PRV Audio 8MB450-4 v2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91.3dB
• Frequency response 75 - 7500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 76.6Hz
• Mechanical quality factor QMS 22.84
• Electrical quality factor QES 0.92
• Total quality factor QTS 0.88

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 109cm³
• Power handling P 225W
• Program power Pmax 450W
• Peak power Ppeak 900W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.17mH
• VC Diameter 50mm
• Winding height HVC 12mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.19N/A
• Motor constant Bl/√RE 3.26N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 175mm
• Effective area SD 241cm²
• Moving mass MMS 20.5g
• Moving mass (without air load) MMD 17.8g

Suspensions

• Stiffness KMS 4.76N/mm
• Compliance CMS 210µm/N
• Equivalent volume to the compliance VAS 17L
• Mechanical resistance RMS 0.43N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 210mm
• Baffle cutout diameter 182mm
• Overall depth 92mm
• Flange thickness 7mm
• Mounting depth 85mm
• Volume occupied by the driver (estimated) 0.73L
• Net weight 1.86kg
• Frame material Stamped Steel