Yamaha Stereo Amplifier AX 497 User Manual

U
AX-497/AX-397  
Stereo Amplifier  
OWNER’S MANUAL  
 
IMPORTANT SAFETY INSTRUCTIONS  
IMPORTANT SAFETY INSTRUCTIONS  
1
2
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5
6
7
Read these instructions.  
Keep these instructions.  
Heed all warnings.  
Follow all instructions.  
Do not use this apparatus near water.  
Clean only with dry cloth.  
Do not block any ventilation openings. Install in accordance  
with the manufacturer’s instructions.  
Do not install near any heat sources such as radiators, heat  
registers, stoves, or other apparatus (including amplifiers)  
that produce heat.  
Do not defeat the safety purpose of the polarized or  
grounding-type plug. A polarized plug has two blades with  
one wider than the other. A grounding type plug has two  
blades and a third grounding prong. The wide blade or the  
third prong are provided for your safety. If the provided plug  
does not fit into your outlet, consult an electrician for  
replacement of the obsolete outlet.  
CAUTION  
RISK OF ELECTRIC SHOCK  
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.  
8
9
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.  
10 Protect the power cord from being walked on or pinched  
particularly at plugs, convenience receptacles, and the point  
where they exit from the apparatus.  
11 Only use attachments/accessories specified by the  
manufacturer.  
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 accompanying the appliance.  
12 Use only with the cart, stand, tripod,  
bracket, or table specified by the  
manufacturer, or sold with the apparatus.  
IMPORTANT  
When a cart is used, use caution when  
moving the cart/apparatus combination to  
avoid injury from tip-over.  
Please record the serial number of this unit in the space  
below.  
MODEL:  
Serial No.:  
The serial number is located on the rear of the unit.  
Retain this Owner’s Manual in a safe place for future  
reference.  
13 Unplug this apparatus during lightning storms or when  
unused for long periods of time.  
14 Refer all servicing to qualified service personnel. Servicing  
is required when the apparatus has been damaged in any  
way, such as power-supply cord or plug is damaged, liquid  
has been spilled or objects have fallen into the apparatus, the  
apparatus has been exposed to rain or moisture, does not  
operate normally, or has been dropped.  
We Want You Listening For A Lifetime  
YAMAHA and the Electronic Industries Association’s Consumer Electronics Group want you to get the most out of your  
equipment by playing it at a safe level. One that lets the sound come through loud and clear without annoying blaring or  
distortion – and, most importantly, without affecting your sensitive hearing. Since hearing damage from loud sounds is  
often undetectable until it is too late, YAMAHA and the Electronic Industries Association’s Consumer Electronics Group  
recommend you to avoid prolonged exposure from excessive volume levels.  
i
 
IMPORTANT SAFETY INSTRUCTIONS  
FCC INFORMATION (for US customers)  
1
IMPORTANT NOTICE: DO NOT MODIFY THIS  
UNIT!  
Compliance with FCC regulations does not guarantee that  
interference will not occur in all installations. If this  
product is found to be the source of interference, which  
can be determined by turning the unit “OFF” and “ON”,  
please try to eliminate the problem by using one of the  
following measures:  
This product, when installed as indicated in the  
instructions contained in this manual, meets FCC  
requirements. Modifications not expressly approved by  
Yamaha may void your authority, granted by the FCC, to  
use the product.  
IMPORTANT: When connecting this product to  
accessories and/or another product use only high quality  
shielded cables. Cable/s supplied with this product MUST  
be used. Follow all installation instructions. Failure to  
follow instructions could void your FCC authorization to  
use this product in the USA.  
NOTE: This product has been tested and found to comply  
with the requirements listed in FCC Regulations, Part 15  
for Class “B” digital devices. Compliance with these  
requirements provides a reasonable level of assurance that  
your use of this product in a residential environment will  
not result in harmful interference with other electronic  
devices.  
Relocate either this product or the device that is being  
affected by the interference.  
2
3
Utilize power outlets that are on different branch (circuit  
breaker or fuse) circuits or install AC line filter/s.  
If these corrective measures do not produce satisfactory  
results, please contact the local retailer authorized to  
distribute this type of product. If you can not locate the  
appropriate retailer, please contact Yamaha Electronics  
Corp., U.S.A. 6660 Orangethorpe Ave, Buena Park, CA  
90620.  
The above statements apply ONLY to those products  
distributed by Yamaha Corporation of America or its  
subsidiaries.  
This equipment generates/uses radio frequencies and, if  
not installed and used according to the instructions found  
in the users manual, may cause interference harmful to the  
operation of other electronic devices.  
ii  
 
CAUTION: READ THIS BEFORE OPERATING YOUR UNIT.  
CAUTION: READ THIS BEFORE OPERATING YOUR UNIT.  
1
2
To assure the finest performance, please read this manual  
carefully. Keep it in a safe place for future reference.  
Install this sound system in a well ventilated, cool, dry, clean  
place – away from direct sunlight, heat sources, vibration,  
dust, moisture, and/or cold. Allow ventilation space of at least  
30 cm on the top, 20 cm on the left and right, and 20 cm on  
the back of this unit.  
14 When not planning to use this unit for long periods of time  
(i.e. vacation), disconnect the AC power plug from the wall  
outlet.  
15 Install this unit near the AC outlet and where the AC power  
plug can be reached easily.  
16 Be sure to read the “TROUBLESHOOTING” section on  
common operating errors before concluding that this unit is  
faulty.  
3
4
Locate this unit away from other electrical appliances, motors,  
or transformers to avoid humming sounds.  
17 Before moving this unit, press STANDBY/ON to set this unit  
in the standby mode, and disconnect the AC power plug from  
the wall outlet.  
Do not expose this unit to sudden temperature changes from  
cold to hot, and do not locate this unit in an environment with  
high humidity (i.e. a room with a humidifier) to prevent  
condensation inside this unit, which may cause an electrical  
shock, fire, damage to this unit, and/or personal injury.  
Avoid installing this unit where foreign objects may fall onto  
this unit and/or this unit may be exposed to liquid dripping or  
splashing. On the top of this unit, do not place:  
18 VOLTAGE SELECTOR (Asia and General models only)  
The VOLTAGE SELECTOR on the rear panel of this unit  
must be set for your local main voltage BEFORE plugging  
into the AC main supply. Voltages are:  
5
General model.............AC 110/120/220/230–240 V, 50/60 Hz  
Asia model ................................AC 220/230–240 V, 50/60 Hz  
Other components, as they may cause damage and/or  
discoloration on the surface of this unit.  
WARNING  
TO REDUCE THE RISK OF FIRE OR ELECTRIC  
SHOCK, DO NOT EXPOSE THIS UNIT TO RAIN  
OR MOISTURE.  
Burning objects (i.e. candles), as they may cause fire,  
damage to this unit, and/or personal injury.  
Containers with liquid in them, as they may fall and liquid  
may cause electrical shock to the user and/or damage to  
this unit.  
As long as this unit is connected to the AC wall outlet,  
it is not disconnected from the AC power source even  
if you turn off this unit by POWER or set it to the  
standby mode by STANDBY/ON.  
6
Do not cover this unit with a newspaper, tablecloth, curtain,  
etc. in order not to obstruct heat radiation. If the temperature  
inside this unit rises, it may cause fire, damage to this unit,  
and/or personal injury.  
7
8
9
Do not plug in this unit to a wall outlet until all connections  
are complete.  
This unit enters the standby mode when you press  
POWER inward to the ON position and then press  
STANDBY/ON. In this state, this unit is designed to  
consume a very small quantity of power.  
Do not operate this unit upside-down. It may overheat,  
possibly causing damage.  
Do not use force on switches, knobs and/or cords.  
10 When disconnecting the power cable from the wall outlet,  
grasp the plug; do not pull the cable.  
FOR CANADIAN CUSTOMERS  
To prevent electric shock, match wide blade of plug to  
wide slot and fully insert.  
This Class B digital apparatus complies with Canadian  
ICES-003.  
11 Do not clean this unit with chemical solvents; this might  
damage the finish. Use a clean, dry cloth.  
12 Only voltage specified on this unit must be used. Using this  
unit with a higher voltage than specified is dangerous and may  
cause fire, damage to this unit, and/or personal injury.  
YAMAHA will not be held responsible for any damage  
resulting from use of this unit with a voltage other than  
specified.  
POUR LES CONSOMMATEURS CANADIENS  
Pour éviter les chocs électriques, introduire la lame la  
plus large de la fiche dans la borne correspondante de  
la prise et pousser jusqu’au fond.  
Cet appareil numérique de la classe B est conforme à  
la norme NMB-003 du Canada.  
13 Do not attempt to modify or fix this unit. Contact qualified  
YAMAHA service personnel when any service is needed. The  
cabinet should never be opened for any reasons.  
iii  
 
FEATURES  
FEATURES  
Highly dynamic power, low impedance drive  
capability  
Continuously variable loudness control  
CD/DVD DIRECT AMP switch used to reproduce the  
purest CD and DVD sound  
[ AX-497 ]  
Minimum RMS output power  
85 W + 85 W (8 ), 0.019% THD, 20 Hz to 20 kHz  
REC OUT selector independent of input source  
selection  
Remote control capability  
PURE DIRECT switch used to reproduce the purest  
source sound  
[ AX-397 ]  
Minimum RMS output power  
60 W + 60 W (8 ), 0.019% THD, 20 Hz to 20 kHz  
TAPE MONITOR switch used to monitor the sound  
being recorded  
• This document is the owner’s manual for both AX-497 and AX-397. Model names are given where the details of functions are unique  
to each model. Illustrations for AX-497 are mainly used for explanations.  
y indicates a tip for your operation.  
• Some operations can be performed by using either the buttons on the main unit or on the remote control. In cases when the button  
names differ between the main unit and the remote control, the names of the buttons on the remote control are given in parentheses.  
• This manual is printed prior to production. Design and specifications are subject to change in part as a result of improvements, etc. In  
case of differences between the manual and the product, the product has priority.  
SUPPLIED ACCESSORIES  
Please check that you received all of the following parts.  
Remote control  
POWER  
Batteries (2)  
(AAA, R03, UM-4)  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
MD  
TAPE  
u
+
PRESET  
d
VOLUME  
A/B/C/D/E  
A/B  
DISPLAY  
w
e
f
DISPLAY  
DIR  
A
DIR  
B
REC  
b
s
a
DISC  
CD TAPE  
p
2
 
   
CONTROLS AND FUNCTIONS  
CONTROLS AND FUNCTIONS  
Front panel  
AX-497  
12  
3
4
5
6
8
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
PURE DIRECT  
CD/DVD DIRECT AMP  
ON  
OFF  
16  
20  
12  
VOLUME  
INPUT  
26  
8
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
REC OUT  
DISPLAY  
FLAT  
CD/DVD  
1
1
1
1
1
1
1
TAPE  
MD  
AUX  
TUNER  
PHONO  
30dB  
A
B
40  
4
2
2
4
2
4
2
4
2
2
2
4
10  
STANDBY  
/ON  
3
3
3
3
3
3
3
9
4
4
4
8
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
60  
2
6
0
-dB  
9
0
A
B
C
D
E
F
AX-397  
12  
3
4
5
7
8
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
TAPE MONITOR  
CD/DVD DIRECT AMP  
ON  
OFF  
16  
20  
12  
VOLUME  
26  
8
INPUT  
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
DISPLAY  
FLAT  
1
1
1
1
1
1
1
30dB  
A
B
40  
4
2
2
2
4
2
4
2
2
2
4
10  
STANDBY  
/ON  
3
3
3
3
3
3
3
9
8
4
4
4
4
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
60  
2
6
0
-dB  
9
0
A
B
C
D
F
1 POWER  
2 STANDBY indicator  
Press inward to the ON position to provide this unit with  
power supply from the AC wall outlet. In this state, you  
can turn on this unit or set it to the standby mode by  
pressing STANDBY/ON.  
Lights up when this unit is in the standby mode.  
3 STANDBY/ON  
Turns on this unit or sets it to the standby mode.  
When you turn on this unit, there will be a few second  
delay before this unit can reproduce sound.  
Press again to release it outward to the OFF position to  
Notes  
• This switch is operational only when POWER is pressed inward  
to the ON position.  
• In the standby mode, this unit consumes a small amount of  
power to receive infrared-signals from the remote control.  
completely cut off power supply from the AC wall outlet.  
3
 
   
CONTROLS AND FUNCTIONS  
4 Remote control sensor  
0 SPEAKERS A/B  
Receives signals from the remote control.  
Turns on or off the speaker set connected to the  
SPEAKERS A and/or B terminals on the rear panel each  
time the corresponding button is pressed.  
5 INPUT selector and indicators  
Selects the input source you want to listen to.  
The input source indicators light up when the  
corresponding input sources are selected.  
A BASS  
Increases or decreases the low frequency response. The 0  
position produces a flat response.  
See page 13 for details.  
6 PURE DIRECT and indicator  
(AX-497 only)  
Allows you to listen to a source in the purest possible  
sound.  
The indicator above it lights up when this function is  
turned on.  
B TREBLE  
Increases or decreases the high frequency response. The 0  
position produces a flat response.  
See page 13 for details.  
C BALANCE  
7 TAPE MONITOR and indicator  
(AX-397 only)  
Allows you to listen to the sound played back on the tape  
deck connected to the TAPE terminals on the rear panel of  
this unit.  
When the tape deck is used for recording, you can also  
monitor the sound being recorded.  
The indicator above it lights up when this function is  
turned on.  
Adjusts the sound output balance of the left and right  
speakers to compensate for sound imbalances caused by  
speaker locations or listening room conditions.  
See page 13 for details.  
D LOUDNESS  
Retains a full tonal range at any volume level to  
compensates for the human ears’ loss of sensitivity to high  
and low-frequency ranges at low volume.  
See page 13 for details.  
Notes  
E REC OUT selector  
• When this function is on (the indicator lights up), TAPE (tape  
deck) cannot be selected with the INPUT selector.  
• To listen to the source selected with the INPUT selector, press  
again to turn off the function (the indicator turns off as a result).  
• When TAPE (tape deck) is selected with the INPUT selector,  
this function will not turn on even if TAPE MONITOR is  
pressed.  
(AX-497 only)  
Selects a source for recording to the MD recorder or the  
tape deck independently of the INPUT selector setting,  
allowing you to record the selected source while listening  
to another source.  
See page 14 for details.  
F VOLUME  
Controls the sound output level.  
This does not affect the REC OUT level.  
8 CD/DVD DIRECT AMP and indicator  
Allows you to listen to a CD or a DVD source in the  
purest sound.  
The indicator above it lights up when this function is  
turned on.  
Opening and closing the front panel  
door  
When you want to use the controls behind the front panel  
door, open the door by gently pressing on the lower part of  
the panel. Keep the door closed when not using these  
controls to protect the controls from dust, etc.  
9 PHONES jack  
Outputs audio for private listening with headphones.  
Press both SPEAKERS A and B switches on the front  
panel to release them outward to the OFF position.  
4
 
 
CONTROLS AND FUNCTIONS  
Remote control  
This section describes the function of each control on the  
remote control used to control this unit or a YAMAHA  
CD player, tuner, tape deck, etc. with the remote control  
capability.  
Controlling this unit  
1 Infrared signal transmitter  
Sends signals to this unit.  
2 POWER  
Turns on this unit.  
Note  
Some components may not be controlled by this remote control.  
Note  
1
This button is operational only when POWER on the front panel  
is pressed inward to the ON position.  
POWER  
3 STANDBY  
2
STANDBY  
Sets this unit to the standby mode.  
CD/DVD PHONO  
TUNER  
AUX  
3
4
Notes  
MD  
TAPE  
• This button is operational only when POWER on the front  
panel is pressed inward to the ON position.  
• In the standby mode, this unit consumes a small amount of  
power in order to receive infrared-signals from the remote  
control.  
u
+
PRESET  
d
VOLUME  
5
6
4 Input selector buttons  
Select the input source you want to listen to.  
A/B/C/D/E  
5 VOLUME +/–  
Controls the sound output level.  
This does not affect the REC OUT level.  
A/B  
DISPLAY  
w
e
f
DISPLAY  
7
8
DIR A  
DIR B  
REC  
DISC  
b
s
a
Controlling other components  
The functions of the buttons to control other YAMAHA  
components are the same as those of the corresponding  
buttons on those components. Refer to those components’  
instruction manuals for details.  
CD TAPE  
p
6 Tuner buttons  
Control various functions of the tuner.  
PRESET +/–  
Selects a preset station number (1 to 8).  
A/B/C/D/E  
Selects a preset station group (A to E).  
7 CD player / tape deck buttons  
Control various functions of the CD player or the tape  
deck.  
Notes  
• DIR B and A/B apply only to the double cassette tape deck.  
• Pressing DIR A will reverse the tape direction on the single  
cassette tape deck with the automatic reverse function.  
8 CD/TAPE selector switch  
Switches to control either CD player functions or tape  
deck functions.  
5
 
 
CONTROLS AND FUNCTIONS  
Installing batteries in the remote  
control  
Using the remote control  
The remote control transmits a directional infrared beam.  
Be sure to aim the remote control directly at the remote  
control sensor on the front panel of this unit during  
operation.  
1
3
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
PURE DIRECT  
CD/DVD DIRECT AMP  
ON  
OFF  
16  
20  
12  
VOLUME  
INPT  
26  
8
2
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
REC OUT  
FLAT  
CD/DVD  
1
1
1
1
1
1
1
T
APE  
MD  
AUX  
TUNER  
PHONO  
A
B
30dB  
2
2
4
2
4
2
4
2
2
2
10  
40  
4
STANDBY  
/ON  
3
3
3
3
3
3
3
9
8
4
4
4
4
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
6
60  
2
0
-dB  
Approximately 6 m (19.7 ft)  
30  
30  
POWER  
C
D
/
D
V
D
P
H
O
N
O
TUNER  
STANDBY  
MD  
TAPE  
AUX  
1
Open the battery compartment cover.  
u
+
PRESET  
d
VOLUME  
A/B/C/D/E  
MUTE  
A/B  
DISPLA  
Y
w
e
f
DISPLAY  
DIR  
A
DIR  
B
REC  
b
s
a
DISC  
CD  
TAPE  
p
2
Insert two supplied batteries  
(AAA, R03, UM-4) according to the polarity  
markings (+ and –) on the inside of the  
battery compartment.  
Handling the remote control  
The area between the remote control and this unit must  
be clear of large obstacles.  
Do not spill water or other liquids on the remote  
control.  
Do not drop the remote control.  
Do not leave or store the remote control in the  
following types of conditions:  
– places of high humidity, such as near a bath  
– places of high temperature, such as near a heater or  
a stove  
3
Close the cover back.  
Notes on batteries  
• Change all of the batteries if you notice the following  
conditions; the operation range of the remote control decreases,  
the indicator does not flash or its light becomes dim.  
• Use AAA, R03, UM-4 batteries.  
• Make sure that the polarities are correct. See the illustration  
inside the battery compartment.  
• Remove the batteries if the remote control is not used for an  
extended period of time.  
• Do not use old batteries together with new ones.  
• Do not use different types of batteries (such as alkaline and  
manganese batteries) together. Read the packaging carefully as  
these different types of batteries may have the same shape and  
color.  
– places of extremely low temperatures  
– dusty places  
Do not expose the remote control sensor to strong  
lighting, in particular, an inverter type fluorescent  
lamp; otherwise, the remote control may not work  
properly. If necessary, position this unit away from  
direct lighting.  
• We strongly recommend using alkaline batteries.  
• If the batteries have leaked, dispose of them immediately. Avoid  
touching the leaked material or letting it come into contact with  
clothing, etc. Clean the battery compartment thoroughly before  
installing new batteries.  
• Do not throw away batteries with general house waste; dispose  
of them correctly in accordance with your local regulations.  
6
 
       
CONTROLS AND FUNCTIONS  
Rear panel  
1
2
3
4
TUNER  
IN  
(PLAY)  
SPEAKERS  
AC OUTLETS  
+
+
TAPE  
OUT  
(REC)  
IMPEDANCE SELECTOR  
PHONO  
A
B
IN  
GND  
(PLAY)  
A
OR B: 4MIN  
A+B: 8MIN  
/
/
SPEAKER  
SPEAKER  
MD  
OUT  
(REC)  
AUX  
CD/DVD  
SWITCHED  
100W MAX.TOTAL  
A
OR B: 6MIN SPEAKER  
/
(U.S.A. model)  
5
6
1 PHONO jacks and GND terminal  
See page 8 for connection information.  
IMPEDANCE SELECTOR switch  
CAUTION  
2 Audio input/output jacks  
See page 8 for connection information.  
Do not change the IMPEDANCE SELECTOR switch  
while the power of this unit is turned on, as doing so may  
damage the unit.  
3 AC OUTLET(S)  
Use to supply power to your other audio/video  
components.  
If this unit fails to turn on, the IMPEDANCE SELECTOR  
switch may not be fully slid to either position. If this is the  
case, slide the switch all the way to either position when  
this unit’s power supply is completely cut off.  
Select the switch position (left or right) according to the  
impedance of the speakers in your system.  
4 AC power supply cord  
See page 10 for connection information.  
5 SPEAKERS terminals  
Connect one or two speaker sets.  
See page 8 for connection information.  
Switch  
Impedance level  
position  
Asia model  
6 IMPEDANCE SELECTOR  
See “IMPEDANCE SELECTOR switch” on this page.  
• If you use one set (A or B), the impedance of  
each speaker must be 8 or higher.  
• If you use two sets (A and B), the impedance  
of each speaker must be 16 or higher.  
Asia and General models only  
VOLTAGE SELECTOR is only applicable to the Asia and  
Canada model  
General models.  
You can use one set (A or B), and the  
impedance of each speaker must be 6 or  
higher.  
Right  
VOLTAGE SELECTOR  
Other models  
• If you use one set (A or B), the impedance of  
each speaker must be 6 or higher.  
• If you use two sets (A and B), the impedance  
of each speaker must be 12 or higher.  
• If you use one set (A or B), the impedance of  
each speaker must be 4 or higher.  
• If you use two sets (A and B), the impedance  
Left  
of each speaker must be 8 or higher.  
7
 
   
CONNECTIONS  
CONNECTIONS  
Connecting speakers and other components  
CAUTION  
Do not connect this unit or other components to the main power until all connections between components are  
complete.  
Do not let the bare speaker wires touch each other or do not let them touch any metal part of this unit. This could  
damage this unit and/or the speakers.  
All connections must be correct: L (left) to L, R (right) to R, “+” to “+” and “–” to “–”. If the connections are faulty,  
no sound will be heard from the speakers, and if the polarity of the speaker connections is incorrect, the sound will be  
unnatural and lack bass. Also, refer to the owner’s manual for each of your components.  
Use RCA type pin plug cables for audio/video units except speakers.  
Connect your turntable to the GND terminal to reduce noise in the signal. However, you may hear less noise without  
the connection to the GND terminal for some record players.  
Turntable  
Tuner  
Tape deck, etc.  
Speakers A  
Audio out  
Audio out  
Audio out  
Audio in  
R
L
R
L
R
L
+
+
GND  
R
L
TUNER  
IN  
(PLAY)  
SPEAKERS  
+
+
TAPE  
OUT  
(REC)  
PHONO  
A
B
IN  
GND  
(PLAY)  
MD  
OUT  
(REC)  
AUX  
CD/DVD  
+
+
R
L
R
L
R
R
L
L
Audio out  
Audio out  
Audio in  
Audio out  
CD player or  
DVD player  
VCR, etc.  
MD recorder,  
etc.  
Speakers B  
8
 
     
CONNECTIONS  
Connecting the banana plug  
1
Remove approximately 10 mm (3/8 in) of  
insulation from the end of each speaker  
cable and twist the exposed wires of the  
cable together to prevent short circuits.  
(With the exception of Asia, Korea, U.K. and  
Europe models)  
First, tighten the knob and then insert the banana plug into  
the end of the corresponding terminal.  
10 mm (3/8 in)  
Banana plug  
2
3
Unscrew the knob.  
Notes  
• One or two speaker sets can be connected to this unit. If you use  
only one speaker set, connect it to either the SPEAKERS A or B  
terminals.  
• Use speakers with the specified impedance shown on the rear  
panel of this unit.  
Red: positive (+)  
Black: negative (–)  
Insert one bare wire into the hole in the side  
of each terminal.  
Red: positive (+)  
Black: negative (–)  
4
Tighten the knob to secure the wire.  
Red: positive (+)  
Black: negative (–)  
9
 
CONNECTIONS  
Connecting the power supply cord  
VOLTAGE SELECTOR  
To an AC wall outlet  
AC power supply cord  
AC OUTLETS  
IMPEDANCE SELECTOR  
A
OR B: 4MIN  
A+B: 8MIN  
/
/
SPEAKER  
SPEAKER  
SWITCHED  
100W MAX.TOTAL  
A
OR B: 6MIN  
A+B: 12MIN  
/
/
SPEAKER  
SPEAKER  
(General model)  
Connecting the AC power supply cord  
Plug the power supply cord into the AC wall outlet after  
all other connections are complete.  
AC OUTLET(S) (SWITCHED)  
U.K. and Australia models ..................................... 1 outlet  
Korea model .............................................................. None  
Other models ........................................................ 3 outlets  
Use these outlets to connect the power cords from your  
other components to this unit. The power to the AC  
OUTLET(S) is controlled by POWER or STANDBY/ON  
on the front panel of this unit (or on the remote control).  
The outlet(s) supply power to any connected component  
whenever the power of this unit is turned on. For  
information on the maximum power (total power  
consumption of components), see “SPECIFICATIONS”  
VOLTAGE SELECTOR  
(Asia and General models only)  
The VOLTAGE SELECTOR on the rear panel of this unit  
must be set for your local main voltage BEFORE plugging  
the power supply cord into the AC wall outlet.  
Voltages are as follows:  
Asia model.......................... AC 220/230–240 V, 50/60 Hz  
General model ...... AC 110/120/220/230–240 V, 50/60 Hz  
10  
 
       
PLAYING AND RECORDING  
PLAYING AND RECORDING  
Playing a source  
3
Rotate the INPUT selector on the front panel  
(or press one of the input selector buttons on  
the remote control) to select the input source  
you want to listen to.  
Note  
As for AX-397 only, if the TAPE MONITOR indicator on the  
front panel lights up when you listen to a source, press TAPE  
MONITOR on the front panel to turn off the TAPE MONITOR  
function (the TAPE MONITOR indicator turns off as a result).  
The indicator of the selected input source lights up.  
INPUT  
POWER  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
or  
2
7
MD  
TAPE  
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
PURE DIRECT  
CD/DVD DIRECT AMP  
ON  
OFF  
Front panel  
Remote control  
VOLUME  
INPUT  
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
REC OUT  
FLAT  
1
CD/DVD  
1
1
1
1
1
1
TAPE  
MD  
AUX  
TUNER  
PHONO  
A
B
30dB  
2
2
4
2
4
2
4
2
2
2
4
10  
STANDBY  
/ON  
3
3
3
3
3
3
3
9
4
4
4
8
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
6
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
8
3
4
7
1,6  
Lights up  
POWER  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
4
Press SPEAKERS A and/or B on the front  
panel to select speakers A and/or B.  
8
6
MD  
TAPE  
3
SPEAKERS  
u
+
A
B
PRESET  
d
VOLUME  
A/B/C/D/E  
ON  
OFF  
A/B  
DISPLAY  
w
e
f
DISPLAY  
DIR  
A
DIR  
B
REC  
b
s
a
DISC  
Notes  
CD TAPE  
p
• Both SPEAKERS A and B can be selected.  
• If you listen with headphones, press both switches to release  
them outward to the OFF position.  
1
2
Set VOLUME on the front panel  
counterclockwise to the extreme end.  
5
6
Play the source.  
16  
Rotate VOLUME on the front panel (or press  
VOLUME +/– on the remote control) to adjust  
the sound output level.  
20  
12  
VOLUME  
26  
60  
8
40  
4
2
VOLUME  
0
+
VOLUME  
-dB  
or  
Press POWER on the front panel inward to  
the ON position.  
POWER  
Remote control  
Front panel  
ON  
OFF  
11  
 
     
PLAYING AND RECORDING  
7
Adjust the tonal quality by using the BASS,  
TREBLE, BALANCE and LOUDNESS controls  
or the CD/DVD DIRECT AMP switch on the  
front panel.  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
FLAT  
1
1
1
1
1
1
1
30dB  
2
2
2
2
2
2
2
4
10  
3
3
3
3
3
3
3
9
4
4
4
4
4
4
8
5
5
+
5
5
+
L
5
5
R
5
7
6
or  
CD/DVD DIRECT AMP  
Note  
As for AX-497 only, you can also adjust the tonal quality by  
using PURE DIRECT on the front panel.  
8
Press STANDBY/ON on the front panel again  
(or STANDBY on the remote control) to finish  
using this unit and set it to the standby  
mode.  
The STANDBY indicator lights up.  
STANDBY  
STANDBY  
/ON  
or  
Remote control  
Front panel  
STANDBY  
Lights up  
Note  
To completely cut off power supply from the AC wall outlet,  
press POWER on the front panel to release it outward to the OFF  
position.  
12  
 
PLAYING AND RECORDING  
Adjusting the LOUDNESS control  
Adjusting the tonal quality  
Retains a full tonal range at any volume level, thus  
compensating for the human ears’ loss of sensitivity to  
high and low-frequency ranges at low volume.  
Adjusting the BALANCE control  
Adjusts the sound output balance of the left and right  
speakers to compensate for sound imbalance caused by  
speaker locations or listening room conditions.  
CAUTION  
If the CD/DVD DIRECT AMP switch (or the PURE  
DIRECT switch for AX-497 only) is turned on with the  
LOUDNESS control set at a certain level, the input signals  
bypass the LOUDNESS control, resulting in a sudden  
increase in the sound output level. To prevent your ears or  
the speakers from being undesirably damaged, be sure to  
press the CD/DVD DIRECT AMP switch (or the PURE  
DIRECT switch for AX-497 only) AFTER lowering the  
sound output level or AFTER checking that the  
BALANCE  
1
1
2
2
3
3
4
4
L
5
5
R
Using the CD/DVD DIRECT AMP switch  
Routes input signals from your CD or DVD player  
directly to the specially built-in amplifier for the CD or  
DVD player. As a result, the input signals bypass the  
INPUT selector and the BASS, TREBLE, BALANCE and  
LOUDNESS controls (and the TAPE MONITOR switch  
for AX-397 only) and then sent to the power amplifier,  
thus eliminating any alterations to the CD or DVD signals  
and creating the purest possible sound.  
LOUDNESS control is properly set.  
1
Set the LOUDNESS control to the FLAT  
position.  
LOUDNESS  
FLAT  
1
30dB  
2
4
10  
3
9
8
Lights up  
CD/DVD DIRECT AMP  
5
7
6
2
Rotate VOLUME on the front panel (or press  
VOLUME +/– on the remote control) to set the  
sound output level to the loudest listening  
level that you would listen to.  
Using the PURE DIRECT switch  
(AX-497 only)  
Routes input signals from your audio sources. As a result,  
the input signals bypass the BASS, TREBLE, BALANCE  
and LOUDNESS controls, thus eliminating any alterations  
to the audio signals and creating the purest possible sound.  
VOLUME  
+
VOLUME  
or  
Lights up  
PURE DIRECT  
Front panel  
Remote control  
Note  
As for AX-497 only, if both the CD/DVD DIRECT AMP and the  
PURE DIRECT switches are turned on, only the CD/DVD  
DIRECT AMP switch will function.  
3
Rotate the LOUDNESS control until the  
desired volume is obtained.  
LOUDNESS  
Adjusting the BASS and TREBLE  
controls  
Adjusts the high and low frequency response.  
FLAT  
1
30dB  
10  
2
4
3
9
8
5
7
6
BASS  
Increases or decreases the low frequency response.  
TREBLE  
Increases or decreases the high frequency response.  
BASS  
TREBLE  
1
1
1
1
2
2
2
4
2
4
3
3
3
3
4
4
5
5
+
5
5
+
13  
 
           
PLAYING AND RECORDING  
Recording a source to a tape  
or an MD  
4
Rotate VOLUME on the front panel (or press  
VOLUME +/– on the remote control) to adjust  
the sound output level.  
Notes  
VOLUME  
+
VOLUME  
• The VOLUME, BASS, TREBLE, BALANCE and  
LOUDNESS controls and the CD/DVD DIRECT AMP switch  
(and the PURE DIRECT switch for AX-497 only) have no  
effect on the source being recorded.  
or  
• Check the copyright laws in your country to record from  
records, CDs, radio, etc. Recording copyright-protected  
material may infringe on copyright laws.  
Remote control  
Front panel  
AX-497  
5
6
Begin recording on the tape deck or the MD  
recorder.  
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
PURE DIRECT  
CD/DVD DIRECT AMP  
ON  
OFF  
VOLUME  
INPUT  
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
REC OUT  
Rotate the INPUT selector on the front panel  
(or press TAPE or MD on the remote control)  
to select TAPE or MD and then monitor the  
sound being recorded on the tape deck or  
the MD recorder.  
FLAT  
1
CD/DVD  
1
1
1
1
1
1
TAPE  
MD  
AUX  
TUNER  
PHONO  
A
B
30dB  
2
2
4
2
4
2
4
2
2
2
4
10  
STANDBY  
/ON  
3
3
3
3
3
3
3
9
4
4
4
8
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
6
3,6  
1
4
INPUT  
POWER  
1
Rotate the REC OUT selector on the front  
panel to select the source you want to  
record.  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
or  
MD  
TAPE  
Remote control  
Front panel  
REC OUT  
CD/DVD  
TAPE  
MD  
AUX  
TUNER  
PHONO  
Note  
Selecting another source with the INPUT selector on the front  
panel (or the corresponding input selector button on the remote  
control) while recording is in progress will not affect the  
recording.  
2
3
Play the source.  
Rotate the INPUT selector on the front panel  
(or press one of the input selector buttons on  
the remote control) to select the input source  
you want to listen to.  
INPUT  
POWER  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
or  
MD  
TAPE  
Front panel  
Remote control  
14  
 
   
PLAYING AND RECORDING  
AX-397  
4
Begin recording on the tape deck or the MD  
recorder.  
y
STANDBY  
POWER  
AUX  
MD  
TAPE  
CD/DVD  
TUNER  
PHONO  
TAPE MONITOR  
CD/DVD DIRECT AMP  
If the 3-head tape deck is used for recording, you can monitor the  
ON  
OFF  
sound of recording by pressing TAPE MONITOR.  
VOLUME  
INPUT  
PHONES  
SPEAKERS  
BASS  
TREBLE  
BALANCE  
LOUDNESS  
FLAT  
1
1
1
1
1
1
1
A
B
30dB  
2
2
4
2
4
2
4
2
2
2
4
10  
STANDBY  
/ON  
3
3
3
3
3
3
3
9
4
4
4
8
ON  
OFF  
5
5
+
5
5
+
L
5
5
R
5
7
6
2
3
1
2
Play the source.  
Rotate the INPUT selector on the front panel  
(or press one of the input selector buttons on  
the remote control) to select the input source  
you want to listen to.  
INPUT  
POWER  
or  
STANDBY  
CD/DVD PHONO  
TUNER  
AUX  
MD  
TAPE  
Remote control  
Front panel  
Note  
You cannot select any input source while the TAPE MONITOR  
indicator on the front panel lights up.  
3
Rotate VOLUME on the front panel (or press  
VOLUME +/– on the remote control) to adjust  
the sound output level.  
VOLUME  
+
VOLUME  
or  
Remote control  
Front panel  
15  
 
TROUBLESHOOTING  
TROUBLESHOOTING  
Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below or  
if the instructions below do not help, set this unit to the standby mode, disconnect the power cord, and contact the nearest  
authorized YAMAHA dealer or service center.  
General  
Refer to  
page  
Problem  
Cause  
Remedy  
This unit fails to turn  
on.  
The power supply cord is not connected or Connect the power supply cord firmly.  
the plug is not completely inserted.  
The impedance setting is incorrect.  
Set the impedance to match your speakers.  
The protection circuitry has been activated Check that the speaker wires are not touching each  
because of a short circuit, etc. other and then turn the power of this unit back on.  
The IMPEDANCE SELECTOR switch on Set the IMPEDANCE SELECTOR switch to either  
the rear panel is not set to either end.  
end when the power of this unit is turned off.  
This unit has been exposed to a strong  
external electric shock (such as lightning  
or strong static electricity).  
Set this unit to the standby mode, disconnect the  
power supply cord, plug it back in after 30 seconds,  
then use it normally.  
No sound  
Incorrect input or output cable  
connections.  
Connect the cables properly. If the problem persists,  
the cables may be defective.  
No appropriate input source has been  
selected.  
Select an appropriate input source with the INPUT  
selector on the front panel (or one of the input  
selector buttons on the remote control).  
The TAPE MONITOR function is turned  
on.  
Turn off the TAPE MONITOR function.  
The SPEAKERS A/B switches are not set Set the corresponding SPEAKERS A or B switch to  
properly.  
the ON position.  
Speaker connections are not secure.  
Secure the connections.  
The sound suddenly  
goes off.  
The protection circuitry has been activated Check that the IMPEDANCE SELECTOR setting is  
because of a short circuit, etc.  
correct.  
Check that the speaker wires are not touching each  
other and then turn the power of this unit back on.  
Only the speaker on  
one side can be  
heard.  
Incorrect cable connections.  
Connect the cables properly. If the problem persists,  
the cables may be defective.  
Incorrect setting for the BALANCE  
control.  
Set the BALANCE control to the appropriate  
position.  
There is a lack of bass The + and – wires are connected in  
Connect the speaker wires to the correct + and –  
phase.  
and no ambience.  
reverse at the amplifier or the speakers.  
A “humming” sound  
can be heard.  
Incorrect cable connections.  
Connect the audio plugs firmly. If the problem  
persists, the cables may be defective.  
No connection from the turntable to the  
GND terminal.  
Make the GND connection between the turntable and  
this unit.  
The volume level is  
low while playing a  
record.  
The record is being played on a turntable  
with an MC cartridge.  
The turntable should be connected to this unit through  
the MC head amplifier.  
The volume level  
cannot be increased,  
or the sound is  
distorted.  
The component connected to the TAPE  
OUT or the MD OUT terminals of this  
unit is turned off.  
Turn on the power of the component.  
16  
 
 
TROUBLESHOOTING  
The sound is  
The power of this unit is turned off, or this Turn on the power of this unit.  
unit is set to the standby mode.  
degraded when  
listening with the  
headphones  
connected to the CD  
player or the tape  
deck connected to  
this unit.  
The sound level is  
low.  
The LOUDNESS control is functioning.  
Set the LOUDNESS control to the FLAT position.  
The input source  
cannot be changed  
although the INPUT  
selector is rotated.  
The CD/DVD DIRECT AMP switch is  
turned on.  
Turn off the CD/DVD DIRECT AMP switch.  
The TAPE MONITOR function is turned  
on.  
Turn off the TAPE MONITOR function.  
Using the BASS,  
TREBLE, BALANCE  
and LOUDNESS  
controls does not  
affect the tonal  
quality.  
The CD/DVD DIRECT AMP switch (or  
the PURE DIRECT switch for AX-497  
only) is turned on.  
The CD/DVD DIRECT AMP switch (or the PURE  
DIRECT switch for AX-497 only) must be turned off  
to use those controls.  
Remote control  
Refer to  
page  
Problem  
Cause  
Remedy  
The remote control  
does not work nor  
function properly.  
Wrong distance or angle.  
The remote control will function within a maximum  
range of 6 m (19.7 ft) and no more than 30 degrees  
off-axis from the front panel.  
Direct sunlight or lighting (from an  
inverter type of fluorescent lamp, etc.) is  
striking the remote control sensor of this  
unit.  
Reposition this unit.  
The batteries are weak.  
Replace all batteries.  
17  
 
SPECIFICATIONS  
SPECIFICATIONS  
POWER SECTION  
• Minimum RMS Output Power  
CONTROL SECTION  
• Input Sensitivity/Input Impedance  
(8 , 20 Hz to 20 kHz, 0.019% THD)  
PHONO .................................................................. 2.5 mV/47 kΩ  
CD, etc. .................................................................. 150 mV/47 kΩ  
[AX-497] .............................................................. 85 W + 85 W  
[AX-397] .............................................................. 60 W + 60 W  
(6 , 20 Hz to 20 kHz, 0.038% THD)  
[AX-497] .......................................................... 100 W + 100 W  
[AX-397] .............................................................. 70 W + 70 W  
• Output Level/Output Impedance  
REC OUT  
[AX-497] ............................................... 195 mV/1.6 kor less  
[AX-397] ............................................... 165 mV/1.6 kor less  
• Dynamic Power (IHF) (8/6/4/2 )  
• Headphone Output/Impedance  
[AX-497] ....................................................... 130/150/185/220 W  
[AX-397] ....................................................... 100/120/140/150 W  
CD, etc. (Input 1 kHz, 150 mV, 8 , 0.019% THD)  
[AX-497] ................................................................ 0.3 V/680 Ω  
[AX-397] .............................................................. 0.25 V/680 Ω  
• Maximum Output Power  
(1 kHz, 0.7% THD, 4 ) [U.K. and Europe models only]  
[AX-497] ......................................................................... 120 W  
[AX-397] ........................................................................... 95 W  
(1 kHz, 10% THD, 8/6 )  
• Channel Separation  
CD, etc. (5.1 kinput shorted, 1/10 kHz) ....... 65/50 dB or more  
• Tone Control Characteristics  
BASS  
[AX-497]  
Boost/Cut (20 Hz) ........................................................... ±10 dB  
Turnover Frequency ........................................................ 350 Hz  
TREBLE  
[Asia, General, China and Korea models only] .... 130/150 W  
[AX-397]  
[Asia, General and China models only] ................ 100/110 W  
Boost/Cut (20 kHz) ......................................................... ±10 dB  
Turnover Frequency ....................................................... 3.5 kHz  
• IEC Output Power [U.K. and Europe models only]  
(1 kHz, 0.019% THD, 8 )  
• Continuous Loudness Control  
[AX-497] ......................................................................... 100 W  
Attenuation (1 kHz) ........................................................... –30 dB  
[AX-397] ........................................................................... 75 W  
• Power Band Width  
GENERAL  
• Power Supply  
[AX-497] (0.04% THD, 42.5 W, 8 ) .................10 Hz to 50 kHz  
[AX-397] (0.04% THD, 30 W, 8 ) ....................10 Hz to 50 kHz  
[U.S.A. and Canada models] ............................. AC 120 V, 60 Hz  
[Asia model] .................................. AC 220/230–240 V, 50/60 Hz  
[General model] ............... AC 110/120/220/230–240 V, 50/60 Hz  
[China model] .................................................... AC 220 V, 50 Hz  
[Korea model] (AX-497 only)............................ AC 220 V, 60 Hz  
[Australia model] ............................................... AC 240 V, 50 Hz  
[U.K. and Europe models] ................................. AC 230 V, 50 Hz  
• Damping Factor  
20 Hz to 20 kHz, 8 ..................................................240 or more  
• Maximum Input Signal  
PHONO (1 kHz, 0.003% THD) .......................... 115 mV or more  
CD, etc. (1 kHz, 0.5% THD) ................................... 2.2 V or more  
• Frequency Response  
• Power Consumption  
CD, etc. (20 Hz to 20 kHz) .......................................... 0 ± 0.5 dB  
CD/DVD DIRECT AMP ON (10 Hz to 100 kHz) ...... 0 ± 1.0 dB  
[AX-497]  
[U.S.A. and Canada models] ............................. 220 W, 300 VA  
[Asia model] .................................................................... 190 W  
[Other models] ................................................................. 220 W  
[AX-397] ............................................................................ 170 W  
• RIAA Equalization Deviation  
PHONO ........................................................................... ± 0.3 dB  
• Total Harmonic Distortion  
PHONO to REC OUT  
(20 Hz to 20 kHz, 3 V) .......................................... 0.003% or less  
CD, etc. to SP OUT  
• Standby Power Consumption  
[Asia and General models]  
(110/120 V).........................................................................1.1 W  
(220/230-240 V) .................................................................2.7 W  
[Other models] ..................................................................... 1.1 W  
(The power consumption is 0 W when the POWER switch is  
released outward to the OFF position.)  
(20 Hz to 20 kHz, 42.5 W, 8 ) ............................. 0.009% or less  
• Signal to Noise Ratio (IHF-A Network)  
PHONO (input shorted) ..........................................88 dB or more  
CD (input shorted)  
CD/DVD DIRECT AMP ON ............................ 110 dB or more  
• Maximum Power Consumption [General models only]  
(1 kHz, 6 , 10% THD)  
• Residual Noise (IHF-A Network)  
[AX-497] ......................................................................... 490 W  
[AX-397] ......................................................................... 400 W  
[AX-497]  
CD/DVD DIRECT AMP ON .......................................... 35 µV  
PURE DIRECT ON ......................................................... 90 µV  
[AX-397]  
CD/DVD DIRECT AMP ON .......................................... 35 µV  
CD/DVD DIRECT AMP OFF ....................................... 100 µV  
• AC Outlets  
[U.K. and Australia models] ............... 1 (Total 100 W maximum)  
[Korea model] ....................................................................... None  
[General model]......................................3 (Total 50 W maximum)  
[Other models] .................................... 3 (Total 100 W maximum)  
• Dimensions (W x H x D) ................................. 435 x 151 x 390 mm  
(17-1/8” x 5-15/16” x 15-11/32”)  
• Weight  
[AX-497] ...................................................... 9.1 kg (20 lbs. 1 oz.)  
[AX-397] ...................................................... 8.3 kg (18 lbs. 5 oz.)  
* Specifications are subject to change without notice.  
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