The cassette is actually quite a complex piece of machinery. For example take the shell. In order to operate properly, the dimensions of the shell have to be extremely accurate. A good shell is precision moulded from high impact polystyrene. Many people think that all cassettes are alike. It is not so. The quality of the cassette used with the cassette recorder will determine whether or not the customer gets his money's worth out of the system.

A cassette deck supplies only motion and electronics to the tape. Every thing else (Fig. 10.12), the tape, guidance system, tensioning devices, lubrication for the tape, and head-to-tape contact arrangement is built into the cassette itself. The cassette deck, Fig. 10.13, is no better than the ...

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