How do I fix my subwoofer pulsing?

Subwoofers, those masters of low-frequency sound, can elevate audio experiences to new dimensions, adding depth and resonance to our favorite music, movies, and games. However, within the realm of auditory pleasure, a vexing challenge often arises: subwoofer pulsing. The rhythmic, intermittent fluctuations in bass output can be disruptive, leaving enthusiasts eager to find a solution.