Then I'll further assume that those single voice coils are single 4 Ohm voice coils?
If so you're going to want an amp that outputs around 800w @ 2 Ohms.
You will achieve this 2 Ohm load by wiring your subs like so ~
Armed with your power requirements and the manner in which you need to wire your subs go find yourself an amp that fits both your needs and your budget. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif