Yamaha EQ-500U User manual

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RISK OF ELECTRIC SHOCK] | l
DO NOT OPEN p
~ CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER {OR BACK) NO USER-SERVICEABLE
PARTS INSIDE, REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.
e Explanation of Graphical Symbols
The lightning flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert you to the presence
of uninsulated “dangerous voltage“
within the product's enclosure that
may be of sufficient magnitude to
constitute a risk of electric shock to
persons.
The exclamation point within an
equilateral triangle is intended to alert
you to the presence of important
operating and maintenance (servicing)
instructions in the literature accom-
panying the appliance.
SAFETY INSTRUCTIONS
1 Read Instructions — Allthe safety and operating
instructions should be read before the appliance is
operated.
2 Retain Instructions — The safety and operating
instructions should be retained for future reference.
3 Heed Warnings — All warnings on the appliance -
and in the operating instructions should be adhered
to. €,
4 Follow instructions — All operating and other
instructions should be followed.
5 Water and Moisture — The appliance should not
_ be used near water — for example, near a bathtub,
washbow/l, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.
6 Carts and Stands — The appliance should be
used only with a cart or stand that is recommended
by the manufacturer.
7 Wall or Ceiling Mounting — The appliance should
be mounted to a wall or ceiling only as recommended
by the manufacturer.
8 Ventilation -- The appliance should be situated
so that its location or position does not interfere with
its proper ventilation. For example, the appliance
should not be situated on a bed, sofa, rug, or similar
surface, that may block the ventilation openings; or
cabinet that may impede the flow of air through the
ventilation openings.
9 Heat — The appliance should be situated away
` from heat sources such as radiators, stoves, or other
appliances that produce heat.
10 Power Sources — The appliance should be
connected to a power supply only of the type
described in the operating instructions or as marked
on the appliance.
11 Power-Cord Protection — Power-supply cords
should be routed so that they are not likely to be
walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs,
convenience receptacles, and the point where they
exit from the appliance.
12 Cleaning — The appliance should be cleaned
only as: recommended by the manufacturer.
13 Nonuse Periods — The power cord of the
appliance should be unplugged from the outlet when
left unused for a long period of time.
14 Object and Liquid Entry — Care should be
taken so that objects do not fail into and liquids are
not spilled into the inside of the appliance.
15 Damage Requiring Service — The appliance
should be serviced by qualified service personnel
when:
A. The power-supply cord or the plug has been
damaged; or |
B. Objects have fallen, or liquid has been spilled into
the appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate
normally or exhibits a marked change in
. performance; or
E. The appliance has been dropped, or the cabinet
damaged.

16 > Servicing — The user should not attempt to —
service
the
appliance
beyond
those
means
described
in the operating instructions. All other servicing should
be reterred to qualified service personnel.
17 Grounding or Polarization — The precautions
that should be taken so that the grounding or
polarization of an appliance is not defeated.
CAUTION: READ THIS BEFORE OPERATING
YOUREQ-SO0OU = —
1 |
For optimum operation of this sophisticated stereo
graphic equalizer, read this manual carefully for
proper installation and connecttion.
2 Ze
For best results, the EQ-500U should not be placed in
direct sunlight or near a heat source. Choose a
location free from vibrations and excessive dust, cold,
or moisture, and do not place near sources of hum |
such as transformers or motors.
3 |
If a foreign object falls into set, or if the set must be
opened for any reason, contact your dealer to avoid
risking damage to the unit or shock:
4
Do not apply excessive force to switches and knobs..
5
if the unit must be moved, first pull out the power cord
and disconnect all connection wires.
6 | l
To prevent damage to the EQ-500U'’s finish, do not
clean with chemical solvents. Instead, use a clean,
dry cloth.
7
Read the “troubleshooting” section in this manual for
‚common operating errors if any problems occur. If
they cannot be remedied i in this way: contact your
‚dealer.
8
Check power requirements of audio components
before connecting them to the AC outlet on the back
panel. Ifthey require more power than ne outlet can
provide do not connect them.
9
Keep this manual in a safe place for future reference.

8
When
connecting
your
equipment,
turn
the
power
to
each
unit
off
and
make
sure
that
you
have
correctly
connected
the
Left
(L)
and
Sor
(R)
channels.
Tape
deck
Power
plug
from
other
unit.
Eanes) PR " Unswitched can be supplied
Ge: Oe to other components with a
d ee combined power nn of
up to 400W.
LINEIN] LINE OUT
EQ-500U
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Connect to an AC outlet or to the
amplifier or receiver Auxiliary power
outlet. The power consumption of this
unit is 15W. Check the power rating of the
amplifier or receiver outlet before use.
The accessory jacks are provided
on some of YAMAHA's newest
amplifiers and receivers.
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* For the amplifier or receiver connections, please
refer to the amplifier or receiver owner's manual.
Amplifier or receiver

E CONNECTING AN AMPLIFIER OR
RECEIVER
Check from the connection diagram that you have
made the correct connections. Please note that input
procedures and program source selection may vary
according to the capabilities of the amplifier or
receiver and the connections between it and this unit.
® To connect an integrated amplifier or receiver
using the ACCESSORY jacks:
The ACCESSORY jacks are provided on some 5 of
Yamaha's newest amplifiers and receivers. |
1. Connect the SEND jacks of the ACCESSORY
jacks to the LINE IN of this unit.
2.
Connect
the
RECEIVE
jacks
of
the
ACCESSORY
jacks to the LINE OUT of this unit.
The program source selected with the integrated
amplifier's or receiver's input selector can be
equalized.
WIESE? AMPLIFIER
EE eas ( )
aS ee gr
mjo meS T fy ees
EQ-500U ©
a
®
To
connect
an
integrated
amplifier
or
receiver
without
using
the
ACCESSORY
jacks:
1.
Connect
the
REC
OUT
jacks
of
the
TAPE
jacks
to
the
LINE
IN
of
this
unit.
2.
Connect
the
TAPE
PB
jacks
of
the
TAPE
jacks
to
the
LINE
OUT
of
this
unit.
|
The following operations can be carried out via the
amplifier or receiver:
Program Source Setting
With a REC
OUT selector.
Selected with the | Set the INPUT
REC OUT SELECTOR to
Selector. TAPE.
Selected with the
input selector.
switch. ON.
With a TAPE
MONITOR
Turn the TAPE
MONITOR switch
INTEGRATED AMPLIFIER
EQ-500U
lei]
® To connect a separate amplifier or receiver:
1. Connect the FRE OUT jacks of the control
amplifier to the LINE IN jacks of this unit.
2.
Connect
the
MAIN
IN
jacks
of
the
power
amplifier
to
the
LINE
OUT
jacks
of
this
unit.
|
In this way, you will be able to equalize the program
source selected with the control amplifier input
selector.
| |
The pink noise level cannot be adjusted with the
OUTPUT
control amplifier’s volume control. Adjust the volume
level with the OUTPUT LEVEL control of this unit.
EQ-500U
INPUT
POWER AMPLIFIER
E CONNECTING A TAPE DECK
=- Connect the tape deck to the TAPE jacks. Connect
the PLAY jacks to the tape deck’s LINE OUT terminal,
and the REC jacks to the tape deck's LINE IN jacks.
E
AUXILIARY
POWER
OUTLET
(AC
OUTLET)
This is an unswitched auxiliary outlet which can be
used to supply power to other audio equipment. The
other equipment must have a power consumption
rating less than 400W. Power will be supplied even if
this unit is turned off.
CAUTION: | u
Always be sure to check that the power consumption
of the unit you are connecting is less than 400W.

NATURAL SOUND
GRAPHIC EQUALIZER EQ-500U |
YAMAH
PINK SUSSDNIG
NOISE FILTER
@ FREQUENCY SPECTRUM ANALYZER
This frequency spectrum analyzer divides a 30 Hz —
16 kHz frequency range into 10 bands and displays
the relative signal level of each band. Since the
frequency of each band corresponds to an equalizing |
control frequency, you can check the equalizing effect
directly.
@ Meter select switches
These switches are used to select the SPECTRUM
ANALY ZER display mode.
These buttons allow you to independently select a
spectrum analyzer display of output level on the left
and right channels, respectively. When both buttons
are pressed, the spectrum analyzer displays a
combined output level of both channels.
5
| METER LEVEL
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IT LEFT CHANNEL
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Ss 5 5 5 5 5 5 5 5 5 s 5 5
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* When the PINK NOISE switch is ON, the LEFT and
RIGHT switches can be used to display the pink
noise level.
® METER LEVEL control
This is used to control the level displayed by the
spectrum analyzer. No display will appear when the
knob is at the “0” position. The variable level display it
provides facilitates monitoring a wide range of relative
output levels with ease.
GRAPHIC EQUALIZER
SOH2 GOnz 120Hz S40Hz: ABORZ kHz kHz kHz
POUTPLUT
RIGHT CHANNEL fF ft LEVEL |
+ + + + + i 1 + rÉ
5 5 +5 Ss 5 5 5 5 S 10 10
4 a 4 A 4 a 4 a A 3 9
3 3 3 3 3 3 3 3 3 e 8
2 2 2 2 a 2 2 2 2 7 7
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€ GRAPHIC EQUALIZER controls
Independent level controls for both the left and right
channels are provided for each of the ten frequency
bands. These are sliding type controls, and in the
center position provide no level boost or cut. A £12.
dB range of equalization is available on each
frequency band. Red LED indicators on each control
light when the left EQUALIZER MODE switch is set to
ON, providing visual confirmation of level settings at a
glance. When the left EQUALIZER MODE switch is
set to DEFEAT, these controls will have no effect,
regardless of their settings.

e 30 Hz slide control
Moving this slide control down reduces very low
frequency rumble, or compensates a warped disc.
Moving the slide control "Up emphasizes the very low
frequencies.
e 60 Hz slide control
Moving this slide control down reduces AC line hum
and (reduces) the lower tone. Moving slide control up
emphasizeslow tones such as 3 Pipe organ; drums,
bass, etc.
® 120 Hz slide control
This range supports the lower end ofthe music and
controls overall depth. The slide control may be
moved down to eliminated ' ‘boomy bass” caused by
room acoustics. | ae. Fas
© 240 Hz slide control | |
This is the middle-to-lower tone range, but it has an
effect on the overall sound. Mainly, the richness of the
strings can be controlled. When strings are overly
warm under actual listening conditions, moving the
slide control down may help.
e 480 Hz slide control | |
This range is the foundation of music Aeludine both
instruments and the human voice and it controls the
overall power ofthe sound. As the slide control is
moved up, marange sounds will become more
forward. —
e 1 kHz slide control |
This range affects the presence of the music (depth
of tone), and is especially effective when playing back
vocals. Moving the slide control up and down will
cause the vocals to be more ome front” or more
reserved. aa ae |
è 2 kHz slide control ©
This is the frequency. range where the human ear is
most sensitive. Boosting the level slightly will add
brilliance, crispness, etc. to instruments. Cutting the
level slightly makes for easy listening.
® 4 kHz slide control
The human ear is also highly sensitive in this range.
Mainly effective for increasing/decreasing the
harmonics of the primary tone. Boosting this range a
bit makes strings more intense. Over-intense,
tiresome music becomes easy listening when the
slide control is moved down. |
® 8 kHz slide control
High frequency range. Strings, horns, etc. will be
emphasized and this gives a slight difference in tone
glaze and quality. Moving the slide control down
reduces over-emphasized consonants in vocals and
objectionable tape hiss. Moving the slide control up,
on the other hand, improves the sharpness of such
instruments as cymbals.
© 16 kHz slide control —
Super-high frequency range. This affects high
harmonics rather than the fundamental tones of the
instruments themselves, and.has an effect on the
delicacy and atmosphere of the music. Maving the
slide control up adds a delicate, fresh sound to
cymbals, triangles, etc.
@ OUTPUT LEVEL control
This controls LINE OUTPUT level of this unit.
* REC OUT level cannot be changed. |
@ EQUALIZER MODE switches
Selects the equalization mode.
‘DEFEAT: No equalization — flat response iS-
achieved.
ON: The equalizer control indicators light up and
equalization can be effected.
REC: The signal routed to the Rec Out terminals i iS
equalized.
@ TAPE monitor switch
Used to select a tape deck for tape monitoring.
2-50 OU
@ SUBSONIC FILTER switch |
This switches the subsonic filter on'and off to cut
frequencies in the 15 Hz range as selected by the
SUBSONIC FILTER controls.
© PINK NOISE switch _ |
Pink noise, which is emitted. by a built-in generator, is
a random noise signal which is distributed at an even
level at all frequencies, and when monitored through
‘the supplied microphone, allows you to measure the
acoustic response characteristics of the listening
environment. :
@ MIC jack
This is the input terminal for the microphone to be
used with the spectrum analyzer to measure the
acoustic response characteristics of the listening |
environment.
@ POWER switch
This switch turns the power to this unit ON and OFF.
The switch is pressed once to turn the power on, and
a second time to turn the power off.

E THE MM-110 ELECTRET
CONDENSER MICROPHONE
An electret condenser microphone for use in
measuring the acoustic response characteristics of
the listening environment is provided with this unit.
Microphone input will be displayed on the spectrum
analyzer when the microphone is connected to the
front panel MIC jack, the MIC switch is turned on, and
a signal of level high enough to be measured | is output
through the speakers. |
-* Remove the battery from the ierephong if you do
not expect to be using it for some time.
_. Microphone switch
—Changing the battery |
(T) Remove the cover.
(2) Insert AA “R06”
~ battery, or equiva-
lent making sure
that the positive and
negative poles are
z facing in the right
(3) After the battery has direction.
been changed snap the
lid back on.
If the battery runs down, the sensitivity of the
microphone will decrease. Change the battery as
soon as it starts to run down.
Battery Cautions
lf the battery is replaced incorectly, dangerous
leakage or collosion may result. Be especially careful
of the Tolowiog points:
When replaceing:
@ Insert the battery with correct (4) and (-)
indications correctly into the battery compartment.
Rechargeable batteries:
® There are two types of batteries; rechargeable and
nonrechargeable. Check the cautions label on the —
battery before use. Ä
To avoid accidents:
® Never disassemble, heat or throw a battery into a
fire. When disposing, deal with batteries as
inflammable matter. —
® Do not short the (+) and (~) terminals directly.
When battery leakage occurs:
© Wipe off the liquid in the battery compartment and
replace the battery with new one.
E
THE
SPECTRUM
ANALYZER
.
The spectrum analyzer displays the frequency
dispersion of signals for direct monitoring. Monitor
levels can be adjusted with the METER LEVEL control
for enhanced readability of the level adjustment.
Enhancing Sound Quality
As the equalizer control frequencies are in agreement
with the frequency divisions of the spectrum analyzer,
equalization effects can be verified visually.
Frequency
Bishenion
ers
According
to
the
Program
Source
® Frequency dispersion i in a source with
numerous
low
w
frequency
components
|
30 60 +20 240 sau th an Jr Bk 16k HZ
SPECTRUM ANALYZER
® Frequency ee ina wee with
numerous
middle
frequency
components
_
30 sn 120 240 ABO tk | Bk ak = "3 TEx
SPECTRUM ANALYZER
® Frequency dispersion in a source with
numerous ch an components
30 60 120 240 ART lk Bk Ak, Bk 18k:
SPECTRUM ANALYZER, eee l

This unit provides control of 10 bands for a total range
of 30 Hz to 16 kHz. Thus, the GRAPHIC EQUALIZER
controls can be used to finely adjust each frequency
‚as desired. |
In addition, by using the built- ‘in pink noise generator
and the spectrum analyzer together, the acoustic _
characteristics of the listening room can be measured
and compensated for.
Before operation:
e Refer to the respective owner's manuals on how to
operate the amplifier, receiver, tape deck, and so
on.
® Set the tone controls of the connected amplifiers or
receiver to FLAT or DEFEAT.
a er PLAY BACK OF THE
PROGRAM SOURCE WHICH IS TO
BE EQUALIZED
1. Press the POWER switch.
2. Set the left EQUALIZER MODE switch to ON.
3. Select the program source.
When playing back a program source which is -
connected to the amplifier or receiver, turn the
TAPE monitor switch or this unit to OFF. (For signal
path refer to the right figure.)
(The procedure for selecting a program source
from the amplifier or receiver will differ according
to the amplifier or receiver. Refer to the section on
“Connecting an Amplifier or Receiver.”) When
using a tape deck connected to this unit, set the
TAPE switch to ON.
4. Start playback of the program source, and adjust
the volume with the amplifier s or receiver's
volume control.
5. Operate the GRAPIHC EQUALIZER while listening
. to the.sound in order to obtain the optimum
_ frequency response of the signal.
* Check the effect by alternately pressing the
EQUALIZER MODE switch ON and DEFEAT
positions.
Equalizing red play, etc.
EQUALIZER MODE — ON
TAPE > OFF
—> Unequalized signal
= = Equalized signal
Amplifier or receiver
Y
INPUT
‘OUTPUT
| l
Lili HH
fo cm am Bin = um om um
EQ-500U
Equalizing a playback from tape deck
TAPE — ON. | em Unequalized signal
EQUALIZER MODE — ON
= = = > Equalized signal
Amplifier or receiver
Gn iE m,
OUTPUT
a @ ony oe ot
EQ-500U
E RECORDING AN EQUALIZED
PROGRAM SOURCE
An equalized program source can be recorded on a
tape deck connected to the TAPE REC a of the
this unit.
1. Press the POWER switch.
2. Press the left EQUALIZER MODE switch to ON.
3. Turn the TAPE monitor switch to OFF.
4. Operate the amplifier or receiver and select the
program source to be recorded.
5. Operate the GRAPHIC EQUALIZER controls to
obtain the optimum equalization of the signal.
6. Set the EQUALIZER MODE switch to REC.
* To record without equalization, set the
EQUALIZER MODE switch to OFF.
7. Adjust the recording level on the tape deck and
then begin recording.

EQ-500U
Recording
an
Equalized
Program
Source
EQUALIZER MODE — ON, REC
—- Unequalized signal
TAPE
—
OFF
= — > Equalized signal
Amplifier or receiver
EQ-500U
Tape Monitoring
If
you
are
using
a
3-head
tape
deck,
it
will
be
possible
to
monitor
the
result
of
an
equalized
recording
in
real
time.
Set the
tape
deck’s
monitor
selector
to
Tape,
and
the
TAPE
monitor
switch
of
ns
unit
to
ON.
EQUALIZER MODE — ~ ON, REC
TAPE — ON
=
Unequalized
signal
~-
~
>
Equalized
signal
Amplifier or receiver
TAPE DECK
(3-HEAD TYPE)
EM
MEASURING
AND
ENHANCING
THE
_
CHARACTERISTICS
OF
A
SOUND
_
ENVIRONMENT
|
Every
room
has
its
own,
unique
acoustic
response
characteristics,
and
your
listening
environment
does
influence
the
sound
you
are
hearing.
This
unit
lets
you
boost
or
cut
the
output
level
of
your
music
signal
at
different
points
of
the
frequency
spectrum,
before
it
reaches
your
speakers,
in
anticipation
of
what
the
room
is
going
to
do
it,
so
the
effect
of
room
acoustics
on
the
output
signal
will
be
effectively
negaied:
How
to
Measure
the
Acoustic
Characteristics
of
the Listening Room:
1.
Connect
the
microphone
Supplied
as
an
accessory.
Microphone
placement
is
crucial
to
proper
equalization.
The
microphone
position
©
should
correspond
as
closely
as
possible
to
where
your
ears
will
be
when,
listening.
Height
of
the
microphone
i
is
thus
also
a
factor.
AR:
Speaker
(L)
Speaker
(R)
&
|s®
Microphone
(Place at listening point)
ae rn a
Sie BE:
. PINK NOISE — — ON
Meter selector switch — ON
EQUALIZER MODE — ~ON

2. Set the control knobs to the following positions:
AMP Volume control — Lowest
| Tone contro! — Flat |
EQ-500U OUTPUT LEVEL control — Maximum (10)
EQUALIZER controls — Center (0)
SUBSONIC FILTER switch — OFF
EQUALIZER MODE switch — DEFEAT
Meter select switches — LEFT, RIGHT ON
PINK: NOISE switch — ON
METER LEVEL control — Maximum (10)
TAPE monitor switch = “OFF
Mic | Mic switch =
ON
3. When the volume of the amplifier or receiver is
gradually raised, a buzz will be heard from the
speakers. This is pink noise. Set the volume at an
acceptable listening level. At this point, if the level
indicated by the spectrum analyzer is too high, turn
the METER LEVEL knob down bit by bit, and adjust
until all displayed levels are a little above the
center.
Compensating for deficiencies in the Listening
Environment
1. Set the control knobs and switches to the following
positions:
OUTPUT LEVEL control — Maximum (10)
EQUALIZER conirols — Center (0)
SUBSONIC FILTER switch — OFF
EQUALIZER MODE switch — DEFEAT
Meter select switches — LEFT, RIGHT ON
PINK NOISE switch — ON
TAPE monitor switch — OFF
2. Press the left EQUALIZER MODE switch to ON.
3. Turn the LEFT meter select switch off. (Equalizing
adjustment is carried out channel by channel with
a final overall adjustment.)
. Start playback through the RIGHT channel. The
spectrum analyzer will indicate the response of
that channel.
. Operate the GRAPHIC EQUALIZER controls for
the RIGHT channel, adjusting them until the
spectrum analyzer display is flat.
. Turn the RIGHT meter select switch off and the
LEFT switch on.
Operate the GRAPHIC EQUALIZER controls for
the LEFT channel,-adjusting them until the
spectrum analyzer display is flat.
. Turn the Meter select switches for both channels
on.
. Start playback through both channels
simultaneously, and recheck and readjust the
spectrum analyzer. This completes the overall
sound enhancement procedure. |
Input Sensitivity/impedance = *
LINE IN, TAPE, 1kHz............ 1V/47k-ohms
WIG fates et eee tk abetting: 0.3 mV/47k-ohms
Rated Output/Impedance
LINE OUT, REC OUT, 1kHz |
(OUTPUT LEVEL — — Max.) ....... 1V/600-ohms
Frequency Response . hun ee. 10 HZ — 35 kHz,
| +0.5 dB
Center Frequencies ........ „30 Hz, 60 Hz, 120 Hz,
240 Hz, 480 Hz, 1 KHz, 2 kHz,
4 kHz, 8 kHz, 16 kHz,
Equalizer Control Range ................. +12 dB
Signal-to-Noise Ratio (Input short, IHF A
Network) Eo o
At 1V output ................., More than 105 dB
Total Harmonic Distorlion
(i kHz, 1V output) ............ Less than 0.005%
Maximum Output
(20 Hz — 20 kHz) ................. More than 7V
Subsonic Filter Cutoff
FFEQUENEV ice 15 Hz
| (12 dB/Oct)
Pink Noise Output .................. 150 mV RMS
DISHIBV cs es sich een 10 bands
Switchable between Lor R, L +R
Power Supply .................... AC 120V, 60 Hz
Power Consumption ........................ 15W
Dimensions (W x H x D) ..... 435 x 100 x 232 mm
(17-1/8" x 3-15/16" x 9-1/8")
Weight ee 3.7 kg (8 Ibs. 2 oz.)
Accessories ..................... Pin plug cords (2)
MM-110 Electret Condenser Mic
Mic stand
Dry battery “AA” (R06) type (1)
* Specifications subject to change without notice.
10

Before assuming that your amplifier or receiver is faulty, check by following troubleshooting list which details corrective action which you can take yourself. If the fault persists, or
is not mentioned in the list, turn off and disconnect the unit immediately, and a in touch with your nearest Yamaha dealer.
Power is not supplied even ihrough ® Plug it in securely.
the Power switch is turned on.
@ The power plug is not securely plugged in.
No sound is heard. = @ The TAPE Monitor switch is not set correctly.
| ® Improper connections to INPUT jacks. ® Make sure all connections are properly done.
@ The OUTPUT LEVEL control is set too low. @ Move the OUTPUT LEVEL control.
There is no sound from one speaker. -= @ The pin plug is not properly connected. Ä | @ Check the connections. | |
Sound quality cannot be enhanced. ® The EQUALIZER MODE switch is in the DEFEAT ® Set the switch to ON.
@ Set the switch correctly.
position. | | a
Spectrum analyzer will not light up. : © The METER LEVEL control is set to 0. Ə Slide the METER LEVEL control to the right.
@ The meter select switches are not set properly. Ə Set these switches correctly.
SINCE 1887
NIPPON GAKKI CO, LTD. HAMAMATSU, JAPAN
.vC71330