Features N38 Neodymium Motor Design Pulp Fiber Reinforced Cone Multi-Layer Foam Surround Progressive Dampeners 1.5” ( 38 mm ) Dual 4 Ω Voice Coil Specifications Structure 6.5” (165.1 mm) Max Power 500 Watts Nominal Power 250 Watts Impedance 1.5" (38.1mm) Dual 3.2Ω Voice Coil PARAMETERS Resonant Frequency (fs) 50.997 Hz D.C. Voice Coil Resistance (Re) 3.2Ω + 3.2Ω Mechanical Quality Factor (Qms) 2.079 Electrical Quality Factor (Qes) 0.863 Total Quality Factor (Qts) 0.610 Equivalent Air Volume to C
