So I can't see how to use the RCA inputs on the Model 16, Channel 13/14. I assume folks with the Model 24 would have the same problem with RCA inputs on Channel 21/22. With the mode switch set to LIVE, I can get the Bluetooth input to work, but even when I un-pair my bluetooth device from the mixer, I still can't get the RCA inputs to work. Anyone got any ideas of how to activate them? NEVERMIND. had the wrong wires connected..