Skar Audio ZVX-8 D4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 77.1dB

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 7.60
• Electrical quality factor QES 1.15
• Total quality factor QTS 0.72

Large signal parameters

• Maximum linear excursion xmax 14mm
• Air volume displaced at xmax VD 263cm³
• Power handling P 900W
• Program power Pmax 1100W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 13.8Ω
• Inductance (1kHz, in series, estimated) LE 8.09mH
• VC Diameter 63.5mm
• Winding material Copper-clad aluminium

Magnet

• Force factor (in series) Bl 20.3N/A
• Motor constant Bl/√RE 5.46N/√W
• Diameter 159mm

Diaphragm

• Effective diameter 155mm
• Effective area SD 188cm²
• Moving mass MMS 137g
• Moving mass (without air load) MMD 135g
• Material Pressed Paper

Suspensions

• Stiffness KMS 3.04N/mm
• Compliance CMS 329µm/N
• Equivalent volume to the compliance VAS 16.5L
• Mechanical resistance RMS 4.53N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 8″
• 220mm
• Overall diameter 220mm
• Baffle cutout diameter 191mm
• Overall depth 195mm
• Flange thickness 32mm
• Mounting depth 163mm
• Volume occupied by the driver (estimated) 2.3L