Audio Database

The

Pioneer PL-1200A 51,000yen(around the 1974 time)

Description
 
The record player which adopted the direct-drive scheme.

The brushless DC servo motor of a direct-drive scheme which drives a turntable directly is adopted as a drive motor.
Moreover, the brushless and DC servo scheme which controls a rotational frequency by work of the electronic circuitry which consisted of a transistor and diode automatically are adopted as roll control.

The tone arm part is improving trances capacity by examining the form and the quality of the material of the bearing part which influences a sensitivity greatly. Moreover, adoption of the hole vacancy lightweight shell is raising the precision for carrying out.
The original anti skating organization which combined the spring and the cam is adopted as cancellation of an inside force. Furthermore, the stylus-force tick-mark value serves as a scheme showing an anti skating bias value as it is, and it can adjust also in a record performance.

PC-330 which is man-month type cartridge is adopted as a cartridge.

The double structure cabinet which combined hard plywood and the metal base is adopted as a cabinet.
Moreover, the insulator which can be adjusted level is adopted and the influence by the howling or an extraneous vibration is proposed.

The change of a rotational frequency has adopted the electronic formula which can be held only by constant switching of an electronic circuitry. furthermore -- while supervising the stroboscope minced by the perimeter of the turntable -- 33 both 1 / 3 or 45rpm -- although -- it can tune independently finely by ±2% of within the limits.
Moreover, since the motor serves as a direct drive by a voltage stabilizer, it does not need to exchange pulleys with the line frequency (50Hz/60Hz) of a using region.

The arm elevation organization in which neither a record nor its needle point is hurt is adopted.

The layout which brought the operation function together in one panel is adopted.

The stroboscope light is carried.

The low capacity (loop station connector) output code which can respond to 4ch play is adopted.


Rating of a mode
Form Record player
Motor Brushless DC servo motor
Drive system Direct-drive
Turntable The product made from diameter aluminum alloy die-casting of 31cm
Rotational frequency 33 1 / 3 or 45rpm (a fine tune is possible)
Rotational frequency switching Electronic formula
Rotational frequency fine-tune span Less than (each rotation independent coordination) ±2%
Rotation unevenness 0.05% or less (WRMS)
S/N 58dB or more
Tone arm Static balance S character type pipe arm
An attached cartridge man-month type (PC-330)
An attached organization Arm elevation organization
Anti skating organization
Lateral balancer
Plug-in system head shell
Stroboscope light
Horizontal-coordinate type insulator
The semiconductor used Transistor: 12 pieces
Diode: 19 pieces
Supply voltage AC100V, 50Hz/60Hz
Dimensions Width 480x height 185x depth of 410mm
Weight 10.5kg