GENERAL  SPECIFICATION:Nominal  Diameter : 8"(203)Max  Power   Handling : 200WRMS Power  Handling : 100WFrequency   Response: 125Hz-9KHZNominal  Impedance : 4ΩSensitivity : 97dBMagnet  : FerriteVoice  Coil  Diameter: 1.5"Voice Coil   wire : CCAWMOUNTING   INFO:Overall  Diameter : 8.18"(208.0mm)Front  Mount  Baffle  Cutout:  734"(186.5mm)Mounting  Depth: 3.30"(84.0mm)Overall   Depth: 3.54"(90.0mm)THIELE-SMALL PARAMETERSEquivalent  volume  Vas: 14.52LFree  Air  Resonance  Fs: 98HzMechanical  Factor Qms: 4.69Electrical   Factor    Qes: 0.71Total   Factor   Qts: 0.62Cone   Area  Sd: 216.4cmMechanical  Mass  Mms:12gBI  Factor   BI:5.76TmDc  Resistance  RE:3.2  Ohms