Sound Town CARME Series Powered PA Speaker and Subwoofer Combo Set with One 12” PA Speaker, One 15” Subwoofer, One Subwoofer Pole, Black (CARME-112BPW15SPW) - Walmart.com
DAP-Audio MI-152B 15" Dual coil Bass 300W 2 x 4 Ohm - Black - Light Sound Pro
BOSS AUDIO SYSTEMS 12 in. 1600-Watt 4 Ohm SVC Car Audio Power Stereo Subwoofer P12SVC - The Home Depot