FaitalPRO 12RS550 8Ω

• Sensitivity (1W, 1m, infinite baffle) SPL1W 91dB
• Frequency response 45 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 6.90
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 9.3mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 488cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 1.5mH
• VC Diameter 77mm
• Winding height HVC 22mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 1.2T
• Force factor Bl 20.5N/A
• Motor constant Bl/√RE 9.08N/√W
• Air gap height HAG 10.5mm
• Material Ferrite Ring

Diaphragm

• Effective diameter 259mm
• Effective area SD 528cm²
• Moving mass MMS 123g
• Moving mass (without air load) MMD 114g

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 45.4L
• Mechanical resistance RMS 4.7N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 316mm
• Baffle cutout diameter 282mm
• Overall depth 145mm
• Flange thickness 17mm
• Mounting depth 128mm
• Volume occupied by the driver 2.9L
• Net weight 8.1kg
• Frame material Aluminium