Features 1.5″ (38.1mm) Midrange voice coil High-intensity NEO ring magnet IP65 rated weather resistant Carbon fiber cone Cloth surround Stamped steel basket Wide dispersion 1″ aluminum dome tweeter Protective Grill Specifications Resonant Frequency (fs) 101.9Hz D.C. Voice Coil Resistance (Re) 3.2Ω Mechanical Quality Factor (Qms) 6.52 Electrical Quality Factor (Qes) 0.337 Total Quality Factor (Qts) 0.32 Compliance Equivalent Volume (Vas) 3.0L Mechanical Compliance (Cms) 0.27 mm/N Nominal Impedanc