Skar Audio EVL-12 D4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85dB

Thiele & Small parameters

• Resonance frequency (free air) fS 32.6Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 23.5mm
• Air volume displaced at xmax VD 1108cm³
• Power handling P 1250W
• Program power Pmax 2500W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.8Ω
• Inductance (1kHz, in series, estimated) LE 6.05mH
• VC Diameter 76.2mm
• Winding material Copper-clad aluminium

Magnet

• Force factor (in series) Bl 25.6N/A
• Motor constant Bl/√RE 9.82N/√W
• Diameter 180mm

Diaphragm

• Effective diameter 245mm
• Effective area SD 471cm²
• Moving mass MMS 256g
• Moving mass (without air load) MMD 249g
• Material Pressed Paper

Suspensions

• Stiffness KMS 17.2N/mm
• Compliance CMS 58µm/N
• Equivalent volume to the compliance VAS 18.2L
• Mechanical resistance RMS 10.5N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 12″
• 318mm
• Overall diameter 318mm
• Baffle cutout diameter 285mm
• Overall depth 226mm
• Flange thickness 33mm
• Mounting depth 193mm
• Volume occupied by the driver (estimated) 4.6L