I have recently come across five ksm 15 wedges along with four kp250's, and two kp450's from a club in pittsburgh called "nicks fat city". They closed down and when "diesel" opened they took all the speakers and put them in the basement. About 2 weeks ago I answered an ad on craigslist for "free klipsch speakers". I was the first of 30 emails. The kp250's are minty underneath the grill, I kept 2 and gave 2 to a friend. I believe they were the PA version of cornwall. They are the ones with no handles or corner protectors, mine will soon have both.
The ksm15's have the k43k 15's, one handle, no speakerstand hole and dual banana/ 1/4" inputs. I have stolen the k43k's and put them into 2 dual15 cabs, the kp-450's. Were the kp-450's a full range cabinet used with an external horn? I cannot find any info on these. In my case they now posess some extra bracing inside and I have removed the crossover. I read somewhere the k43k's can handle 400watts. What is their peak? I plan on putting around 1500 watts into each cabinet. I do sound for drum'n'bass shows, the kids these days like a lot of bass.