RRRoger wrote:I already have a 3.5mm TRS Auxiliary Audio Cable from the Behringer XR18 to my ATEM mini Extreme.
How do I get good balanced sound instead of a loud hummm?
Do I have to run two XLR cables or is there a converter I can put at the mixer end?
As I've said before, you need a device (like the
Stagebug SB-6) than can adapt from balanced audio to unbalanced audio. This also isolates the devices and will prevent the humm. You only need one as it's a stereo device. But there are also cheaper alternatives like the
ART DTI that Roman suggested. You will need to put this close to your ATEM, so the length of the unbalanced audio cable between the line isolator and the ATEM should be as short as possible (e.g. 1 meter). The length of the two balanced audio connection between the Behringer outputs and the line isolator can be longer as it's balanced so it's less susceptible to noise and interference.
RRRoger wrote:What if I only run one TRS cable from one Aux port on the XR16?
Would using an XLR cable be better when I have to adapt to the 3.5 mic input on the ATEM?
You should NOT directly connect the ATEM to the Behringer XR18. Under no circumstance. That's the cause of the humm.
RRRoger wrote:Our sound man says both speaker outputs are set up to give the same Mono sound, therefor is it safe to say all AUX out ports do the same?
Regardless of what outputs you use, you MUST use a line isolator. The choice of which outputs to use depends very much on how you create you mix, e.g. if you create a separate mix for the stream and a separate mix for the room. For simplicity I would first concentrate on only one mix for both the room and for the stream.
RRRoger wrote:Which mic input is better to use on the ATEM?
If your ATEM has to multiple inputs it doesn't matter which one you use. However it is important that you set the inputs to LINE level audio. If the audio level from the mixer is too hot/loud you can sometimes activate an attenuation on the line isolator (like on the SB-6) or lower the output on the mixer. There is also the gain on the ATEM but if the level from the mixer it too loud it can cause distortion on the ATEM. So better leave the gain at the ATEM on 0 dB and decrease the output on the AUX outputs of the Behringer mixer.