I want to use my SWR WM's 12 as my main amp and carry with me my Nemesis 15 combo when needed to use as an extension cabinet. I know it can be run thru the effects loop if needed. How exactly is this done? Is it just SWR out to Nemesis in and Nemeis out to SWR in? And do I need to use speaker cables or instrument cables? Additionally, my Nemesis has a "Speaker Out" jack for extension cabs. Probably a rhetorical question but can a speaker out be used as a speaker in? Thanks.