PRV Audio 8MR450CF-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.7dB
• Frequency response 95 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 82.8Hz
• Mechanical quality factor QMS 23.21
• Electrical quality factor QES 0.73
• Total quality factor QTS 0.71

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 80cm³
• Power handling P 225W
• Program power Pmax 450W
• Peak power Ppeak 900W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.15mH
• VC Diameter 38mm
• Winding height HVC 10mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.06N/A
• Motor constant Bl/√RE 3.29N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 15.2g
• Moving mass (without air load) MMD 12.7g

Suspensions

• Stiffness KMS 4.1N/mm
• Compliance CMS 244µm/N
• Equivalent volume to the compliance VAS 17.5L
• Mechanical resistance RMS 0.34N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 210mm
• Baffle cutout diameter 185mm
• Overall depth 92mm
• Flange thickness 10mm
• Mounting depth 82mm
• Volume occupied by the driver (estimated) 0.79L
• Net weight 2.1kg
• Frame material Stamped steel