The specified speed was 78.26 rpm in America and 77.92 rpm throughout the rest of the world, the difference in speeds was a result of the difference in cycle frequencies of the AC power driving the stroboscopes used to calibrate recording lathes and turntables.
The difference in speeds was a due to the difference in the cycle frequencies of the AC electricity that powered the stroboscopes used to calibrate recording lathes and turntables. The specified speed was 78.26 rpm in America and 77.92 rpm throughout the rest of the world.
The specified speed was 78.26 rpm in America and 77.92 rpm throughout the rest of the world. The difference in speeds was a due to the difference in the cycle frequencies of the AC electricity that powered the stroboscopes used to calibrate recording lathes and turntables.
The specified speed was 78.26 rpm in America and 77.92 rpm throughout the rest of the world. The difference in speeds was a due to the difference in the cycle frequencies of the AC electricity that powered the stroboscopes used to calibrate recording lathes and turntables.