• Security notice: Ernie Ball staff will never send you a direct message about a prize or giveaway, and will never ask you to click a link to "claim" anything.
    If you receive a message like that - even from an account whose name looks official - do not click the link. Please report it using the Report link on the message so the moderators can act. A scam campaign impersonating admin accounts was blocked on 29 July 2026; those accounts are banned and their messages have been deleted.

Hum with EB 6165 Stereo Pan Pedal

Eric59

New member
Joined
Jan 21, 2022
Messages
2
Location
USA
Generally very happy with the 6165 Stereo Pan Pedal: Guitar > Input A on 6165. 6165 Outputs to 2 amps in pan mode. Both amps are grounded. One amp will hum loudly no matter what position the pedal is in. Thoughts? Possible solutions? Thanks!
 
Ground conflicts can happen even if two amps are plugged into the same ground. Ideally they should be plugged into the same outlet via a power strip/extension board, but even then the circuits may not play nicely together. So, the trick is to lift the ground on one amp and allow the other to do the job of being the noise and safety ground for both amps (which is made via the instrument jacks). Just make sure that if only one amp is in use that its individual connection to ground is reestablished. See this great video from Taylor guitars about this...

 
Ground lift (i.e., "cheater plug" for one of the amps) works perfectly. Thanks!
 
Ground lift (i.e., "cheater plug" for one of the amps) works perfectly. Thanks!
Cool! Just remember to not use the ground lift if you are only using one amp. There has to be a ground present for safety. When you use a ground lift with two amps, one amp is doing the job for both amps.
 
Back
Top