Back when I had my old Numark mixer, I often would run a remote speaker set up by attaching my wireless transmitter to the Aux Out on the mixer. It would send audio and mic signals. Well, I now use a Denon x500 mixer and I could not get my mic signal to transmit. Audio was fine. I used the booth out and the (mono) effects send. I never could get the mic to tranmit. I must have a 1/4" input. Any ideas as to what I was doing wrong?