TheArchitect
Member
- Joined
- Jul 6, 2003
- Messages
- 497
Just wrapping up a new pedal board build and I have an issue. Generally all is well but the board is causing a huge hum in the audio. The pedals are all powered by 2 PP2+ units with 3-4 2-1 adapters to get juice to everything with the exception of my MXR 10 band EQ and my Gold AC powered deja vibe. The 18v wart, the Deja Vibe and the two PP2+ units all plug into a common power strip
The pedal board does not even have to be plugged into the amp. Simply pluging the board onto the AC causes the issue. Unplugging the power to the deja vibe or unplugging the cable from the Deja Vibe output jack kills the hum.
Seems like a ground loop but I don't know how to safely resolve that. The 3-2 ground lift adapters may fix it but I don't want to be the ground path if something fails.... Any idea on how to fix this?
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The pedal board does not even have to be plugged into the amp. Simply pluging the board onto the AC causes the issue. Unplugging the power to the deja vibe or unplugging the cable from the Deja Vibe output jack kills the hum.
Seems like a ground loop but I don't know how to safely resolve that. The 3-2 ground lift adapters may fix it but I don't want to be the ground path if something fails.... Any idea on how to fix this?
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