Fisher EQ-274 - Controls on the Front Panel

Controls
on
the
Front
Panel
(Fig.
3)
7. Graphic Equalizer Controls and Indicators
For each the left and right channel of the.10 slide poten-
1.
Operation
Switch
(ON)
i
enables
a
particular
small-area
of
the
This
switch
is
set
to
ON
when
depressed,
the
OPERA-
sea
oe
je
arectveld
boosted
oF
cut
(up
agile
TION
indicator
will
light
and
the
power
is
sas
When
dB).
This
results
in
a
power
increase
by
approximately
the
switch
is
released,
the
power
is
switched
off.
16
times
or
a
power
decrease
of
1/16...
-
CAUTION:
The
graphic
equalizer
indicators
will
light
when
the
EQ.
The
operation
switch
of
this
unit
is
connected
in
the
ON/OFF
or
the
EQ.
REC/OFF
switch
is
depressed.
secondary
circuit
and
does
not
disconnect
the
ee
foo)
CAUTION:
When
the
slide
potentiometer
for
the
higher
AC
power
even
if
the
switch
is
ea
position,
as
long
as
frequency
range
is
in
maximum
position.
(+12
dB),
care
the
AC
cord
is
connected
to
the
AC
line.
should
be
taken
when
‘using
the
tone
controls
on
the
.
Hi-Fi
amplifier
(BASS,
TREBLE).
The
effect
of
the
tone
2.
OPERATION
Indicator
controls
can
increase
to
such
an
extent
as
to
cause
Lights
when
the
Operation
switch
is
depressed.
damage
to
the
power
transistors
(high
frequency
.
oscillation)
and
loudspeakers
(thermal
overloading
of
the
3,
EQ.
ON/OFF
Switch
ee
e
é
tweeter,
mechanical
overloading
of
woofer).
Depress
this
switch
to
to
bring
the
graphic
equalizer
;
a
;
.
ceatrele
into
operation.
The
EQUALIZER
indicator
and
In
the
middie
position
of
the
slide
potentiometer,
the
the
graphic
equalizer
indicators
will
light.
‘
reproduction
is
“linear,”
i.e.
the
influence
of
the
Equalizer
In
the
OFF
position,
the
graphic
equalizer
controls
are
is
negligible
or
non-existant.
ineffective
(irrespective
of
which
position
it
happens
to
:
be
in).
The
tone
signal
traverses
the
equalizer
TAPE
MONITOR
Switch
—
;
;
unaffected.
Reproduction
of
tape
recording
with
connection
method
4.
EQUALIZER
Indicator
Acs
When
this
switch
is
depressed,
the
tape
recording
can
Lights
when
the
EQ.
ON/OFF
switch
is
set
to
ON.
be
monitored.
(Tape
recorders
and
cassette
recorders
FES
with
separate
recording
and
playback
heads
only.)
5.
EQ.REC/O
witch
;
Pprer
(only
effective
if
the
Equalizer:is
operated
by
connection
dias
ae
vuenoat
aes
to
TAPE,
the
TAPE
MONI-
method
2,
see
“technical
description”)
NSIC
ON
a
Tape
recordings
with
frequency
response
influenced
by
NOTE:
the
equalizer.
‘
With
the
TAPE
MONITOR
switch
depressed
to
listen
to
a
When
this
switch
is
depressed
to
REC,
the
EQ.
REC
in-
tape
from
a
tape
recorder
that
is
connected
to
the
dicator
and
the
graphic
equalizer
indicators
will
light.
Equalizer,
if
the
EQ.
REC/OFF
switch
is
depressed
to
REC,
the
graphic
equalizer
indicators
and the
EQ..REC
6.
EQ.
REC
Indicator
indicator
will
light,
but
the
sound
is
heard
without
Slide Control
Lights
when
the
EQ.
REC/OFF
switch
is
set
to
REC.
Boost (up to +12 dB)
To enhance deep bass tones and compen-
32 and 63 Hz
sate acoustic deficiencies.
equalization.
TAPE MONITOR Indicator
Lights when the TAPE MONITOR switch is depressed.
Cut (up to —12 dB)
Suppression of low pitched-frequency distur-
bancés (rumbles, acoustical feedback).
Brightens up a dull sound impression and counter-
acts a muffled sound.
Adds “warmth” to music, punch to percus-
sion instruments and makes weak voices
125 and 250 Hz
and bad recordings richer.
500
Hz
Enhances
wind
brass
instruments.
Makes
harsh
sounds
more
pleasant.
1
kHz
Vocals
are
enhanced.
Corrects
nasal
sounds
and
moves’
sound
farther
away
from
listener
in
the
acoustic
image:
:
2and
4
kHz
Adds
“bite”
to
horns
lead
guitars
etc.
Reduces
“screechiness.”
Corrects
schrill
vocals.
Increases
clarity
and
intelligibility.
Adds
impact
to
percussion.
Allows louder listening levels without discomfort.
8
kHz
Brings
out
overtones
of
grand
piano,
organ
Reduces
excessive
brightness
of
instrumental
;
and
violin.
sounds.
Increases
realism
by
bringing
out
extremely
Helps
salvage
noisy
recordings.
:
16
kHz
2
high
instrumental
overtones.
Corrects
overbright
instrumental
Sounds
and
Corrects
frequency
résponse
of
many
“peaked”
high
end
of
some
phono
Cartridges:
;
loudspeakers:
=~»
=
7:
De-emphasizes
vocal
sibilance.
: