|69,500yen(around the 1972 time)
Belt drive pre Ya announced as a twin arm
specification machine of highest-class model PL-41D of those days
hysteresis synchronous motor is adopted as a motor, eight poles are used from
four poles, a rotational frequency is dropped on one half, a speed ratio is made
small, and rotation unevenness is decreased. The diameter of the motorized
pulley also became twice as many thickness as this, and ±0.3% or less of the
rotational frequency precision is realized.
The special suspension of the
dual structure by synthetic rubber and a spring is adopted as a join of a motor
and a board.
The thing made from polyurethane is adopted as the rubber
belt used by a belt drive scheme.
By peculiar manipulation, this belt presses down thickness unevenness to
5/1000mm or less, and is aiming at the modification of a property.
The turntable has adopted the thing of the
diameter of 31cm of aluminum alloys which thickened the perimeter.
honing manipulation of the bearing is carried out, the axis carried out
precision polish of the material excellent in wear resistance, and outstanding
inertia efficiency is realized.
The S character type pipe arm is adopted
as a tone arm, and the stylus-force coordination of a lateral balancer, a
magnetic-repulsion type anti skating organization, and a Direct-reading scheme,
the arm height adjusting device, etc. are carried.
Moreover, the arm of two
flat knots has adopted the panel switching system in order to make all arms a
mounting possible. This panel fraction serves as a fixed scheme with four
The plug-in type MC transformer storage part is carried, and MC
type cartridge can be easily used by inserting optional MC transformers (PP-402
etc.) in the exclusive space of an on-board.
The indicator combination
EP adapter by which the belt protective device and the proper overhang of a
new-installation meter are obtained is attached, only by uniting with the
numerical character which had the needle point minced on a center shaft, a
proper overhang is obtained and the minimum value of a tracking error can be
The free stop hinge is carried in the book jacket.
PC-20 which is man-month type cartridge is carried in the cartridge.
The cartridge table lamp which can be installed to three, and the accessories storage part are prepared.
||8 pole hysteresis synchronous type
||The product made from diameter aluminum
alloy die-casting of 31cm (weight of 2.2kg)
||0.07% or less
||52dB or more
||33 1 / 3 or 45rpm
||man-month type (PC-20)
||S character type static balance type
|An attached organization
||Magnetic-repulsion type anti skating
Cartridge table lamp
storage part, an accessories supply storage part
type counter wait
Overhang indicator combination EP adapter
rubber vibration insulator leg
||Width 580x height 219x depth of 562mm
||Arm board PP-305 (1,600yen)
Transformer for MC PP-402 (8,700yen)