JVC XM-448BK Instructions Manual

Also see for XM-448BK: Instructions

34About MD (Mini Disc)Playback-only MDRecordable MDCartridgeDiscCartridgeShutterThe MD (Mini Disc) is a new digital audio medium using a disc with a diameter of 64millimeters. In spite of the small size, the MD has multiple functions, high audio qualityand recording/playback capabilities for up to 74 minutes.Role of the cartridgeThe MD cartridge has a pocket size of 68 mm × 72 mm with a thickness of 5mm. The cartridge accommodates the 64 mm diameter disc for ease oftransportation and storage.The internal disc is usually protected by the cartridge shells and shutter so nodust, dirt, scratch or fingerprint is left on the disc and the disc handling is easy.Two disc typesThe MD (Mini Disc) includes two disc types, the recordable MD that can be recorded ontoand the playback-only MD that can exclusively be played back. Although both types ofdiscs are played in the same way, that is, by irradiating a laser beam on the disc and readingsignals from the reflected light, the ways they are recorded are completely different.Playback-only MDThis type of disc is used in prerecorded MD software marketed in music stores. It cannot berecorded by the user and data is recorded in the same way as a CD, i.e. according to thepresence or absence of small holes called pits. A disc recorded in this way is referred to asan “optical disc”.Recordable MDThis type of disc records data using the magnetism to allow repeated data recordingoperations. A disc recorded in this way is referred to as an “MO (Magneto-Optical) disc”.Sound Cruise