HX FX ground loop hum using channel switching

[rwinking]

I plugged into XP1 to do some channel switching and after set up, it works great. The only problem is a ground loop kind of hum. I tried using a TRS and a TS cable and it did not matter. I read about problems with a Mesa Rectifier but this seems different as this is not a Mesa. It is an Egnater. I use my Helix rack with the amp and have used the channel switching on it with no problem. For some reason it is not liking the HX  Effects. Am I missing some internal switch somewhere?

thanks in advance

rick

 

[rwinking]

Doesn't look like anyone else had this issue but in case you d, I found a solution. I think that for what ever reason, my Helix has an issue with my amp, which is a randall/Egnater RM50. I run 4CM and it hummed there so I put a CoolSwitchPro between the HX and the amp and the hum stopped. The same thing happened when I tried to use the HX FX to  switch amp channels and the same solution occurred with the Coo;Switch Pro. Not sure why, but it lifted the ground. I had tried lifting the ground every other way possible and nothing worked. I ordered an Ebtech Hum Eliminator and hopefully will get the same results. I think it is just something with this amp as I have two of them and the same thing happens in each.

Please let me know if anyone has had this ground loop experience.

[datamouth]

On 2/8/2021 at 11:49 PM, rwinking said:

I plugged into XP1 to do some channel switching and after set up, it works great. The only problem is a ground loop kind of hum. I tried using a TRS and a TS cable and it did not matter. I read about problems with a Mesa Rectifier but this seems different as this is not a Mesa. It is an Egnater. I use my Helix rack with the amp and have used the channel switching on it with no problem. For some reason it is not liking the HX  Effects. Am I missing some internal switch somewhere?

thanks in advance

rick

 

I'm getting the same issue on my Orange Rockerverb. When i switch to the clean channel i get a low hum. i've tried everything, it's really annoying. Have you found a solution?

[rwinking]

Yeah. The solution is in an earlier post. It is kind of bulky but it works. As stated above, I used a Cool Switch Pro while doing 4CM putting the unit between theamp and the Helix. It only doews the ground loop on certain Randall/Egnater amps and not on others. I also did get the Ebtech Hum Eliminator and it works the same way. I have an Egnater M50 which is MIDI and I can switch amps that way. For some reason it only does the hum with the RM50 amps. I have had the amps looked at and nothing is wrong. Apparently it is just a quirk with some amps.