Theater owners also had the option of purchasing only the Cerwin-Vega drivers and horn cabinet blueprints, buying the wood and making the horn cabinets themselves. MCA made these changes due to the success of the system and because the shipping costs of the heavy Sensurround horns were becoming very expensive. Throughout the history of the Sensurround program, RCA Technical Services performed the theater installations and maintenance. If repairs or replacements were required, the RCA technicians contacted MCA Systems to order needed parts. Because control tones were used to trigger the Sensurround horns, theaters could not generally use the system with their standard films unless a rewiring was done. History Awards In 1974, Waldon O. Watson, Richard J. Stumpf, Robert J. Leonard and the Universal City Studios Sound Department received a special Scientific and Engineering Academy Award for "the development and engineering of the Sensurround System for motion picture presentation". The film Earthquake also won an Academy Award for Best Sound (Ronald Pierce, Melvin M. Metcalfe Sr.). In 1976, MCA was granted for the Sensurround system. Drawbacks Sensurround speakers involved expense for theater owners. Rental for speakers cost $500 a month in 1974 and their installation involved the removal of some seats. The extra expense was commercially justifiable as long as it appeared to provide an advantage in drawing audiences. Sensurround made Earthquake a popular "event" film in 1974 and one of the year's highest-grossing films. Sensurround presented practical challenges, though, in multiplex cinemas where separate theater spaces shared walls. Audiences for The Godfather Part II, which opened the same month (November 1974) as Earthquake, often complained to theater managers about the Sensurround effect when Earthquake was shown in an adjoining theater. The low-frequency vibrations rattled tiles and plaster, too, leading to damage in some venues; a safety net was installed at Mann's Chinese Theatre in Hollywood to catch errant pieces of plaster falling from the ceiling. When Earthquake was screened in Chicago, the head of the Chicago Building and Safety Department demanded that the system be turned down or removed to prevent damage to city theaters. In Germany, Sensurround movies could only be screened in single-screen houses. Subsequent Sensurround films, such as Midway, also tended to play in single-screen cinemas. The success of Star Wars over Rollercoaster in the middle of 1977 demonstrated to theater operators the limits of Sensurround as a guarantor of audience draw. Battlestar Galactica: Saga of