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Sensurround involved the installation of large, low frequency, horn-loaded speakers which contained specially designed 18-inch Cerwin-Vega Model 189 ES drivers in custom black wood cabinets. Three horn configurations were available, Model-C (Corner), Model-W (Folded Bass Bin) and Model-M (Modular).
Early speaker from Vega Labs. Cerwin-Vega was founded as Vega Associates [4] (with later name changes to Vega Laboratories and then Cerwin-Vega) by aerospace engineer Eugene J. "Gene" Czerwinski (1927–2010) in 1954, [4] and became noted for producing an 18" speaker capable of producing 130 dB in SPL at 30 Hz, an astonishing level during its time.
The Cerwin-Vega JE-36C has a five feet long folded horn chamber length in the wooden cabinet. [93] Manifold subwoofers have two or more subwoofer speakers that feed the throat of a single horn. This increases SPL for the subwoofer, at the cost of increased distortion.
Megasound made its addition to this system by way of subharmonic synthesis using a customized and pre-configured rack-mount processor. [8] Also additional BGW or Cerwin-Vega power-amps and Universal-style Cerwin-Vega E horns or the later Cerwin-Vega L36 JE folded horns as the speaker-array were used.
Horn-loaded compression drivers can achieve very high efficiencies, around 10 times the efficiency of direct-radiating cone loudspeakers. They are used as midrange and tweeter drivers in high power sound reinforcement loudspeakers , and in reflex or folded-horn loudspeakers in megaphones and public address systems .
The sound engineers for Stone Love Movement (a sound system crew), for example, modified folded horn subwoofers they imported from the US to get more of a bass reflex sound that suited local tone preferences for dancehall audiences, as the unmodified folded horn was found to be "too aggressive" sounding and "not deep enough for Jamaican listeners".
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