An opening in a loudspeaker enclosure designed to improve sound quality.

An enclosure can either be ported or sealed. Ported enclosures have a tube or port that allows air to move in and out of the cabinet. Compared with sealed enclosures, ported enclosures are typically more efficient (that is, they need less power for a given volume) and play bass more loudly but may not play the deepest bass notes as well.

Opening in a loudspeaker cabinet that channels bass from inside the enclosure to outside the enclosure. Also called a "vent."

See vented enclosure.

A tube or vent designed to extend the response of a woofer inside a speaker enclosure.

1. A vent or open tunnel which allows the passage of air in and out of a loudspeaker enclosure. 2. A specified opening or tunnel used to "tune" a vented enclosure.

A hole, or length of tube, put in the wall of a bass-reflex enclosure.

A vent or tube that forms part of a resonant system in a bass reflex loudspeaker enclosure. See Bass Reflex.

An aperture in a loudspeaker enclosure that helps extend the usable low-frequency output. A ported enclosure is also called vented or bass reflex.

A vent or tube, tuned to a specific frequency, to heighten the performance of a subwoofer in an enclosure.

An opening in a speaker enclosure designed to act together with the air in the enclosure so the back of a driver can produce output over a narrow band of low frequencies to reinforce sound radiated directly by the driver.

An important acoustic component of a speaker system, a space inside the speaker enclosure that is connected to the outside air that enhances bass efficiency.

In a vented enclosure, this is the opening that tunes the bass or midbass frequencies. The magnification of the resonance factor of a device.

An aperture in a loudspeaker enclosure used to help tune output. A ported enclosure is also called vented or bass reflex.

A vent or tube tuned to extend the usable response of a woofer in an enclosure.