Posted by Bob on May 27, 2000 at 12:48:28:
Jeff, I use an S4+ module. While the unit is in Mix Play mode, program change commands affect the entire mix when sent on the mix select channel. Set the desired mix receive channel in Global mode. Program changes sent on this channel will change the mix, but not the program(if there is one), assigned to that channel. All other channels will respond normally to PChng commands.