Reconstruction can cauM accidents.
Absolutely never try to remodel, reconstruct or repair this
unit yourself. Do not attempt to touch any internal parts
because to do so may result in an electric shock or other
accident.
Be sure the power Is off.
After you have finished using this unit, check once more to
be sure that the power is off. it the unit is left with the power
on for a long period of time, it may not only be damaged, thus
shortening its useful life, but may ateo lead to a dangerous
accident.
Features
Oversized turntable that cuts oft and absorbs
external vibrations
Rased on analysis of the turntable vibration modes and
vibrations in the sound range, a special viscoelasttc
material is applied to the reverse surface of the turntable
platter for deadening.
The deadening material Is applied to the undorsurface and
outer periphery of the turntable platter, with the rubber
turntable mat on the surface settled into the turntable
platter. This design is supenor in acoustic characteristics
even at high sound levels through elimination of turntable
resonance and absorption of external vibration.
Moreover, the oversized aluminum die-cast turntable
platter. 33.9 cm (13-11/32") in diameter, ts heavy with a
moment of inertia of 250 kg cm* (85 lb in*) for large heavy
weight 1.85 kg (4 ib) class design.
Vibration damping structure by the precision
aluminum die-cast cabinet and TNRC
The acoustical characteristics of the player system are in-
evitably affected by the turntable platter and cabinet
employed. The SP-25 adopts an aluminum die-cast cabinet
superior in strength, with high processing accuracy.
Through cutting-off and absorption of external vibrations,
the unit is designed for improved acoustic characteristics,
with susceptibility to feedback minimized.
| Specifications
General
Power supply:
Power consumption:
01 mansion a:
(WxHxD)
Weight:
Turntable section-
Typa:
Drive method:
Motor:
Drive control method:
Turntable platter:
-MO-120/220-240 V,
SO or 60 Hz
11 W
34.9x8.5x37.2 cm
(13-3/4*3-1/64x14*41/64
inches)
4.8kg(10.6ib)
Quartz direct drive
Direct Drive
Brushless DC motor
Quartz-phase-locked control
Aluminum die-cast, diameter
33.9 cm (13-11/32 inches)
weight 1.85 kg (4 10)
250kgcm* (85 lb In*)
33-1/3 rpm and 45 rpm
± 6% adjustment range
l.5kgcm(l.31 tb-in)
0.7 s. from standstill
Electrical braking
0% within 1.0 kg cm (at a stylus
pressure of 200 g)
Within ±0.002%
(33-1/3,45 rpm)
0.01% WRMS"
0.025% WRMS (JIS C5521)
±0.035% peak(IEC 98A
Weighted)
'This rating refers to turntable assembly atone, excluding
effects of record, cartridge or tonearm, but including platter.
Measured by obtaining signal from built-in frequency
generator ol motor assembly.
Moment of inertia:
Turntable speeds:
Turntable speed
fine adjustment:
Starting torque:
Build-up timer:
Braking system:
Speed fluctuation
due to load torque:
Speed drift:
Wow and flutter:
Rumble:
- 56 dB (JEC 98A Unweighted)
- 78 d8 (IEC 98A Weighted)
• Quartz Controlled Rotation Accuracy
The SP-25 utilizes the oscillation of a quartz crystal as a
reference signal or source. This oscillation is not affected by
temperature change or power fluctuations. By synchro*
nizing the rotation of the turntable piatter accurately to the
reference signal, speed drift of the unit is held wtthtn
±0.002% (33-1/3 rpm.).
• Technics* unique motor construction in
which the rotor ot the motor is Integrally
formed with the turntable
Weight and dimension shown are approximate.
Specifications subject to change without notice.
• High torque motor ot 1.5 kg cm with starting
time of 0.7 second is capable of instant speed
change-over (at 33-1 / 3 rpm.)
• Stable and positive mechanism that can
stand frequent use for business use, etc. and
a switch section with point contacts
• Electronic brake
