LOW-FREQUENCY LOUDSPEAKER WITH FLAT DIFFUSER AND USE THEREOF Russian patent published in 2014 - IPC H04R7/02 

FIELD: physics, acoustics.

SUBSTANCE: invention relates to acoustics, and particularly to audio equipment. The acoustic system comprises a diffuser, a diffuser suspension, a magnet system and an oscillatory coil. The diffuser suspension is axially symmetric and rear primary emission passes at least 50% through the inner part of the magnet system. The thickness of the diffuser at the outer diameter is more than 10% the diameter of the diffuser, and the ratio of the diameter of the oscillatory coil to the diameter of the diffuser is at least 0.75:1. The diffuser is made as a diffuser of a low-frequency loudspeaker, wherein said system further includes a loudspeaker for reproducing higher audio frequencies. At least one region of the diffuser is made of elastic foam material and the diffuser itself is three-layered. The core material of the three-layered diffuser has a cellular structure made of aramid fibres, paper, nomex, aluminium, plastic, polyester, polypropylene and/or has outer layers of fibre materials, metal foil and/or plastic film.

EFFECT: improved acoustic characteristics of the loudspeaker.

6 cl, 4 dwg