1400 Watts Peak Power Handling/ 700 Watts Continuous Power Handling/ 4 Ohm Impedance/ Large Neodymium Magnet/ Very Low Carbon Content CNC Machined Plates/ CCAW 4 " Voice Coil/ "Boundary Free " IIR Rubber Surround/ Exponential V-Cone With Optimized Geometry/ Very Acoustically Transparent Anti-Resonant Aluminium Alloy Basket/ Black Finish