Pyle 6.5 in. 300-Watt Car Mid Bass/Midrange Subwoofers Sub Power 2-Speakers 2 x PLG64 - The Home Depot
Boss Audio Systems P694c Phantom 6 X 9 Inch 800 Watt 4-way 4 Ohm Full Range Car Coaxial Stereo Speaker Set With Mylar Dome Tweeters, Pair : Target
Wholesale Best Price Fiberglass 30W 4 Ohm 6 Inch Bass Frequency Woofer Speakers For Home kicker big subwoofer active amplifier board From m.alibaba.com