Erhm.. Alpine is just as bad as Rockford amps FYI. There both middle of the road. You want a mono amp, class D amplifier.. don't bother with 2 channels and all of that, that's not what their made for. IMO i would go with this
http://www.sonicelectronix.com/item_...mpaign=froogle
Memphis makes solid amps and that will bench at a true 500watts.
Wait... are these woofers DVC or SVC? SVC.. if you wire them in parallel you will have a 2 ohm load.. If they are DVC then, if wired in parallel, they will be wired down to a 1ohm load.