For all intents and purposes, the amp is "seeing" the same load as a single 2226H when it's driving a 4648a-8 system containing a pair of 2226J's. The MAIN reason I'm running the dual 2226J's is ECONOMIC. But it still takes the pair of them per side to do the work of a single 2035H or 2226H. There is no inherant "benefit" running dual 16 ohm drivers vs. a single 8 ohm one in this specific case. UNLESS 1200 watt power handling capability is needed:)

Dual woofer DOWNSIDE is the larger enclosure needed, the extra weight involved, the "notch" at 820Hz.

I'm not sure about what a SET will do with the back emf...burp it back into the HF driver like a chirping piezo?:(

Dual woofer UPSIDE...hmmm...looks cool? Positions the HF horn at a GREAT height relative to the listener. Oh yeah, and the "power response" matches that of a 90x40 horn at 800Hz. Whatever that means:) Sam