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10.
11.
The
POWER
switch
can
be OFF
when
this
poition is set.
Use
this position for normal
SEA
compen-
sation. When
this switch is set to DEFEAT,
press it once again to regain the ON position.
ON (mL):
. ATTENUATOR
switch
-6 dB (-—):
This switch
is used to attenuate
for large
dynamic
ranges
such as live performances
or high-level signals. it is not necessary for
normal use.
|
O dB (8): Maintain this position for normal operation.
. SEA REC switch
ON (-=):
To record SEA-compensated signals.
OFF (§L): To
record
tapes while
bypassing the SEA
circuit. When
this switch is set to ON, press
it again to set it to OFF position.
TAPE MONITOR
switch
ON (-—):
Set to this position when you are listening to
the tape deck
connected
to the SEA-60.
If
your tape deck is of the three-head type, you
can monitor the recorded sound while record-
ing by setting this switch to ON.
Set to this position except when you are listen-
ing to the tape deck connected to the SEA-60.
S.E.A. controls
The SEA-60 Graphic Equalizer divides the audio spectrum
from
31.5 Hz to 16 kHz into 10 frequency bands having
their center frequencies at intervals of one octave starting
from 1kHz in both directions.
When
the knob
is set to '0' (center position), frequency
response is flat. The response can be varied by +12 dB by
raising or lowering the knob.
31.5 Hz:
Lowest
frequency
range
for recorded
sound
on
the disc.
Reproduce
the
very
low bass
sound
by raising
the
knob,
obtaining
that
solid and substantial "'being-there'' feeling.
When
lowered,
it functions as low-cut filter
and eliminates hum and rumble.
Raise to emphasize the very low bass response
of organs, drums, and contrabass. It produces
stable and solid sound by raising the knob and
eliminates the unclear sound response of low
frequencies by lowering the knob.
Raise
the knob
to obtain a more expanded
low sound.
Lower the knob to eliminate un-
clear sound caused by large spaces in listening
rooms.
OFF (@):
63 Hz:
125 Hz:
12.
13.
Lower the knob to reduce the reflected sound
in a live listening room or to eliminate unclear
sound caused in small listening rooms.
This
frequency
range
is the base on
which
music Is constructed. Ratse this knob to really
put a punch in your music.
Most effective in emphasizing or deemphasiz-
ing the human voice. Raise the knob to cause
the vocalist to be brought to the foreground,
or lower for causing it to recede into the back-
ground.
|
This frequency stimulates the human
ear. If
the music sounds
hard or metallic, lower the
knob.
Raise this knob
slightly
so that the tension
of strings can be sensed and a vigorous sound
reproduction
can
be
obtained.
Lower
the
knob to obtain more fatigue-free listening.
Boost
to add
clarity
to winds and
strings.
Moving
this control
varies the tonal expres-
sion, influencing the subtleties of the music.
Boosting
this frequency
range properly adds
to the delicacy of highs, with cymbals and
triangles
resounding
in a more
ear-pieasing
manner,
and provides a feeling of extension.
This control can also be used to compensate
for
cartridge
response
since
most
moving-
magnet cattridges have their resonance peaks
in the frequency
range
from
10 kHz
to 20
kHz.
SPECTRUM ANALYZER
indicator
The input signals are analyzed for their frequencies and
divided
into
10
bands
whose
center
frequencies
are
identical
to
those
of the
10
S.E.A.
controls.
This
SPECTRUM ANALYZER
indicator shows the input signal
level in each
frequency band. For easy viewability, the
indicator
is designed
so that its response time is faster
when rising and slower when decaying.
Function indicator
SEA
CHARACTER:
Indicates whether
the SEA
CHA-
RACTER
switch is positioned to NORMAL
or REVERSE
TAPE
MONITOR:
When
TAPE
MONITOR
switch
is
pressed ON ( -= ), this indicator will light.
SEA
REC:
When SEA
REC switch
is pressed ON ( =
),
this indicator will light.
Note:
When SEA switch is pressed DEFEAT (-—), SEA
CHARACTER
and SEA
REC
indicators will not
light.
250 Hz:
500 Hz:
1 kHz:
2 kHz:
4 kHz:
8 kHz:
16 kHz:
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