Yamaha A-1020 Owner's manual

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DO NOT OPEN
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
persons,
panying the appliance.
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
The exciamation point within an |
equilateral triangle is intended to alert
you to the presence of important
operating and maintenance (servicing)
instructions in the literature accom-
SAFETY INSTRUCTIONS
1 Read Instructions — All the safety and operating
instructions should be read before the appliance is operated.
= Retain Instructions — The safety and operating instruc-
tions 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 instruc-
tions should be followed.
- 5 Water and Moisture - — The appliance should not be used
near water — for example, near a bathtub, washbowl, kitchen
sink, laundry tub, in a wet basement, or near a swimming
pool, etc.
5 Carts and Stands — The appliance should be used only
with a cart or stand that is recommended by the manufac-
turer.
/ Wall or Ceilling Mounting — The appliance should be
mounted to a wail or ceilling only as recommended by the
manufacturer.
= 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 placed in a built-in installation,
such as a bookcase or cabinet that may impede the flow of
air through the ventilation openings.
3 Heat — The appliance should be situated away from
heat sources such as radiators, stoves, or other appliances that
produce heat.
“I O Power Sources — The appliance should be connect—
ed to a power suppiy only of the type described in the
operating instructions or as marked on the appliance.
| 7 1 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
receptacies, and the point where they exit from the
appliance.
1 = Cleaning — The appliance should be cleaned only
as recommended by the manufacturer.
1 3 Nonuse Periods — The power cord of the appliance
should be unplugged from the outlet when left unused for a
long period of time.
7 A Object and Liquid Entry — Care should be taken
so that objects do not fall into and liquids not spilled into
the inside of the appliance.
7 — 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 faiten, 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 damag-
ed.
1 6 Servicing — The user should nat attempt to service
the appliance beyond those means described in the operat-
ing instructions. All other servicing should be referred to
qualified service personnel.
1
The A-720 is a sophisticated integrated stereo amplifier.
To ensure proper operating for the best possible opera-
tion, please read this manual carefully,
=
Choose the installation of your A-720 carefully. Avoid
placing it in direct sunlight or close to a source of heat.
“Also avoid locations subject to vibration and excessive
dust, heat, cold or moisture. Keep away from such
sources of hum as transformers or motors.
Do not open the cabinet as this might result in damage to
the set or electrical shock, If a foreign object should get
into the set, contact your dealer,
4
Do not place records or other objects on top of the ampli-
fier so that the ventilation holes are blocked. This will
cause the internal temperature to rise and may result ina.
failure, о |
2
When removing the power plug from the wall outlet,
always pull directly on the plug; never yank the cord.
5
Do not use force when using the switches and knobs. |
When moving the set be sure to first pull out the power
plug and remove cords connecting to other equipment.
Always set the volume controls ta * 9” while lowering
the tonearm to play a record, then turn the volume up
after the stylus is seated in the record groove.
Do not attempt to clean the A-720 with chemical
solvents as this might damage the finish. Use a clean, dry
cloth. | |
Be sure to read the ‘troubleshooting’ section for advice
on common operating errors before concluding that your
A-720 is faulty.
171
Keep this manual in a safe place for future reference.
Do not connect audio equipment to the AC outlets on the
rear panel if that equipment requires more power than the
outlets are rated to provide,
L Speaker B KR
* Before making any connections, turn off ali equipment, Be sure to connect the -
left (L) and right (R) channels consistently from component to component.
Speaker CR
Other component
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Switched power can be sup-
plied to other components
with a combined power
- consumption of up to 100W.
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Tape deck 1
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(with MM/MC cartridge) (with MM cartridge)
A-1020
rear panel
o
Unswitched power can be
supplied to other compo-
nents with a power consum-
ption of up to 200W.
Connect to an AC power outlet,
a BEFORE MAKING CONNECTIONS
1. Position all cords as far apart from each other
as possible when making connections to avoid
undesirable interactions between them,
2. Make sure that the system is installed in a [oca-
tion where ventilation is not blocked,
3. Refer to the connection diagram for proper
connections,
® CONNECTING THE SPEAKERS
The matching impedance of this amplifier is 612.
Speakers connected to A will be in parallel with speakers
connected to B and/or C. Speakers connected to B and C
will be in series with each other. SE
A maximum of three sets of speakers can be con nected to
the A-1020, You have a choice of four options:
(1) to connect one pair of speakers to terminals A,B, orC,
(2) to connect two pairs of speakers in parallel {one pair
at A and another at either Bor C).
(3) to connect two pairs of speakers in series (one pair at
B and another at C).
{4} to connect three pairs of speakers at A, B and C.
In making any chosen hookup, observe the speaker load
impedances: |
(1) One speaker pair— o
A or Bor C: 4 ohms minimum per speaker
(2) Two speaker pairs in parallel—
A + B or À + C: 8 ohms minimum per speaker
(3) Two speaker pairs in series—
В + С: 2 ohms minimum per speaker
(4) Three speaker pairs—
A + B + C: 8 ohms minimum for A
4 ohms minimum for B and C
Use of any speaker with lower impadance than the above
is not recommended.
* When using either the B or с Speaker terminals in-
dependently of the other, it is necessary that the
terminals not being used are turned OFF with the
front panel speaker selector switch. If they are left ON,
no sound will be heard.
Connect the cords going to the left speakers to the L
terminals and the right speaker cords to the R terminals,
making sure that the “+” and “—” marking are observed.
If the “+” and “—” wires are reversed at either speaker,
the sound wiil be unnatural and wiil lack bass, Speaker
cords should be cut as short as possible; do not coil up
excess wire on the floor, Also, do not bundle with cords
from other system components,
Strip about Tem insulation from the ends of the speaker
cords. Loosen the speaker terminal knobs, insert the
exposed wire of the speaker cord into the hole and then
tighten up the speaker terminal knobs.
RED for (+) sign.
BLACK for (—) sign.
Loosen the speaker terminal
knobs, insert the speaker cord
and then tighten up the speaker
terminal knobs.
Fig, 1
® CONNECTING THE TURNTABLE
Either an MM cartridge or an MC cartridge may be Used
with the Phono 1 jacks, Set the front panel Phono
Selector switch to correspond to the type of cartridge
used.
Only an MM cartridge should be used with the Phono 2
jacks, The cartridge load impedance may be selected for
MM cartridges.
Plug your turntable into the appropriate jacks and
connect the turntables ground wire to the Gnd terminal.
Normally, connecting the ground wire results in minimum
hum, but in some cases better results are obtained with
the ground wire disconnected. The cartridge and the turn-
table's output cords should be positioned well away from
sources of hum as power cords or power transformers of
other system components,
Turntable 1
Both MM and MC cartridge
are usable (cartridge load
selectable).
Turntable 2 ;
For MM cartridge only
(cartridge load selectable).
Fig, 2
e CONNECTING A TUNER
Connect cords from the tuner's output jacks to the Tuner
jacks of the amplifier. As the amplifier's power suppiy
may generate a certain amount of radio frequency noise,
position the tuner so that its AM antenna is well away
from the amplifier,
® CONNECTING TO THE CD AND AUX JACKS
The CD and AUX terminals can be used for connecting
additional equipment such as a compact disc player, a
second tuner, etc. Note that a turntable cannot be
connected to the CD jacks as there is no RIAA equaliza-
tion. :
® CONNECTING A TAPE DECK
Connect the tape deck’s Line in jacks to the amplifier's
Tape 1 Rec Out jacks, verifying that left and right are not
reversed, Then, connect the deck’s Line Qut jacks to the
amplifier's Tape 1 Tape PB jacks,
A second deck may be connected to the Tape 2 jacks if
desired,
TAFE |
TAPE Pa
TAPE >
EEC MT
Tape deck
ces =) [ERAS = =
AS q
e ACQUTLETS
For your convenience, the A-1020 provides 3 AC outlets
(2 switched and 1 unswitched) on the rear panel. Be sure
not to connect appliances to totaling more than 200
watts to the 2 switched outlets or more than 200 watts to
the unswitched outlet,
® ACCESSORY JACKS
For extra system flexibility, this amplifier allows you to
connect a signal processing system such as an equalizer in
the signal path prior te the tone control. Connect the —
Accessory Send terminals to the inputs of the equalizer
and the outputs of the equalizer to the Accessory Receive
terminals. |
- When using the accessory
Jack, pull out the jumper
the jumper bar in.
y
SIH] в = ==
—
Graphic equalizer, etc.
bar, When not using leave
Pull the jumper bar
to remove .
Fig. 4
SOUS STEREO AMPLIMER A-1020
— PHONEE ds ее T L LOUONVESS BALANCE
L = EvEL E
@ POWER SWITCH
This is a “push-on, push-off” type POWER switch. When
- POWER is pushed on, the ¡indicator lamp corresponding
to the selected input source will light.
* Before pushing power on, set the volume to jis lowest
(extreme counter-ciockwise) position to prevent any
loud power-on noise from occurring.
* No sound will be heard from the speakers for several
seconds after power is pushed on because the speaker
protection circuit is activated.
@ SPEAKER SELECTION SWITCHES
The chart shows the effects of the A, B, and C speaker
switches on all the possible speaker configurations of the
A-1020,
When listening to headphones only, turn both A, Band C
off.
* A
Cistorcion Auki E Aut Class A
When using either the B or C Speaker terminals in-
dependently of the other, it is necessary that the
terminals not being used are turned OFF with the
front panel speaker selector switch. If they are left ON,
no sound will be heard. |
SPEAKER SWITCH SETTING CHART
A SWITCH B SWITCH C SWITCH
A only ON OFF OFF
B only OFF ON OFF
C only OFF OFF ON
A+B ON ON OFF
A+C ON OFF ON
B+C OFF ON ON
A+B+C ON ON ON
® AUTO CLASS A (OPERATION SWITCH)
Auto Class A power provides superior distortion-free Class
À amplification at low output levels—which account for
the majority of all listening situations. When higher
output levels are produced, automatically shifts to Class
AB amplification for optimum performance at all power
levels.
When the switch is in the OFF position, this unit operates
as CLASS AB, however, when the switch is in the ON
position {left indicator lights up) the operation auto-
matically switches between CLASS A AND CLASS AB.
AUTO
FF] CLASS A
OFF
Fig. 5
*
During CLASS A operation there is a greater than
normal flow of idling current than for CLASS AB opera-
tion even when there are no signals, and because of that
the together with temperature increases in the set, careful
consideration should be given to provide ventilation to
release this heat during operation,
O TONE BYPASS SWITCH
Pressing this switch lights the right indicator and shortens
the signal path so that only the DC flat and DC power
amplifier (and the phono equalizer on Phono) are in use.
This ensures that the effect on your music of the ampli-
fier circuitry and switch contacts wil! be minimal, but
has the drawback that none of the following controls are
active:
e Bass and Treble Controls
When none of these controls are being used it is desirable
to turn on the Tone Bypass switch from the point of view
of music reproduction accuracy, but remember to turn it
off again before adjusting these. Note that the Tone
Bypass switch can also be used as a convenient way of
disabling all the tone controls at once to check their total
effect on the sound.
O INPUT SELECTOR SWITCH
Selects the program source to be listened to.
© MUTING SWITCH
Pressing this switch lights the left indicator and lowers
the volume level by 20dB, Pressing the switch again extin-
guishes the indicator and restores normal volume. This
switch is very convenient for lowering the volume
temporarily (for instance, to answer a phono call) without
disturbing the original volume setting. Also, when listen-
ing at low volume levels, turning on Muting makes jt
easier to control fine gradations of volume.
* Turning the Muting switch off when the volume is
turned up could result in a very loud volume that
could damage your speakers,
@ VOLUME CONTROL
Used to adjust overali sound volume.
OQ PHONES JACK
Used for plugging in headphones. When it is desired to
listen to headphones only, Speaker switches A, Band C
should all be set to the OFF { JB ) position.
© BASS AND TREBLE CONTROLS
The bass control provides turnover frequencies of 125 Hz
and 500 Hz, Turning the Bass control with turnover set to
500 Hz will create a bold change in bass response; with
the turnover set to 125 Hz the effect will be must less ap-
parent, Flat bass response is produced at the center
“DEFEAT” position. The treble control provides
turnover frequencies of 2.5 kHz and 8 kHz, Turning the
Treble control with turnover set to 2.5 kHz will cause a
pronounced change in treble response; with the turnover
set to 8 kHz the effect wiil be more delicate, Flat treble
response is produced at the center "DEFEAT" position,
{) LOUDNESS CONTROL |
Boosts the extreme low and high frequencies to compen-
sate for our ear's reduced sensitivity to these frequencies
at low volume, Set it to the Flat position while the
Volume control is set to your normal listening level, Turn-
ing it counter-clockwise will reduce the volume while
retaining the natural balance of the low and high fre-
quencies.
When listening with
A a с
== жк ое headphones only,
na = =, Ce] turn all Speaker
switches off,
Confirm L and R when putting
on the headphones.
Fig. 6
LOUDNESS
Set Loudness to the Fiat
position and increase the
Volume to loudest level
desired. |
LOUDNESS
Turn Loudness control
knob counterclockwise
to reduce the volume,
Fig, 7
® BALANCE CONTROL
This control lets you adjust the relative volume of the left
and right speakers, enabling you to compensate for un-
balance caused by installation locations of the speakers
and furniture arrangement.
® FILTER SWITCHES
e SUBSONIC FILTER
This switch lets you cut out ultra-low-frequency signals
caused by turntable rumble or warped records without
affecting the quality of audible sounds. These subsonic
interference signals can sap vital power from the amplifier
or even harm speakers if not attenuated.
FILTER
SHUBSONIG gus
JA
SH =. он
О 0
Prevents cone in stability
(a cause of distortion),
When playing discs, turn on the
15 Hz Subsonic filter to protect
speakers.
Fig. 8
e HIGH FILTER
Pressing this switch activates the high filter to remove
high-frequency noise above 10 kHz such as record surface
noise or tape hiss. There is almost no effect on the desired
signal, but it is better to keep the switch off when not in
USE.
$ MODE SWITCH
Allows switching between stereo and mono operation.
Normally the switch should be set for stereo.
@ REC CUT SELECTOR a e Tape Dubbing | 2. A third position on the Phono 1 input terminal is for
Used for recording, this switch sends the signal from the Dubbing from the deck connected to the rear panel Tape exclusive use with MM cartridges, and the load impe-
selected source to the Rec Out jacks {regardless of the 1 connectors to the deck connected to the Tape 2 con- dance is fixed at 47 k-ohms/220 pF.
position of the Input Selector switch). Set the Input nectors. |
Selector to the same source if you wish to monitor the 1. Set the Rec Out selector to the Tape Copy 1 » 2
source as you record, or to any other source to listen to position, О, | SHONO
that source while recording. If your tape deck has three- — 2. Set deck 1 to Play and deck 2 to Record. | EMM, о!
head monitoring capability, you can monitor the signal To dub from deck 2 to deck 1, set the Rec Out selector to When the Phono 1 terminal GN nd
just recorded on the tape by setting the Input Selector the Tape Copy 2 1 position, set deck 2 to Play and 1 NI TA MM Ces e
switch to Tape. to Record. ’ Y 10094
e independent Recording and Listening Examples
Rec Out | Input Action REC OUT o 12
selector | selector * Switching the Phono selector to the MC position
| Listening to a record with the Example of dubbing when ап ММ cartridge is connected to the Phono 1
Tuner Phono | speakers while recording an AM from tape deck 1 to NON input terminals will cause a sudden variation in
or FM broadcast. tape deck 2, | output volume and will have a harmful effect on
Listen to an FM broadcast your speakers.
Tuner Tuner with the speakers while recording Ш * Output voltage may vary with different cartridges
It | - | according to the manufacturer, so please read the
Phono Phono Listen to a record with the Fig. 10 cartridge owner's manual carefully.
speakers while recording it. | 3. There are two Phono 2/MM positions for different
Listen to an FM or AM broadcast ® PHONO SELECTOR Ш cartridge load impedances—47 k-ohms (220/330pF)
Phono Tuner with the speakers while recording Select the appropriate Phono 1 or Phono 2 position, and and 100 ohm rated impedance of the cartridge you
a record. | | the appropriate MC or MM cartridge position according to are using. Switching between the three positions with
the turntable and cartridge connected to each of the rear the same cartridge will vary frequency response, With
panel Phono 1 and 2 input terminals. When selecting high output MC cartridges, select the 2/MM “100
Q mes Dee: O ax Dour D co Drm | Phono 1 also select the proper cartridge {oad impedance, ohm” position. |
| | | | | В | | | 1. There are two Phono 1/MC position on the Phono
= a = = = = > selector for different cartridge load impedances, When
using a low output moving coil cartridge, select the 0 ONO a
REC QUT load impedance nearest that of the rated impedance of The Phono 2 terminal | o. o |
aux TUNER your cartridge, is only for MM (M1; 1M) 000 A
De. PHONO cartridges.
y Example of recording FM or When the Phono 1
AM broadcast while listening terminal is con-
“to disc | (nat | PHONO Ш
° o nected to: aM, TA a high-output
Fig. 9 | E: BEOpF 4742 /P20pF MC cartridge — Fig, 13
* a low-output
MC cartridge g HINGED PANEL
Because the switches and controls which are not fre-
quently operated are centralized, closing the hinged panel
allows for an uncluttered pane! face, To open, push the
panel section lightly.
Fig. 11
PHONO i
(MM /MC) “
]
PHONO 2 |
(MM) |
|
|
|
|
PHONO |
SELECTOR L
co O
TUNER CF
AUX ©
—
TAPE
— 20
ACCESSORY
INPUT
SELECTOR
REC OUT
SELECTOR
Y
Y
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=:
SEND (Y
RECEIVE US
Y
HIGH CUT
FILTER
|
|
fc=10kHz
1i2dB/oct
Rech
+8
Auto Class-A Power Amp with ZDR.
OPERATION
+18у <——
Е <——
EV + —
-B<—
POWER
SUPPLY
SUBSONIC ° | of
UBSONI | |, |_ SPEAKER A
(ce Г
MODE BALANCE LOUDNESS VOLUME RELAY ГО |+
s | +4 MAIN ov | SPEAKER B
. | с E O1
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Tesi Q TONE BYPASS SO
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| 5 SPEAKER C
| —o | —-
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4j 18495 257500 | в =
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| (
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Ш TREBLE 24/04
TONE CONTROL |
| |
|
®---—@® | LED DRIVER =»: PROTECTION |
нет Reh<——m—o— Al HEADPHONE
POWER SW.
+ Ba
SWITCHED UNSWITCHED
E AC OUTLET
4 А
Power is not supplied even though the Power switch
is turned on.
The power plug is no
Before assuming that your amplifier is faulty, check the following troubleshooting list which details the corrective
action you can take yourself without having to call a service engineer. If you have any doubts or questions, get in touch
with your nearest Yamaha dealer.
EE
t secureiy plugged in.
Plug it in securely.
A fuse is blown,
Consult a service engineer,
There is no sound with any Input selector button
pressed,
The Speakers switch is not set correctly.
Set the Speakers switch correctly.
The input cords are not connected securely.
Connect them securely.
The speaker system is not connected correctly.
Check and secure connections:
There is no sound from one speaker.
The speaker connections are not secure,
Secure the connections.
The Balance control is set all the way to the left or right.
Adjust the Balance control correctly.
There is a lack of bass and no ambience,
The + and — cords have been reversed at the amp or the
speakers,
Connect the speaker wires in the correct phase (+ and —).
There is humming sound when playing records.
The input cords are not connected securely.
Plug the input cords in securely,
The turntabie's ground wire is not connected.
Connect the ground wire.
Sound from MC cartridge is low.
The output of the MC cartridge is connected to the Phono 2
terminal, |
Connect it to the Phono 1 terminal.
The Phono Selector switch js set to MM,
Set the Phono Selector switch to MC,
There is a howling sound when playing records
at high volume.
The turntable and the speakers are too close together or the
turntable is not mounted on a firm surface.
Change the location of the turntable or the speakers.
Interference from private commercial broadcasting.
A transmitter is located nearby.
Consult a service engineer.
Consult with the company that is transmitting.
Turning the Bass or Treble knob does not affect
the tone,
The Tone Bypass switch is on.
The Tone Bypass switch must be turned off to use the tone
controls,
Volume is too low even when the Volume control
is turned up.
The Muting switch is on.
Turn the Muting switch off.
The sound suddenly goes off.
Driving speakers outside the rated impedance range at high
power for an extended period has activated the speaker
protection circuit,
There is a malfunction in the amplifier.
Turning the A-1020 off and then on will reset the speaker
protection circuit. Use speakers inside the rated impedance
range.
Consult your Yamaha dealer.
10
Continuous Power Per Channel
20Hz ~ 20kHz (0.005% THD 8Q) . . . .. . .. 125W
В | | | (Class A BW)
(0.007% THD 68) . . . ... . . 145W
1 kHz (0.005% THD 8) . ............ 130W
(0.005% THD 69) .. 1212112010 150W
Power Band Width
0.03% THD 62.5W (82)... ..... Ш
Damping Factor
1kH280 1120044 44 1 4 4 4 La 111 111114 45
Input Sensitivity/Impedance
Phono 1 MC .......... . 1604V/10k2, 10092
MM. .o.r......25MNV/47kQ2 220pF
Phono2 MM....... 1... 2.5mV/47k2 220pF
47k 2 330pF
| 1002
Input Sensitivity (New IHF) | |
Phono MC....... . . 0 ana aa ea 154 V
1 ee. 0.23mV
Aux, Tape, Tuner, COD . . . .......... 13.4mV
Maximum Input Signal
1 kHz, 0,01% THD Phono MC . , , .... .. 10mV
MM. ......, 170mV
Output Level/Impedance .
Rec Out . ................ —150mV/4708
Headphone Jack Rated Output/Impedance |
0.005% THD ............... ..-091v/80
Frequency Response +0 dB
CD, Aux, Tape, Tuner . . .. . 20Hz > 20kHz _ 9 Бав
(Tone Bypass ON) SR
RIAA Equalization Deviation
{20Hz ~ 20k Hz) Du. |
Phono MC... .... ere aaa +0.зав
Total Harmonic Distortion |
Phono MC to Rec Out (3V) ... .. ....... 0.005%
Phono MM to Rec Out (3V) . ......... 0.003%
Aux, Tape, Tuner, CD to SP Out 62.5W/892 . 0.005% -
Intermodulation Distortion
Aux, Tape, Tuner, CD Rated Qutput/88 . . . 0.002%
IW/8BQ.... recen. aaa 0.003%
Signal to Noise Ratio (IHF-A-Net work)
Phono MC (500uV Input Shorted) . . . . .. .. 80dB
Phono MM (6 mV input Shorted) ,..... .. 94dB
Aux, Tape, Tuner, CD (Shorted) . . . .. .. . 106dB
Signal to Noise Ratio (New IHF) В
Phono MC... .. aaa . . 76dB
MM. 2422220 aa aaa 79dB
Aux, Tape, Tuner, CD : .... 1111141140 86dB
Residual Noise {IHF-A-Network) , . . . . .., . .. 133uV
Channel Separation
Phono MM (Input Shorted 1kHz, vol —30dB). . 70dB
Aux, Tape (5.1 k&2, 1 kHz, vol —30dB} . .. .. 65dB
Tone Control Characteristics |
Bass boost/cut . ........... *10dB (at 20Hz)
-— turnover frequency. ....... 125,500Hz
- Treble boost/cut .. .. .. «+ +. *10dB lat 20kHz)
turnover frequency . , . . . .... 2.5k, 8k Hz
Filter Characteristics
Low (Subsonic). .. ........ 15Hz, —12dB/oct
High .............. e. TOkHZ, —12dB/oct
Continuous Loudness Control (Level-related equalization)
Attenuation . . . .. ......... —40 dB (at 1kHz)
Audio Muting . . . . . 4 4 4 4 4 4 4 4 4 4 1 4 12 A —20dB
Gain tracking error (0 to —60 de)". ......... 2dB
Power Supply . . . ............. AC120V, 60HZz
Power Consumption , . .. ........ es 450W
AC Outlet |
Switched x 2 , ............. 100W max total
Unswitched x1, , 441111111111 10 200W max
Dimensions (W x H x D)... . . .. 435 x 147 x 422 mm
(17-1/8" x 5-3/4" x 16-5/8")
Weight , , . . 111 0 4 444 4 6 04 0 4 0 1 0 11,5 Ка
*
(25.3 Ibs.)
Specifications subject to change without notice.
SINCE 1887
NIPPON GAKKI CO., LTD. HAMAMATSU, JAPAN
BWgG.R Printed in Japan 6