Yamaha Q2031A Q2031A Owners Manual Image - Page 4

Precautions, Front, Panel

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PRECAUTIONS • LOCATION Do not install the Q2031A in location where it might be subjected to the following; o Direct sunlight or excessive heat o Extreme cold o High humidity or dust o Strong vibrations • HANDLING Do not apply undue force to the switches or controls. • POWER CORD Pull the power cord from the wall outlet by the plug only. Never pull on the cord as this may lead to breaking or shorting. • CONNECTIONS Turn off all equipment power switches before making any connections. Before moving the Q2031A, disconnect cords to other equipment to avoid damaging connectors and cables. • CABINET CLEANING AND CARE Wipe the Q2031A cabinet clean with a soft, dry cloth. Do not clean it with benzene or other solvents and avoid spraying insecticides near it. • LIGHTNING If your area is prone to lightning strikes, unplug the Q2031A power cord during storms to prevent lightning induced transients on the power lines from damaging the equipment. FRONT PANEL 00 0 o YAMAHA GRAPHIC EQUALIZE MODEL O203IA O POWER ALON/10 F ANGE O HPF O EO O O 0 .5 40 50 8.3 BO 00 I 60 &.10 800 26k CH A CH B POWER switch When this switch is pressed to turn power on, the POWER indicator LED will light. Pressing the switch again turns the power off. 0 RANGE switches The RANGE switches select the filter boost or cut range for the respective channels. When the switches are off, the normal range of +/-12 dB is selected; when on, the +/-6 dB range is selected. This latter range is useful for very accurate equalization. When the Range switch is on, the LED indicator to its left lights to show that the +/-6 dB range is in effect. 0HPF (High Pass Filter) switches Each channel has an independent HPF switch to switch the HPF in or out of the audio path before the graphic equalizer section. With the HPF switch off, the input signal goes directly to the equalizer, bypassing the HPF. When the HPF switch is on, the HPF is switched into the audio path and provides 12 dB per octave rolloff below the frequency set by the HPF frequency control 0 . LED indicators associated with each switch light when the switch is on to show that the HPF is being used. 3

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PRECAUTIONS
•
LOCATION
Do
not
install
the
Q2031A
in
location
where
it
might
be
subjected
to
the
following;
o
Direct
sunlight
or
excessive
heat
o
Extreme
cold
o
High
humidity
or
dust
o
Strong
vibrations
•
HANDLING
Do
not
apply
undue
force
to
the
switches
or
controls.
•
POWER
CORD
Pull
the
power
cord
from
the
wall
outlet
by
the
plug
only.
Never
pull
on
the
cord
as
this
may
lead
to
breaking
or
shorting.
FRONT
PANEL
•
CONNECTIONS
Turn
off
all
equipment
power
switches
before
making
any
connections.
Before
moving
the
Q2031A,
disconnect
cords
to
other
equipment
to
avoid
damaging
connectors
and
cables.
•
CABINET
CLEANING
AND
CARE
Wipe
the
Q2031
A
cabinet
clean
with
a
soft,
dry
cloth.
Do
not
clean
it
with
benzene
or
other
solvents
and
avoid
spraying
insecticides
near
it.
•
LIGHTNING
If
your
area
is
prone
to
lightning
strikes,
unplug
the
Q2031A
power
cord
during
storms
to
prevent
lightning
induced
transients
on
the
power
lines
from
damaging
the
equipment.
0
0
0
o
YAMAHA
GRAPHIC
EQUALIZE
MODEL
O203IA
O
POWER
ALON/10
F
ANGE
O
O
O
HPF
EO
.5
40
50
8.3
BO
00
I
60
&.10
800
26k
CH
A
CH
B
O
0
POWER
switch
When
this
switch
is
pressed
to
turn
power
on,
the
POWER
indicator
LED
will
light.
Pressing
the
switch
again
turns
the
power
off.
0
RANGE
switches
The
RANGE
switches
select
the
filter
boost
or
cut
range
for
the
respective
channels.
When
the
switches
are
off,
the
normal
range
of
+/-12
dB
is
selected;
when
on,
the
+/-6
dB
range
is
selected.
This
latter
range
is
useful
for
very
accurate
equalization.
When
the
Range
switch
is
on,
the
LED
indicator
to
its
left
lights
to
show
that
the
+/-6
dB
range
is
in
effect.
0HPF
(High
Pass
Filter)
switches
Each
channel
has
an
independent
HPF
switch
to
switch
the
HPF
in
or
out
of
the
audio
path
before
the
graphic
equal-
izer
section.
With
the
HPF
switch
off,
the
input
signal
goes
directly
to
the
equalizer,
bypassing
the
HPF.
When
the
HPF
switch
is
on,
the
HPF
is
switched
into
the
audio
path
and
provides
12
dB
per
octave
rolloff
below
the
frequency
set
by
the
HPF
frequency
control
0
.
LED
in-
dicators
associated
with
each
switch
light
when
the
switch
is
on
to
show
that
the
HPF
is
being
used.
3