A completed eurorack Dual VCO

[waldenpotato]

I just finished this dual vco.

[waldenpotato]

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.

[whyfarer]

nice. I'm thinking about building one of these. nice calibration is a big plus. How do you like using the osc? any chance you have some sound demos?

[waldenpotato]

nice. I'm thinking about building one of these. nice calibration is a big plus. How do you like using the osc? any chance you have some sound demos?

I love this oscillator. Unfortunately I don't have any sound demos, sorry! I don't have the equipment to record at the moment. I really enjoyed building mine and the panel layout is nice to use. I plan on building...... 7 more of these oscillators for an 8-voice polyphonic setup. I currently have 4 of the Weston Precision Audio dual oscillators that I will be selling/swapping out for the Oakley oscillators: https://www.westonaudio.com/2vl1.html. Both are great but I enjoy using the Oakley oscillators more.

Tony is great with questions and has always been supportive. Let me know if you need any other information!

[whyfarer]

Wow! that sounds like some serious love you have for this osc. Thanks for letting me know and good luck with the project!