Specifications: Rage 8 D2 Frequency Response: 10 Hz ~ 500 Hz Sensitivity 2.83 v: 83.8 dB Nominal Impedance: Dual 2 Ohm DC Resistance Series (RE): 1.9 Ohm Resonance Frequency (FS): 39.3 Hz Power Handling: 300 Watts Peak Dynamic Power Handling: 600 Watts QMS: 5.64 QES: 0.5 QTS: 0.46 VAS: 5.4 L Voice Coil Diameter: 2" CMS: 100 um/N MMS: 154.8 g BL² /RE: 79.7 Magnet Slug Weight: 100 Oz XMAX: 15 mm / 0.59" Displacement: 2 L / 0.073 cu.ft