Pioneer RT-61
¥ 61,500 (around 1973)
Commentary
This is a stereo tape deck with a Oatley berth function.
No idler is used at all, and both the capstan and reel stand are belt drives of the all-belt drive system. In addition, since it is a 1-motor system, the generation of machine sound is cut off by an extremely simple mechanism.
In addition, uneven rotation and S/N have been improved by adopting a hysteresis synchronous motor.
In addition, the symmetrical structure of the center capstan drive ensures stable tape travel because it operates under exactly the same conditions in both directions.
Oatley Verse works during playback.
In addition to manual reversal by push button, automatic reversal is possible by attaching sensing tape to the tape end.
In addition, auto-repeat, which repeats continuous long-time playback, is also possible by attaching it to both ends of the tape.
A high-torque motor and an auto clutch are used for reversing, and the time required for reversing is only 0.5 seconds.
Recording is for forward direction only.
An easy-loading system is adopted, and the pinch roller sinks into the main body at the time of stop, and it is structured to rise at play.
Since there is no obstacle in front of the head, it can be easily taped.
In order to support not only standard tapes but also L. H. tapes, it is equipped with a tape selector that can change the characteristics of the deck according to the tape.
The built-in amplifier is a solid-state amplifier using carefully selected silicon transistors.
The Head cover is a one touch opening and closing type with a convenient structure for head cleaning and degaussing.
Equipped with a pause lever that can be paused for either recording or playback.
The metal reel (PR-80) in the picture was sold separately.
Model Rating
| Type | Playback auto-reverse stereo tape deck |
| Mode of operation | 1-Motor All Belt Drive Center capstan mechanism Automatic and manual reversing (regeneration only) |
| Heads | One 4-track, 2-channel R / R head One 4-track, 2-channel playhead One 4-track, 2-channel erase head |
| Motor | Hysteresis synchronous motor |
| Tape speed | 19cm/s, 9.5cm/s |
| Quick winding speed | Approximately 110 seconds (with 370m tape) |
| Uneven rotation | 0.12%RMS(19cm/s) 0.10%WRMS(19cm/s) |
| S/N | LH Tape : 56 dB General Tape : 53 dB |
| Distortion factor | LH Tape : 1.0% General tape : 1.2% |
| Frequency Response (19cm/s) | 30 Hz to 20000 Hz 50 Hz to 15000 Hz ± 2 dB |
| Input | Microphone Input : 0.3 mv ~ 240mV/50k Ω Line Input : 30 mv ~ 24V/330k Ω |
| Output | Line output : 0.775 V (at 0 point of level meter) Re-recording : West German DIN standard Headphone Jack : Output Load 8 Ω, for Stereo |
| Semiconductor used | Transistor : 14 Diode : 6 |
| Attachment mechanism | Tape Selector Switch (LH, General Tape) Pause lever Four digit tape counter Hinged Head cover |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 55W |
| External dimensions | Width 421x Height 378x Depth 174 mm |
| Weight | 12kg |
| Sold Separately | Metal Reel PR-80 (¥ 1,200) |