rooze, i think your problem is easy to understand (but not necessarily easy to fix). on the top end, i don't think it's the speakers -- those ribbons are so sensitive that any component in the chain may come out sounding bright -- look for digital jitter as a big potential culprit, as well as noisy power. the fact that recordings previously thought to sound great lost stature, and some previously thought to sound less-than-great gained stature, bears out that those ribbons are getting more of the recording to your ears -- i found a similar result when i got mine. especially some older recordings i considered uninteresting, especially live tracks, sprung to life. and over-produced, over-compressed, over-crisp stuff comes out sounding like that -- those types of recordings are voiced for boomboxes and car stereos, so they don't sound so great on revealing equipment. the solution, get some refined, sweet-sounding (tube?) equipment for playback -- try a monarchy (or other) jitter remover. how do they sound on vinyl?
next, on the bottom end, no one seems to be mentioning the cause -- namely that the dipole panel cancels out out bass frequencies, depending on proximity to the wall behind the maggies. solutions are tough -- move them out from the wall (but can they be moved far enough is the question); get rid of the wall ;-) or think of other ways to prevent the bass cancellation (may require modifiying your walls). in my case, i run the maggies full range and augment with a m&k sub crossed over low (50hz) and place optimally according to room dimensions for non boomy sound (at the 1/2 width and 1/2 length position) -- then i use digital eq to get rid of any remaining resonance problems. the results are non-bright, crystal clear, non-boomy full bass maggie sound.
next, on the bottom end, no one seems to be mentioning the cause -- namely that the dipole panel cancels out out bass frequencies, depending on proximity to the wall behind the maggies. solutions are tough -- move them out from the wall (but can they be moved far enough is the question); get rid of the wall ;-) or think of other ways to prevent the bass cancellation (may require modifiying your walls). in my case, i run the maggies full range and augment with a m&k sub crossed over low (50hz) and place optimally according to room dimensions for non boomy sound (at the 1/2 width and 1/2 length position) -- then i use digital eq to get rid of any remaining resonance problems. the results are non-bright, crystal clear, non-boomy full bass maggie sound.