The miracle of Sensurround was uncorked in 1974 as part of the gimmicky release of Earthquake. Universal Pictures wanted to add something extra to the glut of disaster pictures in the marketplace (this was the epoch of The Poseidon Adventure and The Towering Inferno), so Sensurround was born. Theaters added huge speakers, booming bass notes were embedded in the soundtrack, and the ads warned that the effect would be akin to an actual earthquake: “The management assumes no responsibility for the physical or emotional reactions of the individual viewer.” That sold a lot of tickets, and the walls really did shake. But Sensurround was used on only a handful of films before more sophisticated audio systems came into use.
Today, technical advancements make it possible for theaters to rumble and quake with deafening authority—many movie experiences are the equivalent of getting stuck in traffic in front of a car with its thumping subwoofers tuned to the “bleed” setting. Such a film is Deepwater Horizon, a throwback to the ’70s-era disaster flick. The cheesy come-on of Sensurround is nowhere to be seen here; the filmmakers have said the movie is meant as a sober tribute to the 11 workers killed in the oil-rig disaster in 2010. But Deepwater Horizon follows the Earthquake formula, and its sound effects spare nothing in pursuit of tooth-rattling.