Focal FLAX EVO Sub P 20 FE

• Sensitivity (1W, 1m, infinite baffle) SPL1W 82.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 38.5Hz
• Mechanical quality factor QMS 5.50
• Electrical quality factor QES 0.61
• Total quality factor QTS 0.56

Large signal parameters

• Maximum linear excursion xmax 10mm
• Air volume displaced at xmax VD 216cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 1.7mH
• VC Diameter 38mm
• Winding height HVC 28mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Flux density B 0.75T
• Force factor Bl 11.5N/A
• Motor constant Bl/√RE 6.24N/√W
• Air gap height HAG 8mm
• Diameter 120mm
• Height 32mm

Diaphragm

• Effective diameter 166mm
• Effective area SD 216cm²
• Moving mass MMS 95g
• Moving mass (without air load) MMD 92.6g
• Material Flax

Suspensions

• Stiffness KMS 5.56N/mm
• Compliance CMS 180µm/N
• Equivalent volume to the compliance VAS 12L
• Mechanical resistance RMS 4.18N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 8″
• 200mm
• Overall diameter 214mm
• Baffle cutout diameter 187mm
• Mounting depth 117mm
• Volume occupied by the driver (estimated) 1.4L
• Net weight 3.2kg