Bridged Center Speaker
Yes, I have a Belle Klipsch as the bridged center speaker between my Klipschorns.
I, originally, purchased my Klipschorns in '79, and, out of necessity, placed them along the short wall of my family room. I then moved to a home with a suitable long wall of 22 feet. I decided that Paul Klipsch must have known what he was talking about, so I made the investment and purchased the Belle. I have never had a moment's regret. The sound stage opened-up before my very ears, and the result was a three-dimensional image of wall-to-wall sound. If the bassoonist is a little behind and to the right of the flutist, that is where he appears in the sound stage.
If memory serves me correct, I think I recall that Paul Klipsch stated that the ideal set-up is two corner speakers, placed as far apart as possible (the further, the better), with a bridged center speaker to fill-in the hole.
Anyway, I have, over the years, heard many great speaker systems, and I always felt that, in comparison, my system held-up quite favorably, indeed.