[Mark Seaton]

Sonnie,

An IB is very efficient down low, which means that it doesn't take nearly as much power to reach the same output down low as in a small sealed box. In a sealed/IB system, excursion is output. You don't have one without the other, and 2x the excursion yeilds 6dB more output at a given frequency. I haven't modeled the drivers up yet, but I doubt you would need two of the EP2500's. Your money is typically much better spent on drivers than amps here.