CVX10D4 | 10" Car Audio Subwoofer, 600W, Dual 4ohms, Single - Mid-Level Subwoofers
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
DC Audio Level 2 12 M4 600w Subwoofer - SSA STORE
Flatlyne 15" 600W Subwoofer by Incriminator Audio® - SSA STORE
NEW AB 10" SVC SubWoofer Speaker.600w 4ohm.bass woofer.Replacement.Audio.10inch | eBay