Prophet 10 audio clipping

Prophet 10 audio clipping
« on: July 29, 2022, 12:25:19 AM »
My Prophet 10 exhibits a pronounced clipping (audio outputs main+headphones) after some hours of use. This is temporarily remedied by running the calibration again. Sequential support suggested the following procedure, to avoid over-calibration:

1. Discard calibration (Record+Tune)
2. Power cycle
3. After 2 minutes: Tune first time
4. After 20 minutes: Tune second time
5. After another 20 minutes: Tune third time

The clipping reappears after a few days of operation.

Has anybody in this forum noticed the same or similar problem on their P10?
-------- OS versions ----------
    Main OS:  2.0.1
    Panel OS: 1.1.1
    Main FPGA OS: 1.0.2
    Expansion FPGA OS: 000


Re: Prophet 10 audio clipping
« Reply #1 on: July 29, 2022, 11:34:53 AM »
My Prophet 10 exhibits a pronounced clipping (audio outputs main+headphones) after some hours of use. This is temporarily remedied by running the calibration again. Sequential support suggested the following procedure, to avoid over-calibration:

1. Discard calibration (Record+Tune)
2. Power cycle
3. After 2 minutes: Tune first time
4. After 20 minutes: Tune second time
5. After another 20 minutes: Tune third time

The clipping reappears after a few days of operation.

Has anybody in this forum noticed the same or similar problem on their P10?
-------- OS versions ----------
    Main OS:  2.0.1
    Panel OS: 1.1.1
    Main FPGA OS: 1.0.2
    Expansion FPGA OS: 000

Mine exhibited that behavior as well and it disappeared after powering it off and leaving it for about 2 hours. I opened a ticked with Sequential but couldn't trace the problem because like I said it disappeared. Maybe it's temperature related but I can't say for sure.

Re: Prophet 10 audio clipping
« Reply #2 on: July 29, 2022, 12:05:16 PM »
My Prophet 10 developed a problem but I'm not sure if it's the same problem you had. Sequential support hit the ball out of the park taking care of me and they resolved the problem. Here's a description of the problem I had: On an intermittent basis, the sound from my Prophet 10 became quite distorted, and the volume increased dramatically (vol =3 was as loud as vol = 10 when functioning normally). If this sounds like your problem, who ya gonna call? (Sequential Support)
Prophet 10 Rev4, OB-6 desktop, OB-XA (ordered), Rhodes Mk8 (ordered), Kawai VPC-1, Steinway D