A completed eurorack Dual VCO

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waldenpotato
Common Wiggler
Posts: 184
Joined: Sun May 31, 2020 2:19 am

A completed eurorack Dual VCO

Post by waldenpotato » Sun Feb 21, 2021 8:20 pm

I just finished this dual vco.

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waldenpotato
Common Wiggler
Posts: 184
Joined: Sun May 31, 2020 2:19 am

Re: A completed eurorack Dual VCO

Post by waldenpotato » Mon Feb 22, 2021 9:58 pm

An update:

I just started the calibration process. So far these have been my favorite VCOs to calibrate - I have a couple of other branded VCOs. Having the TUN1 and SCL1 trimmers is really nice. This allows you to calibrate the 1v/oct settings without needing to fiddle with the front panel. I really enjoy not having to fiddle with the front panel while calibrating 1v/oct settings.

Also, from the builder's guide, I found this bit to be really helpful. I have never read or heard this before and sometimes have had a difficult time jumping back and forth between octaves while calibrating:
For any interval, if you find the higher note is flat, then turn the SCL1 trimmer to make it flatter still. This actually reduces the range between the two notes. Conversely, if you find your interval is bigger than it should be, turn the trimmer to make the top note even higher. I always adjust SCL on the high note of any interval, and only adjust the TUN1 trimmer on the lower.
Instead of adjusting the SCL1 trimmer in an attempt to get closer to the correct interval, it's actually easier to do the opposite. I didn't know this! This tidbit along with not having the fiddle with the front panel knobs has made these my favorite oscillators.

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