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74 min 59 sec professional MiniDisc.
Specially developed for professional studio and location recording, and broadcast use, HHB MiniDiscs exceed Rainbow Book specifications and exhibit block error rates ten times lower than consumer MD media.
With a recording time of 74 minutes 59 seconds, the MD74 uses an advanced thin film sputtering technology to apply recording, dielectric and reflective layers to a polycarbonate substrate, which is protected by a tough UV coating. The precision manufactured stamper ensures consistently accurate tracking for every disc and a special lubricating agent results in the best possible recording head contact. A durable shell combines with a foil shutter assembly to protect the disc from contamination.
74 min 59 sec professional audio MiniDiscBlock error rates 10 times lower than consumer media1,000,000 read/write cyclesUV coating protects discsLubricating agent gives optimum contact with recording headDurable shell and foil shutter assemblySecure archival life in excess of 50 years
Recording time : 74 minutes
Block error rate (average) : 13,000
Disc diameter : 64.8mm ± 0.2mm
Disc thickness : 1.2mm ± 0.12mm
Track pitch : 1.60 ± 0.1µm
Write / read cycles : 100,000
Archival stability : 50 years
Operating temperature : -5 to +55ºC(23 to 131ºF)
Operating humidity : 5 to 95% RH
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