This debate over self made speaker unit is like comparing apples and oranges. Who in the entire hifi business is designing the speaker units themselves and all the electronics in an active way?
Dynaudio do and the engineering of the drive units is very impressive and a major factor in why I use them, even the little ones have massive voice coils.
On another point, are the drive units Meridian uses built to spec or off the shelf?
The 70s/80s Meridian actives used Kef Drive Units that were off the shelf, B110B, T52 etc.
Steve.