PHL audio 3900-2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.2dB
• Frequency response 50 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 4.71
• Electrical quality factor QES 0.18
• Total quality factor QTS 0.18

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Maximum excursion before damage xlim 12mm
• Air volume displaced at xmax VD 139cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.0Ω
• Inductance (1kHz) LE 1.43mH
• VC Diameter 77mm
• Winding height HVC 17mm

Magnet

• Force factor Bl 22.7N/A
• Motor constant Bl/√RE 10.2N/√W
• Air gap height HAG 10mm
• Diameter 204mm
• Material Ferrite

Diaphragm

• Effective diameter 198mm
• Effective area SD 308cm²
• Moving mass MMS 53.5g
• Moving mass (without air load) MMD 49.4g

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 20.3L
• Mechanical resistance RMS 4N·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 2L
• Net weight 8.2kg