Speakers sound too bright.

My personal opinion is you have a very open and telling speaker system now. I think you are hearing a problem somewhere else in your system 

 Break in will help but basically for me it is rare to go from ugly to great. Certainly new speakers sound held back and times settle in and detail comes out but a drastic change is rare in my mind. Don't get me wrong there can be huge changes but just not from unacceptable bright to wonderful perhaps on the first couple of hours. If you have a friend close by that can bring some different wire or components 

 I would try that. 

Good luck regards. 

Y net is your speakers are more resolved than a bunch of your equipment. 

If after break in your still not happy, try some MIT cables or Transparent , these are what we use to soften up a bright sound.

Matt M

I had a pair of these. While the bass and mids were very good I found the motion tweeters to bright. Point them forward and not towed in. Also put a piece of fabric or foam on the tweeters. It worked for me until I could sell and move up. I found soft dome tweeters are more to my liking. 

Some folks have a higher sensitivity to high frequencies.

Likely best to return speakers, then get something maybe with a soft dome tweeter

Sorry to hear your first reaction. But, you really need to get them broken in. I would put them pointing at each other and play them 24 hours a day for a week. As loud as possible without disturbing you. 

The most likely problem is breakin. Then as someone pointed out, they may be a bit sizzly. If so, tube equipment would be  much warmer. Typically, speakers first, then upgrade electronics to optimize... but you want to like the speakers. Did you hear them before buying? You liked them?