Deaton,
I have the same problem with X4 and Hughes & Kettner LUCAS amplifier. X4's signal is too weak, so, in large venues, I use a very small mixer in the middle to ajust signal levels. It's a Folio Notepad, Spirit by Soundcraft, with 4 mono channels (2 band equalizer in each channel) and two stereo, with no equalization. There is an optional accessoire to mount the mixer in a mic stand. Very light and small.
José.