A subwoofer is a specialized speaker designed to reproduce low-frequency sounds, typically from 20 Hz to 200 Hz. It enhances the depth and impact of music, movies, and other audio content by delivering powerful bass that standard speakers can't produce. Subwoofers come in various sizes and types, including powered (with built-in amplifiers) and passive (requiring external amplification). They are essential in home theater systems, car audio setups, and professional sound environments, providing the rumbling lows that create an immersive listening experience and adding realism to sound effects and musical performances.