130 Dual VCA
Scope measurements
- Yellow: source (220hz inv. saw from Roland 512)
- Blue: vca-out low
- Purple: vca-out high
- Input to first vca. Both “sig-in” and “initial gain” controls fully opened (except on first triangle pic)
- Input on one mix channel
- Input on two mix channels
- Input on three mix channels
- Input on three mix channels, triangle
- left picture: “initial gain” positioned just before clipping led (input & output about same RMS)
- right picture: full open. Vertical scale of “high out” = 3V/div
Comparing Behringer 130 & Roland 530
- Yellow: source (Roland 512)
- Blue: Behringer 130 (high)
- Purple: Roland 530 (out)
- Input on two mix channels
Gain partly opened on both vca’s, just before clipping led lights
Gain fully opened (right pic zoomed; blue/purple moved downwards)
