Audio Database


Pioneer PL-21 PL-21: 29,900yen(middle of the 1960s)
processor-unit-21: 24,500yen(middle of the 1960s)

The stereo record player which carries the Ohtori turn organization.

After a performance finishes according to an auto turn organization, a tone arm returns automatically and the power source of a motor is set to being turned off.

The sub wait of a stylus-force Direct-reading type is carried in the tone arm, and also the oil dumping type arm elevation organization is carried.

PL-N6 which is man-month type cartridge is adopted as the cartridge.

There was player unit processor-unit-21 of only a mechanism without a cabinet.

Rating of a mode
Form Record player
Auto organization An oil dumping arm elevation organization is interlocked with.
Motor power-source auto switchpoint
Idler auto controller
Ohtori turn auto cut organization
Tone arm rise-and-fall organization
Motor 4 pole synchronous type
Turntable The product made from diameter aluminum alloy die-casting of 25cm (weight of 1kg)
Rotation unevenness 0.2% or less
Rotational frequency 33 1/3, 45 or 78rpm
Cartridge man-month type (PL-C6)
Needle 0.7mil diamond needle
Frequency characteristic 20Hz-21kHz}2dB
Channel isolation 20dB or more (1kHz)
Output voltage 5mV (1kHz, 50 mm/s)
Output balance 2dB or less (1kHz, 50 mm/s)
Direct current resistance 500ohm
Load resistance 50kohm
Needle point compliance 6x10 to 6 cm/dyne
Tracking error }1.5 degrees
Proper stylus force 3g-4g
Tone arm Product static balance type tone arm made from a light metal
Switching needle Diamond needle for stereos PL-N6 (2,400yen)
Sapphire needle for SP monophonic recordings PL-N 6S (1,000yen)
Power source AC100V, 50Hz/60Hz switching type
Dimensions PL-21: Width 474x height 190x depth of 380mm
processor-unit-21: Width 380x height 150x depth of 305mm