If I remember correctly, the Maggie 1.6s are BiWired. If that's true, then you'd be much, MUCH better off using each of (4 of) the Classe's channels individually in a passive Bi-amp configuration. Specifically, you'd use one channel for the bottom and one channel for the top of each speaker. Speaking in practical terms, this puts less of a nasty load on the amp, while effectively getting much more useable power to each speaker than if you fed it with conventionally with just one "big" bridged channel from the same amp. Hope this helps.
Best, Joe