A subwoofer speaker uses large drivers called woofers to produce deeper sounds. These woofers are typically enclosed in a wood or plastic structure and look like any other speaker. The subwoofer then uses the large woofer and a built-in amplifier that powers the signal to produce deeper, cleaner bass
This standard woofer produces frequencies from 20 Hz up to 2,000 Hz (2 kilohertz, or 2 kHz). It is often characterized by its bassy sound, which comes from the lower-frequency sine wave.
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