Loudspeaker enclosure with adjustable baffle board

A loudspeaker enclosure, including means to transmit structure born sound to a support surface, further including means for altering the listening axis from the loudspeaker to the listener for optimum directional sound quality, said loudspeaker enclosure comprising

• bottom wall means comprising means to transfer structure-born vibrational energy from said enclosure to said support surface;
• front wall means which define, together with said bottom wall means and a plurality of walls, an enclosure;
• said front wall means including an adjustable baffle board with at least one opening for mounting a loudspeaker transducer,
• said adjustable baffle board having an infinite plurality of angular positions relative to said bottom wall means or relative to one wall said plurality of walls, and said adjustable baffle board defining in an initial position a vertical plane relative to said bottom wall means and relative to said one wall,
• pivot means supporting said adjustable baffle board for a predetermined range of swivel movement relative to said vertical plane through predetermined angles about a predetermined axis located within or at predetermined distance rearwardly from said vertical plane, and
• means for locking said adjustable baffle board in an infinite plurality of fixed angular positions relative to said vertical plane within said predetermined range of swivel movement, and
• means for housing an electronic circuit for audio amplification, comprising a metall chassis, said metal chassis being mounted into the enclosure, supporting audio amplifier control means, said control means being located within or near said vertical plane,
• whereby the orientation of the baffle board can be adjusted to change the listening axis of the loudspeaker (i.e., a line from the center of the loudspeaker to the center of the listeners head at ear level) without cutting off the transmission of structure-born sound from the cabinet to the support surface.