Patent ID: 8157049

Claim:
A trirectangular tetrahedral subwoofer enclosure, comprising: a first face, a second face, a third face, and a fourth face, wherein the first face, the second face, the third face, and the fourth face are substantially triangular; a first corner, wherein the first corner is at an intersection of the first face, the second face, and the third face; a second corner, wherein the second corner is at an intersection of the first face, the second face, and the fourth face; a third corner, wherein the third corner is at an intersection of the first face, the third face, and the fourth face; a fourth corner, wherein the fourth corner is at an intersection of the second face, the third face, and the fourth face; wherein an angle between the first corner and a midpoint between the third corner and the fourth corner, having the second corner as its vertex, is substantially ninety degrees; and wherein an angle between the third corner and the fourth corner, having the second corner as its vertex, is substantially ninety degrees; at least one active driver, wherein one of the at least one active driver is a subwoofer driver attached to the third face, and wherein every one of the at least one active driver has a free air resonant frequency less than one hundred Hertz; an audio amplifier, wherein the audio amplifier is integral to the subwoofer enclosure, and wherein the audio amplifier is configured to provide a signal to an input of the subwoofer driver; and a wireless receiver configured to receive a radio-frequency signal and convert the radio-frequency signal to an electrical signal encoding audio, wherein the wireless receiver is connected to an input of the audio amplifier.