Audio Database


42,800 yen(around the 1981 time)


The stereo cassette deck carrying the Dolbey C type NR.

Although Dolbey's C fundamental principle of operation is the same as B type, in order to obtain the twice [ B type ] as many amount of noise improvements as this, by C type, two steps of B type NR circuits were used having piled them up, it is making a low-level stage and a high level stage take charge of, and the noise improvement of total 20dB is realized.
Moreover, it corresponds to the increase in the amount of encodings, and by C type, according to making it operate from frequency lower than B type which sets the standard frequency of a start of operation as 180Hz, and is set as 485Hz, loose encoding starts the large range and the sense of incongruity in Hearing impression is stopped. Furthermore, in order to prevent the breezing phenomenon in which a noise breathes, the damping time constant was set as B type one half, and also the slide band system which start frequency of operation slides according to the frequency of the main ingredients of an incoming signal is adopted.
Moreover, in order to correspond to the Dainyuu power signal of a high region, the anti saturation circuit and the Spectrum skewing circuit are built in.

The bias fine-tuning mechanism other than a three-step tape selector is carried, and it can carry out variable [ of the amount of bias ] in ±20% of range by operation of the fine-tuning knob of the front panel.

DX magnetic recording reproducing head which adopted the hard complex material as the core spacer, and the Hi-Bs double gap ferrite erasing head are carried in the head.

The MPX filter and the timer standby mechanism are carried.


Rating of a mode
Form Stereo cassette deck
Truck form Four trucks [ two ]
Head DX head
Motor DC servo motor
Wow and flutter 0.038%(WRMS)
Fast forward / rewinding time 90 seconds (C-60)
Frequency response
- 20VU recording : LH tape: 20Hz - 16kHz
CrO2 tape: 20Hz - 17kHz
Metal tape: 20Hz - 18kHz
ZeroVU recording : CrO2 tape: 25Hz-8kHz+2 -3 dB
Metal tape: 25Hz-12.5kHz+2 -3dB
Signal to noise ratio Dolby NR off:57dB
Dolby B on:65dB
Dolby C on:73dB
Distortion 1.0% (metal tape)
Input sensitivity/impedance Line: More than 50mV / 50kohm
Mic: 0.3mV/200ohm-10kohm
An Output voltage/impedance Line: More than 0.55V/50kohm
Headphone: 0.8mW/eight ohms
Auto stop system Mechanical full auto stop
Power supply voltage AC100V, 50Hz/60Hz
Power consumption 14W
Dimensions Width 420x height 110x depth of 280mm
Weight 4.4kg