Patent ID: 6516072
Filing Date: 2003-02-04
Classification: H04R

Abstract:
A loudspeaker comprising a module having a direct radiating base electrodynamic driver to transform an electrical signal into acoustic one at least in the middle-frequency part of the acoustic frequency range and an enclosure cabinet of said base electrodynamic driver having a cone overlapping the mounting hole in the outside surface of said cabinet, characterized by that the module is provided with an axial-symmetric acoustic reflector faced the radiating aperture of said base electrodynamic driver and placed outside said enclosure cabinet and coaxially with said base electrodynamic driver, wherein0,5 RE&lE;&Dgr;&lE;0,25 &lgr;max, and SR=(&frac13;Ã·4)SE, where REâ€”radius of the effective area of the radiating surface of the base electrodynamic driver; &Dgr;â€”distance from the radiating aperture of the base electrodynamic driver to the acoustic reflector; &lgr;maxâ€”maximal acoustic wavelength in air, which is reproduced by the base electrodynamic driver; SRâ€”area of the acoustic reflector; SEâ€”effective area of the radiating surface of the base electrodynamic driver.