System Design Assistance

[struts]

Do you try to create the absolute best system, price is not a factor?
If this is the case I would look at a pair of full range speakers that can be quad amplify and would amplify them with 4 D250 bridged in mono and do all the filtering in the digital domain.

We are speaking here multiple hundreds of thousands euros or USD, if not more zeros, depending on the speakers.

I think this is what you mean Jean-Marie.  An active quad-amped pair of Vivid Spirits.  Pretty cool.