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Acoustic suspension or air suspension is a variation of the closed-box enclosure, using a box size that exploits the almost linear air spring resulting in a −3 dB low-frequency cut-off point of 30–40 Hz from a box of only one to two cubic feet or so. [16]
In 1974 Clair Brothers introduced their S4 all-in-one PA speaker. A radical departure from the different sized modular boxes generally used in large concert PA systems of the time. The S4 was a single box full range 4-way speaker weighing 425 lbs with integrated rigging hardware for suspending from the roof or superstructure of an auditorium or ...
Mid-size PA system: 4 larger multiwoofer mid/high frequency PA speaker cabs (e.g., each with two 15" woofers) and four subwoofer cabinets, either front-firing, manifold loaded or a folded horn Large clubs with capacity for 500+ people, small music festivals, fairs
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A loudspeaker (commonly referred to as a speaker or, more fully, a speaker system) is a combination of one or more speaker drivers, an enclosure, and electrical connections (possibly including a crossover network). The speaker driver is an electroacoustic transducer [1]: 597 that converts an electrical audio signal into a corresponding sound. [2]
In 1978, Electro-Voice patented its Constant Directivity Horn, which produced an even balance of frequencies across the listening field. It overcame the uneven dispersion of high frequencies that affected the typical high frequency horns used in many professional sound speakers until the late seventies. [1] Also in the 1970s, EV acquired TAPCO.
Just two weeks ago, the Adams County, Pennsylvania, SPCA was near capacity as its kennels were filled with dogs needing homes. Now, for the first time in nearly 50 years, there are no dogs at the ...
In the 1960s, horn loaded theater and PA speakers were commonly columns of multiple drivers mounted in a vertical line within a tall enclosure. The 1970s to early 1980s was a period of innovation in loudspeaker design with many sound reinforcement companies designing their own speakers using commercially available drivers.
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