PHL audio 3940-2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 120 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 90Hz
• Mechanical quality factor QMS 2.98
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 2.5mm
• Maximum excursion before damage xlim 4mm
• Air volume displaced at xmax VD 83cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 1.15mH
• VC Diameter 77mm
• Winding height HVC 12mm

Magnet

• Force factor Bl 21.1N/A
• Motor constant Bl/√RE 9N/√W
• Air gap height HAG 10mm
• Diameter 204mm
• Material Ferrite

Diaphragm

• Effective diameter 205mm
• Effective area SD 330cm²
• Moving mass MMS 38g
• Moving mass (without air load) MMD 33.6g

Suspensions

• Stiffness KMS 12.5N/mm
• Compliance CMS 80µm/N
• Equivalent volume to the compliance VAS 12.7L
• Mechanical resistance RMS 7.21N·s/m

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 255mm
• Baffle cutout diameter 229mm
• Overall depth 131mm
• Flange thickness 11mm
• Mounting depth 120mm
• Volume occupied by the driver 2.2L
• Net weight 8.2kg