Onkyo EQ-540 - Adjustment and Calibration Procedures; Initial Setup and Switch Settings; Meter Sensitivity & Deviation Adjustment; Oscillator Signal & Tone Adjustments

Front panel facilities
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Power
Switch
and
Indicator
(POWER)
attenuator
concurrently
affects
both
the
L
and
R
channels,
but
Press
once
to
turn
power
ON
and
once
again
to
turn
power
does
not
function
while
the
Equalizer
Switch
[4]
is
OFF.
OFF.
When
power
is
turned
OFF,
set
the
Equalizer
Switch
(§]
Level
Controls
and
Indicators
[4] to the OFF position or the Tape monitor switch of the
Each control raises and lowers the response of the frequenc
amplifiers
to
the
SOURCE
position.
P
q
y
range centered at the frequency written above the control.
[2]
Level
Controls
and
Attenuator
Indicator
Switches
Above
the
center
“0”
click
stop
position,
response
is
empha-
(SLIDER
LED)
sized;
below
the
“0”
position.
response
is
attenuated.
The
level
.
Use
these
switches
to
turn
the
left
and
right
level
control
in-
control
frequency
is
also
linked
to
the
oscillator.
dicators
separately
on
and
Coe
the
atenuator
indi-
(10
Oscillator
Channel
Switches
(OSC
CH)
cator
goes
out
only
when
both
switches
are
off.
While
the
SWEEP
or
SPOT
switch
of
the
Input
Selector
[3]
Equalizer
Range
Switch
(EQ
RANGE)
Switches
[6]
is
pressed,
press
these
switches
to
select
the
Use
these
switches
to
set
the
range
of
equalization
to
6dB
or
channel(s)
to
which
the
oscillator
output
is
to
be
added.
Also,
12dB.
the
Level
Control!
Indicator(s)
of
the
channel(s)
to
which
the
(4
Equalizer
Switch
(EQUALIZER)
oscillator
output
is
added
illuminate,
and
the
Peak
Level
Press
to
the
OFF
position
to
turn
off
the
equalization
effect
Meter(s)
operate.
set
by
the
level
controls.
In
the
ON
position,
the
program
source
(i
Peak
Hold
Switch
(PEAK
HOLD)
is
equalized
according
to
the
settings
of
level
controls.
Press
this
switch
to
hald
the
peak
value
being
displayed
at
the
[5]
Warble
Mode
Switch
(WARBLE)
Peak
Level
Meter
[15]
for
approximately
1.5
seconds.
While
the
SWEEP
or
SPOT
switch
of
the
Input
Selector
12
Meter
Level
Control
(METER
LEVEL)
Switches
[6]is
pressed,
press
this
switch
to
add
a
Warble
effect
This
control
adjusts
the
display
level
of
the
Peak
Level
to
the
oscillator
output.
Meter[15]}.
Turn
the
control
fully
right
for
the
maximum
display
(6]
input
Selector
Switches
(INPUT
SELECTOR)
level.
LINE:
Press
to
equalize
the
signal
from
the
amplifier
con-
fk:
Racrophone
Jack
(MIC)
,
nected
to
the
rear
panel
LINE
INPUT
terminals.
onnect
the
accessory
microphone
to
this
jack.
TAPE-1:
Press
to
equalize
the
signal
from
the
tape
deck
[4
Level
Meter
Input
Selectors
(METER
INPUT)
connected to the rear panel TAPE-1 PLAY terminalis.
TAPE-2: Press to equalize the signal from the tape deck
connected to the rear panel TAPE-2 PLAY terminals.
SWEEP: Press to sweep the spot oscillator frequency from
32Hz to 16kHz. When the frequency reaches 16kHz,
SOURCE:
Displays
the
output
signals
of
the
equalizer
at
the
Peak
Level
Meter
MIC: Displays the volume of the sound received over
the microphone at the Peak Level Meter ;
the
frequency
will
automatically
switch
back
to
32Hz
3
Fluorescent
Display
(FREQUENCY,
PEAK
LEVEL.
etc)
and
continue
to
sweep
as
before.
This
displays
the
oscillating
frequency
of
the
oscillator,
the
SPOT:
When
this
switch
is
depressed,
a
spot
frequency
is
peak
level
values,
and
the
mode
setting
of
each
switch.
generated.
The
oscillator
frequency
is
shown
by
the
fluorescent
frequency
display[15]
and
the
level
control
indicators
[9].
Spot Frequency Shift Switch (SHIFT)
When the Spot Switch [6]is pressed, first, a test signal of 32Hz
is generated. Then, each time this switch is pressed, the fre-
quency moves up one step. In this mode, the frequency goes
in steps from 32Hz to 16kHz and then back to 32Hz.
Attenuator and Indicator (ATTENUATOR)
Use this control to adjust gain to any point between 0 and
-20dB.
Gain
is
1
when
the
attenuater
controlis
atthetoon
eee