The record player which polished up the tone quality
reflecting the technology of the improvement in a tone quality obtained with the
The head shell integral-type straight arm of the dual
structure of carbon graphite excellent in the light weight, the high rigidity, and the damping characteristics and the high-rigidity aluminum base is adopted
as a tone arm. In the vibration analysis by a computer, the complicated
splitting vibration event is eliminated at the same time he examines the
The intensity of the head shell part and the connector part
of a root was also fully raised, and the ill effect by vibration is eliminated.
In order to realize banishment and the high sensitivity of a low-pass
vibration simultaneously, the level good transformation silicon oil braking
scheme is adopted.
This sinks a braking fin (the shape of a ring) into the
silicon oil poured into the oil cup of the arm axis upper portion, has a
structure to which a dumping is applied, made the equivalent mass of various
cartridges and an arm match proper, and has extended the adaption span of an
Furthermore, by cutting the leading end of a fin into 45 degrees, braking
for which it was horizontally and perpendicularly suitable, respectively
is made into the structure which can be applied simultaneously, and Q
of a low-pass vibration is reduced. Moreover, cross modulation distortion
is sharply improved by the synergistic effect with the mass centralization
system which brought the main wait of the arm close to an axis of revolution.
The heavy weight class arm base of die-casting nature which
gave the stabilizer effect is adopted as the arm base. The higher-resolution
low-pass play is realized by fixing an arm firmly and suppressing a partial
In order to raise a rotation precision, the coreless
structure which an cogging does not generate theoretically is adopted.
Furthermore, the rotation property excellent in adopting SH and the rotor scheme
which moved the supporting point (bearing) of the rotor which suited the motor
bottom immediately under the turntable is realized. SH and a rotor scheme have
canceled from the origin the reverse cone motion of the motor shaft which was
not able to be prevented with the conventional structure, and the motor shaft
which happens by the slight path clearance between bearings.
Moreover, in order that the needle point may banish the load
variation produced by the resistor received from a record sound track,Adoption
of a turntable with a diameter [ with a coreless Quartz PLL DC servo hall motor
with the starting torque of 1.6 kg-cm and the inertial mass of 330 kg-cm2 ] of
31cm has realized stability which does not cause a rotational frequency
variation to the load intensity of 200g of stylus forces.
Pioneer is using three hall devices which carried out the process development
for the magnetic pole change (switching) organization of a motor. In addition,
the detailed noise is banished by searching for the manipulation precision of
micra order until it results in the part of a detail.
The silence lift
up organization out of which mechanism sound does not come is carried. This is
what adopted the moving coil scheme which applied the principle of operation of
the speaker to the elevation organization in which an arm is made to go up and
down, and has a structure which carries out a uncontacted operation on DC
Moreover, the scheme which performs a uncontacted detection with
the hall device and magnet inside an arm axis is adopted as a termination
location detection of the sound track of a record, there is no occurrence of side pressure in it, and the sensitivity of an arm is not spoiled.
Furthermore, the quick stop organization of a pure electronic formula is
The high-density cabinet (marble ebony finish) which laminated
the solid board is adopted as a cabinet, and the deflection of the cabinet by
the reaction of the angular moment of a high torque motor is prevented
Moreover, the original low centroid insulator was
adopted as the insulator supporting this, and stability is secured to it also to
oscillations from the outside, such as a howling.
oxygen-free-high-conductivity-copper line with few transmit losses is adopted as
the lead wire and the processor-unit code of a tone arm.
type universal arm pipe (with a large-sized wait) which can perform a switching
of a head shell easily is equipped, and all cartridges can be enjoyed with twin
pipe exchange system.
Moreover, the shell integral-type straight arm pipe of
carbon graphite is also an option, and only the number of cartridges arranges a
straight arm, and can exchange and enjoy a cartridge easily.
||Cartridgeless player system
|<Phone motor part>
||Coreless Quartz PLL DC servo hall motor
||SH and a rotor scheme
|Turntable inertial mass
||330kg-cm2 (turntable sheet
||33 1 / 3 or 45rpm
|Rotational frequency change
||The electronic formula by a short stroke
||0.011% or less (WRMS/FG Direct-reading
0.023% or less (WRMS/Japanese Industrial Standard)
||82dB or more (DIN-B)
65dB or more
(Japanese Industrial Standard)
||0% (less than 200g 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
||+ 2.7 degree--1.3 degree
||1g of wait 1 rotations
|Conformity cartridge self-weight
||Straight: 3g - 11g
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 490x height 190x depth of 401mm
||Shell integral-type straight arm JP-515 (7,000yen)