The Official Sequential/Oberheim Forum
SEQUENTIAL/DSI => Prophet => Prophet Rev2 => Topic started by: davisjj on May 06, 2018, 09:03:11 PM
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Hi all! So, I've had my Rev 2 for a couple of months now (bought it used from a trusted source). I haven't had much time to play with it, but I noticed tonight that I'm getting volume dropout every so many notes. I tried it with an init patch, and if I just run through a scale or even play the same note repeatedly (same velocity), every so many notes, it gets quiet. I'm pretty new to the analog world, so is this normal or do I have something wrong? I just updated the firmware and I'm running the calibration now. If that doesn't fix it, I'm not sure what to try next.
Calibration just finished, same issue. If I turn it off/on, init patch, I noticed that the volume drops after 8 keypresses, for 4 notes (so, keypresses 9, 10, 11, and 12), and then it returns to normal. Would this indicate some problem with those 4 voices?
Any ideas? Thanks.
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two questions:
- is it an 8-voice or a 16-voice version?
- is the volume lower on keypress 9-12, or is there no sound at all?
If "8-voice" and "no sound", check your polychain settings. If 16-voice: sounds like a problem with your unit.
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Try this:
Use the Main/A Output (left & right)
Mono/Stereo: Stereo (Global Menu)
MultiMode: off (Global Menu)
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If none of that works, try re-calibrating a second time. Make sure you unplug all cables except the power. I know it doesn't say that in the manual but I stumbled upon that info when I calibrated mine and it froze during the process. So I unplugged the cables and ran the calibration again and it worked like a charm. Worth a shot...
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If this is happening on the first/last 6 or 7 values of the shape of the pulse (& somewhat less on the triangle), then according to DSI this is natural.