KICKER CompC 15 Inch Dual 4 Ohm 600W RMS Power Car Audio Subwoofer, Black - Walmart.com
Amazon.com: KICKER 43C154 Comp 15" 500 Watt SVC 4-Ohm Car Audio Subwoofer Sub : Electronics
PAIR 7" Kicker Street Series Square Midrange Speakers, 50w-250w 4-Ohm (ST7MR4) | Custom Speaker Pods
KICKER Solo-Baric L7S 15" Dual-Voice-Coil 2-Ohm Subwoofer Black 44L7S152 - Best Buy
Amazon.com: KICKER (2) 44CWCS154 CompC 15" 1200w Single 4-Ohm Car Subwoofer Bundle with Dual Sub Box Enclosure Installation Kit and Rockville RD15 Dual MDF Sealed Car Sub Enclosure Box USA (4 Items) :