PRV Audio 8MR400A

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.3dB
• Frequency response 80 - 8500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 79.1Hz
• Mechanical quality factor QMS 10.79
• Electrical quality factor QES 0.97
• Total quality factor QTS 0.89

Large signal parameters

• Maximum linear excursion xmax 3mm
• Air volume displaced at xmax VD 73cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 0.2mH
• VC Diameter 38.1mm
• Winding height HVC 8.8mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.8N/A
• Motor constant Bl/√RE 2.75N/√W
• Air gap height HAG 5.5mm
• Material Ferrite

Diaphragm

• Effective diameter 176mm
• Effective area SD 243cm²
• Moving mass MMS 15.1g
• Moving mass (without air load) MMD 12.4g

Suspensions

• Stiffness KMS 3.73N/mm
• Compliance CMS 268µm/N
• Equivalent volume to the compliance VAS 22.2L
• Mechanical resistance RMS 0.7N·s/m

Dimensions

• Nominal diameter 8″
• 209mm
• Overall diameter 209mm
• Baffle cutout diameter 181mm
• Overall depth 96mm
• Flange thickness 6mm
• Mounting depth 90mm
• Volume occupied by the driver (estimated) 0.78L
• Net weight 2.0kg
• Frame material Stamped Steel