PHL audio 3820NdU

• Sensitivity (1W, 1m, infinite baffle)SPL1W94.7dB
• Frequency response50 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air)fS55Hz
• Mechanical quality factorQMS5.86
• Electrical quality factorQES0.19
• Total quality factorQTS0.18

Large signal parameters

• Maximum linear excursionxmax4.5mm
• Maximum excursion before damagexlim12mm
• Air volume displaced at xmaxVD160cm³
• Power handlingP400W
• Program powerPmax800W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE5.1Ω
• Inductance (1kHz)LE1.42mH
• VC Diameter77mm
• Winding heightHVC17.5mm

Magnet

• Force factorBl23.9N/A
• Motor constantBl/√RE10.6N/√W
• Air gap heightHAG10mm
• Diameter138mm
• MaterialNeodymium

Diaphragm

• Effective diameter213mm
• Effective areaSD356cm²
• Moving massMMS61g
• Moving mass (without air load)MMD56.2g

Suspensions

• StiffnessKMS7.14N/mm
• ComplianceCMS140µm/N
• Equivalent volume to the complianceVAS24.7L
• Mechanical resistanceRMS3.6N·s/m

Dimensions

• Nominal diameter10″
• 250mm
• Overall diameter255mm
• Baffle cutout diameter229mm
• Overall depth137mm
• Flange thickness11mm
• Mounting depth126mm
• Volume occupied by the driver1.2L
• Net weight5.3kg