Magnepan 1.7 too bright, HELP

Maggies by nature are on the bright side of the spectrum. The tweeter is a midroscope that will reveal all before it.
A couple of tweeks may help however changing components appears to be the issue.
I agree about using a sub to even out the freqencies will reduce the brightness.
Not all panel speakers are bright. Apogee, Soundlab and Analysis are not.
if it were me a CJ amp and a tubed DAC or CDP would be the way to go.
Maggies just sound more natural with components that are rich or warm in character. That tweeter will never sound better.

Agreed, my CJ MF 2300A with a Mapletree 2A SE preamp sounds very natural and musical, never bright or fatiguing. System matching is very important as is fitting a system to one's own listening preferences.

A good class D power amp of same or higher power would probably fix the problem.

A cheaper thing to try beforehand might be to swap in a pair of inexpensive MIT Terminator ICs for the Monsters and see if that helps. If not, probably still a good investment down the road.

Has anyone tried Sound Anchor stands on the 1.7's or similar? Any difference in overall sound?

solution: sell me your speakers for a great price!
check the date of build on your speakers. i was told by a dealer that there were problems with his original 2011 1.7 demos, but no problems with subsequent sales w/newer panels. i imagine he sold the demos off slightly cheaper & replaced them with ones of 6/2011 vintage. he didn't know if others were lemons but he wasn't happy with his demo-obviously, his customers still ordered 1.7's. hmmm-maybe our ears aren't really that well trained as we think when hearing such well-reviewed/well thought of speakers??? most surprising to me was deciding not to return the demos to magnepan with his complaints?