
• Compliance CMS 214µm/N
• Equivalent volume to the compliance VAS 17.3L
• Mechanical resistance RMS 0.4N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 210mm
• Baffle cutout diameter 181mm
• Overall depth 92mm
• Flange thickness 8mm
• Mounting depth 84mm
• Volume occupied by the driver (estimated) 0.89L
• Net weight 2.52kg
• Frame material Stamped Steel