| br>The ADSR Upgrade boards for making the ADSR/VCA module into a fully voltage controlled VC-ADSR module are available again.
This new issue 2 Upgrade design is almost identical to the last issue. The boards are fractionally less deep, and have a lower output resistance making them suitable for all issues of the Oakley VC-ADSR board.
Note: The current issue 5 VC-ADSR board can be used with the older issue 1 Upgrade boards but will have reduced maximum attack, decay and release times if built as stock. This can be corrected with two resistor changes on the issue 5 VC-ADSR board. Changing R50 and R51 to 62K should allow the full range to be obtained when used with a issue 1 Upgrade board.
If you find the maximum times are then too long for your taste then you can change three resistors on the issue 1 Upgrade board too. R23, R30 & R44 can be changed to 5K6.
Tony br> br>