PRV Audio 8MR400B-4 SLIM

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.7dB
• Frequency response 95 - 7500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 92.9Hz
• Mechanical quality factor QMS 25.53
• Electrical quality factor QES 0.76
• Total quality factor QTS 0.74

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 75cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.8Ω
• Inductance (1kHz) LE 0.167mH
• VC Diameter 38mm
• Winding height HVC 9.5mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.34N/A
• Motor constant Bl/√RE 3.25N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 171mm
• Effective area SD 230cm²
• Moving mass MMS 13.8g
• Moving mass (without air load) MMD 11.3g

Suspensions

• Stiffness KMS 4.7N/mm
• Compliance CMS 213µm/N
• Equivalent volume to the compliance VAS 15.7L
• Mechanical resistance RMS 0.32N·s/m

Dimensions

• Nominal diameter 8″
• 152mm
• Overall diameter 209mm
• Baffle cutout diameter 181mm
• Overall depth 75mm
• Flange thickness 7mm
• Mounting depth 68mm
• Volume occupied by the driver (estimated) 0.73L
• Net weight 2.3kg
• Frame material Stamped Steel