Our 134-seat theatre has a good Assisted Listening Device (ALD). I needed to install a backstage monitor so I installed a splitter in the cable from ALD mic and ran it to a powered speaker backstage. It works but the volume is very low, even with the mic input and volume turned up all the way. What can I do? New mic to power everything? Or a separate mic just for the monitor (what type?)? Our grid is about 18-feet off the stage floor and the mic hangs center stage. Stage is small - only 30-feet x 15-feet. Not sure what to do.