Those are DVC subs. Get the dual 4-ohm version, and wire the coils in parallel, giving a 2-ohm load to the amp. That is if you get a mono block rated into 2-ohms. They are rated at 400 watts RMS, so a 400x1@2-ohm amp will work. Here you go: http://www.woofersetc.com/p3963/ZX4001--Kicker-1-Ch-400-Watt-ZX-Series-Amplifier.htm