Hello, I am using a StudioLive AR16 for live performance. Due to us often performing on large stages I have purchased two 20m long 1/4 inch unbalanced TRS cables to use for the stage monitors. My problem is that I'm often getting quite a lot of hum from the stage monitors. I'm wondering if perhaps the length of the cables is contributing to this, and if the mixer supports the use of balanced cables instead and if so would this likely affect the amount of background hum I am getting?
Thanks.