Sensurround

Sensurround is the trademark name for a process developed in the 1970s by Cerwin-Vega in conjunction with Universal Studios to enhance the audio experience during film screenings. Specifically developed for the 1974 film Earthquake, the process was intended for subsequent use and was adopted for three more films, Midway (1976), Rollercoaster (1977) and in the theatrical version of Saga of a Star World (1978), the Battlestar Galactica pilot. Sensurround worked by adding extended-range bass for sound effects. The low-frequency sounds were more felt than heard, providing a vivid complement to onscreen depictions of earth tremors, bomber formations, and amusement park rides. The overall trend toward "multiplex" cinema structures presented challenges that made Sensurround impractical as a permanent feature of cinema.

Sensurround helped bring wider recognition to established loudspeaker manufacturer Cerwin-Vega, and aided in establishing a strong reputation for new audio amplifier company BGW Systems. The increased awareness of extended low-frequency sound reproduction that Sensurround brought to film audiences was a factor in the increase in subwoofer sales and in the rise in the number of subwoofer designs in the late 1970s and 1980s.

Other articles related to "sensurround":

Subwoofer - History
... in 1974 with the movie Earthquake which was released in Sensurround ... theaters, the Sensurround system used large subwoofers which were driven by racks of 500 watt amplifiers which were triggered by control tones printed on one of the audio tracks on the film ... More Sensurround systems were assembled and installed ...
Earthquake (film) - Production - Sound Effects
... heads), Universal's sound department came up with a process called "Sensurround" - a series of large speakers and a 1,500 watt amplifier made by Cerwin-Vega, that would pump in sub-audible "infra bass ... Chinese Theater in Hollywood, California, where the "Sensurround" cracked the plaster in the ceiling ... The "Sensurround" process proved to be a large audience draw, but not without generating a fair share of controversy ...
Sensurround - History - Cultural References
... They Might Be Giants released a song entitled "Sensurround" that was incorporated in the soundtrack to Mighty Morphin Power Rangers The Movie and (in a different, faster-paced recording) their ... comic has Jason presenting his dinosaur movie in Sensurround ... song 'Holidays in the Sun' makes reference to Sensurround in the opening of the second verse ("In Sensurround sound, in a two inch wall, I was waiting for the communist call") ...
Cerwin-Vega - History
... Cerwin-Vega participated in Sensurround technology which was developed in conjunction with Universal Studios in the 1970s ... Sensurround was a movie theater special effects speaker system which used multiple Cerwin-Vega folded horn subwoofers triggered by an optical soundtrack system to ... Sensurround was premiered in the 1974 movie Earthquake, and was a great success, but most Sensurround units were later dismantled due to structural damage caused by the vibrations ...