I have them hooked up to a Onkyo TX-DS595 Receiver.

40'x40' room with a high ceiling and these speakers fill this room with sound easily. The music just feels like it flows out of them. The highs are so crisp and easy listening and the bass is rich. I absolutely fell in love with these speakers from the moment I first started listening to them. but at this time you can probably get a good buy on these. The thing which is cool about the newer ones is the floating grills. They sound just as good as the new klipsch SF series if not better. you've gotta turn the treble down quite a bit to be able to hang in there with em' Music in stereo is precise full and balanced with these. These speakers have amazing bass for 6 1/2's. Not a lot of companies in there class or price range can do it like they do, period. Now I have an SC-1 Klipsch center channel and quintet surrounds. I bought these because the tweeters were far better than the DCM's, everything else was pretty comparable. The music sounded clear loud and luscious. He played some Moby and Metalica off of a 70 watt Denon amp because I've got a Yamaha with 70 watts. I told the dude that I wanted a pair of tower speakers for less than $400 and just looked at a pair of the DCM's, he used to work there and was familiar with those. Sure enough, my eyes caught the Klipsch line up. The music he played was other worldy and dumb but they sounded great I contemplated buying them but then realized that I don't buy anything without first checking out Magnolia. First I went to Circuit City and listened to a pair of DCM short towers 10' 3 ways.

Klipsch kg 4.2