Thank you for your suggestion. I am a bit apprehensive about using ribbon drivers for several reason:
Firstly, my listening room is asymmetrical with one side with a partial corner thus being likely problematic;
Secondly, the size of the Magnepans will be difficult to deal with;
Thirdly, I’ve used ribbons in the past and found them to be somewhat difficult loads to deal with. They tend to be rather inefficient and must therefore handle very high currents since their actual impedance is very low on the ribbon side of the transformer.
I think I’d like to stick with more traditional drivers.
What are your thought regarding Vandersteen 3a signatures?