PHL audio 3900-2

• Sensitivity (1W, 1m, infinite baffle)SPL1W94.2dB
• Frequency response50 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air)fS56Hz
• Mechanical quality factorQMS4.71
• Electrical quality factorQES0.18
• Total quality factorQTS0.18

Large signal parameters

• Maximum linear excursionxmax4.5mm
• Maximum excursion before damagexlim12mm
• Air volume displaced at xmaxVD139cm³
• Power handlingP400W
• Program powerPmax800W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE5.0Ω
• Inductance (1kHz)LE1.43mH
• VC Diameter77mm
• Winding heightHVC17mm

Magnet

• Force factorBl22.7N/A
• Motor constantBl/√RE10.2N/√W
• Air gap heightHAG10mm
• Diameter204mm
• MaterialFerrite

Diaphragm

• Effective diameter198mm
• Effective areaSD308cm²
• Moving massMMS53.5g
• Moving mass (without air load)MMD49.4g

Suspensions

• StiffnessKMS6.67N/mm
• ComplianceCMS150µm/N
• Equivalent volume to the complianceVAS20.3L
• Mechanical resistanceRMS4N·s/m

Dimensions

• Nominal diameter10″
• 250mm
• Overall diameter255mm
• Baffle cutout diameter229mm
• Overall depth131mm
• Flange thickness11mm
• Mounting depth120mm
• Volume occupied by the driver2L
• Net weight8.2kg