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
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!!!
Ok, I took another look at this thread. If you want the type of sound of your Martin Logans on a bigger scale you probably need something like SoundLab A3, A1 or U1's. Some big amps and maybe a sub to complete the package. Contact SoundLab and see what they say.

The Klipschorn will be dynamic and fill the space, but they won't have the speed and transparancy of the ML's or SoundLabs.