PRV Audio 8MR500-NDY-4 v2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.4dB
• Frequency response 90 - 9000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 80.8Hz
• Mechanical quality factor QMS 5.18
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 84cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 0.35mH
• VC Diameter 51mm
• Winding height HVC 11mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 9.16N/A
• Motor constant Bl/√RE 4.76N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 175mm
• Effective area SD 241cm²
• Moving mass MMS 21.7g
• Moving mass (without air load) MMD 19.1g

Suspensions

• Stiffness KMS 5.59N/mm
• Compliance CMS 179µm/N
• Equivalent volume to the compliance VAS 14.5L
• Mechanical resistance RMS 2.12N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 206mm
• Baffle cutout diameter 187mm
• Overall depth 85mm
• Flange thickness 8mm
• Mounting depth 77mm
• Volume occupied by the driver (estimated) 0.49L
• Net weight 1.1kg
• Frame material Stamped Steel