BOSS Audio Systems BE8D Elite Series 8 Inch Car Audio Subwoofer - 600 Watts Max, Dual 4 Ohm Voice Coil, For Truck Boxes and Enclosures, Hook Up To Amplifier
Pyle PLPW6D 6In 600W Dual 4 Ohm Car Audio Stereo Speaker Subwoofer, Black - Walmart.com
Flatlyne 12" 600W Subwoofer by Incriminator Audio® - SSA STORE