My experience is that instead of accentuating the virtues of each you bring forward the bad side of both. The way you propose to do it will be very bad if I understand it properly as the crossover point will be god knows where and how will you achieve the right sound balance between the speakers. Are you using an electronic crossover with level controls? Can you do it? Sure. Should you do it? I wouldn't do it but it is your money.
Speaker mash up ?
Is it possible to use two different speakers at once. Could i use Magnepan 1.6 for the highs and proacs for the lows ? I was thinking of running biwire cables . Highs to the magnepans high inputs and the lows to the proacs low inputs. I do not have the maggies yet to test ,but plan on getting a pair. Just curious if anyone has thought about this or even tried it .