I want to add a positive endorsement of this brilliant work by George Mills. Sadly, I have waited a long time to take advantage of what turns out to be a very easy mod to apply to Meridian`s configuration. After uploading the modified .msl, I thought music was plenty loud, very good on top end, and more engaging. After a while, I noticed I was paying more attention to the music. Something had changed for the really good. The 5500hc center in my 5.0 is better tamed and better handles complex music forms. Some screeching in both pop and classical music is gone. That is, female voices, violins, and similar are warmed a little…all by the db boost! I had thought, with a new 808.2i in play that the DSPs were the limiting factor in my system; not so. The extra boost from George`s mod was a BIG step forward.
Before and after settings (in case someone cares):
Left front from 0 to +3.0 db
Center from -.5 to 3.0 db
Right from -.5 to 3.0 DB
RS from -2.0 to 1.5db
LS from -1.5 to 2.0db
Should also mention that what George has done is not only technically brilliant (discovering SQ Meridian have chosen to leave on the table) but he has designed a very easy interface to make the change. If you are a fence sitter, get off, it`s very easy to get this BIG SQ improvement.

Roon, Technics SL10 turntable, Meridian 218, Jolida tube DAC, Nuforce STA 200 Amp and passive Swallow Acoustics ALS2 speakers