WOOFER

摘要

Passive radiators having the same effective vibrating areas and the same effective vibrating masses are fitted to a band-pass type cabinet so that the radiators may oppose to each other and driver units may also oppose to each other. The vibration reaction forces exerted on the cabinet from the passive radiators offset each other and those exerted on the cabinet from the driver units also offset each other. Therefore, the vibration of the cabinet is greatly reduced. The diameters of the two passive radiators can be arbitrarily increased and the vibration areas of the passive radiators are very large. Thus dynamic bass sound is reproduced.