Matriarch OSC bleed, Clock Ticking, Speaker Popping on Power = Bad PSU
Posted: Mon Oct 30, 2023 2:48 am
I've seen a few random posts on the web about this, but I thought I'd share here in case people are frustrated with noise bleeding from the Matriarch (and also Grandmother I believe but I don't own a grandma).
I recently added a Roland SP-404MkII to my rig for live shows, and noticed OSC bleed and clock clicking from the Matriarch, even when the channel was muted in the mixer. The unbalanced design of SP404 revealed some grounding issues from the Matriarch that I had not noticed through the balanced connections of my UA Apollo. Powering on and off the synth also made my monitors pop, even though the I had the synth muted in the mixer.
The Fix? Lifting the ground on the Matriarch power supply by adding a three-prong to two-prong adapter fixed everything above. I'll probably reach out to Moog about a replacement power supply for a grounded connection, but I'm happier that the synth isn't humming or clicking anymore!
-Jon
I recently added a Roland SP-404MkII to my rig for live shows, and noticed OSC bleed and clock clicking from the Matriarch, even when the channel was muted in the mixer. The unbalanced design of SP404 revealed some grounding issues from the Matriarch that I had not noticed through the balanced connections of my UA Apollo. Powering on and off the synth also made my monitors pop, even though the I had the synth muted in the mixer.
The Fix? Lifting the ground on the Matriarch power supply by adding a three-prong to two-prong adapter fixed everything above. I'll probably reach out to Moog about a replacement power supply for a grounded connection, but I'm happier that the synth isn't humming or clicking anymore!
-Jon