PRV Audio RS8-SUBD4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 53.4Hz
• Mechanical quality factor QMS 8.13
• Electrical quality factor QES 0.82
• Total quality factor QTS 0.75

Large signal parameters

• Maximum linear excursion xmax 14.5mm
• Air volume displaced at xmax VD 292cm³
• Power handling P 250W
• Program power Pmax 500W
• Peak power Ppeak 1000W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.8Ω
• Inductance (1kHz, in series) LE 4.96mH
• VC Diameter 61.1mm
• Winding height HVC 33mm
• Winding material Copper
• Former material Black Aluminum

Magnet

• Force factor (in series) Bl 19.1N/A
• Motor constant Bl/√RE 7.32N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 160mm
• Effective area SD 201cm²
• Moving mass MMS 132g
• Moving mass (without air load) MMD 130g

Suspensions

• Stiffness KMS 16.7N/mm
• Compliance CMS 60µm/N
• Equivalent volume to the compliance VAS 3.79L
• Mechanical resistance RMS 5.46N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Overall diameter 218mm
• Baffle cutout diameter 188mm
• Overall depth 147mm
• Flange thickness 21mm
• Mounting depth 126mm
• Volume occupied by the driver (estimated) 2.2L
• Net weight 6.25kg
• Frame material Stamped Steel