PRV Audio 6MR400CF-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.6dB
• Frequency response 120 - 12000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 131Hz
• Mechanical quality factor QMS 26.61
• Electrical quality factor QES 0.78
• Total quality factor QTS 0.76

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 53cm³
• Power handling P 200W
• Program power Pmax 400W
• Peak power Ppeak 800W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.151mH
• VC Diameter 38mm
• Winding height HVC 10mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.32N/A
• Motor constant Bl/√RE 3.43N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 138mm
• Effective area SD 150cm²
• Moving mass MMS 11.2g
• Moving mass (without air load) MMD 9.9g

Suspensions

• Stiffness KMS 7.58N/mm
• Compliance CMS 132µm/N
• Equivalent volume to the compliance VAS 4.11L
• Mechanical resistance RMS 0.35N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 166mm
• Baffle cutout diameter 145mm
• Overall depth 80mm
• Flange thickness 10mm
• Mounting depth 70mm
• Volume occupied by the driver (estimated) 0.58L
• Net weight 1.9kg
• Frame material Stamped steel