The list below provides solutions to some of the most common tech support issues.
If you are having problems with your Prophet ’08, resetting the Global parameters is a good place to start.
To reset the Global parameters:
If one of the analog waveshapes sounds strange or if a filter is not behaving as expected, you may also want to try running the calibration routine. This is not something you should have to do regularly (or ever, really) and has no effect on the oscillator tuning.
To run the calibration routine:
You may need to calibrate the wheels.
To calibrate the wheels:
Update your OS and use the BalanceTweak parameter in the Global menu to adjust the left/right balance.
Are you using both the Left and Right outputs? The Prophet ’08 does not have a mono output, though you can turn all the panning controls off in a program and effectively turn both outputs into mono outs. (Note that there is a production error in the very earliest Prophet ’08 Keyboards where the Main Left output is labelled “Left/Mono.” This is incorrect and has been changed in subsequent production runs.) A soon-to-be-released version of the OS (versions above Main 1.3 Keyboard/Main 1.4 Module) includes the ability to globally switch between stereo and mono.
Are your audio cables plugged into the Main outputs? If you plug into the B outputs, voices 5 through 8 are removed from the Main outputs and only voices 5 through 8 play through the B outputs.
Make sure the MIDI Clock setting in the Global menu is set to Internal. If it is set to MIDI In or MIDI In/Out, the sequencer and arpeggiator will only play if a MIDI clock is present at the MIDI input.
See previous.
Make sure poly chain is turned off in the Global menu.
There are many sources of gain in the Prophet. If they are set to high levels, you might hear some distortion under the right circumstances. We try our best to make sure that doesn’t happen on the factory programs, but we’re never going to be able to predict just how someone else will decide to use them (which is part of the fun of making synthesizers). Start by reducing the Amp Envelope Amount.