13700 Based Dual VCA - Modular in a Week 2.3

Day 2: VCAs Part 3: 13700 Dual VCA Difficulty: Moderate Price: ~7$ MiaW playlist: https://www.youtube.com/playlist?list=PLyE56WXw0_5Q5QGMEXWmskuhojKyRdA3T The last VCA for today. This is a more true VCA than the other two. But it is still a very rudimentary VCA without that many features. It has a BIAS knob, that is necessary for it to work with all our different CV ranges. You can also choose if you want to have a CV amount knob or not. It works both with and without. And might be good to have in later when wanting to do some more advanced patching :) Its a choice. A little more advanced build than the the other two really simple "VCA"'s... Links to schematics, parts and other relevant stuff: Link to the Schematics: https://www.dropbox.com/s/85l1fvs0xroi79h/Schematic_13700-Dual-VCA.pdf?dl=0 Link to the frontpanel design svg file: With CV amount: https://www.dropbox.com/s/mizcv0ks0g7d3et/2.3%2013700%20VCA_with_CVamount_8HP.svg?dl=0 Without CV amount: https://www.dropbox.com/s/zgg8bo5v567360m/2.3%2013700%20VCA_8HP.svg?dl=0 Link to the Nuts and Volts article: http://www.nutsvolts.com/uploads/magazine_downloads/11/April%202003%20Ray%20Marston%20-%20Understanding%20and%20Using%20OTA%20Op-Amps.pdf Link to the component spreadsheet: https://www.dropbox.com/s/fn9gbn0vo0fteab/MIAW%20Component%20list.xlsx?dl=0 Link to ALL the files for all the episodes as they become available: https://www.dropbox.com/sh/ynbxdv9nn6z0k47/AABt6dAvez4M-Mz-R9saO9Tka?dl=0 Ebay link to buy LM13700 much cheaper than what I managed locally: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575103922&campid=5338181421&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3Dlm13700%26_sacat%3D0 PATREON LINK If you wish to support my work more than just a thumbs up :) https://www.patreon.com/SourceryOne