Onkyo Stereo Amplifier A 9377 User Manual

Integrated Amplifier  
Introduction ....................................5  
Connections .................................11  
Enjoying Audio Sources..............15  
Troubleshooting ...........................18  
Specifications...............................19  
Block Diagram..............................19  
A-9377  
Instruction Manual  
Thank you for purchasing the Onkyo A-9377  
Integrated Amplifier. Please read this manual thor-  
oughly before making any connections or plugging in  
your new Onkyo product. Following the instructions in  
this manual will enable you to obtain optimum perfor-  
mance and listening enjoyment from your new Onkyo  
product. Please retain this manual for future reference.  
En  
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Precautions  
1. Recording Copyright—Unless it’s for personal use  
only, recording copyrighted material is illegal with-  
out the permission of the copyright holder.  
• If you do not use this unit for a long time, it may  
not work properly the next time you turn it on, so  
be sure to use it occasionally.  
2. AC Fuse—The AC fuse inside the unit is not user-  
serviceable. If you cannot turn on the unit, contact  
your Onkyo dealer.  
For European Models  
3. Care—Occasionally you should dust the unit all  
over with a soft cloth. For stubborn stains, use a soft  
cloth dampened with a weak solution of mild deter-  
gent and water. Dry the unit immediately afterwards  
with a clean cloth. Do not use abrasive cloths, thin-  
ners, alcohol, or other chemical solvents, because  
they may damage the finish or remove the panel let-  
tering.  
Declaration of Conformity  
We,  
ONKYO EUROPE  
ELECTRONICS GmbH  
LIEGNITZERSTRASSE 6,  
82194 GROEBENZELL,  
GERMANY  
declare in own responsibility, that the ONKYO product  
described in this instruction manual is in compliance with the  
corresponding  
technical standards such as EN60065,  
EN55013, EN55020 and EN61000-3-2, -3-3.  
4. Power  
WARNING  
GROEBENZELL, GERMANY  
BEFORE PLUGGING IN THE UNIT FOR THE  
FIRST TIME, READ THE FOLLOWING SEC-  
TION CAREFULLY.  
K. MIYAGI  
ONKYO EUROPE ELECTRONICS GmbH  
AC outlet voltages vary from country to country.  
Make sure that the voltage in your area meets the  
voltage requirements printed on the unit’s rear panel  
(AC 120/220-240 V, 50/60 Hz).  
The power cord plug is used to disconnect this unit  
from the AC power source. Make sure that the plug  
is readily operable (easily accessible) at all times.  
Some models have a voltage selector switch for  
compatibility with power systems around the world.  
Before you plug in such a model, make sure that the  
voltage selector is set to the correct voltage for your  
area. If it isn’t, use a small screwdriver to set it as  
appropriate. For example, if the voltage in your area  
is 120 volts, set the selector to “120V.” If it’s  
between 220 and 240 volts, set it to “220-240 V.”  
5. Never Touch this Unit with Wet Hands—Never  
handle this unit or its power cord while your hands  
are wet or damp. If water or any other liquid gets  
inside this unit, have it checked by your Onkyo  
dealer.  
6. Handling Notes  
• If you need to transport this unit, use the original  
packaging to pack it how it was when you origi-  
nally bought it.  
• Do not leave rubber or plastic items on this unit  
for a long time, because they may leave marks on  
the case.  
• This unit’s top and rear panels may get warm  
after prolonged use. This is normal.  
3
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Features ................................................................................................................................... 5  
Rear Panel................................................................................................................................ 7  
Remote Controller................................................................................................................... 8  
Buttons for Controlling the A-9377...................................................................................... 8  
Buttons for Controlling Other Onkyo Components.............................................................. 9  
Connecting Your Speakers .................................................................................................. 11  
Speaker Connection Precautions...................................................................................... 11  
Connecting the Speaker Cables ....................................................................................... 11  
Audio Connection Precautions.......................................................................................... 12  
Connecting a CD Player.................................................................................................... 12  
Connecting a Cassette Deck............................................................................................. 13  
Connecting a Component with a Line Output (TV, game console, etc.) ........................... 13  
Connecting  
Components ............................................................................................ 14  
Power Connections............................................................................................................... 14  
Connecting the Power Cords of Other Components......................................................... 14  
Connecting the A-9377’s Power Cord............................................................................... 14  
Selecting Speakers ............................................................................................................... 15  
Using Headphones................................................................................................................ 15  
Selecting the Input Source................................................................................................ 16  
Muting the A-9377............................................................................................................. 16  
Using the Direct Function.................................................................................................. 16  
Adjusting the Bass, Treble, and Balance .......................................................................... 17  
Appendix  
Troubleshooting.................................................................................................................... 18  
Specifications........................................................................................................................ 19  
Block Diagram ....................................................................................................................... 19  
4
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Introduction  
Features  
Supplied Accessories  
90 W/Ch into 4 ohms (IEC)  
WRAT—Wide Range Amplifier Technology  
All discrete output stage circuitry  
Massive power transformer  
Precision motor volume control  
Tone control (bass/treble)  
Direct mode  
Make sure you have the following accessories:  
Remote controller and two batteries (AA/R6)  
Rec selector  
6 inputs and 2 outputs  
Phono input  
Preout output  
Speaker A/B drive  
Hi-rigidity, anti-resonant chassis  
Aluminum front panel and volume knob  
Headphone jack  
Compatible with RI Dock for iPod  
RI-compatible remote controller  
Power cord  
(Depending on the destination country, two  
power cords may be included. Use the cord  
that’s compatible with your wall outlet.)  
* iPod is a trademark of Apple Inc., registered in the U.S. and  
other countries.  
* In catalogs and on packaging, the letter added to the end of  
the product name indicates the product’s color. Specifica-  
tions and operation are the same regardless of color.  
5
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Introduction—Continued  
Front Panel  
1
2
3 4 5  
6
7 8 9  
J
K L  
A POWER ON/OFF switch (15)  
H TONE/DIRECT button and indicator (16)  
Turns the Direct function on or off. The indicator  
lights up when the Direct function is on.  
Turns the A-9377 on or off.  
B SPEAKERS selector and indicators (15)  
Selects speaker set A, speaker set B, both sets of  
speakers, or turns the speakers off altogether. The A  
and B indicators show which speaker set is selected.  
I REC SELECTOR (17)  
Selects the source to be recorded: LINE, PHONO,  
CD, OFF, TUNER, DOCK, SOURCE.  
C BASS control (17)  
J Input Selector and indicators (16)  
Selects the input source: LINE, DOCK, PHONO,  
CD, TUNER, or TAPE. The indicators show which  
input source is selected.  
Adjusts the level of bass sounds.  
D MUTING indicator (16)  
Lights up when the A-9377 is muted.  
K Remote control sensor (10)  
E TREBLE control (17)  
Receives control signals from the remote controller.  
Adjusts the level of treble sounds.  
L PHONES jack (15)  
F Volume control (16)  
Phone jack for connecting a pair of headphones.  
Adjusts the volume.  
G BALANCE control (17)  
Adjusts the balance of the left and right channels.  
6
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Introduction—Continued  
Rear Panel  
1
2
3
4
5
6 7 8 9 J K LM  
N
* The type and number of connectors depends on the  
destination country.  
A GND terminal  
J LINE  
Analog audio input for connecting a component  
Terminal for connecting a turntable’s ground wire.  
with a line-level audio output (e.g., game console,  
TV, etc.)  
B SPEAKERS A  
Terminal posts for connecting speaker set A.  
K DOCK  
Analog audio input for connecting an RI Dock.  
L PREOUT  
C SPEAKERS B  
Terminal posts for connecting speaker set B.  
D AC INLET  
Analog audio output for connecting a separate  
power amplifier.  
Supplied power cord connects here.  
E AC OUTLETS  
Note:  
Supply AC power to other audio components. The  
type of connector depends on the destination coun-  
try.  
• Do not connect a source component to the PRE-  
OUT jacks.  
M
REMOTE CONTROL  
F PHONO (MM)  
(Remote Interactive) jacks can be connected to  
jacks on other Onkyo audio components so that  
you can control them with the A-9377’s remote con-  
Analog audio input for connecting a turntable with a  
moving-magnet cartridge.  
G CD  
troller. To use  
, you must also make an analog  
Analog audio input for connecting a CD player.  
component.  
H TUNER  
Analog audio input is for connecting a tuner.  
N VOLTAGE SELECTOR (not European model)  
If your A-9377 has a VOLTAGE selector, set it to  
ging in the power cord. (See page 3.)  
I TAPE IN/OUT  
Analog audio input and output for connecting a cas-  
sette deck.  
See pages 11–14 for connection information.  
7
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Introduction—Continued  
Buttons for Controlling the A-9377  
Remote Controller  
The following buttons control the A-9377:  
In the illustration below, numbers in circles indicate but-  
tons that can be used to control the A-9377. These but-  
tons are explained on this page. Numbers in squares  
indicate buttons that can be used to control other Onkyo  
D VOLUME [ ]/[ ] (16)  
Adjusts the volume of the A-9377.  
O INPUT [ ]/[ ] (16)  
Selects the input source: LINE, DOCK, PHONO,  
CD, TUNER, or TAPE.  
audio components connected to the A-9377 via  
These buttons are explained on the next page.  
.
Q MUTING (16)  
Mutes the A-9377.  
0
A
B
1
2
C
D
O
3
F
4
Q
5
6
H
I
7
8
9
8
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Introduction—Continued  
Buttons for Controlling Other Onkyo Components  
When other Onkyo audio components are connected to the A-9377 via  
, you can control them with the A-9377’s  
remote controller. The operation of each button depends on the selected input source. For example, when the DOCK  
input source is selected, the [RANDOM] button will operate an RI Dock/iPod’s Shuffle function. But when the TAPE  
input source is selected, it will operate a cassette deck’s Dolby NR function.  
The following table lists the function of the remote controller’s buttons for each input source. Where no function is  
listed, the button does nothing. Refer to each component’s instruction manual for complete operating instructions.  
Input source  
DOCK  
(RI Dock)  
CD  
(CD player)  
TUNER  
(Tuner)  
TAPE  
(Cassette deck)  
Remote  
controller button  
CD [1]...[9]  
[1]...[9]  
[>10]  
1
2
[>10]  
[10/0]  
[10/0]  
[BAND]  
[BAND]  
[FM MODE]  
PRESET [+]/[–]  
[FM MODE]  
PRESET [+]/[–]  
TUNING [ ]/[  
[DIMMER]  
]
TUNING [ ]/[  
]
3
5
[DIMMER]  
*1  
Pause [  
Play [  
]
Pause [  
]
Pause [  
Play [  
]
Reverse Play [  
]
1
]
]
Play [  
]
]
]
Play [ ]*  
Stop [ ]*  
1
Pause [  
]
Stop [  
Stop [  
6
7
8
Rew/FF [  
]/[  
]
Rew/FF [  
]/[  
]
Rew/FF [  
]/[  
]
[RANDOM]  
[REPEAT]  
[SHUFFLE]  
[REPEAT]  
[RANDOM]  
[REPEAT]  
[DOLBY NR]  
[REV MODE]  
PLAYLIST [ ]/[  
ALBUM [ ]/[  
]
PLAYLIST [ ]/[  
ALBUM [ ]/[  
]
]
]
9
MENU/SELECT  
]/[  
[PLAY MODE]  
MENU/SELECT  
]/[  
[
]
[
]
0
A
B
C
D
F
[PLAY MODE]  
*2  
[GROUP/SEARCH]  
[MEMORY]  
[ENTER]  
[SEARCH]  
[MEMORY]  
[ENTER]  
[CLR]  
[CLR]  
[DISPLAY]  
[BACKLIGHT]  
Prev/Next  
[DISPLAY]  
Prev/Next  
H
I
Prev/Next [  
]/[  
]
Rew/FF [  
]/[  
]
[
]/[  
]
[
]/[  
]
[SCROLL]  
[BACKLIGHT]  
1. On a double cassette deck, only deck B can be controlled.  
2. For use with MP3 CDs.  
Note:  
• With some components, some buttons may not work  
as expected. Refer to the component’s instruction  
manual for complete operating instructions.  
9
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Introduction—Continued  
Installing the Batteries  
Aiming the Remote Controller  
When using the remote controller, point it toward the  
A-9377’s remote control sensor, as shown below.  
To open the battery compartment, press  
the small hollow and slide open the cover.  
1
Remote control sensor  
About 5 m  
(16 f  
eet)  
Insert the two supplied batteries (AA/R6)  
in accordance with the polarity diagram  
inside the battery compartment.  
2
Notes:  
• The remote controller may not work reliably if the  
A-9377 is subjected to bright light, such as direct sun-  
light or inverter-type fluorescent lights. Keep this in  
mind when installing.  
• If another remote controller of the same type is used in  
the same room, or the A-9377 is installed close to  
equipment that uses infrared rays, the remote control-  
ler may not work reliably.  
Slide the cover shut.  
3
• Do not put anything on top of the remote controller,  
such as a book or magazine, because a button may be  
pressed continuously, thereby draining the batteries.  
• The remote controller may not work reliably if the  
A-9377 is installed in a rack behind colored glass  
doors. Keep this in mind when installing.  
• The remote controller will not work if there’s an obsta-  
cle between it and the A-9377’s remote control sensor.  
Notes:  
• If the remote controller doesn’t work reliably, try  
replacing the batteries.  
• Do not mix new and old batteries or different types of  
batteries.  
• If you intend not to use the remote controller for a long  
time, remove the batteries to prevent damage from  
leakage or corrosion.  
• Expired batteries should be removed as soon as possi-  
ble to prevent damage from leakage or corrosion.  
10  
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Connections  
ConnectingYour Speakers  
You can connect one or two sets of speakers (A/B) to  
the A-9377 and select which set outputs sound, or use  
both sets simultaneously.  
Connecting the Speaker Cables  
Strip about 15 mm (5/8 in.)  
15 mm  
(5/8")  
1
of insulation from the  
ends of the speaker  
Speaker Connection Precautions  
• Always connect speakers in pairs.  
cables, and twist the bare  
wires tightly, as shown.  
• If you want to output sound from speaker setsA and B  
simultaneously, you must use speakers with an imped-  
ance of 8 to 16 ohms. If you connect speakers with a  
lower impedance, and use the A-9377 at high volume  
levels for a long period, the built-in protection circuit  
may be activated.  
• If your speakers have an impedance of 4 to 8 ohms,  
connect them to either the SPEAKERS A or SPEAK-  
ERS B terminals, or do not output sound from both  
speaker sets simultaneously.  
Unscrew the terminal.  
2
Fully insert the bare  
wires.  
3
• Disconnect the power cord from the wall outlet before  
making any connections.  
Screw the terminal tight.  
4
• Read the instructions supplied with your speakers.  
• Pay close attention to speaker wiring polarity. In other  
words, connect positive (+) terminals only to positive  
(+) terminals, and negative (–) terminals only to nega-  
tive (–) terminals. If you get them the wrong way  
around, the sound will be out of phase and will sound  
unnatural.  
• Unnecessarily long or very thin speaker cables may  
affect the sound quality and should be avoided.  
• Be careful not to short the  
The following illustration shows which speaker should  
be connected to each pair of terminals.  
Right  
speaker  
Left  
speaker  
Speaker set A  
+
+
positive and negative wires.  
Make sure also the wires do  
not touch the rear panel.  
Doing so may damage the  
A-9377.  
• Do not connect more than one  
cable to each speaker terminal. Doing so may damage  
the A-9377.  
• Do not connect a speaker to more than one pair of  
speaker terminals.  
A-9377  
+
+
Right  
speaker  
Left  
speaker  
Speaker set B  
11  
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Connections—Continued  
ConnectingYour Components  
• Push each plug in all the  
way to make a good connec-  
tion (loose connections can  
cause noise or malfunc-  
tions).  
Audio Connection Precautions  
Right!  
• Always refer to the instruction manual that came  
with the component you are connecting.  
• Do not plug in the power cord until all connections  
have been made.  
Wrong!  
RCA Connection Color Coding  
• Red connectors are used for the right channel, and  
white connectors are used for the left channel.  
• Do not bind audio cables with power cords and  
speaker cables. Doing so may adversely affect the  
sound quality.  
• To prevent interference, keep power cords and  
speaker cables away from the tuner’s antenna.  
Left (white)  
L
Right (red)  
R
Connecting a Turntable  
Connecting a CD Player  
The A-9377’s PHONO input is designed for use with a  
turntable fitted with a moving-magnet (MM) cartridge.  
Use an analog audio cable to connect the A-9377’s  
PHONO L/R jacks to the audio output jacks on the turn-  
table, as shown. If there are RCA shorting plugs in the  
jacks, remove them before connecting.  
Use an analog audio cable to connect the A-9377’s CD  
L/R jacks to the analog audio output jacks on the CD  
player, as shown.  
ANALOG  
OUT  
AUDIO OUT  
Connecting a Tuner  
Use an analog audio cable to connect the A-9377’s  
TUNER L/R jacks to the analog audio output jacks on  
the tuner, as shown.  
Ground wire  
Notes:  
• If the turntable has a ground wire, connect it to  
A-9377’s GND terminal. With some turntables, con-  
necting the ground wire may cause hum, in which case  
it should be disconnected.  
• If the turntable has a moving-coil (MC) type cartridge,  
you’ll need a commercially available MC head amp or  
transformer. In this case, connect the turntable to the  
head amp or transformer, and connect that to the  
A-9377’s PHONO L/R jacks.  
OUT  
12  
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Connections—Continued  
Connecting a Cassette Deck  
Connecting a Component with a Line  
Output (TV, game console, etc.)  
Use an analog audio cable to connect the A-9377’s  
TAPE IN L/R jacks to the cassette deck’s analog audio  
output jacks, and use another analog audio cable to con-  
nect the A-9377’s TAPE OUT L/R jacks to the cassette  
deck’s analog audio input jacks, as shown.  
Use an analog audio cable to connect the A-9377’s  
LINE L/R jacks to the line output jacks on the TV or  
other component, as shown.  
AUDIO OUT  
/
REC  
(IN)  
PLAY  
(OUT)  
Note:  
Connecting an Onkyo RI Dock  
• If your TV doesn’t have an audio output, connect your  
VCR’s audio output to the A-9377, and use your  
VCR’s tuner to listen to the TV.  
Use an analog audio cable to connect the A-9377’s  
DOCK L/R jacks to the RI Dock’s analog audio output  
jacks, and use an  
jack to the RI Dock’s  
cable to connect the A-9377’s  
jack, as shown.  
Connecting a Power Amplifier  
You can use the A-9377 as just a preamplifier and con-  
nect it to a more powerful power amplifier.  
Use an analog audio cable to connect the A-9377’s  
PREOUT L/R jacks to the analog audio input jacks on  
the power amplifier, as shown.  
*
R
----  
L
AUDIO OUT  
RI Dock  
Analog input jacks  
Note:  
* See page 14 if you need to connect several  
ble Onkyo components to the A-9377.  
-capa-  
• Signals output by the PREOUT jacks are not affected  
by the A-9377’s Volume, BALANCE, BASS, and  
TREBLE controls.  
• When the A-9377 is connected to a power amplifier, if  
the power amplifier is off and the A-9377 is used on its  
own, the sound may be distorted. To prevent this,  
always turn on the power amplifier, or disconnect it  
from the A-9377.  
Note:  
• If you have an RI Dock such as the DS-A1 or DS-A2,  
set its RI MODE switch to “HDD” or “HDD/DOCK.”  
Refer to the RI Dock’s instruction manual for details.  
13  
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Connections—Continued  
Connecting  
Components  
Power Connections  
Connecting the A-9377 to your other Onkyo  
ble components with cables allows you to control  
them all with the A-9377’s remote controller, like an  
integrated system, with the following functionality.  
-capa-  
Connecting the Power Cords of Other  
Components  
The A-9377 has switched AC outlets on its rear panel  
that can be used to connect the power cords of other  
components that you intend to use with the A-9377.  
These components can then be left turned on so that  
they turn on and off as and when the A-9377 is turned  
on and off.  
Direct Change  
with  
, the A-9377 will automatically select that  
component as the input source.  
Remote Control  
You can control components connected with  
the A-9377’s remote controller. See page 9 for details.  
Use theAC outlets for components that have no Standby  
from  
function, such as the Onkyo CD Player.  
-capable  
Onkyo components with a Standby function must be  
connected directly to a wall outlet.  
To use all functionality, in addition to an con-  
nection, each component must be connected to an  
analog audio input on the A-9377.  
A-9377  
Onkyo CD player,  
Onkyo cassete deck,  
jacks  
Onkyo tuner, etc.  
Cautions:  
• Connect only audio components to the AC OUT-  
LETS.  
jacks  
• Make sure the total capacity of the components you  
connect to the AC OUTLETS does not exceed the  
maximum capacity stated on the A-9377’s rear panel  
(TOTAL 100 W).  
Onkyo RI Dock  
cables  
Connecting the A-9377’s Power Cord  
• Before connecting the power cord, connect all of your  
speakers and audio components.  
Notes:  
• Push plugs in all the way to make good connections.  
• Turning on the A-9377 may cause a momentary power  
surge, which might interfere with other electrical  
equipment on the same circuit. If this is an issue, plug  
the A-9377 into a different branch circuit.  
cables are special cables solely for use with  
Onkyo products (no  
cables are supplied with the  
cables for connections.  
jacks to only -capable Onkyo compo-  
A-9377). Use only  
• Connect  
nents. Connecting them to other manufacturers’ com-  
ponent may cause a malfunction.  
• Some  
port all  
-capable Onkyo components may not sup-  
functionality. Refer to each component’s  
instruction manual for full details.  
To wall outlet  
For optimum performance, plug the A-9377 into its own  
wall outlet. Do not connect it to a wall outlet that’s also  
used by a high-power appliance, such as a heater.  
14  
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Enjoying Audio Sources  
Turning On the A-9377  
Using Headphones  
You can connect a pair of stereo headphones (1/4-inch  
phone plug) to the A-9377’s PHONES jack for private  
listening.  
POWER  
To turn on the A-9377, press the  
[POWER] switch.  
On the Input Selector, the indicator for  
the currently selected source lights up.  
Notes:  
• Always turn down the volume before connecting your  
headphones.  
• The speakers are not turned off when the headphones  
plug is inserted in the PHONES jack. To turn off the  
speakers, set the SPEAKERS selector to OFF.  
When the A-9377 is turned on, to pro-  
tect the speakers, it outputs no sound  
for about 5 seconds, allowing the inter-  
nal circuitry time to stabilize.  
To turn off the A-9377, press the  
[POWER] switch again.  
Selecting Speakers  
SPEAKERS selector  
You can select which set of speakers outputs sound.  
Use the SPEAKERS selector to  
select the speakers.  
OFF: No speakers output sound.  
A: Speaker set A outputs sound.  
B: Speaker set B outputs sound.  
A+B: Both speaker set A and speaker  
set B output sound.  
The A and B indicators show which  
speaker set is selected.  
15  
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Enjoying Audio Sources—Continued  
Adjusting the Volume  
Listening to Components  
To adjust the volume, use the  
A-9377’s Volume control, or the  
remote controller’s VOLUME  
Volume control  
Input Selector  
TONE/DIRECT  
[
]/[ ] buttons.  
Turn the Volume control clockwise to  
increase the volume; counterclock-  
wise to decrease it.  
Remote  
controller  
INPUT  
/
Muting the A-9377  
VOLUME  
/
MUTING  
You can temporarily mute the output of the A-9377.  
Press the remote controller’s  
[MUTING] button.  
Remote  
controller  
The output of the A-9377 is muted and  
the MUTING indicator flashes.  
Selecting the Input Source  
Use the Input Selector to select  
the source component you want  
to listen to.  
To unmute the A-9377, press the  
[MUTING] button again.  
LINE: Component connected to the  
LINE jacks.  
The Mute function can also be can-  
celled by adjusting the Volume control  
or pressing the remote controller’s  
VOLUME [ ]/[ ] buttons.  
DOCK: Component connected to the  
DOCK jacks.  
PHONO: Turntable connected to the  
PHONO jacks.  
CD: Component connected to the CD  
jacks.  
Using the Direct Function  
TUNER: Component connected to the  
TUNER jacks.  
TAPE: Component connected to the  
TAPE IN jacks.  
With the Direct function, you can bypass the tone con-  
trols for a purer sound.  
Remote  
controller  
Press the A-9377’s  
You can also use the remote control-  
ler’s INPUT [ ]/[ ] buttons to select  
the input source.  
[TONE/DIRECT] button.  
The tone controls are bypassed and the  
TONE/DIRECT indicator lights up.  
To turn off the Direct function,  
press the [TONE/DIRECT] button  
again.  
The Direct function turns off and the  
TONE/DIRECT indicator goes off.  
Note:  
• The BASS and TREBLE tone controls have no effect  
while the Direct function is on.  
16  
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Enjoying Audio Sources—Continued  
Adjusting the Bass,Treble, and Balance  
Recording  
BASS  
TREBLE  
BALANCE  
Unless you have the full consent of the  
copyright holder, copyright laws prohibit  
using your recordings for anything other  
than personal enjoyment!  
REC SELECTOR  
Use the BASS control to adjust  
the bass.  
Turn the control clockwise to increase  
the level of bass sounds; counterclock-  
wise to decrease the level.  
Use the REC SELECTOR to  
select the source you want to  
record.  
LINE: Component connected to the  
LINE jacks.  
PHONO: Turntable connected to the  
PHONO jacks.  
CD: Component connected to the CD  
jacks.  
OFF: Nothing is output by the TAPE  
OUT L/R jacks.  
TUNER: Component connected to the  
TUNER jacks.  
DOCK: Component connected to the  
DOCK jacks.  
1
Use theTREBLE control to adjust  
the treble.  
Turn the control clockwise to increase  
the level of treble sounds; counter-  
clockwise to decrease the level.  
Use the BALANCE control to  
adjust the left/right balance.  
Turn the control clockwise to increase  
the level of right speaker; counter-  
clockwise to increase the level of left  
speaker. Normally, it should be set to  
the central position.  
SOURCE: Component selected by the  
Input Selector.  
Prepare the recorder:  
• Set the recorder so that it’s ready for  
recording.  
2
• If necessary, adjust the recording  
level on the recorder.  
• See the recorder’s instruction manual  
for more information.  
Start playback on the source  
component.  
3
Notes:  
• Signals output by the TAPE OUT L/R jacks are not  
affected by the A-9377’sVolume, BALANCE, BASS,  
and TREBLE controls.  
• If you’re using an Onkyo cassette deck that’s con-  
nected via  
, for dubbing or synchro recording, set  
the REC SELECTOR to SOURCE.  
17  
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Troubleshooting  
If you have any trouble using the A-9377, look for a  
solution here. If you cannot resolve the issue yourself,  
contact your Onkyo dealer.  
Remote Controller  
The remote controller doesn’t work.  
• Make sure that the batteries are installed with the cor-  
rect polarity (page 10).  
Power  
• Try installing new batteries. Do not mix different  
types of batteries or old and new batteries (page 10).  
• Make sure that the remote controller is not too far  
away from the A-9377 and that there’s no obstruction  
between the remote controller and the A-9377’s  
remote control sensor (page 10).  
• Make sure that the A-9377 is not subjected to direct  
sunshine or inverter-type florescent lights. Relocate if  
necessary (page 10).  
Cannot turn on the A-9377.  
• Make sure that the power cord is properly plugged into  
the wall outlet.  
• Unplug the power cord from the wall outlet, wait ten  
seconds or more, then plug it in again.  
The SPEAKERS A and B indicators are both flashing.  
• The amp protection circuit has been activated. Set the  
POWER switch to OFF immediately, remove the  
power cord from the wall outlet, and contact your  
Onkyo dealer.  
• If the A-9377 is installed in a rack or cabinet with col-  
ored glass doors, the remote controller may not work  
reliably when the doors are closed (page 10).  
Audio  
Cannot control other components?  
• If it’s an Onkyo component, make sure that the  
cable and analog audio cable are connected properly.  
There’s no sound or it’s very quiet.  
• Make sure that all audio plugs are pushed in all the  
way (page 12).  
• Make sure that the inputs and outputs of all compo-  
Connecting only an  
cable will not work. (page 14)  
• Make sure that the polarity of the speaker cables is  
correct and that the bare wires are in contact with the  
metal part of each speaker terminal (page 11).  
• Make sure that the correct input source is selected  
(page 16).  
• If the MUTING indicator is flashing, press the remote  
controller’s [MUTING] button to unmute the A-9377  
(page 16).  
The A-9377 contains a microcomputer for signal  
processing and control functions. In very rare  
situations, severe interference, noise from an  
external source, or static electricity may cause it  
to lock up. In the unlikely event that this happens,  
unplug the power cord from the wall outlet, wait  
at least ten seconds, and then plug it back in  
again.  
• Make sure that none of the cables are bent, twisted, or  
damaged.  
• If your turntable uses an MC type cartridge, you must  
use an MC head amp or MC transformer (page 12).  
• Make sure the SPEAKERS selector is set correctly. If  
it’s set to OFF, no speakers will output sound  
(page 15).  
Onkyo is not responsible for damages (such as  
CD rental fees) due to unsuccessful recordings  
caused by the unit’s malfunction. Before you  
record important data, make sure that the mate-  
rial will be recorded correctly.  
Noise can be heard.  
• Using cable ties to bundle audio cables with power  
cords, speaker cables, and so on may degrade the  
audio performance, so do not bundle them together.  
• An audio cable may be picking up interference. Try  
repositioning your cables.  
The tone controls have no effect.  
• If the TONE/DIRECT indicator is on, the Direct func-  
tion is on and the tone controls have no effect. Press  
the [TONE/DIRECT] button to turn the function off.  
The TONE/DIRECT indicator will go off (page 16).  
18  
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Specifications  
Rated output power  
European (IEC):  
Maximum output power (JEITA):  
Dynamic power:  
2ch × 90 W at 4 , 1 kHz, 2ch driven  
2ch × 132 W at 4 , 1 kHz, 2ch driven  
124 W + 124 W (4 )  
80 W + 80 W (8 )  
THD (total harmonic distortion):  
0.08% (1 kHz, 1 W)  
Damping factor:  
Input sensitivity and impedance:  
60 (1 kHz, 8 )  
200 mV, 45 k(LINE)  
2.5 mV, 45 k(PHONO MM)  
150 mV, 2.2 k(REC OUT)  
50 mV (MM, 1 kHz, 0.5%)  
10 Hz–100 kHz, +1 dB, –3 dB (CD)  
+10 dB, –8 dB, 100 Hz (BASS)  
+9 dB, –8 dB, 10 kHz (TREBLE)  
96 dB (CD, IHF-A)  
Output level and impedance:  
Phono overload:  
Frequency response:  
Tone control:  
Signal to Noise ratio:  
Speaker impedance:  
Power supply:  
70 dB (PHONO, IHF-A)  
4–16 Ω  
AC 230 V, 50 Hz  
AC 120/220-240 V, 50/60 Hz  
286 W  
Power consumption:  
Dimensions (W × H × D):  
Weight:  
435 × 150 × 348 mm  
17-1/8 × 5-7/8 × 13-11/16  
8.8 kg (19.4 lb.)  
Analog inputs:  
Analog outputs:  
Speaker outputs:  
Phones:  
PHONO, CD, TUNER, TAPE, LINE, DOCK  
TAPE, PREOUT  
2 (A, B)  
1
Specifications and features are subject to change without notice.  
Block Diagram  
PHONO AMP  
PHONO  
SELECTOR  
INDICATOR  
DIRECT  
INDICATOR  
MUTE  
INDICATOR  
SPEAKER A/B  
INDICATOR  
CD  
Selector IC and  
MAIN VOLUME  
L ch  
TONE AMP  
TUNER  
BASS TREBLE  
POWER AMP  
SPEAKERS  
TONE/DIRECT  
SPEAKERS A  
SPEAKERS B  
BALANCE  
TAPE IN  
MUTE  
DIRECT AMP  
TAPE OUT  
SPEAKERS A  
SPEAKERS B  
R ch  
LINE  
DOCK  
MUTE CONTROL  
TONE/DIRECT CONTROL  
VOLUME and SELECTOR CONTROL  
PRE-OUT  
RI CONTROL  
19  
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Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN  
Tel: 072-831-8023 Fax: 072-831-8163  
ONKYO U.S.A. CORPORATION  
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.  
Tel: 201-785-2600 Fax: 201-785-2650 http://www.us.onkyo.com/  
ONKYO EUROPE ELECTRONICS GmbH  
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY  
Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.eu.onkyo.com/  
ONKYO EUROPE UK Office  
Suite 1, Gregories Court, Gregories Road, Beaconsfield, Buckinghamshire, HP9 1HQ  
UNITED KINGDOM Tel: +44-(0)1494-681515 Fax: +44(0)-1494-680452  
HOMEPAGE  
ONKYO CHINA LIMITED  
Unit 1&12, 9/F, Ever Gain PlazaTower 1, 88, Container Port Road, Kwai Chung,  
N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039  
I0904-1  
SN 29400100  
(C) Copyright 2009 ONKYO CORPORATION Japan. All rights reserved.  
* 2 9 4 0 0 1 0 0 *  
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