I have a Bose Companion 3 for my computer, and a separate pair of Bose "double cube" speakers. Is it possible to connect the double-cubes to the Companion 3? If so, what's the correct way to wire them. (EG, the Companion 3 speakers connect with a single RCA plug, whereas the double-cubes use regular speaker wire, so I suppose I'd need to figure out which wire is which, if you get my drift....) Many thanks in advance for any guidance on this! Best regards.