A subwoofer, often known as a sub, is a loudspeaker designed to reproduce low-pitched audio frequencies, typically below 200 Hz for consumer subwoofers, although professional subwoofers may reproduce frequencies as low as 5 Hz. Subwoofers are used to augment the low-frequency response of larger speaker systems. They are typically used in home audio systems, car audio systems, and professional sound reinforcement systems.
Sealed subwoofers are a type of subwoofer that uses an airtight enclosure to isolate the subwoofer driver from the outside environment. This results in a tighter, more controlled bass response. Sealed subwoofers are typically smaller and more compact than other types of subwoofers, making them ideal for use in smaller spaces.
