Collect mechanic to make a principle

Disk type recorder, its supply reel and close bring dish of respective independence, belt dish by plastic or a kind material forms duralumin, its all around do not close, friend calls open quotation type again. Its dial has 4 kinds of norms normally, part 4 kinds of corresponding different belt speed, namely 38.1cm/s, 19.05cm/s, 9.53cm/s and 4.76cm/s. The tape width that it uses is 6.25mm. The main characteristic of this kind of recorder is: Dynamic limits effect of wide, bass is good, mark of sound of collection sound reproduction is wide, noise is little, tape runs stability, sound wave motion is small, mechanical and tectonic hard usage. Its defect is: Bulk big, cost is high, together with uses an operation to go to the lavatory not quite, be in consequently at present it basically is used at major of etc of broadcast, TV, theater, important meeting to record sound reproduction circumstance.
Box type recorder is current development is the rapiddest, a kind of recorder with the highest, most popular popularity rate. The cassette that its use international unites a standard (abbreviation cassette) . Its are the biggest the advantage is: Bulk small, weight light, cost is low, carry convenient, especially of tape assemble and unassemble very simple, in when using, needing to insert whole cassette case of case of the belt inside machine only can. Box type recorder uses the width of tape by the place that take a case, can divide to gain ground model, big case type and small box type a few kinds. Gain ground model the tape width that box type recorder uses is 3.81mm, belt speed is 4.76cm/s; The tape width that recorder of big case type uses is 6.25 Mm, belt speed is 9.53cm/s; The tape width that recorder of small box type uses is 3.81mm, belt speed is 2.38cm/s. Function of sound of Electromechanical of big case type is close to disk type machine, multi-purpose at circumstance of important meeting and professional collection, sound reproduction; Gain ground model Electromechanical sound function can satisfy general job, study and domestic recreational need, what hold market share consequently the biggest; The biggest characteristic of engine of small box type is bulk small, weight is light, carry convenient, basically use at language collection sound reproduction to mix a few specific situations and environment.

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