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

Klipsch sound better with tubes more than ss, and I have owned Khorns, LaScalas, Hersey II's, etc. One thing about Klipsch, people either love them or hate them, there is no in the middle. 

I like vintage audio. See my pics. 

I have Klipsch Chorus IIs, which are similar to yours. I found that a Pioneer SX-1050 was one of the worst matches, and it had been completely restored.  I sold it.  Too bright, and listening fatigue after < 30 minutes.

Sansui (60/70's) is an incredible match, as is quicksilver tube gear.  I like Marantz, but prefer Sansui.  With regards to gear made this decade, I tried Cambridge audio and thought it too was a poor match. Pass Labs is incredible (I built the 8WPC Amp Camp Amp, which is more than enough for your 80db).  As far as restorations, I'm in the boat of replacing all electrolytics, known noisy or problematic transistors/diodes and updated small electrolytics with film caps.  But others don't like to change anything that isn't broke.  When it comes to 45-50 year old E-caps....those folks aren't getting all the highs.   

Actually, without the mods, while I might not have been in hate group, call me lukewarm. Even in stock form I could hear the good and potential for better, even great. I'm sure being long time modder allowed me to hear potential. While my mods are not possible for many, there are some more simple mods that are effective in taming brightness. Yes, horn speakers are susceptible to tonal/timbre anomalies, but so are a lot of speakers.

I'd never advocate giving up on Klipsch Heritage, providing one is willing to work a bit. I also realize its not everyone's cup of tea, no harm, no foul.

Klipsch Forte’s and Heresy’s sound great if you’ve lost most of your HF hearing, otherwise they’re almost universally panned by serious reviewers. 

This isn’t even opinion, I don’t think Klipsch has ever marketed them as accurate.

I should mention that I also updated the entire crossovers -> Crites boards in 2017.  Was a substantial improvement and heartily recommend. I also replaced the diaphragms in the squawkers, but that might not be the route you should go until you balance out the room and gear.

I also heartily agree with others that room treatments will go far and should be considered regardless of gear changes.  

With regards to @wilderness comment to put the speakers close to wall, my experience would contraindicate that.  The forte IIs have a passive radiator in the back that tends to muffle the hell out of bass if placed too close to the wall and corners. I am usually about 2-3 feet into room.