PHL audio 4031

• Sensitivity (1W, 1m, infinite baffle)SPL1W94.4dB
• Frequency response40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air)fS44Hz
• Mechanical quality factorQMS5.36
• Electrical quality factorQES0.29
• Total quality factorQTS0.27

Large signal parameters

• Maximum linear excursionxmax7.5mm
• Maximum excursion before damagexlim14mm
• Air volume displaced at xmaxVD404cm³
• Power handlingP500W
• Program powerPmax1000W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE5.6Ω
• Inductance (1kHz)LE1.24mH
• VC Diameter77mm
• Winding heightHVC20mm

Magnet

• Force factorBl20.5N/A
• Motor constantBl/√RE8.66N/√W
• Air gap heightHAG10mm
• Diameter204mm
• MaterialFerrite

Diaphragm

• Effective diameter262mm
• Effective areaSD539cm²
• Moving massMMS78g
• Moving mass (without air load)MMD69.3g

Suspensions

• StiffnessKMS5.88N/mm
• ComplianceCMS170µm/N
• Equivalent volume to the complianceVAS70L
• Mechanical resistanceRMS4.02N·s/m

Dimensions

• Nominal diameter12″
• 300mm
• Overall diameter307mm
• Baffle cutout diameter282mm
• Overall depth142mm
• Flange thickness13mm
• Mounting depth129mm
• Volume occupied by the driver2.7L
• Net weight8.9kg