I've seen mismatched biwire/biamp situations work with Magnepan speakers.
With most time/phase coherent speakers it generally does not work well.
I tried a cable mismatch on Vandersteen 2c speakers and the results were flat. I invested in bi-wire (internal) cables and the speakers started to perform to their abilities.
If you are able to test them with matched cables vs unmatched and you like the sound of one over the other, you'll have a winner.
Hope that helps!
With most time/phase coherent speakers it generally does not work well.
I tried a cable mismatch on Vandersteen 2c speakers and the results were flat. I invested in bi-wire (internal) cables and the speakers started to perform to their abilities.
If you are able to test them with matched cables vs unmatched and you like the sound of one over the other, you'll have a winner.
Hope that helps!