PRV Audio 6MR250B-4 SLIM

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93.5dB
• Frequency response 145 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 143Hz
• Mechanical quality factor QMS 28.73
• Electrical quality factor QES 0.85
• Total quality factor QTS 0.82

Large signal parameters

• Maximum linear excursion xmax 3.3mm
• Air volume displaced at xmax VD 47cm³
• Power handling P 125W
• Program power Pmax 250W
• Peak power Ppeak 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.6Ω
• Inductance (1kHz) LE 0.135mH
• VC Diameter 38mm
• Winding height HVC 9.5mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 5.82N/A
• Motor constant Bl/√RE 3.07N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 135mm
• Effective area SD 143cm²
• Moving mass MMS 8.89g
• Moving mass (without air load) MMD 7.7g

Suspensions

• Stiffness KMS 7.19N/mm
• Compliance CMS 139µm/N
• Equivalent volume to the compliance VAS 4L
• Mechanical resistance RMS 0.28N·s/m

Dimensions

• Nominal diameter 6″
• 152mm
• Overall diameter 165mm
• Baffle cutout diameter 144mm
• Overall depth 61mm
• Flange thickness 6mm
• Mounting depth 55mm
• Volume occupied by the driver (estimated) 0.44L
• Net weight 1.6kg
• Frame material Stamped Steel