SMALL-SIZE LOUDSPEAKER Russian patent published in 1998 - IPC

FIELD: hi-fi acoustic equipment. SUBSTANCE: device has housing in which active emitter and passive emitter are located. Active emitter is designed as run-out low-frequency head. Passive emitter is designed as diaphragm which is connected to housing by means of cup. Housing has chamber which is transformed into flow-generating flat channel which output hole is adjacent to inner edge of run-out. Angle between their axes is in range of 60-120 degrees. Passive emitter is located inside transition chamber. Effective area of its diaphragm is in range of 0.5-1.5 with respect to effective area of run-out of low- frequency head. EFFECT: increased functional capabilities. 2 cl, 1 dwg