Specifications: Rage6P Frequency Response: 135 Hz ~ 6 KHz Sensitivity: 99.5 dB Nominal Impedance: 4 Ohm DC Resistance (RE): 3.6 Ohm Resonance Frequency (FS): 135 Hz Power Handling: 150 Watts QMS: 5.66 QES: 0.54 QTS: 0.49 VAS: 5.3 L Voice Coil Diameter: 1.5" Recommended cut off: BL^2/RE: 9.3 Depth: 3" / 78 mm Outer Dim (Crosssection): 6.85" / 174 mm Cutout: 5.78" / 147 mm