Microcassette
A micro-cassette (also called micro-cassette , MC) is a smaller version of the compact cassette (audio cassette) in terms of its external dimensions and the "little sister" of the mini-cassette (audio cassette). It was developed by Olympus and first introduced in 1969. The housing has the dimensions 50 mm × 33 mm × 8 mm (according to DIN 32750).
A slower tape speed of 2.4 cm / s or 1.2 cm / s compared to 4.75 cm / s with (compact) cassette recorders results in poorer sound properties. Because of their limited frequency range, microcassettes are mainly used for recording speech, for example in answering machines and dictation machines .
The popular size MC60 has a capacity of 30 minutes per side at 2.4 cm / s, there are also the sizes MC15, MC30 and MC90.
When better magnetizable type IV / IEC IV tapes with higher sound quality were being produced in 1979 , Sanyo launched the CR-M500, a recording hi-fi micro-cassette deck for stationary use, under the Fisher brand . Sony and Panasonic followed suit with portable solutions.
Web links
- Tech Flashback: The Microcasette - Part 1: The Tapes. Retrieved August 2, 2016 .
- Techmoan: Obscure 1980s HiFi - The Stereo MicroCassette. The tiny tape that wanted to go big.
Individual evidence
- ↑ Jimm Free in Popular Science , The surprising sounf of microcassette stereo , pp. 58, 59 of September 1981