Loudspeaker structure

DETAILED DESCRIPTION I claim: 1.
An electro acoustical transducer structure, comprising; (a) a base enclosure of approximately truncated pyramidal shape, having sides, a top and a bottom, (b) at least one woofer disposed upon the said top and oriented to emit sound upward, (c) a sound-reflecting sphere supported by a superstructure mounted upon said base enclosure above said woofer, and (d) a tweeter mounted upon said superstructure above said sphere, said tweeter being oriented to emit sound downward, the woofer, sphere, and tweeter thus positioned being acoustically related to cause essentially omnidirectional sound to be radiated from said electro-acoustical transducer structure.
2.
The structure of claim 1 in which; (a) said sphere having a diameter disposed rearwardly an amount up to approximately 30% thereof with respect to a substantially axial alignment with said tweeter to alter the acoustic relation between the woofer, tweeter and sphere giving a forward hemispherical radiation of higher frequency sound from the electro-acoustical transducer structure.
3.
The transducer structure of claim 1, which additionally includes; (a) a folded horn within said base enclosure, formed of plural baffles within said base enclosure and having a front exit aperature.
4.
The transducer structure of claim 3, in which; (a) said folded horn is formed of plural baffles, each disposed against alternate opposite sides of said base enclosure and extending approximately 70% from the alternate sides of said enclosure, and (b) each of said baffles including a centrally located stiffener that extends fully between the alernate sides of said base enclosure.
5.
The transducer structure of claim 4, which additionally includes; (a) curved elements fitted into each corner formed by a said baffle and a side of said base enclosure against which said baffle is disposed, to form a curved interior path for said folded horn at each said corner.
6.
The transducer structure of claim 1, which additionally includes; (a) means to incrementally elevate the bottom of said base enclosure above a floor, and (b) at least one ducted acoustic port disposed in the bottom of said base enclosure