||530,000yen(around the 1979 time)
|600,000yen(around the 1981 time)
The stereo player system which eliminated a cost
restraint and technical compromise, poured in all the technical know-hows, and
was finished by an one-set one-set handmade in order to pull out the sound of
the disk of one sheet to a limit closely, and also to remove an oscillation as
much as possible and to realize a high fidelity play.
The scheme which
controls DD motor of the linear torque scheme of a slotless and a coreless
structure by Quartz PLL is adopted as a phone motor and a bearing structure.
Furthermore, by the conventional measuring method, the impossible rotation
performance of 0.001% of less than rotation unevenness 0.003% and a rotational
frequency precision is realized by adopting the bearing structure of a SHR
(Stable hanging rotor) scheme where the centroid of the axis-of-revolution part
was set up low.
A SHR scheme is what designed the bearing structure to the
inverted structure of the conventional scheme, an inertia arises in a bearing
part during a rotation, and side pressure has stopped applying to an axis
probably by having brought the supporting point close to a centroid and having
changed the conventional bearing part into the rotation side as for it. And for
the preventing with ガタ, the path clearance of bearing occurs for a minimum and
the inertia of a turntable is set to sufficient torque also to the load
intensity of the cartridge added to the perimeter of a turntable.
high torque motor of the dual rotor structure using an anisotropy ferrite magnet
with a strong attraction of magnet has realized about the same high torque (10
kg-cm) as a record cutting unit.
Furthermore, adoption and the interval of
the servo circuitry which was excellent in the turntable of inertial-mass 700
kg-cm2 or the transient realized the outstanding startup property (it
is a constant-speed rotation in 0.3 second after switchpoint-on) and load
characteristics-proof (it is 1.5kg by stylus-force conversion), and have acquired the rotation property that the stable precision is high.
In addition to the weight saving of a tone arm, the mass concentration
scheme and oil dumping adjustment mechanism which concentrated the mass
on the axis of revolution are carried in the tone arm part.
braking by reliable silicon oil on an arm axis, the reduction of massive [
low-pass ] and cross modulation distortion is realized. Moreover, it is also
possible to be able to control the amount of braking of oil dumping according to
the property of a cartridge, and to turn OFF dumping.
In order that a
tone arm part may make a mechanical impedance make it flat, it repeated the analysis and audition of the oscillation mode of all fractions, and performed
them, and the product made from carbon fiber integrated arm pipe of head shell
one is used for it.
Since a using of a commercial head shell is enabled, a
switching of a straight pipe and S character type universal arm pipe is
The quick stop organization which used together the motor, the
electronic formula brake which applies the power of a reverse rotation, and the
mechanical brake which stops a rotation of a rotor using a plunger by work of an
electronic circuitry is carried.
The motor part and the tone arm part
are fixed to the base with a weight of 12kg which laminated the barium sulfate
of aluminum and high-density material.
Furthermore, the base was completely
floated from the cabinet and the vibration proof structure of the coaxial
suspension scheme which intercepts the oscillation from the sound pressure and
the floor from a speaker is adopted.
In order to make a high howling
margin possible, the insulator of the Mie structure is adopted.
rubber is used, in order to support a 25kg main unit with the oil dumping type
waveguide-plunger structure using a 62mm spring and also to make the surging of
a spring absorb.
Moreover, since the resonant frequency of the insulator is
set as 5Hz or less lower than the resonant frequency of a tone arm, the howling
margin with high vibration proof structure and interval of a coaxial suspension
has been obtained.
It is the design which combined the cabinet of native
wood eye finish of the Brazi LeAnn Lowe's wood, and the book jacket excellent in
the prevention from a howling made from tempered glass with the cabinet.
For the reason in the case of equipping the same arm as P3a, there was a
tone arm as an option.
||Cartridgeless player system
|<Phone motor part (EM-03)>
||Linear torque DC hall motor
||33 1 / 3 or 45rpm
|Rotational frequency precision
||0.003% (WRMS, the FG method)
(WRMS, the Japanese-Industrial-Standard record method)
|Opposite load characteristics
||With no rotational frequency transition (arm
1,000 duty) to 1.5kg of stylus forces
||0.3 second (33 1/3rpm o'clock)
||carrying out 32cm aluminum shaving
appearance (weight of 2.8kg)
||700kg-cm2 (it is an included
about a rubber sheet)
|<Tone arm part (EA-03)>
||Dynamic balance type twin pipe exchange
a straight-with integrated head shell pipe -- and
type universal pipe
|Arm effective length
||+ 1.85 degrees-1.10 degrees
|Stylus-force adjustable range
||0-3g (0.1g step)
|Conformity cartridge self-weight
||4g-52g (wait exchange system)
|Height adjustable range
||With a low-impedance gilding plug
||Collet chuck scheme
||The low-pass brake style by silicon oil
(Dumping fator variable scheme)
|An attached organization
||Direct lever scheme anti skating
oil dumping scheme arm lifter
||Brazi LeAnn Lowe's wood native wood eye
||5mm thickness smoked tempered glass
||A free stop, a removable
||Mie braking by a coil spring, oil, and
||A barium sulfate (15mm), aluminum (10mm)
|A brake with a quick stop
||An electron, a mechanism combined use brake
|Manual operation button
||A feather touch, the soft push SW
||Width 600x height 267x depth of 415mm
||a [ P3 ] type tone arm EA-3 (\160,000)