The Problems with the Intermodulation Distortions
After publishing the first paper about harmonic distortions and how to read the technical graphs, I was asked to explain the Intermodulation Distortions as well. Here a typical measurement of the IM Distortion of a power amp driving 100W into 4 Ohms. The input signal is a so-called dual tone with f1=19kHz and f2=20kHz. Pictures…