LOUDSPEAKER Russian patent published in 2000 - IPC

FIELD: hi-fi acoustic equipment. SUBSTANCE: device has assembly, which has main direct emission electrodynamic head, which converts electric signal into acoustic waves, at least within mid-range of acoustic frequency band. In addition diffuser, which is designed as housing of acoustic envelope of said electrodynamic head, covers slot in central panel of said housing. In addition device has axisymmetric sound reflector, which is directed towards emission slot and is mounted outside of acoustic envelope housing coaxially to main electrodynamic head. In addition, 0,5R_E ≤ Δ < 0,25λ_max, S_R= (1/3-4)S_E,, where R_E is radius of effective area of emission surface of main electrodynamic head; Δ is distance from emission head of main electrodynamic head to sound reflector; λ_max is maximal wavelength of sound, which can be played by main electrodynamic head; S_R - is area of sound reflector; S_E is effective area of emission surface of main electrodynamic head. In addition, assembly may have high-frequency electrodynamic head and bass direct-emission electrodynamic head with respective bass sound reflector. EFFECT: improved quality of output sound. 23 cl, 13 dwg