John, thanks for the detailed response. I think I am going to do what you suggested at the end of your post, which was my original plan, to utilize an inexpensive receiver connected to the pre-amp outs.
I am now thinking that based on the lay-out of my house and patio set-up, I will be able to set up the second receiver in the house, where it will be easily accessible to the screenhouse, and still protected from the weather. Now I just need to find speaker wire that can run 30-40 feet outdoors. Is there any such cable that can either be buried underground, or run along side electrical circuits inside buried conduit?
