Technics RS-686D(D-86)
¥ 129,000 (around 1976)
Commentary
Portable stereo cassette deck that is portable.
It uses an anti-rolling mechanism that is strong against vibration and minimizes uneven rotation even during moving recording.
FG servo DC motor is used as the drive motor.
We have introduced a large number of stainless steel materials with excellent abrasion resistance in order to pursue precision of components.
The head section is composed of three heads : an erasing head, a recording / reproducing head, and a monaural monitor head.
Built-in head amplifier with a wide dynamic range for microphone recording.
The REC/PLAY buttons that are frequently used are arranged to improve operability.
Equipped with an end-eye to announce the end of the tape and a silent stop function.
Each level meter has its own peak indicator on the dial face.
The level meter can also be switched to check the meter light and battery.
It has a built-in limiter circuit to enable low-distortion recording in live performances.
Equipped with a low-cut filter that effectively eliminates the pops of on-microphone recording from the recorded signal.
Equipped with a 5 cm aperture monitor speaker with a maximum output of 200 mW, the volume can be adjusted with the speaker volume.
Equipped with a tape selector that can switch between two stages of bias (High/Low) and two stages of equalizer (70 μ sec/120 μ sec).
Model Rating
| Type | Portable stereo cassette deck |
| Head configuration | HPF for recording and replay For Monitor Playback : Permalloy For Erase : Double Gap Ferrite |
| Motor used | FG servo motor |
| Frequency characteristic | Normal : 30 Hz to 15 kHz CrO2 : 30 Hz to 17 kHz |
| Signal-to-noise ratio | Dolby out:57dB Dolby in : 5 kHz or more, 10 dB improvement |
| Wow flutter | 0.07%(WRMS) |
| Input Sensitivity / Impedance | Mic : 0.25 mV (-72dB) / 400 Ω ~ 10k Ω Line in:60mV(-24dB) |
| Output Level / Impedance | Line out : 420mV/22k Ω or more Headphone : 65mV/8 Ω |
| Spekers | 5 cm cone type |
| Monitor output | 200 mW (maximum) |
| Semiconductor used | Transistor : 39 FET : 2 IC : 11 Diode : 30 pcs Other semiconductors : 4 pcs |
| Pwer | 9 VDC (6 AA Dry Batteries) AC : Using the included AC adapter |
| Power consumption | Approx. 12W |
| External dimensions | Width 243x Height 77x Depth 200 mm |
| Weight | Approximately 3 kg |