Skar Audio EVL-15 D4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 6.09
• Electrical quality factor QES 0.91
• Total quality factor QTS 0.79

Large signal parameters

• Maximum linear excursion xmax 23.5mm
• Air volume displaced at xmax VD 1831cm³
• Power handling P 1250W
• Program power Pmax 2500W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 9.6Ω
• Inductance (1kHz, in series, estimated) LE 10mH
• VC Diameter 76.2mm
• Winding material Copper-clad aluminium

Magnet

• Force factor (in series) Bl 27.6N/A
• Motor constant Bl/√RE 8.91N/√W
• Diameter 180mm

Diaphragm

• Effective diameter 315mm
• Effective area SD 779cm²
• Moving mass MMS 325g
• Moving mass (without air load) MMD 309g
• Material Pressed Paper

Suspensions

• Stiffness KMS 20.8N/mm
• Compliance CMS 48µm/N
• Equivalent volume to the compliance VAS 41.4L
• Mechanical resistance RMS 12.1N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 15″
• 381mm
• Baffle cutout diameter 356mm
• Overall depth 249mm
• Flange thickness 32mm
• Mounting depth 217mm
• Volume occupied by the driver (estimated) 9.8L