![]() Two fundamental magnetic properties, relevant for audio recording, are: These require strong external magnetic fields to be magnetized, and retain substantial residual magnetization after the magnetizing field is removed. Magnetic recording relies on the use of hard ferrimagnetic or ferromagnetic materials. These logos, advanced by BASF and the IEC, didn't catch on and were soon abandoned Magnetic properties 'Type 0' was a non-standard designation for early compact cassettes that did not conform to IEC specification in the 21st century it is informally used to denote any low quality or counterfeit cassette. By the end of the decade performance of the best Type I ferricobalt tapes ( superferrics) approached that of Type IV tapes performance of entry-level Type I tapes gradually improved until the very end of compact cassette production.ĭouble-layer Type III (IEC III, ferrichrome or ferrochrome) tape formulations, advanced by Sony and BASF in the 1970s, never gained substantial market presence. Metal particle tapes migrated to Type II and Type I, ferricobalt formulations migrated to Type I. Panasonic developed evaporated metal tapes that could be made to match any of the three IEC types. In the 1980s the lines between three types blurred. By this time, Type I (IEC I, 'ferric' or 'normal' tapes) included pure gamma ferric oxide formulations, Type II (IEC II, or 'chrome' tapes) included ferricobalt and chromium dioxide formulations, and Type IV (IEC IV, or 'metal' tapes) included metal particle tapes-the best-performing, but also the most expensive. Specifications of each type were set in 1979 by the International Electrotechnical Commission (IEC). Top to bottom: Type I (and Type III), Type II, Type IVĪudio compact cassettes use magnetic tape of three major types which differ in fundamental magnetic properties, the level of bias applied during recording, and the optimal time constant of replay equalization. Once you have cut-out the image, stick it onto one of the sides of the tape.Standardized notches for automatic tape selection. When I came to the 2 centre holes and the viewing window, I traced around the 2 holes and used this as a guide and cut out the area needed.ģ. This way, when you go to cut-out the image it will fit perfectly onto the cassette.Ģ. Next create a template from another cassette. I used the following labels: Avery J8171 Cutting the Image to Sizeġ. Next I added these to labels which I printed the images onto. I picked quite a few images so I had a range to choose from.Ģ. #Cassette tape pdfI have included these in the PDF files below. I went to Google images and found some pictures that I thought would look good. Once you have a cassette that you want to use, you need to work out how it’s going to look. I wanted to have some cool designs on the front of the cassette player so I decided to add my own. Most of the tapes that you will find at second hand stores are either classical music or artists that you have never heard of before. This will stabilize them and stop them from wobbling around.~ fit these onto the buttons on the cassette. Cut around the holes that the buttons went through on the MP3 coverģ. As the buttons move around a bit I used the cover of the MP3 as a bit of a braceĢ. ![]() Adding the buttons to the Cassette Tape.ġ. Drill a hole big enough to allow headphones to be pushed in. Next line-up the MP3 player in the cassette tape and buttons and mark-out where the headphone jack will be on the cassette. Make sure that the buttons can move easily in the holes.Ĥ. ![]() Use the MP3 cover as a template and mark-out the buttonsģ. Next make some holes in the cassette tape for the buttons to go through. This is done easily by using a pair of pliers to bend off the small metal plate on top of the switch. You need to remove the button from the switches. I decided to not use these and went for some larger momentary switches.ġ. The buttons that come with the MP3 player are quite delicate and small. ![]()
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