I checked the ratings on these Behringer before purchasing. They averaged 4.75 out of 5. They didn't come with the XLR to TRS cables so while waiting for them I plugged in some $7 generic microphones. Sound came out of these but it wasn't very loud. I took the cables from them & plugged in the Behringer to my LG-no sound. When I received my new stereo cables, I used them with the Behringer mics but there was still no sound out. The LG audio system recognized a microphone had been plugged in & the music played fine through the system. The LG manual only reads "standard microphone". Is it compatible with Dynamic Cardioid microphones? Am I using the wrong kind of cables? I almost sure the fist I tried were mono. If they won't work with my system, I'd like to return them. I don't have a lot of time left to do so. Thanks, in advance, to someone with the know how.