Using this page you can calculate the component values for an active/passive RIAA equalization stage as show below.
How to use the calculator:
- Select a value for C1 and C2
- Select the gain of the whole stage (including the attenuation of the passive stage) at 1kHz
- Press “Calculate resistors”
- The form calculates the exact values for R1 to R2. Resistors are usually not available with exactly these values. However, with a parallel circuit of two E24 resistors, you can often approximate these values quite good. The calculator finds 2 E24 resistor values that best matches the value.