The record player system which adopted the newest
technology as the tone arm and the motor and also by which the silence lift up
functionality also carried the thought of PL-70 which tackled the true nature of
the player from the front as it is.
The internal loss has adopted as an
arm material the carbon graphite developed uniquely as a large material with
high rigidity, and the Low-Mass and the high rigidity arm are strongly realized
to a vibration by combining with the base of the aluminum pipe of a high purity.
Moreover, it is considering it as the taper form which a second moment of area
increases as arm pipe form is advantageous in respect of weight, and has adopted
the straight type with which a high intensity is obtained and also approaches
focusing on an arm, and it is improving rigidity, measuring Low-Mass-ization.
Furthermore, to the connector of the arm root fraction, sufficient intensity has
been obtained using the large brass of a Young's modulus.
Moreover, a light
weight and the carbon fibrous composite of a high rigidity are adopted also as a
head shell, and, in addition to the merit of a material, the intensity is raised
by attaching a rib to form.
Vibration analysis theory is applied to the
determine of the form of a tone arm. With a computer modal analyzer, the whole
vibration of an arm is grasped in real time, and this controls the whole
balance, and makes an oscillation characteristic into a flat,A measurement
technique attaches a sensor to each part of a tone arm, and by computer, an
oscillating-component cloth is expanded to about 1000 times of actual
oscillating displacement, and it is observing it as an animation.
The level variable oil braking scheme which a high sensitivity can realize
is adopted controlling the harmful low-pass vibration generated by the
curvature and decentration of a record.
Silicon oil is poured into the oil cup prepared in
the arm axis upper portion, and this has a structure to which a dumping is
applied by sinking the braking fin of the shape of a ring which cut the leading
end into 45 degrees. Since the amount of braking for which it was
perpendicularly and horizontally suitable, respectively is applied at a Tip of
the Day, 9dB has improved to a suppression of the Cong modulation distortion
which is reducing Q of a low-pass vibration and makes play sound muddy by this.
Moreover, the variation per hour and the viscous transition by a temperature
have adopted little silicon oil, by storing in the oil cup which carried out
high precision molding of this silicon oil further, it is considered as a
structure without the blot leakage of oil, and the robustness is improved to
It is the design to which the amount of braking also becomes
large as the tick mark of the level adjustment ring of a level good
transformation oil braking scheme becomes large to a freelancer, and 1-5 in the
location of 0. The hericoid type which performed the high-precision wrapping
manipulation is adopted as this level adjustment ring, and the partial vibration
The tone arm part brought the main wait close to an arm
axis, and the mass centralization system which reduced the equivalent mass of
the needle point is used for it. By making the moment of inertia of a tone arm
reduce, the basic performance before applying an oil precision is also raised.
No simple contacting and detection scheme with a hall device and a
magnet, and the silence lift up organization by moving coil drive system arm
elevation without a sound of operation are adopted.
Moreover, after a
performance is completed, an arm goes up calmly, and the pure electronic quick
stop organization which a turntable stops automatically is carried.
cogging which causes rotation unevenness theoretically has adopted as the motor
of an actuator the Quartz PLL DC servo motor of the coreless structure to
generate [ no ]. By not using a core by using a drive coil as an empty core, but
generating a magnetic field with a flat coil, this loses the strength of a
partial magnetic field and has the structure where an cogging does not occur.
Furthermore, in order to improve the nakedness property before a servo, SH
and a rotor (Stable Hanging Rotor) scheme are adopted. This has a structure
which moved the supporting point of the rotor which suited the motor bottom
until now to immediately under the turntable, and has succeeded in coinciding
the centroid and the supporting point of a turntable mostly by this.
Furthermore, the side pressure added to the bearing which is a heart of a
rotation system is reduced, and the stability of the turntable is raised.
Different low voltage casting from the conventional process is adopted
as a turntable. This poured in the metals slowly into the model molded very
precisely, it is a handmade process which carries out a natural air cooling over
many hours, there are few スs and air bubbles, and since the interior is kept
uniform, it has realized the dynamic balance which excelled the conventional way
in the high-density.
Moreover, in order to carry out the deadning of a
turntable's own vibration, special vibration proof material was given to the
rear view, and the resonance which has an ill effect on a tone quality is
The 8.5kg heavy weight class cabinet designed by laminating
the needle-leaf tree solid board chosen after the trial production and the study
with various materials is adopted as a cabinet.
Moreover, the centroid of a
pre Iasi stem and the supporting point of the insulator were made into the almost same height, and the insulator of the newly developed low centroid
structure supported by a spring as shown in a construction drawing is adopted as
In order to suppress the transmit loss in the lead wire,
the output codes, and those contacts of a tone arm to the minimum, the
oxygen-free-high-conductivity-copper line of low capacity and the terminal of
gilding are adopted.
The smoked acrylics hood of the 5mm thickness
completed one by one by handcrafts is equipped standardly.
sheet excellent in the acoustic feature is adopted.
S character type
switching arm pipe with an easy switching of a head shell is carried (with a
Moreover, the shell integral-type straight arm of carbon
graphite is also an option, and it is also possible only for the number of the
cartridges to be used to arrange a straight arm pipe, and to carry out a
cartridge switching simply.
||Cartridgeless player system
|<Phone motor part>
||Coreless Quartz PLL DC servo hall motor
||SH and a rotor scheme
|Turntable inertial mass
||480kg-cm2 (turntable sheet
||33 1 / 3 or 45rpm
|Rotational frequency change
||The electronic formula by a short stroke
||0.008% or less (WRMS/FG Direct-reading
0.018% or less (WRMS/Japanese Industrial Standard)
||85dB or more (DIN-B)
68dB or more
(Japanese Industrial Standard)
||0% (less than 300g of stylus forces)
||Less than 1/3 rotation
|Velocity detection scheme
||Perimeter integrator type FG
|Rotational frequency deflection
||0.002% or less
||Time drift : 0.00008%/h
drift : 0.00003%/degree C
||Pure electronic formula
|<Tone arm part>
||Good transformation oil braking scheme
Static balance twin pipe exchange system pipe arm
||+ 1.2 degrees-1.3 degrees
||1g of wait 1 rotations
|Conformity cartridge self-weight
||Straight: 3g - 14g
S character type: 6g
- 32g (shell lump)
|Height adjustable range
||Carbon fiber composite material
|An attached organization
||Quartz locking-in Decatur
Silence lift up (electronic formula)
|The semiconductor used etc.
||Quartz crystal: One
||Width 550x height 214x depth of 440mm
||Shell integral-type straight arm JP-516 (9,000yen)