Hey, Currently installed in our theater are 4 ULX wireless receivers and one Shure UA844 wireless combiner. We are looking to expand what were in the original specs for the building by going to 12 wireless channels. We would like to stick with the ULX because that is what is already installed. Ideally we would order 8 more ULX systems and 3 more UA844's, we can't currently afford all of this however. But we do have some Sennheiser EW112G2 receivers sitting around from our old building. So can we order the 3 UA844's and as many of the ULX receivers as we can afford, and supplement what we don't buy with the Sennheisers? Will the Sennheiser receivers function along side the ULX receivers with the UA844 combiners?