Moog Music Forum

I've got a Little Phatty with CV OUT mod. When I control my analog equipment with CV/gate with the Little Phatty's keyboard, I noticed that the pitch CV OUT is not good. For example when I press the C key on the LP, the note produced on the controled synth becomes a G# and not a C.

It's not a problem of 1V/oct scale because the tracking is excellent but there is just a difference of 4 tones and a half relative to the reference note pressed on the keyboard. I don't have this problem when I use my MiniBrute to control the same CV/gate synths, a C is a C (or any other notes of the keyboard) so the problem comes from the Little Phatty, no doubt about it.

What's the problem ? Is there a trimmer or something inside the Phatty where I can adjust the offset ? Can I fix it myself ?

Thanks.

Salut Sencha

I experimented that with CV in general and often solved by pressing a key on the controlled synth, just to set a reference. So the synth you're trying to control has a keyboard, you should try to press a C before sending CV in it.

On a side note, more recently, I've been told that some F-F keybed equiped synths have an F as reference for the pitch. Consequently, controling them through MIDI necesitates to consider a 3 1/2 tone offset.

J'espère que ça t'aidera

Merci stiiiiiiive

Unfortunately it doesn't help !
The only way to resolve temporaly the problem is to use the Offset of my CP-251 but it's not normal that I need an external device. The VC OUT modification was so expensive, I'm a bit upset that it doesn't work properly ! I don't understand, each time I had problems with CV/gate connections it was always with (modern) Moog gear... Sorry that I have to tell this here... !

Unlike MIDI, CV has no fixed pitch reference.

You are not the first to post here with this issue, perhaps others who have experienced it will chime in.

Unlike MIDI, CV has no fixed pitch reference.

Sure but then why my other keyboards equipped with CV/gate outputs, such as the Arturia MiniBrute or vintage synths, are factory set to produce the good pitch reference and not the Little Phatty ? When I use these keyboards to drive a CV/gate synth or a VCO from my modular, the note will be the same than the key pressed and not a difference of several tones.

What is the controled synth, BTW?

Oberheim SEM, Doepfer Dark Energy, Make Noise DPO, MFB Kraftzwerg, etc...

This morning, the CV Gate OUT doesn't work anymore, impossible to trigger the envelopes of my external CV/gate synths.
That's a shame, bad China quality I guess. I'm more and more disappointed by Moog.
I finally add this (expensive) CV OUT MOD for nothing... I am really furious !

Sorry to hear that, mate

I hope it's still under warranty in which case you can get it fixed. Contact Moog support and/or MESI, my best piece of advice.