Is there any safe way to double up speakers on my AV receiver?
well, one thing that you could do is send an aux output on your current amp to a secondary amp in that distant part of the “L.” What you’d be doing is getting a cheap amp that will send DTS or Dolby 5.1 data to a set of speakers (to power the second set), and then just send a feed from the primary amp to the secondary amp. Voila. Surround sound all over your house. The only negative thing I can think of would be any latency issues with a secondary amp. But I cannot believe that this would be much at all.
Thanks, I really appreciate that. I was aware of the “second zone” feature, but while I’ve never used it, I was hoping to eventually use it as it was intended and hook up something like a set of outdoor speakers on the patio. (Plus, the way the room is set up, you would never really play a separate sound source into the same space, so it would be kind of wasting that capability.) As for limiting the volume, that should be fine–I bought the Marantz to get really nice, clear sound at “normal” levels, not to shake the windows. (The main reason to double the speakers would be to be able to fill the odd-shaped space more evenly at normal volumes, without having to crank it up.) Does the serial/parallel hook-up make any difference?