Guitar Amplifier Electronics: Basic Theory book

Basic Theory - using 21st-Century technology to design vacuum tube preamps, power amps, and power supplies

Fundamentals of Guitar Amplifier System Design book

System Design - a professional methodology for crafting a complete guitar amplifier

Guitar Amplifier Electronics: Circuit Simulation book

Circuit Simulation - modeling vacuum tube guitar amplifiers using SPICE

calculatorLaunch me!

What does this calculator do?

voltage divider

There is a familiar formula for the voltage gain of a voltage divider formed by two resistors: A = R2 / (R1 + R2). Not so familiar are the formulas for determining the value of R1 or R2 when a specific amount of attenuation is desired. Here is a calculator that determines the unknown resistor value.