Huh? Bridging the amp doesn't change the speaker's impedance. I would suggest contacting Classe and asking them if the amp can drive a 4 ohm load properly. However, if it's driving them now, it should still do so bridged.
Running 4 ohm speaks on bridged amp...ok?
I am contemplating using a Classe CAV-75 to drive a pair of Magnaplanar 1.6 speakers. Since the Maggies need lots of power, I plan to bridge two of the amp's channels to 150w. However, since these speakers are already 4 ohm, does the bridging effectively make them 2 ohm, and can the amp handle it?