Skar Audio SDR-10 D4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 6.08
• Electrical quality factor QES 0.68
• Total quality factor QTS 0.61

Large signal parameters

• Maximum linear excursion xmax 13.5mm
• Air volume displaced at xmax VD 403cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.8Ω
• Inductance (1kHz, in series, estimated) LE 4.93mH
• VC Diameter 63.5mm
• Winding material Copper

Magnet

• Force factor (in series) Bl 21.8N/A
• Motor constant Bl/√RE 8.36N/√W
• Diameter 155mm

Diaphragm

• Effective diameter 195mm
• Effective area SD 299cm²
• Moving mass MMS 189g
• Moving mass (without air load) MMD 185g
• Material Pressed Paper

Suspensions

• Stiffness KMS 11.5N/mm
• Compliance CMS 87µm/N
• Equivalent volume to the compliance VAS 11L
• Mechanical resistance RMS 7.61N·s/m
• Surround material Foam

Dimensions

• Nominal diameter 10″
• 261mm
• Overall diameter 261mm
• Baffle cutout diameter 232mm
• Overall depth 178mm
• Flange thickness 22mm
• Mounting depth 156mm
• Volume occupied by the driver (estimated) 2.6L