How did you get 400 to each?
That amp only produces 360x1 RMS. Which puts you at about 180 a piece.
I honestly think Delay was just blowing smoke when he listed these...
Your gonna need something a bit more powerful then that...
Anyways were you planning on getting D2's or D4's. That makes quite a bit of difference.
If your going D2 It says you can use that nine2x, which would probably be your best bet. But You will have to run them serpeately on each channel, I think... correct me if i'm wrong someone.
Edit: Woops.. I suppose that would be pretty much perfect. You would have 300x2 at 2ohms which is rated at 12.5V. SO at full power you should be pushing 300+ to each driver, which would be perfect. In my opinion that would be the way to go.
Or you can simply just find a nice 2ohm stable amp that puts out around 600-800watts RMS.
If you go with two D4's your going to need either a 1 ohm stable mono amp,or a 2 channel bridged at around 600-800RMS/continuous power rating at 4 ohms.
Just let me know what you would be interested in, and I'll see if I can help you out in finding one.