So...trying to upgrade for larger venue's. I have 3 L1 Compact systems that I have been connecting together. Am thinking about getting 1 F12 812--the loud speaker portion only and getting 1 S1 Pro for some outside small ceremonies rather than switching out one of the L1's on the fly...I have some other kinds of speakers, but am realizing bose is the only way to go. So..can I connect jut the 1 F12 812 loud speaker to 2 of the L1 Compacts that I use...and use the other L1 for outside or use the S1 outside...can the S1 also be connected to the 3 L1's as an alternative to using the F12 812 loudspeaker. Thank you!