RECOILLESS SPEAKER SYSTEM

Provided is a recoilless speaker system, which can reduce vibrations to exert adverse influences thereby to generate accurate and strong sounds, which can contribute to a light weight and a small size and can cut the cost for the manufacture, and which can be suspended in midair so that it can generate the sounds even in the gravity-free state if the air is present. The recoilless speaker system comprises a bilaterally symmetric cylindrical resonance wall, and one or two or more pairs vibrating units disposed symmetrically on the two lateral sides of the resonance wall. The recoilless speaker system is constituted such that the paired vibrating units are tuned to each other for vibrations. The resonance wall is so made of a flexible material as to resonate to the vibrations. On the other hand, a sound absorbing member is so cylindrically arranged as to extend along the inner wall of the resonance wall, and a vibration suppressing member is held on the sound absorbing member and/or the vibrating units.