Cheap volume for large room


I just moved into a loft style condo and am dealing with a huge room - 45' l x 24' w x 20' high. It is eating my ML ReQuests for breakfast and I'm thinking I need a bigger, taller, cheap set of cone based speakers to compensate. I think good clean stereo in a small room is killer but this room kicks sound quality down the priority list.

After poking around I found the PSB T8. They look perfect with 3 tweeters and 3 subs but the model is new and a bit out of my range at $4k+ (T8) used.

http://www.avrev.com/gifs/psbplatinum/T6.jpg

Anyone know older model speakers similar to the PSB T8? Or just models that move a lot of air for this huge space?
winchell
Klipschorn is a particular model from a paritcular manufacturer of speakers incorporating a horn loaded design. The Klipschorn's are legendary. They also prefer corner placement which is not a requirement of all horn loaded designs. Horn loaded designs are notable for their ability to play quite loudly despite modest power requirements. They often have other sonic charateristics that I personaly find objectionable.
If you have two corners, then get some Klipshorns. Esentially the room becomes part of the bass drivers folded horn and you are literally standing in the speaker. They have quite the following and you can play with low wattage tube amp designs and tweak them to your liking.

Your neighbors may not like you though ;)
Tyler Accoustics...always some used or on sale items and a pair of 7Us or better, Linbrook system II should do the job well. Both are currently on sale on Agon for less than $3500. (not affiliated with Tyler by any means...just the best value on speakers today, period).
Your room is 21,000 cubic feet. None of the speakers recommended are designed for full range reproduction in such a large space. Your room is three times larger than what most manufacturere would consider a large room. Your goal of room filling sound without a separate subwoofer is unrealistic at your budget level. I COULD BE WRONG, but you should contact some of the manufacturers named and ask them about recommended room size and sould levels.
So I need a sub or two.... ok I'm gonna try a couple Earthquakes Supernovas since it'll be cheaper than replacing the MLs. Klipschorn looks intriguing so maybe I'll look for somewhere to listen.

Thanks for all the suggestions!!!