Brand: Sony
Model: Duad
Tape Length: C – 46
Country: Japan
Release Year: 1978
Timeline: 1978
Sort: Duad
Series: Complete series in catalog
Position: Ferrochrom
Tape Type: Type III
Rating: Rate
Ferri Chrome / Ferro-Chrome
The Type III Ferro-chrome pre-dated the Type IV Metal cassette, and was an attempt to rectify the problems inherent in the two previously existing
cassette types (I and II). Type I Ferric oxide tapes had Poor definition in the higher treble regions. Type II chrome tapes were quite flimsy around the bass regions of the sound spectrum. The concept with the Type Ill was to combine, on the tape coating, a layer of Ferric oxide with a layer of chromium dioxide. Theoretically, this would offer the user the enhanced high frequency definition of chrome, plus the fuller bass of the regular
ferric tape. Ferrochrom has two separate tape layers for peak performance even under the most difficult listening conditions. The top layer is pure chromium dioxide for unsurpassed highs and low background noise. The bottom layer is ferric oxide for superior lows and great middle frequencies.
Chrome coatings had a high bias and ferric coatings had a normal bias. The bias for the Type III cassette was thus set in between normal and high, but nearer to normal.
There are no reviews yet.