Focal FLAX EVO Sub P 25 FSE

• Sensitivity (1W, 1m, infinite baffle) SPL1W 81dB

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.95
• Total quality factor QTS 0.78

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 381cm³
• Power handling P 280W
• Program power Pmax 560W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz, estimated) LE 2.33mH
• VC Diameter 38mm
• Winding material Copper
• Former material Glass Fiber

Magnet

• Force factor Bl 11.2N/A
• Motor constant Bl/√RE 6.26N/√W

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 190g
• Moving mass (without air load) MMD 185g
• Material Flax

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 25L
• Mechanical resistance RMS 7.16N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 260mm
• Baffle cutout diameter 234mm
• Mounting depth 88mm
• Volume occupied by the driver 2L
• Net weight 3.5kg