I would advise that for the original speaker mentioned a 4430, a nice 500 watt amp would be the best bet. Of course any amp 200 watts or better is going to be enough to produce decent listening levels and beyond if needed. But the more power if used sensibly would provide more head room and better control over the drivers. this would be a big benefit. The peaks can be demanding so having the power to handle it with out clipping is the ticket....IMO