+/-12v vs +/-15v in XM8

CEM3360 may run at +/-12V or +15/-5 to -9V. Because of this, I have to reconsider if I should run the XM8 on +/-12V or +/-15V. I have done a quick review of my modules to see if they are 12v compliant.

Of my modules, these will run fine on 12v

• Bitcrusher
• DCO. NB: Needs 3v3 reference voltage
• Reconstruction filter
• Distortion
• Sample & Hold

These will have to be fixed

• CEM3340
• Moog filter
• Ring mod - looks like it's doing some kind of biasing
• Super saw
• Wave shaper - may just add external reference
• V2164 VCA - R9 must be 6k instead of 7.5k according to http://www.sdiy.org/philgallo/mgbvca.html

These are unknowns

• Jupiter 6 and Juno filters - use +/-15V for trimming and for setting an absolute cutoff for CVs, rest seem ok
• Noise - has 220k res to 15v at input, need to test
• v2164 - MD goes to 15v, may be possible to use 12v.

More on CEM3360 and voltages:

https://synth-diy.org/pipermail/synth-diy/2019-April/171021.html

On 3360: https://kassu2000.blogspot.com/2019/03/dual-vca.html