KEEP CDX (1990 JP) KEEP CDX Cassette Description The KEEP CDX (1990 JP) cassette tape is a high-quality, analog magnetic tape designed for audio recording and playback. It is part of the compact cassette format, which has been a standard in the music industry for decades. The cassette tape is made of polyester-type plastic film with a magnetic coating, ensuring reliable and clear audio reproduction. KEEP CDX Technical Specifications Media Type: Magnetic tape cassette Encoding: Analog signal, in four tracks Capacity: Commonly available in 30, 45, and 60 minutes per side (C60, C90, and C120) Track Width: 0.6 mm per channel with a 0.3 mm separation to avoid crosstalk Tape Speed: 1.875 inches per second (4.76 cm/s) Tape Material: Polyester-type plastic film with a magnetic coating, typically using ferric oxide or cobalt formulations. KEEP CDX Key Features Reversible Design: The cassette tape is reversible, allowing users to record and play back content on both sides. Write-Protect Notches: The cassette shell includes write-protect notches to prevent accidental recording on the prerecorded side. Auto-Reverse Mechanism: Some cassette decks support auto-reverse, allowing seamless playback without manual flipping. Improvements Over Previous Generation The KEEP CDX cassette tape follows the advancements in magnetic tape technology, such as the introduction of chromium dioxide (CrO2) media in the 1970s, which improved sound quality and durability. The use of cobalt-doped iron oxide formulations also enhanced the overall tape output levels.
