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+++ 1951.b.c. first endless cassette - caseta/cassette Tefi Schallband

1951.a. casetaTefi.jpg +++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP+++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP+++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP+++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP+++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP+++ 1951(?).a.c.  caseta/cartridge  Peirce 330Thumbnails1951.c. Loewe Optaphon 51 WAP

- prima caseta cu bandă din plastic (nemagnetică, redată cu ac de pick-up), prima caseta fara sfarsit din lume si primul tip de caseta cea a fost pre-inregistrata, inaugurand astfel o noua industrie - cea a inregistrarilor audio pe banda pentru public; 114 x 97 x 49 mm, 19 cm/sec; variante de 24/48/60 minute, toate fără sfârşit, ce au determinat si 3 marimi diferite ; folosita prima data la casetofonul Tefifon B51, ulterior la casetofonul Tefifon KC-1/Ra - vezi alaturat perioada 1956-60; comparatie cu alte 44 casete audio -in tabelul din sectiunea ''despre casetofon'' .

- world's first cassette with plastic tape (non-magnetic, played with pick-up needle), world's first endless & first pre-recorded cassette, inaugurating a new industry - audio recordings onto tape, very apreciated during next 40-50 years !; variants of 24/48/60 minutes, each being endless, variants that determined 3 different sizes; for Tefifon B51, KC-1, Tefifon BK61UKW, etc (see attached in period 1956-60); dims. and speed - see above or see comparisons with other 44 types of audio cassetes in the table from ''about cassette-recorder'' section.

Author
Tefi GmbH. (W-Germany)
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