Stereophonic Sound

Ah! The one and only blessed and wonderful sound of stereo on vinyl! In 1958 we were introduced to the stereo effect on records, which consisted of two separate channels recorded in the same groove known as stereophonic. Just as the use of two eyes creates a perception of depth, the effect of musical presence is achieved by stereophonic.

This is facilitated by recording sound with two appropriately positioned microphones and playing it back on two separated loudspeakers. A stereo recording provides two separate signal channels as oscillations perpendicular to either one or the other of the faces of the record groove. The monaural pickup is replaced by one with two coils, which sense the motion of the stylus at right angles to each groove wall; the inside wall is used as the left channel and the outside wall the right.

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