Kartesian Sub180_vMS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84dB
• Frequency response 30 - 700Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 31Hz
• Mechanical quality factor QMS 2.20
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.33

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 135cm³
• Power handling P 200W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.66mH
• VC Diameter 37mm
• Winding material Copper
• Former material Vented Aluminum

Magnet

• Flux density B 1.3T
• Force factor Bl 8.85N/A
• Motor constant Bl/√RE 3.55N/√W
• Diameter 120mm
• Height 34mm
• Material Dual Ferrite Y40

Diaphragm

• Effective diameter 125mm
• Effective area SD 123cm²
• Moving mass MMS 25.2g
• Moving mass (without air load) MMD 24.1g
• Material Treated paper

Suspensions

• Stiffness KMS 0.6N/mm
• Compliance CMS 1667µm/N
• Equivalent volume to the compliance VAS 22.5L
• Mechanical resistance RMS 2.23N·s/m
• Surround material Low lost NBR
• Spider material Dual: dynamiK + pumaX

Dimensions

• Nominal diameter 8″
• 180mm
• Overall diameter 182mm
• Baffle cutout diameter 151mm
• Overall depth 102mm
• Flange thickness 6mm
• Mounting depth 96mm
• Volume occupied by the driver (estimated) 0.75L
• Frame material Injected aluminium (ACD12)