PRV Audio 8MB700FT-NDY-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.1dB
• Frequency response 70 - 5600Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 59.6Hz
• Mechanical quality factor QMS 3.81
• Electrical quality factor QES 0.24
• Total quality factor QTS 0.22

Large signal parameters

• Maximum linear excursion xmax 3.8mm
• Air volume displaced at xmax VD 93cm³
• Power handling P 350W
• Program power Pmax 700W
• Peak power Ppeak 1400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.266mH
• VC Diameter 63mm
• Winding height HVC 11.5mm
• Winding material Copper Clad Aluminium
• Former material Glass Fiber

Magnet

• Force factor Bl 11.3N/A
• Motor constant Bl/√RE 6.22N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 178mm
• Effective area SD 249cm²
• Moving mass MMS 24.7g
• Moving mass (without air load) MMD 21.9g

Suspensions

• Stiffness KMS 3.47N/mm
• Compliance CMS 288µm/N
• Equivalent volume to the compliance VAS 25L
• Mechanical resistance RMS 2.42N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 209mm
• Baffle cutout diameter 186mm
• Overall depth 102mm
• Flange thickness 9mm
• Mounting depth 93mm
• Volume occupied by the driver (estimated) 0.8L
• Net weight 1.96kg
• Frame material Die Cast Aluminium