Luxman pd 444 brochure

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Crystal phase locked loop direct drive turntable with provision for two tonearms.

Quite frequently we encounter strong demand of audio buffs for a turntable which can use a long-type tonearm or 2 tonearms.
Strange to say, however, there is no adequate one available in the marketplace.
To cater to such requirements, LUX decided to develop an epochmaking turntable with provision for 2 tonearms, including a long one.
The P0444 is a direct drive quartz-locked turnuble, and its most outstanding feature is its ability to remove all kinds of external load
- variation thanks to our exclusive Load-Free Spindle system. Additionally, the P0444 is made extremely resistant to howling
and mechanical vibration by means of insulators of a 2-step brake system with the lowest resonant frequency,
and an ultra heavy chassis of sandwich structure made from 2 thick iron plates and a high-density chip bead.
Needless to say, all the necessary conditions for a high grade disc player are satisfied.
No tonearm is supplied with this unit. It is intended for installation of your favorite tonearms.

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Load-Free Spindle Motor:

Though basically quartz-locked direct drive system, a newly developped
motor is empIOyed to alleviate the load of the turntable platter applied to
the bearing, which is named "Load-Free Spindle" system. The platter
is made to float by offsetting most of its weight by repelling power of
magnetics in the motor, which makes it possible to reduce the pletter's
weight on the bearing to about 1/5 of its actual value.

Even the best quartz-lock system is not a cure-all . and it is effective
only in the suppression of external disturbing load variations ranging
from DC to 1H2. To reduce those of relatively higher frequencies (5 - lon)
that cannot be controlled by the quartz lock system. the flywheel effect of
the platter must be utilized. The heavier the platter and consequently the
larger its moment of inertia. the better.

But here arises a problem with respect to the life of the bearing. A pro-
minent feature of this turntable lies in the beautiful solution of this pro-
blem. With the "Load-Free Spindle" system, the motor itself has the
repelling power to float the turntable platter unlike the conventional
magnet-float system where the platter is made floating by an additional
magnet deVice.

Slim yet Ultra Heavy Chassis of Sandwich Structure:

An unusually effective counter-measure against howling is hidden in
the slim, compact mpearance - an ultra heavy chassis of sandwich
structure consisting of 2 pieces of 3.2mm thick iron plate and a him-density
chip board. The iron plate itself is heavy in weight but susceptible to
resonance, and therefore a hiyi-density chip board which absorbs resonance
is inserted between 2 iron plates. Thus we realized an ideal solid and
resonant-free chassis for a disc player.

Item-thick Oiip Board
Ame-e (alminium dim l
Arm-ll (alminium extrusion)

2oStep Brake Insulator:

Generally speaking, with an insulator the lower the fo (the minimum
resonance frequency) and the higher the Q (sharpness of resonance). the
better the cut-off characteristics. If 0 is simply made higher. however,
the turntable becomes unstable against vibrations of large amplitude
in the vicinity of lo. To cope with these incompatible factors, a new 2-step
brake insulator was developed. The neoprene rubber supporting the
shaft of the insulator works against vibrations of small amplitude which
cause acoustic feedback, and good cut-off characteristics are procured.
While to counter the vibrations of large amplitude effective are the spring

and viscous brake of neoprene rubber with silicon grease are effective.
In other words, both cut.off characteristics and stability of operation are
made compatible.

lron Ring

Aluminium Cover

Felt

Sliding Arm-base for Easy Replacement of Tonaarm:

Precision arm-rails make it possible to install any of your favorite
tonearms with 'one-touch' operation. It is constructed so as to fix the
tonearm firmly at the optimum position by simple operation of a lever
while sliding the arm-base in line with the over-hang gauge on the panel.
The arrwbase is made of die-cast zinc resistant to howling. Also a 5mm
thick extruded alminium plate is employed as the arm panel in view of
elegance at the surface and easy provision of various tonearms.

Platter Mat to Hold D'oc Firmly:

A platter mat fit for the shape of the disc is empl0yed to ensure the
closest possible contact between the mat and disc. The surface of the mat
is specially treated to realize smoothness, and the mat is made of
highdensity rubber to damp the platter itself.

Other Features:

Acrylic plates of 4-mm thickness are put together to form a dust
cover. which is resistant to howling and external vibration. Also the hinge
for the dust cover is incorporated into the slim chassis to provide a
compact appearance. A semifree-stop type hinge is used so that the total
weight of the dust cover is applied to the turntable when it is closed.

This also helps improve anthhowling characteristics.

SPECIFICATIONS
(PHONO MOTOR SECTION]
Driving System: Direct Drive System
Motor: Crystal Control, Loed-Free-Spindle System Flat
Brushless DC Servo MotOr
Turntable Platter: 30cm (12") aluminium diecast 2.5kg
Rotation: 33-1/3. 45 rpm (2-speed)
SIN Ratio: No less than 75dB
Wow 8i Flutter: No more than 0.025% W.R.M.S.
Torque: (kg/cm
Temperature
Characteristics: below 0.00003%l° C
Turning accuracy: 0.002%

[ADDITIONAL FEATURES]

Acrylic Resin Cover: 4mm-thick (1.6") detachable with semi-free-stOp
hinge 2.5kg (5.5 lbs.)

Insulator: Low "fa. 2-step brake type by means of spring,
rubber and grease; Height adjustable (adjustable

range: 10mm [1/3'])

Lock Indicator: 33-1/3 rpm; Blue, 45 rpm: Orange

Arm Base: Detachable. diecast

Tonearrn Selector Switch: Tonearm-l. Tonearm-2 interchangeable

[OTHERS]
Power Requirement: AC (20/2201240V, 50le2
Power Consumption: 16W
Dimensions: 664(W) x 160(H) x 392(Dlmm
(26-1/4" x 63" x 154")
Weight: Net 22kgs (48.6 lbs); Gross 25.5kgs (56.1 lbs.)

Specifications and appearance design are subject to possible change without notice.

LUX CORPORATION, JAPAN.

1-1, LCHOME, SHINSENRI-NISHIMACHI.TOYONAKA-SHI, OSAKA. PHONE: $834422? CABLE' LUXELECT OSAKA TELEX' J63694

Printed in Japan