Take a look at the JBL Tent Sale. You can get a pair of 16 ohm 2226's for $220 delivered in the 4648 box. Or you can do what I did and order 2 3677 Thearter Systems for $120 each. You get a pair of 2035 woofers which if you run them in a box program are very similar with the 2226. They also have a very flat impedance curve if you look at the 4638 data sheet. The point is you get the pair woofers and 2416 compresion drivers for what you are willing to spend on a single driver.

http://www.jblpro.com/Tent_Sale

Well good luck