...
pmod (pitch modulation - its a attunator for Freq.CV input, without cable connected it works as a offset)
You also have the link switch, this simply copies the V/oct input from osc1 to osc2. (It does internally, digitally) so if you apply the same signal to both oscillators, and also have the link switch on, you will get a 1:2 pitch
Mod. and Offset are related as they both control the modulation amount for each oscillator.
Mod is the Modulation CV attenuator, it needs CV input to do anything.
Offset is the manual offset for this, so you can tweak that manually without any CV input. These two are added internally to allow you to get a lot of modulation range.
Build Manual:
PDF name DDO_Build_Manual_v091.pdf
...
The *100n caps are the output filtering caps. I found that 100n is a bit too mellow for my taste and went with 10n instead. That is what you hear in the latest demos. In the BOM they are marked as 10n*.
copy from muffs:
Here's a mod idea: use a switching jack for the Wave CV in and connect the switch to 5v. That way the Wave pot will sweep through the table manually when no cable is inserted into the jack.
If you do this, please use a current limiting resistor to protect anything you plug in here. 100 -200 Ohm should be enough.
...