Technics QUARTZ SL-7 - Other Advanced Features

1.
High
performance
direct
drive
unit
the
size
of
a
record
jacket
The
SL-7
consists
of
an
upper
and
lower
cabinet.
The
upper
cabinet
is
made
of
precision
aluminum
diecast
to
assure
a
high
degree
of
accuracy
and
includes
the
linear
tracking
tonearm,
tracking
control
circuitry
and
optical
sensor.
The
lower
cabinet,
made
of
zinc
diecast
to
give
the
unit
suffi-
cient
mass,
holds
Technics’
original
integral
rotor/platter
direct
drive
motor
and
its
control
circuitry.
It’s
hard
to
believe
that
it
all
fits
in
a
unit
the
size
of
a
record
jacket.
_
Just
put
on
a
record
and
press
the
start
button.
Thanks
to
the
optical
sensor
and
microcomputer,
both
record
size
and
record
speed
are
detected
automatically
so
all
you
have
to
do
is
press
the
start
button
to
begin
play.
At
the
end
of
the
record,
the
tonearm
automatically
rises
and
returns
to
the
start
position.
When
there
is
no
record
on
the
turntable,
the
tonearm
does
not
move,
so
there
is
no
danger
of
harming
the
stylus
accidentally.
Dynamic
balanced
linear
tracking
tonearm
employs
optical
sensor
and
groove
deflection
angle
detection
for
extremely
stable
and
accurate
tracking.
The linear tracking tonearm moves across the record surface in
the
same
way
as
the
cutter
head
used
to
make
the
record
in
the
first place. Therefore there is virtually no tracking error or
skating force.
Located
by
the
stylus
is
an
optical
sensor
that
detects
tracking
conditions
by
means
of
groove
deflection
angle.
Based
on
this
information,
tonearm
movement
is
controlled
to
maintain
optimum
tracking
at
all
times.
Because
the
tonearm
is
dynami-
cally
balanced,
the
turntable
can
be
played
horizontally
or
vertically.
_Complete multi-function control capability.
Besides the simple, basic operating procedure described
above, you also have complete selective control over all tone-
arm and turntable functions.
_ Aprecision coreless DC motor is used for tonearm
drive to assure quiet and accurate control.
The
coreless
DC
motor
and
slide
bearing
of
minimum
friction
assure
extremely
precise
tonearm
movement.
A
4-point
pivot
bearing
gimbal
suspension
developed
by
Technics
reduces
friction
and
raises
sensitivity
while
contri-
buting
to smooth
tracing
ability.
MM cartridge with pure boron pipe cantilever and
excellent physical characteristics for faithful
sound reproduction
The SL-7 is equipped with the Technics developed
EPC-100CMK2 cartridge with pure boron pipe cantilever, the
first in the world. Boron greatly reduces the effective mass of the
moving system while the one-point suspension system provides
an accurately defined point of support. Technics original
cartridge technology is employed throughout this cartridge to
give you the rich, realistic sound you've always wanted.
7. Other advanced features:
ae eee
Technics’ original! integral rotor-platter structure combines
motor rotor and platter for more stable performance.
Full cycle detection FG servo with quartz phase locked con-
trol assures unbeatable rotational accuracy.
Dial scale and tonearm LED indicator on outside of upper
cabinet make it easy to check on tonearm position.
Record stabilizer and stroboscope built-in.
45 rpm single-play adaptor is located in turntable platter
for pop-up convenience.
Can be run on either AC or DC (12V) current. DC adaptor
optionally available for car battery use.