If I need subs, I have plenty of Eminence 15" for that duty. I just want a high-efficiency 3 way system. At 98db, the 2240 would still be the least inefficient in the system. The midrange horn driven by Altec 288 is 115db/watt, and the tweet is around 107db/watt.
None of my single ended amp are more than 15 watts/chnl, so max excursion is not a issue.
Ron