[SPH] OSC 2 Not in tune

The Moog Forum Moog Beta Forum
1

I am running firmware 2.1.12

But, the second oscillator pitch is out of range.

After doing a Note Calibration as stated in the last row of this file: https://www.moogmusic.com/sites/default/files/SUB_PHATTY_HIDDEN_FUNCTIONS_2.0.pdf
which is not part of the editor (like it is on Minitaur’s), oscillator 2 frequency range is way off

When its Frequency value is set to 0 it works, but when set to -7 or +7 it is out of tune. This can be easily checked with a standard tuner:

Try this:

Set the synth to initial values
Set the fine tune knob until the synth is in tune.
Set both oscillators to unison (OSC 2 freq around 12 o’clock)
Turn OSC 1 Vol to zero, Osc 2 vol to 12 o’clock.
Turn Osc 2 frequency to -7. Check the tuner
Set it to +7. Check your tuner

The second oscillator does not get to the expected note.

This does not require a preset.

Of course it can be my unit.

If it is, then I need to be able to calibrate the second oscillator. I don’t know of a sysex command or any other way to do it. Maybe there is a proper way to calibrate the unit. Hopefully this function could be added to the editor?

2

I have checked this and I get F for -7 and G for +7, as expected. What notes do you get ?

If they are way off, please check the following:

  • Reinstall firmware
  • Reset all settings to default
  • Set modulation wheel to minimum position
  • Calibrate

and then try again.

3

I did everything you told me but its still off. I should mention that all of the tests/firmware update has been done after the unit has been on for at least 15 minutes.

When OSC 2 is set to -7 the note is way more than a semitone higher from where it should. When set to +7 its more than a semitone lower from where it should be.

What else can be done? I did the note calibration, but I still wonder if there is a way to calibrate the 2nd OSC with respect to the first, like the Slim Phatty does…

I am running firmware 2.1.12 Is there a chance that this is the culprit?

4

Can you write Amos directly with your problem ? (Amos@moogmusic , cc: gil@moogmusic)

Since it works perfectly here, I’d be interested to know if it’s related to your specific machine, or something that can result from an error in firmware.

5

I just did Gil,
If there is something wrong with my unit I will service it myself, since Iead the official Moog Music’s service center for my country, Colombia