I have an older 100 ft. whirlwind drop snake I picked up used - and don't use very often. It has 12 XLR sends - all good - no issues. It has 3 1/4" TS returns, with two wires to the hot tip connection, foil shielding which is not grounded and a single ground/sleeve. I never really used the returns, but was going to last night, and put the monitor amp at the stage, for two sets of monitors. When I tied it into the monitor outs on my carvin powered monitor (not the speaker outs on back - but monitor outs in front) into the QSC GX5 - it hummed really loud (I guess it didn't know the words?). I imagine it did this because the 100 ft run is not balanced. It wasn't a problem - I was set up close enough to run speaker cables to the first monitors and chain them. Lucky I wasn't trying to setup farther away - I just wanted to get "out of the way" running sound for a friends band. I would like to use the returns If I can without putting too much into it. the 1/4" return setup is ideal for this particular powered head (12 channel - 2 monitor mixes) in the event that I use it this way to get a little more monitor, without having to replace my mixer setup. I am not looking to change my "rack" or PA, just the snake so I can use it with my existing equipment. If I convert the TS to TRS on both ends, will that make a difference? If its too difficult, I will just use the XLRs as I did last night - and keep the mixer within a decent distance <40 ft from the monitor tie-ins. Thoughts, comments, suggestions?