TDK D (1992-1997 US) Cassette Tape TDK D Cassette Description The TDK D cassette tape is a type I audio cassette designed for reliable and competent audio recording. It was introduced in the early 1970s and remained in production until the mid-1990s. This cassette tape is known for its basic yet functional design, making it a staple in many audio collections. TDK D Technical Specifications Magnetic Particle: Grained Ferric Coercivity: 380 Oe Remanence: 1450 Gauss Squareness Ratio: 0.81 Operating Bias: -0.5dB MOL 315Hz: +3.0dB MOL 10kHz: -8.0dB Sensitivity at 315Hz: -0.5dB Sensitivity at 3.15kHz: -0.5dB Sensitivity at 10kHz: -0.3dB Sensitivity at 16kHz: -0.0dB Bias Noise: -55.0dB TDK D Key Features Basic Type I Design: Suitable for general audio recording needs. Reasonable Performance: Offers competent sound quality. Variety of Lengths: Available in lengths ranging from 30 to 180 minutes. Improvements over Previous Generation The TDK D evolved from the TDK LN, which was introduced earlier. The TDK D cassette tape improved upon the basic design of its predecessor, offering slightly better performance and reliability. In Japan, it was sold under the TDK AE name starting from 1987.
