DS18 TM-SN18 Troublemaker 18-Inch SPL Competition Neodymium Magnets 5,000 Watts RMS 7,500 Watts Max Subwoofer, Set of 1 FOR FANATICS AND AUDIOPHILES: The Troublemaker is an 18" SPL Competition Grade Subwoofer. See display picture for more specs AMAZING POWER: 7,500 Watts Max Power and 5,000 Watts RMS Power HIGHEST QUALITY COMPOSITES: 6 High Strength Neodymium Magnets, 4" Black Aluminum 6-Layer Voice Coil, 6-Layer Spider WARNING: This subwoofer can withstand sound pressure levels above 170dB WARNING 2: You might piss off all law enforcement entities nearby