hifi engine

Marantz 4400 in 2ch-mode

I have this receiver for repair, and I'm wondering about connecting the speakers, when I use the stereo mode, because in the manual they say, that two amps are bridged. therefore, using the power mode switch, the ground of the (front) speaker terminals are disconnected internaly. So usually, (according to car-amplifieres) the minus of a speaker has to be connected to the other + terminal or what? And the other thing: Stereo left = remote ront and right = main front? I'm so confused. Something else: one of the amps has a little dc-offset, which disappears, when a speaker is connected. Can anyone help?
Cheers Chris