This is basically a combination of 6 VCA configured as a mixer. The five inputs can be used as individual linear VCA or as input channels to the mixer output. All five input channels and the mixer output are voltage controlled. The control voltage inputs for the input channels are normalized so you can modulate all five channels with the same control voltage or group them to your needs. The sliders controls the amount of the modulation per channel. The inputs are normalized as well. This makes for a nice voltage controlled overdrive when used. A level indicator shows the output signal at the summed output. The summed output is voltage controlled as well. Instead of the here used CA3280 (I am using up some NOS) you can use the new available AS3280.
Specs and features
- Five voltage controlled inputs
- Five independent VCA
- Voltage controlled output
- Level indicator
- Power consumption around 75mA each rail
The documentation and the Gerber files for download can be found in my website.
On the schematics you can see 6 VCA with linear control current sources. Just as it is done over and over again. Plenty explanations on the web.