California Jam 1974 - INTRO

On February 17th, 1974 an ad appeared in southern California newspapers announcing California Jam, a twelve hour rock concert to be held at the Ontario Motor Speedway located fifty mile by freeway from Los Angeles.

Several weeks before the event the anticipated audience was expected to exceed 100,000 people. A stage large enough to support the many tons of equipment and personnel of eight major rock groups had to be built from 500 sections of scaffolding, and covered with 23,000 square feet of plywood.

To support a 54,000 watt sound system capable of covering a square mile, four sound towers were erected to a total height of fifteen stories. To move all the stage equipment around, sections of the stage were built over 600 feet of railroad track.

A million watts of power were generated to light up everything from the stage to the parking lot. Six-thousand feet of temporary fence, a million and a half gallons of water, first aid centers, 1500 employees, artists, stagehands, ticket takers, security people, hot dog sellers all coming together to have everything ready for the morning of April 6th.

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