DYNAMIC LOUDSPEAKER WITH INTERNAL RESONATOR Russian patent published in 2018 - IPC H04R1/28 

FIELD: acoustics.

SUBSTANCE: invention relates to acoustics, particularly to loudspeakers. Dynamic loudspeaker comprises a rigid frame, to which a permanent magnet is attached, a sound-forming diffuser on the upper suspension, a lower centering diaphragm, a sound coil on a frame, as well as a resonator being a volume cavity located coaxially with the frame of the sound coil and connected to the lower part of the diffuser, and from above – covered with a cap having a front coaxial hole. In addition, in the lower part of the diffuser a hole is made inside the cavity or the lower centering diaphragm is made acoustically transparent, and the volume cavity is made in the form of a cylinder or a truncated cone or of the spherical shape, wherein the diameter of the cylindrical resonator is 1.0–2.0 of the diameter of the sound coil frame, the diameter of the lower part of the cone or the spherical shape resonator is 0.3–0.5 of the diameter of the diffuser, and the square of the hole in the lower part of the diffuser is 0.5–1.0 of the square of the front hole.

EFFECT: improved sound quality due to a better and more natural sound with an extension of the stereo effect to the entire listening area.

4 cl, 11 dwg