PRV Audio 69FR250-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.1dB
• Frequency response 75 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 82.1Hz
• Mechanical quality factor QMS 15.28
• Electrical quality factor QES 0.74
• Total quality factor QTS 0.70

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 70cm³
• Power handling P 125W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.16mH
• VC Diameter 38mm
• Winding height HVC 10mm
• Winding material Copper Clad Aluminium
• Former material Kapton

Magnet

• Force factor Bl 6.1N/A
• Motor constant Bl/√RE 3.26N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 160mm
• Effective area SD 200cm²
• Moving mass MMS 15.1g
• Moving mass (without air load) MMD 13.4g

Suspensions

• Stiffness KMS 5.56N/mm
• Compliance CMS 180µm/N
• Equivalent volume to the compliance VAS 13.9L
• Mechanical resistance RMS 0.51N·s/m

Dimensions

• Nominal size 6 x 9″
• 159 x 228mm
• Overall size 164 x 237mm
• Mounting baffle cutout 149 x 220mm
• Overall depth 98mm
• Flange thickness 7mm
• Mounting depth 91mm
• Volume occupied by the driver (estimated) 0.76L
• Net weight 2.4kg
• Frame material Aluminium