Woofer speaker and acoustically coupled sub-woofer speaker system

摘要

Provided is a woofer speaker and acoustically coupled sub- woofer speaker system. Such system is comprised of a tubular enclosure and has a lower elbow. The lower elbow has an open lower end facing sideward, an open upper end facing upward and a bend therebetween. Further included in the system is an upper elbow with an open lower end facing downward, an open upper end facing sideward and a bend therebetween. An extension tube is coupled between the upper end of the lower elbow and the lower end of the upper elbow to define a transmission channel. A woofer speaker is coupled to the lower end of the lower elbow and is adapted to be electrically energized for projecting sound therefrom. Finally, a holding mechanism is provided for allowing the tubular enclosure to be supported in a fixed orientation. The system is constructed so that when the woofer speaker is electrically energized, back propagated audible sounds are acoustically coupled through the transmission channel and projected from the upper end of the upper elbow in phase with those of the woofer speaker. This creates a sub-woofer speaker.