Of the various Klipsch speakers that I have, my 89 Heresy's don't sound all that great either. Once I added a subwoofer, the sound was much more pleasing, and seemed to have a better balance in my 11 x 18 carpeted basement room. I've had them in corners, up on stands, tilted up, pointed in, but found that I needed the sub for them to perform. Unfortunately, poor recordings often sound much worse on Klipsch speakers, probably because they are so efficient and reveal warts in the performance.
You got a great deal @ $100, and hope you can make them work for you, as they can sound good, as many will attest.
NP - Scatterbrain - Here Comes Trouble
Dale B.