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TDK MA-R and TDK MA-XG

Magnetic Particle: Finavix

Coercivity: 1130 Oe
Remanence: 3300 Gauss
Squareness Ratio: 0.85

Operating Bias: +0.5dB
MOL 315Hz: +6.0dB
MOL 10kHz: +0.5dB
Sensitivity at 315Hz: +1.2dB
Sensitivity at 3.15kHz: +1.8dB
Sensitivity at 10kHz: +2.5dB
Sensitivity at 16kHz: +3.0dB
Bias Noise: -58.0dB

TDK MA-R was a top pf the line of type IV cassettes. The formulation is based on Finavix particle. It is very heavy - early models have metal shell to reduce vibrations. State of the art performance. It appreared first around 1979.


Japan

US

Europe

79-81

 TDK MA-R 1979

82-84

 TDK MA-R 1982

84

 TDK MA-R 1984

85-89

 TDK MA-XG 1985 TDK MA-XG 1986 TDK MA-XG 1986

90-94

 TDK MA-XG 1990 TDK MA-XG 1990 TDK MA-XG 1990

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