Skar Audio EVL-65 D4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81.9dB

Thiele & Small parameters

• Resonance frequency (free air) fS 64Hz
• Mechanical quality factor QMS 4.60
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.53

Large signal parameters

• Maximum linear excursion xmax 6.3mm
• Air volume displaced at xmax VD 71cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 7.0Ω
• Inductance (1kHz, in series, estimated) LE 1.05mH
• VC Diameter 50.8mm
• Winding material Copper

Magnet

• Force factor (in series) Bl 15.4N/A
• Motor constant Bl/√RE 5.82N/√W
• Diameter 133mm

Diaphragm

• Effective diameter 120mm
• Effective area SD 113cm²
• Moving mass MMS 50.2g
• Moving mass (without air load) MMD 49.2g
• Material Pressed Paper

Suspensions

• Stiffness KMS 8.26N/mm
• Compliance CMS 121µm/N
• Equivalent volume to the compliance VAS 2.2L
• Mechanical resistance RMS 4.39N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 174mm
• Overall diameter 174mm
• Baffle cutout diameter 152mm
• Overall depth 104mm
• Flange thickness 15mm
• Mounting depth 89mm
• Volume occupied by the driver (estimated) 0.72L