Patent ID: 7252176
Filing Date: 2007-08-07
Classification: H04R

Abstract:
1. In a horn type loudspeaker for operation in a low frequency range, a cabinet comprised of two back panels abutted together at the proximate sides with each panel arranged in an opposite forwardly increasing angle from the abutment at the rearward plane, an inner panel spaced forwardly of said two rear panels and having a vertically oriented throat opening therein, two inner side panels engaged with the outside edges of said inner panel, converging forwardly of said inner panel to engage at each side of a frontally arranged panel, wherein said converging angles partially define flaring horn sections on either side of the central vertically-oriented air chamber formed therewith, a phase inverting means of said air chamber arranged in said front panel, two outer side panels engaged with the outside edges of said rear panels, spaced from said inner side panels in oppositely disposed spaced planes to form the flaring portions of the terminal horn sections therewith, baffles cooperating with said throat opening and said rear panels to create an equal division of the air column rearward of said throat opening, forming two horizontal horn sections flaring in opposite directions from said throat opening to said terminal horn sections, means for completing said horn sections, and an apertured panel for enabling the sealed engagement of at least one driving unit, mounted forwardly of said throat opening and cooperating therewith, to transmit sound though said throat opening and said horn sections therebeyond.