A well known way to reduce noise in VCA is using the VCA's in parallel. Here is my approach. A LM13700 used in parallel reduces the noise floor around 3dB.
Specs and features
- VCA with reduced noise floor
- Runs on +/-15V and +/-12V (with some resistors changed)
- Schematic VCA LN
- Download docs
Nothing special here. Just two plain forward designed VCA with LM13700. With the signals added together.
Standard circuitry for Iabc and level control.