Tuner "noise" from FC-12

[steverosburg]

I love the tuner on heel down feature available with newer firmware versions, the problem I have is that I get a lot of cross talk between my cables when the tuner is active. I can clean up the problem by carefully separating the cables, but it can be tedious and awkward to do so based on where I position the unit on stage and where some of the cables go.

I assume it's a shielding problem since the issue goes away when I physically separate the cables.

What is the best way to resolve? I can build a new cable if there is a recommend bulk wire, connector and/or construction method that will improve or eliminate the problem. For example, should I be using digital microphone cable intended for AES/EBU, RF-protected XLR connectors, etc?

 

[Rex]

I'm guessing it's your guitar cable that's picking up the interference. Make sure the cable is a well'shielded one. If the cables must cross, make sure they cross at a right angle.

 

[steverosburg]

Thanks. I've tried it a number of ways, both crossing my guitar cable, as well as crossing the XLR out to the stage pocket. Even at right angles, it still introduces interference. I made a set of small isolation towers on my 3D printer so I can elevate one cable where they cross, but this is tedious and still not a perfect solution.

 

[Rex]

Is your house feed even involved in this? That's low enough impedance and hot enough signal that I wouldn't expect it to be part of the problem. Try experimenting with different guitar cables. Some are better shielded than others.

 

[steverosburg]

I'll play with it more next time and see, but while I don't think my guitar cable is anything exceptional, it's made with Neutrik connectors and Gepco XB20UB cable, so it's decent. Note that I never noticed this problem with my Axe-Fx II and MFC-101 Mark III, but I didn't have the tuner on heel-down feature available then.