DENON 1991 HD-MS, HD8S, DX4 - cassette tapes
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A DENON Audio Tape gatefold leaflet, international release with no exact print date, 1991 is inferred from the lineup. Inside is the full range of the year: Metal HD-MS, High-bias HD8S/HD7S/HD6S on EX II purified black crystal and “XII-Maximized Metal” formulations, ferric DX4/DX3/DX1/DX and the DAT R-120DT with a new binder system at B.E.T. 55 m²/g. The middle panel shows the new shell with oblique dual windows and a length table covering everything from 46 to 120 minutes; the back carries full specs measured against a DENON tape tester deck.
| Model | Type | Price |
|---|---|---|
| DENON HD-MS | Type IV cassette tape | |
| DENON HD8S | Type II cassette tape | |
| DENON HD7S | Type II cassette tape | |
| DENON HD6S | Type II cassette tape | |
| DENON DX4 | Type I cassette tape | |
| DENON DX3 | Type I cassette tape | |
| DENON DX1 | Type I cassette tape | |
| DENON DX | Type I cassette tape | |
| DENON R-120DT | DAT cassette |
| Technical terms | Translation |
|---|---|
| XII-Maximized Metal | XII-Maximized Metal - formulation used in DENON HD-MS, ultra-fine metal particles with high coercivity and uniform orientation |
| EX II purified black crystal | EX II purified black crystal - fourth-generation evolution of the 1983 DENON process, metal particles at the core of the High-bias HD7S and HD8S |
| B.E.T. 55 m²/g binder system | New binder system for the DAT R-120DT with dense packing of ultra-fine particles, B.E.T. specific surface area 55 m²/g |
| Newly designed cassette shell | Shell with oblique dual windows and asymmetrically arranged centre bars to disperse resonances and minimize modulation noise |
B 02091
