Pioneer PL-31
PL-31 : ¥ 37,500 (around the late 1960 s?)
PU-31 : ¥ 32,000 (around the late 1960 s?)
Commentary
A stereo record player with a belt drive.
A synchronous motor is used for the motor, and a polyurethane belt is used for the rubber belt.
There was also a player unit PU-31 with only mechanism without cabinet.
.JPG)
Model Rating
| Type | Record player |
| Auto mechanism | Motor electric auto switch Tone arm lifting mechanism |
| Motor | 4-pole synchronous type |
| Turntable | 30 cm Diameter Aluminum Alloy Die-cast (Weight 1.2 kg) |
| Uneven rotation | Not more than 0.12% |
| Signal-to-noise ratio | 45 dB or more |
| Number of revolutions | 33 1/3, 45 rpm |
| Cartridge | MM Type (PL-C9) |
| Needle | 0.65 mil diamond needle |
| Frequency characteristic | 15 Hz to 21 kHz ± 2 dB |
| Channel isolation | 30 dB or More (1 kHz) |
| Output voltage | 5 mv (1 kHz, 50mm/s) |
| Output balance | 1 dB or Less (1 kHz, 50mm/s) |
| DC resistance | 500 Ω |
| Load resistance | 50k Ω |
| Needle tip compliance | 12x10-6cm/dyne |
| Tracking error | + / - 1 ゜ |
| Proper needle pressure | 2g ~ 3g |
| Tone arm | Light Metal Static Balanced Pipe Arm Main weight with needle pressure direct reading gauge |
| Range of variable needle pressure | 0 ~ 4g |
| Exchange needle | Diamond needle for stereo PL-N9 (¥ 2,500) |
| Pwer | 100 VAC, 50Hz/60Hz Switching Type |
| External dimensions | PL-31 : Width 460x Height 166x Depth 360 mm PU-31 : Width 410x Height 150x Depth 315 mm |