Patent ID: 8351631
Filing Date: 2013-01-08
Classification: H04R

Abstract:
1. A woofer comprising: an enclosure comprising a rear chamber, a speaker unit chamber disposed adjacent to the rear chamber and connected to the rear chamber such that air flows between the rear chamber and the speaker unit chamber across a first barrier rib, a front chamber disposed adjacent to the speaker unit chamber and connected to the speaker unit chamber such that air flows between the front chamber and the speaker unit chamber across a second barrier rib, and a duct having a first side connected to the front chamber such that air flows between the duct and the front chamber, and a second side opened to an outside, wherein the rear chamber, the speaker unit chamber, the front chamber, and the duct are disposed between a first plate and a second plate that are spaced apart from each other; and a speaker unit, which generates a sound vibration disposed in the speaker unit chamber such that a front surface faces the second plate.