Rockford Fosgate T1D415 Power 15" T1 4-Ohm DVC Subwoofer Features 3 Inch Copper Clad Aluminum Voice Coil Die Cast Aluminum Frame SWIFT Selectable Woofer Impedance Fused Terminal VAST Vertical Attached Surround For Increased Cone Area 1000 Watts RMS 2000 Watts Peak Power Rating 15-inch, dual 4-ohm subwoofer with 2000 watts maximum power handling (1000 watts RMS) Kevlar fiber reinforced paper cone with anodized aluminum dust cap and voice coil former High-temp voice coil with spun-laced Nomex re-inforcement collar; inductive damping heat sink Optimized and matched magnetic and complicance geometry; optimized pole piece and spider venting One-year limited manufacturer's warranty