Sony NT-2 manual Non-Loading method, Memory reverse function

mWhat is the NT (Non-Tracking) format?

Non-Loading method

The conventional helical scan system uses a loading mechanism that needs to draw out the tape from a cassette and wrap it around a rotary drum. This loading mechanism increases the complexity of the mechanism in a recorder. On the other hand, with the Non-Loading method, plastic tape guides are molded in an NT cassette to fit a rotary drum in the cassette. The rotary drum is just pushed against the tape guides and the tape wraps around the drum automatically. This method has made a loading mechanism unnecessary.

tape	tape guide
pinch roller	pinch roller
tape guide
drum	capstan

Memory reverse function

One of the features of this recorder NT-2 is the auto-reverse function. You can record or play both sides of a cassette continuously without turning the cassette over. Moreover, when the continuous recording has been made on both sides (from FWD to REV), you never experience any muting of the playback sound. The buffer memory stores audio data to realize continuous recording/playback on both sides of a cassette tape (memory reverse function).

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