Two months ago I upgraded from MA GX200 Gold (which, though modest, were a lot of fun with the new Naim system, which itself was a huge improvement over the previous Naim CD5i with NAD/Rotel amps) to massive Sehring Audio S913 (pics, and specs) and initially had a similar impression. The Sehrings have very low distortion and are much, much better speakers all around.
I realized that some tracks seemed to have lost a bit of their drama. E.g. I had always thought that the dramatic distortion in the bass in James Blake’s Limit to Your Love was part of the recording, but it turned out that in reality there’s less in the recording than I thought, and the rest was coming from the speakers. And I guess much of the drama was in hearing how the speakers were being pushed toward their limits. Similar for some voices, where the lower distortion initially felt like a loss of urgency.
It took me a week or two to get used to this. But! Since then I have listened to so much music and have found that the quality reproduction, the bass control, punch of drums, and mid-range clarity, especially in voices that are now singing right there in my room, is hitting my emotions hard.
I could not be happier, there’s detail and emotion, and I am jumping around or having a tear in my eye more than I ever did. I hope it goes this way for you, too. It might, however, depend on the character of the new speakers, too. I have never heard Spendors, but from what I read they were often characterized as a bit too polite for some people. This may be great for some music, but maybe not for all.