Appearantly, the atlast 12 is rated at what I'd like to call a modest 300 RMS, and is a dual 4 ohm VC. So, you need an amp that does 600 watts at 4 or 1 ohm.
Heh, my Power Acoustik lying in the attic collecting dust does that. =p
Here, my sugguestion is to look for an amp that does 600 watts at 4 ohms, but it also 1 ohm stable. That way you have the power you need now, but room to grow. Box / subs / wires aside, we have alittle less than $300 to part with, yes?
Audiolife: Are they DVC? The explanations are confusing at best with the adjustable Qts.