Klipsch Forte ii too bright, or is it my room ?

I read many folks recommending tube amps w/ the OPs Fortes. I've used a modern tube amp w/ my Forte I speakers and it's not a magic bullet for Klipsch Heritage loudspeakers. It can still sound bright because of the extra air and spaciousness from my tube amp which multiplies an already lively speaker. I find room placement and a less lively large room than I have plays a very important part. The tube amp is beautiful w/ Klipsch but won't necessarily tame the highs if there is other factors. I also find the my Linn K20 low capacitance speaker cable is a perfect match w/ my Klipsch.

Individuals may have different capacity for what they perceive as brightness. For sure OP running wrong amp in wrong room, tube amp and some room treatments a good start if keeping Klipsch.
I have 1989 Klipschorns, had to redo the whole thing, but then I'm extremely sensitive to timbre anomalies.

Really good thoughts, all of them.  Refreshing not to hear any “mid-Fi” comments as well.  Certainly with any system it’s a challenge to select the right speakers with the proper amplification.  You didn’t mention which pioneer you had.  Some late sixties early seventies Pioneers were very good sounding. I have always admired horn loaded speakers, but have never owned a pair.  I’ve always noticed them being demonstrated with strings, piano trio, or solo instruments in which they almost always excel for their life like qualities.  They do sound ‘live’, ‘dynamic’ and have incredible impact.  But when I feel like listening to Presence by Led Zeppelin, their appeal goes away and the headaches begin.
That’s why I have always used EPI, AR, Definitive Technologies, B&W, and recently Focal.  You can insert almost any sealed enclosure speaker with a soft dome tweeter here.  They are listenable over a broad range of music without much effort.

A carpet would certainly help. If you love the speaker and your electronics  you can make it work with your system.  Don’t give up! Fire up that graphic equalizer and tame the harshness, or dial back the highs with your tone controls. 
You don’t have to go tubes.  I recently heard the latest Hersey being driven by an ancient Sansui 4000 receiver, playing some Miles Davis and female vocal Lps. Wow!  I’m still thinking about how good the Klipschs sounded.  They were sweet, powerful, laidback, dynamic and really life like.  Makes me want a pair...for now anyway. 
Best!
Norman 

Get an old fisher 500c, sansui 1000a or a dynaco st 70 and those klipsch will sound good. Any ss will scream till your ears bleed. Only tubes with fortes. 

Tubes are the way to go.

I pulled the horns out of my Cornwalls and wrapped them in twine after spraying them with some kind of damping spray. Prior to doing this they rang like bells. After, sounded waaaaaay better.