PRV Audio 8MR500CF-NDY-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.4dB
• Frequency response 95 - 10000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 62.9Hz
• Mechanical quality factor QMS 10.06
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.25

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 74cm³
• Power handling P 250W
• Program power Pmax 500W
• Peak power Ppeak 1000W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.047mH
• VC Diameter 51mm
• Winding height HVC 10mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 11.3N/A
• Motor constant Bl/√RE 6.21N/√W
• Air gap height HAG 7mm

Diaphragm

• Effective diameter 170mm
• Effective area SD 227cm²
• Moving mass MMS 24.7g
• Moving mass (without air load) MMD 22.2g

Suspensions

• Stiffness KMS 3.88N/mm
• Compliance CMS 258µm/N
• Equivalent volume to the compliance VAS 18.6L
• Mechanical resistance RMS 0.97N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 210mm
• Baffle cutout diameter 183mm
• Overall depth 95mm
• Flange thickness 10mm
• Mounting depth 85mm
• Volume occupied by the driver (estimated) 0.75L
• Net weight 1.89kg
• Frame material Stamped Steel