Pioneer PL-21
PL-21 : ¥ 29,900 (around mid 1960 s)
PU-21 : ¥ 24,500 (around the mid 1960 s)
Commentary
A stereo record player equipped with an auto-return mechanism.
The auto-turn mechanism automatically returns the tone arm when the performance is finished and turns off the motor power.
The tone arm is equipped with a sub-weight that reads the needle pressure directly, and an oil dump type arm elevation mechanism.
The MM type cartridge PL-N6 has been adopted.
There was a player unit PU-21 with only mechanism without cabinet.
Model Rating
| Type | Record player |
| Auto mechanism | Linked to oil dump arm elevation mechanism Motor power supply auto switch Idler auto controller Auto-return / auto-cut mechanism Tone arm lifting mechanism |
| Motor | 4-pole synchronous type |
| Turntable | 25 cm Diameter Aluminum Alloy Die-cast (Weight 1 kg) |
| Uneven rotation | Not more than 0.2% |
| Number of revolutions | 33 1/3, 45, 78 rpm |
| Cartridge | MM Type (PL-C6) |
| Needle | 0.7 mil diamond needle |
| Frequency characteristic | 20 Hz to 21 kHz ± 2 dB |
| Channel isolation | 20 dB or More (1 kHz) |
| Output voltage | 5 mv (1 kHz, 50mm/s) |
| Output balance | 2 dB or Less (1 kHz, 50mm/s) |
| DC resistance | 500 Ω |
| Load resistance | 50k Ω |
| Needle tip compliance | 6x10-6cm/dyne |
| Tracking error | ± 1.5 ° |
| Proper needle pressure | 3g ~ 4g |
| Tone arm | Static balanced tone arm of light metal |
| Exchange needle | Diamond needle for stereo PL-N6 (¥ 2,400) Sapphire Needle for SP Monaural PL-N6S (¥ 1,000) |
| Pwer | 100 VAC, 50Hz/60Hz Switching Type |
| External dimensions | PL-21 : Width 474x Height 190x Depth 380 mm PU-21 : Width 380x Height 150x Depth 305 mm |