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Consumer Electronics by S. P. Bali

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STEREO PICKUP HEADS

Pickup heads of stereophonic equipment can be either magnetic or crystal type. The construction of these pickup heads, however, will differ considerably from that of monaural heads. They must be capable of responding to the two-dimensional modulation of the recording groove and of translating the response into two separate signals where as monaural heads have only to follow a lateral displacement and convert it into a single signal. Consequently, there must be two signal generators in each stereophonic head and these must have very similar characteristics. They will, therefore, both be of the same type—both crystal or both magnetic. Also, the pickup stylus will require a vertical compliance comparable with its lateral compliance ...

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