Sundown Audio - U v.2 18 U Series 18" Subwoofer Dual 4 Ohm (Open Box) - Alternator Outlet | Mechman High Output Alternators Authorized Dealer. Fast Ship Times, Made in the USA!
Amazon.com: SA-10 D2 CLASSIC - Sundown Audio 10" Dual 2-Ohm 750W RMS SA Series Subwoofer : Electronics