Summary of Contents for Oakley Classic VCA
- Page 1 Oakley Sound Systems 5U Oakley Modular Series Classic VCA Discrete VCA PCB Issue 1 User Manual V1.1 Tony Allgood Oakley Sound Systems CARLISLE United Kingdom...
- Page 2 The suggested front panel design for the 5U high MOTM format.
- Page 3 Introduction This is the User Manual for the Classic VCA 5U module from Oakley Sound. This document contains an overview of the operation of the unit and the calibration procedure For the Builder's Guide, which contains a basic introduction to the board, a full parts list for...
- Page 4 VCA off. The 5U version of the Classic VCA has two outputs. OUT A is the standard output of the VCA. OUT B, gives you the difference signal between the sum of the two inputs and the final output of the VCA.
- Page 5 The Oakley Classic VCA features two input signals, IN1 (DC) and IN2 (AC), and each has its own level control. In this way, the Classic VCA can be used to mix or sum two signals together before they are processed by the VCA core. One of the inputs, IN1 (DC), is directly coupled to the VCA core.
- Page 6 Ring modulation is achieved by inserting a 'modulation' signal into CV2 with both the CV2 and CV1/GAIN pots set to their maximum and in LIN mode. Auto-panning, whereby an input signal is moved back and forth between the left and right of a stereo signal, can be done by utilising both OUT A and OUT B.
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Page 7: Power Supply Requirements
PCB by a four way 0.156” MTA156 type connector or the special five way Synthesizers.com MTA100 header. Power connections – MOTM and Oakley The PSU power socket is 0.156” Molex/MTA 4-way header. Friction lock types are recommended. This system is compatible with MOTM systems. - Page 8 * The issue 1.1 Discrete VCA boards connect the normally unused pin 6 of the MU connector to socket ground. With the link on PSU not fitted, and using an Oakley MU Dizzy distribution board with a five way power cable, will allow the socket ground to be kept separate from module ground to prevent ground loops.
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Page 9: Final Comments
I hope you enjoy using the Oakley Classic VCA If you have any problems with the module, an excellent source of support is the Oakley Sound Forum at Muffwiggler.com. I am on this group, as well as many other users and builders of Oakley modules.
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