The millenium is not as an exact electronic match for the OEM tweeters, it's less sensitive for one so it's not really a direct replacement.

You can however, do a calibration on the speaker to raise the overall tweeter level by 1-2 dB. (which is not the same as using treble on the remote) to compensate.

It is a marginally "better" tweeter, I have used it elsewhere compared to non milenniums (Linkwitz Orions and some other builds) but it is not really worth double the price of the Non Millenniums as the differences in sonics were very small.

Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.