Abstract
A truncated, open top, pyramid housing is provided containing a downwardly propagating woofer mounted near the base of the pyramid; a forwardly and slightly upwardly propagating tweeter mounted on the front side of the pyramid; and a pair of rearwardly propagating, crossed polarity, mid-range speakers mounted on opposed sides of the pyramid housing. The push-pull propagation between the opposed mid-range speakers, within a single housing, and similar cooperation between stereo loudspeaker pairs, provides a generally phase distortion free, wide dispersion sound circulation. A polarity switch is provided for establishing the desired cross-phase relationship. The nonparallel side configuration of the housing reduces internal resonance by preventing standing wave formation. The open top functions as an unidirectional port which also reduces internal resonance. The upward portion of each sound cycle is guided out of the speaker housing towards the ceiling by the funneling action of the slanted, tapered sides. The return wave, however, is not guided back into the port, thus reducing the feedback energy required to support internal resonance. The housing may be packed with acoustical material to increase its effective acoustical volume.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
