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Consumer Electronics by S. P. Bali

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STEREO RECORDING SYSTEMS

Stereo records can be produced in two ways. In one method, one track is cut in the record groove by the side-to-side (lateral) movement of the record cutter, as in cutting a mono-record. The second track is cut simultaneously in the same groove but with an up-and-down (hill-and-dale) movement. This is shown in Fig 8.6 and 8.7. The cartridge in the record player must then be able to follow both the lateral and hill-and-dale movements.

In the second method, the groove is a V-shaped with a 90° angle between sides, as shown in Fig. 8.8. Both tracks are cut by a quasilateral method, one track on each side of the V. The two tracks are, therefore, 90° apart and require a cartridge that can follow both tracks at once.

The second ...

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