Guitar Amplifier Electronics: Basic Theory

Guitar Amplifier Electronics: Basic Theory

Richard Kuehnel

Our new book uses these calculators to design preamp stages, cathode followers, tone stacks, power amps, phase inverters, negative feedback, and power supplies.

calculatorLaunch me!

guitar amp bright boost capacitor circuit

What does this calculator do?

The key components of this bright-boost circuit are the volume control RV and the bypass capacitor CBP. Bass frequencies are attenuated by the volume control's voltage divider effect, but treble bleeds past via the capacitor. The capacitor has no effect with the volume control set to maximum. It has the most effect at low control settings, when brightening is the most desired.

The calculator plots gain versus frequency based on the capacitor value and the volume control setting. It does not account for coupling capacitor bass attenuation.