A:
The Solo is a speaker system specifically meant for a TV. It isn't an amplifier and there is no provision for connecting it to anything but the input on or through components to a TV.
If I were going to put any receiver, Bose or otherwise, outdoors, whatever it was rated for, it would live inside some kind of weatherproof housing, wired inside of fully sealed PVC conduit. Those people at BB in the blue shirts are pretty good. Talk to one of them.