Focal Sub 10

• Sensitivity (1W, 1m, infinite baffle) SPL1W 80.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 21Hz
• Mechanical quality factor QMS 6.88
• Electrical quality factor QES 0.57
• Total quality factor QTS 0.53

Large signal parameters

• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz, estimated) LE 2.32mH
• VC Diameter 50mm

Magnet

• Force factor Bl 11.6N/A
• Motor constant Bl/√RE 6.39N/√W
• Diameter 140mm

Diaphragm

• Effective diameter 200mm
• Effective area SD 314cm²
• Moving mass MMS 180g
• Moving mass (without air load) MMD 176g
• Material Polypropylene

Suspensions

• Stiffness KMS 3.03N/mm
• Compliance CMS 330µm/N
• Equivalent volume to the compliance VAS 45L
• Mechanical resistance RMS 3.45N·s/m
• Surround material Butyl

Dimensions

• Nominal diameter 10″
• 271mm
• Overall diameter 271mm
• Baffle cutout diameter 236mm
• Mounting depth 111mm
• Volume occupied by the driver (estimated) 1.9L
• Net weight 4.5kg