OTAVCAv2: Dual LM13700 linear VCA (partial build - PCB/panel)

This is a PCB/panel set for the OTAVCA dual linear VCA module.

All surface-mount components have been pre-soldered - it is up to you to provide the necessary through-hole componentry to complete the build. These are updated boards which have been fabricated by a PCB assembly service - the hand-built modules are now sold out.

You can read about the reasoning behind partial builds here🔗

The following parts are required to complete the build:

• 6x PJ301M-12 (aka THONKICONN) or equivalent jacks (IN1, IN2, CV1, CV2, OUT1, OUT2)
  
• 2x LEDs - I recommend Vishay TLHR4400🔗 LEDs, as they have a voltage drop of only 2V. (D4, D6).
  
• 4x 100k linear taper pots - for CV level and gain controls (CV-LVL1, CV-LVL2, GAIN1, GAIN2). You can use audio taper pots for GAIN1 and GAIN2 if it fits your use-case.
• 2x 1k Bourns 3296W or equivalent trimmers - for signal balance control (BAL1, BAL2) - these are fitted to the rear side of the mainboard. For the sake of an easy life, these should be fitted first.
• 2x 10uF electrolytic capacitors (C4 and C5)
• Power cable and mounting hardware (M3x6 machine screws will suffice)

US CUSTOMERS PLEASE NOTE: since no additional assembly is done, the country of origin of these boards is China. Complete modules will have the COO listed as the United Kingdom as I do all the necessary assembly and testing prior to shipping.