I have a pedal board that has up to recently been no issue, but with the advent of my church's new Presonus board, have some new audio artifacts.
Diving in, I use a MOD Dwarf to run 2 inputs (Neck Puckup / Bridge Pickup split) and 2 outputs (Clean / Effects). The neck pickup has minimal processing and runs to to a clean channel and out to a mix blend pedal. The bridge pickup runs direct to my effects chain, which consists of synth / POG / Comp / and finally Chorus, then returns to the mix blend, which outputs to the DI.
Everything is connected to an isolated TruTone CS12 isolated power supply. The Dwarf uses 12VDC, everything else runs on 9v. All pedals have their own isolated power feed.
Before the new board, I had no issues, but now when my effects loop is plugged in (specifically the first 2 pedals in the loop) there's an audible buzz and worse, a tone suck that causes distortion when I run the bridge pickup.
To work around it at church, I disconnected the 1st two pedals and the Boss VE500 Vocal box, which was in line with the clean output to the X-Blender, trying to find the offending box. That seemed to do the trick immediately, but obviously a fix is needed.
I returned home with my gear, then rebuilt the entire board, ensuring all my power is correctly fed. I discovered the ground lift was enabled on both the vox box as well as the DI. I was a little hesitant to think that this could be the issue, since I run a Furman power conditioner before my isolated power. After everything was put back together, I made a couple tweaks to my amp setup in the Dwarf (If you haven't seen this device, it's basically a Linux box that runs sequencers, pedals, amps, etc.. in a virtual workspace) and did some load testing against my digital inputs, amps, and headphones. I haven't found any of the distortion (yet) - but I also haven't been back to church to test against that new board.
Have any of you run into anything like this, where a sound board change affects your equipment in this way?
Diving in, I use a MOD Dwarf to run 2 inputs (Neck Puckup / Bridge Pickup split) and 2 outputs (Clean / Effects). The neck pickup has minimal processing and runs to to a clean channel and out to a mix blend pedal. The bridge pickup runs direct to my effects chain, which consists of synth / POG / Comp / and finally Chorus, then returns to the mix blend, which outputs to the DI.
Everything is connected to an isolated TruTone CS12 isolated power supply. The Dwarf uses 12VDC, everything else runs on 9v. All pedals have their own isolated power feed.
Before the new board, I had no issues, but now when my effects loop is plugged in (specifically the first 2 pedals in the loop) there's an audible buzz and worse, a tone suck that causes distortion when I run the bridge pickup.
To work around it at church, I disconnected the 1st two pedals and the Boss VE500 Vocal box, which was in line with the clean output to the X-Blender, trying to find the offending box. That seemed to do the trick immediately, but obviously a fix is needed.
I returned home with my gear, then rebuilt the entire board, ensuring all my power is correctly fed. I discovered the ground lift was enabled on both the vox box as well as the DI. I was a little hesitant to think that this could be the issue, since I run a Furman power conditioner before my isolated power. After everything was put back together, I made a couple tweaks to my amp setup in the Dwarf (If you haven't seen this device, it's basically a Linux box that runs sequencers, pedals, amps, etc.. in a virtual workspace) and did some load testing against my digital inputs, amps, and headphones. I haven't found any of the distortion (yet) - but I also haven't been back to church to test against that new board.
Have any of you run into anything like this, where a sound board change affects your equipment in this way?
