Distortion after ~12 hrs

Distortion after ~12 hrs
« on: May 05, 2022, 01:33:16 PM »
I have had my P10 rev4 since release basically, and as my master keyboard I tend to keep it on almost 24/7 so I can always jam.

The last couple weeks, I've noticed I'm getting distortion and low output level after the synth has been left on for 12 hrs. Power cycling it will alleviate the issue, but it will randomly start again if the synth is left on. I now have to power cycle the synth at least once per day. Also, I seem to have more serious pitch drifts and every time I tune I'm now up to 50 C despite the AC-equipped studio being 73F.

I saw another thread mentioned swapping TS cable for TRS, and I just tried that but the distortion remains. I believe something is causing the filters to bug out based on what I'm hearing. I've been keeping the synth in Stack mode often with my recent work, and I noticed some other odd behavior that may be related to this. It sometimes seems as if the panel and the synth itself can lose sync.

Prophet-10 --> Passive DI --> Console --> Converters. Checked for ground loops and tried lifting

Re: Distortion after ~12 hrs
« Reply #1 on: May 05, 2022, 09:38:31 PM »
I have had my P10 rev4 since release basically, and as my master keyboard I tend to keep it on almost 24/7 so I can always jam.

The last couple weeks, I've noticed I'm getting distortion and low output level after the synth has been left on for 12 hrs. Power cycling it will alleviate the issue, but it will randomly start again if the synth is left on. I now have to power cycle the synth at least once per day. Also, I seem to have more serious pitch drifts and every time I tune I'm now up to 50 C despite the AC-equipped studio being 73F.

I saw another thread mentioned swapping TS cable for TRS, and I just tried that but the distortion remains. I believe something is causing the filters to bug out based on what I'm hearing. I've been keeping the synth in Stack mode often with my recent work, and I noticed some other odd behavior that may be related to this. It sometimes seems as if the panel and the synth itself can lose sync.

Prophet-10 --> Passive DI --> Console --> Converters. Checked for ground loops and tried lifting


Have you tried programming it with the distortion?  Did you get good  sound? Assuming you dont like the sound, Another thougt is to take to sequential and let them work on it. Since it replicates the problem, the fix should be easy.
Jim Thorburn .  Toys-  Dave Smith: Prophet 5, Rev 4; Prophet 08; Pro 2; Prophet 12 module; EastWest Orchestral soft synths; Yamaha S-90; Yamaha Montage 8, Yamaha DX-7; KARP Odyssey; Ensoniq ESQ-1.  All run through a Cubase DAW with a Tascam DM-24 board.

Re: Distortion after ~12 hrs
« Reply #2 on: May 12, 2022, 02:17:47 PM »
I started playing today and had the distortion again. Part of me worries it's related to grounding or something along those lines, so I went ahead and swapped some things around so the entire studio has AC star-grounding via my UPS.

Will find out if this fixes it.