2
r
t
y
w u
!2 !2
e
y
u!5!5 i t
!3q !4 !4!1o !0
qPower button
Turns the power to the unit on or off.
w[POWER] indicator
Turns on when the power is on.
e[ALERT] indicator
Lights when a problem in the device is detected.
Lights until the cause of the problem is solved.
r[USB] indicator
Lights when a compatible USB memory device is
inserted into the [USB] terminal.
Flashes when the USB device is being accessed.
t[CLIP/LIMIT] indicators
Lights when the limiter is operating to protect the
amplifier and the speaker, or the input signal over-
flows in the digital circuit or clips at the amplifier out-
put.
y[SIGNAL] indicators
Lights when the output is larger than -60 dB of maxi-
mum output level (8 ohms).
u[PROTECT] indicators
Lights when the protection circuit is operating.
iDisplay
Displays condition of the PX amplifier and setting
menus.
o[MENU] key
Press the key to move to the top MENU screen.
!0 [ ] (Back) key
Press this key to move up to the immediately higher
menu level or previous display. Press and briefly hold
the key to return the HOME screen.
!1 Main knob
Rotate the knob to change the values of parameters
and move the position of cursor. Press the knob to
actually enter the set value or enable the selected item.
!2 [A]/[B] keys
Press the key to switch the channel (A or B) for oper-
ating the corresponding parameters.
!3 [USB] terminal
Insert a USB memory device to read/load the data
from/to the PX amplifier.
!4 Volume knob
Adjust the level from -∞ dB to 0 dB.
!5 Intake ports
Air intakes for the cooling fan. Make sure to not block
the air intakes.
NOTE
Details of the problem are shown on the display (i).
Selecting the icon on the HOME screen with the
main knob calls up the operating log.
NOTICE
Do not unplug the USB device while the [USB] indi-
cator is flashing. Data in the USB memory may be
corrupted or lost.
NOTE
Press the main knob and [A] key to change the mute
status of channel A. Press the main knob and [B] key
to change the mute status of channel B.
NOTICE
When the terminal is not used, attach the supplied
USB cap to protect the terminal.
NOTE
• The settings can be changed so that the display and
indicators turn off automatically when panel is not
operated (Black-out mode). Refer to PX10/PX8/PX5/
PX3 Reference Manual for instructions on the Black-
out mode.
• For the protection of the display, even if the Black-out
mode is not active, the display automatically turns off if
the PX amplifier has not been operated for 20 min-
utes. To turn on the display again, simply press any
key on the front panel or rotate the main knob.
!6 [INPUT] A/B connectors
The following two type input connectors are provided
for both channels A and B.
• XLR input jack
• Phones input jack
!7 [SPEAKERS] A/B terminals
Output terminals to speakers. The following three
types are available:
• Neutrik NL4MD SpeakON output connector
• Binding post output connector
• Phones output jack
Wiring
Binding post connector
Remove about 15 mm of
insulation from the end of
each speaker cable, insert
the bare wire into the open-
ing in the terminal base,
and then tighten the termi-
nal knob. Make sure that
the bare wire ends do not
jut out from the terminals
and touch the chassis.
SpeakON connector
Insert the SpeakON cable
plug into the connector, and
turn it to the right to lock it.
!8 AC IN connector
Connect the supplied AC power cord. First connect the
AC power cord to the connector on the amplifier, and
then plug it into an appropriate AC power outlet.
Secure the AC power cord with the AC plug clamp to
prevent accidental disconnection from the connector.
!9 Exhaust ports
Exhaust vents for the cooling fan.
Make sure to not block the exhaust vents.
NOTE
Each XLR input jack and phones input jack are con-
nected in parallel. Only one of the jacks can be used
as an input jack at one time; the signals from the
jacks cannot be mixed.
CAUTION
Do not touch the terminals or metal parts
of cords connected to the terminal.
NOTICE
• If connecting speakers to multiple connectors of a
same channel results in a parallel connection,
make sure that the total impedance of the speakers
to be connected is not excessively low.
• The PX amplifier adopts BTL (Balanced Trans-
former Less) amplifier circuits. Connecting both ter-
minals of channels A and B and contact between
the terminal and the chassis may cause a failure or
malfunction. Be careful to not connect or contact
the two by mistake.
Channel A
Neutrik
NL4 PX amplifier
1+ A+
1– A–
2+ B+
2– B–
Channel B
Neutrik
NL4 PX amplifier
1+ B+
1– B–
2+ (not connected)
2– (not connected)
Installing the AC plug clamp
The Yamaha Pro Audio website provides a FAQ (a list of frequently asked questions, with answers).
https://www.yamahaproaudio.com/
* Refer also to the section “Troubleshooting” in the PX10/PX8/PX5/PX3 Reference Manual.
* If any specific problem should persist, please contact your Yamaha dealer.
Symptom Possible causes Possible solution
[PROTECT] indicator lights
and an “OUTPUT CUR-
RENT OVER” message
appears on the display.
There is a short at the speaker terminal, ampli-
fier terminal or wire, and the circuit is protected.
Turn off and check for a short at thre speaker ter-
minal or amplifier, wire, etc., and turn on again.
Since the impedance of the connected speaker
is too low and the amplifier is overloaded, circuit
protection is engaged.
Check that the speaker has not been damaged
and that total impedance is not excessively
low, and review the speaker connection.
[PROTECT] indicator
lights and a “AMP TEMP
TOO HIGH” message
appears on the display.
Because the internal temperature is too high,
thermal protection is engaged to protect the cir-
cuit.
Check the amplifier ventilation conditions and
take appropriate measures to improve the air-
flow around the amplifier. Leave the amplifier
off until the internal temperature goes down,
and then turn on again.
[CLIP/LIMIT] indicator
lights.
Because the input signal is excessive or the
output exceeds the rated voltage, the signal is
clipped or the limiter is engaged to protect the
circuit.
Lower the output level of the device connected
to the input connector, or lower the volume of
the amplifier.
Power does not turn on.
The power supply voltage of the connected out-
let is significantly different from the rated range. Check the source voltage.
Because the internal temperature is too high,
thermal protection is engaged to protect the cir-
cuit.
Check the amplifier ventilation conditions and
take appropriate measures to improve the air-
flow around the amplifier. Leave the amplifier
off until the internal temperature goes down,
and then turn on again.
Sound from speakers is
distorted.
The input level exceeds the setting of the input
sensitivity.
Adjust the input sensitivity to match the input
level.
The sound is muffled. No
high-frequency sound.
The sound is filtered. The filter condition can be
checked in the HOME screen.
Change the setting of the filters in the MENU
screen (TUNING screen).
No sound from speakers.
Cables are not connected appropriately.
Connect input connectors and output connec-
tors properly. Refer to the “Setup” section on
the front side for connection instructions.
Level has declined with the volume. Adjust the volume.
The mute is on. When the mute is on, “MUTE”
appears in the HOME screen. Turn off the mute.
The protection circuit is engaged and the output
is muted. When the protection circuit is
engaged, the [PROTECTION] indicator lights.
Identify what is causing the protection circuit to
engage and solve it.
The panel controls cannot
be operated. The panel lock is turned on.
Turn off the panel lock. Refer to PX10/PX8/
PX5/PX3 Reference Manual for instructions on
turning off the panel lock.
PRECAUTIONS
PLEASE READ CAREFULLY BEFORE
PROCEEDING
Please keep this manual in a safe
place for future reference.
WARNING
Always follow the basic precautions listed below
to avoid the possibility of serious injury or even
death from electrical shock, short-circuiting,
damages, fire or other hazards. These precautions
include, but are not limited to, the following:
Power supply/power cord
• Do not place the power cord near heat sources such as
heaters or radiators, and do not excessively bend or
otherwise damage the cord, place heavy objects on it, or
place it in a position where anyone could walk on, trip
over, or roll anything over it.
• Only use the voltage specified as correct for the device.
The required voltage is printed on the name plate of the
device.
• Use only the supplied power cord/plug.
• Check the electric plug periodically and remove any dirt
or dust which may have accumulated on it.
• When setting up the device, make sure that the AC outlet
you are using is easily accessible. If some trouble or
malfunction occurs, immediately turn off the power switch
and disconnect the plug from the outlet. Even when the
power switch is turned off, as long as the power cord is
not unplugged from the wall AC outlet, the device will not
be disconnected from the power source.
• Remove the electric plug from the outlet when the device
is not to be used for extended periods of time, or during
electrical storms.
• Be sure to connect to an appropriate outlet with a
protective grounding connection.
Do not open
• This device contains no user-serviceable parts. Do not
open the device or attempt to disassemble the internal
parts or modify them in any way. If it should appear to be
malfunctioning, discontinue use immediately and have it
inspected by qualified Yamaha service personnel.
Water warning
• Do not expose the device to rain, use it near water or in
damp or wet conditions, or place on it any containers
(such as vases, bottles or glasses) containing liquids
which might spill into any openings. If any liquid such as
water seeps into the device, turn off the power
immediately and unplug the power cord from the AC
outlet. Then have the device inspected by qualified
Yamaha service personnel.
• Never insert or remove an electric plug with wet hands.
Hearing loss
• Do not use speakers for a long period of time at a high or
uncomfortable volume level, since this can cause
permanent hearing loss. If you experience any hearing
loss or ringing in the ears, consult a physician.
• When turning on the AC power in your audio system,
always turn on the device LAST, to avoid hearing loss and
speaker damage. When turning the power off, the device
should be turned off FIRST for the same reason.
Fire warning
• Do not place any burning items or open flames near the
device, since they may cause a fire.
If you notice any abnormality
• If any of the following problems occur, immediately turn
off the power switch and disconnect the electric plug from
the outlet.
- The power cord or plug becomes frayed or damaged.
- Unusual smells or smoke are emitted.
- Some object has been dropped into the device.
- There is a sudden loss of sound during use of the
device.
- Cracks or other visible damage appear on the device.
Then have the device inspected or repaired by qualified
Yamaha service personnel.
• If this device should be dropped or damaged,
immediately turn off the power switch, disconnect the
electric plug from the outlet, and have the device
inspected by qualified Yamaha service personnel.
CAUTION
Always follow the basic precautions listed below
to avoid the possibility of physical injury to you or
others, or damage to the device or other property.
These precautions include, but are not limited to,
the following:
Power supply/power cord
• When removing the electric plug from the device or an
outlet, always hold the plug itself and not the cord. Pulling
by the cord can damage it.
Location
• Do not place the device in an unstable position where it
might accidentally fall over and cause injuries.
• Do not block the vents. This device has ventilation holes
at the front/rear to prevent the internal temperature from
becoming too high. In particular, do not place the device
on its side or upside down. Inadequate ventilation can
result in overheating, possibly causing damage to the
device(s), or even fire.
• When installing the device:
- Do not cover it with any cloth.
- Do not install it on a carpet or rug.
- Make sure the top surface faces up; do not install on its
sides or upside down.
- Do not use the device in a confined, poorly-ventilated
location.
Inadequate ventilation can result in overheating, possibly
causing damage to the device(s), or even fire. Make sure
that there is adequate space around the device: at least
40 cm above, 10 cm at the sides and 10 cm behind.
• Do not place the device in a location where it may come
into contact with corrosive gases or salt air. Doing so may
result in malfunction.
• Keep the device out of reach of children, to keep them
from putting their fingers into openings on the equipment
and accidentally being injured.
• Before moving the device, remove all connected cables.
• If the device is mounted in an EIA standard rack, carefully
read the section “Rack Mounting” in the PX10/PX8/PX5/
PX3 Reference Manual. Inadequate ventilation can result
in overheating, possibly causing damage to the
device(s), malfunction, or even fire.
Connections
• Before connecting the device to other devices, turn off the
power for all devices. Also, before turning the power of all
devices on or off, make sure that all volume levels are set
to the minimum. Failing to do so may result in electric
shock, hearing loss, or equipment damage.
• Use only speaker cables for connecting speakers to the
speaker jacks. Use of other types of cables may result in
fire.
Maintenance
• Remove the power plug from the AC outlet when cleaning
the device.
Handling caution
• Do not insert your fingers or hands in any gaps or
openings on the device (vents).
• Avoid inserting or dropping foreign objects (paper,
plastic, metal, etc.) into any gaps or openings on the
device (vents). If this happens, immediately turn off the
power unplug the power cord from the AC outlet, and
have the device inspected by qualified Yamaha service
personnel.
• Do not rest your weight on the device or place heavy
objects on it, and avoid use excessive force on the
buttons, switches or connectors to prevent injuries.
PA_en_7
NOTICE
To avoid the possibility of malfunction/ damage to the prod-
uct, damage to data, or damage to other property, follow
the notices below.
Handling and maintenance
• Do not use the device in the vicinity of a TV, radio, AV
equipment, mobile phone, or other electric devices. Oth-
erwise, the device, TV, or radio may generate noise.
• Do not expose the device to excessive dust or vibration,
or extreme cold or heat (such as in direct sunlight, near a
heater, or in a car during the day), in order to prevent the
possibility of panel disfiguration, unstable operation, or
damage to the internal components.
• Do not place vinyl, plastic or rubber objects on the
device, since this might discolor the panel.
• The amplifier uses forced-air cooling fans that draw air in
from the front and exhaust it through the rear. Please be
sure that you do not block the air intakes or exhaust vents.
• When cleaning the device, use a dry and soft cloth. Do
not use paint thinners, solvents, cleaning fluids, or chemi-
cal-impregnated wiping cloths.
• Condensation can occur in the device due to rapid, dras-
tic changes in ambient temperature—when the device is
moved from one location to another, or air conditioning is
turned on or off, for example. Using the device while con-
densation is present can cause damage. If there is reason
to believe that condensation might have occurred, leave
the device for several hours without turning on the power
until the condensation has completely dried out.
• Do not use this device for any purpose other than driving
loudspeakers.
• Always turn the power off when the device is not in use.
• Rapidly turning the unit on and off in succession can
cause it to malfunction. After turning the unit off, wait for
more than five seconds before turning it on again.
Connectors
• XLR-type connectors are wired as follows (IEC60268
standard): pin 1: ground, pin 2: hot (+), and pin 3: cold (-).
• Use only Neutrik NL4FC plugs for connecting Speakon
connectors.
Information
About functions/data bundled with the device
• The bitmap fonts used in this instrument have been pro-
vided by and are the property of Ricoh Co., Ltd.
About this manual
• The illustrations and LCD screens as shown in this manual
are for instructional purposes only.
• The company names and product names in this manual
are the trademarks or registered trademarks of their
respective companies.
• Software may be revised and updated without prior
notice.
• The Yamaha Pro Audio website provides a FAQ (a list of
frequently asked questions, with answers).
https://www.yamahaproaudio.com/
• European models
Purchaser/User Information specified in EN55103-2:2009.
Conforms to Environments: E1, E2, E3 and E4
(class I hokuo)
Yamaha cannot be held responsible for damage caused
by improper use or modifications to the device, or data
that is lost or destroyed.
In Finland: Laite on liitettävä suojamaadoituskoskettimilla
varustettuun pistorasiaan.
In Norway: Apparatet må tilkoples jordet stikkontakt.
In Sweden: Apparaten skall anslutas till jordat uttag.
(3 wires)
(weee_eu_en_01)
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT. The wires in this mains lead are coloured in accor-
dance with the following code:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying
the terminals in your plug proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the plug which is marked by the
letter E or by the safety earth symbol or colored GREEN or GREEN-and-YELLOW.
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
Information for Users on Collection and Disposal of Old Equipment
This symbol on the products, packaging, and/or accompanying documents means that used electrical
and electronic products should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products, please take them to applicable collection
points, in accordance with your national legislation and the Directives 2002/96/EC.
By disposing of these products correctly, you will help to save valuable resources and prevent any
potential negative effects on human health and the environment which could otherwise arise from
inappropriate waste handling.
For more information about collection and recycling of old products, please contact your local munici-
pality, your waste disposal service or the point of sale where you purchased the items.
[For business users in the European Union]
If you wish to discard electrical and electronic equipment, please contact your dealer or supplier for further information.
[Information on Disposal in other Countries outside the European Union]
This symbol is only valid in the European Union. If you wish to discard these items, please contact your local authorities or
dealer and ask for the correct method of disposal.
*1 Device operation has been confirmed within +/- 10% of the rated power supply voltage.
* The contents of this manual apply to the latest specifications as of the printing date. To obtain the latest manual, access the
Yamaha website then download the manual file.
PX10 PX8 PX5 PX3
Output Power 120 V 60 Hz, 220 V-240 V 50 Hz/60 Hz
1 kHz, non-clip,
20 msec burst,
both channels driven
8Ω 1000 W × 2 800 W × 2 500 W × 2 300 W × 2
4Ω 1200 W × 2 1050 W × 2 800 W × 2 500 W × 2
2Ω 700 W × 2 600 W × 2 500 W × 2 300 W × 2
1 kHz, non-clip,
20 msec burst
8Ω/Power Boost mode — — 800 W × 1 600 W × 1
4Ω/Power Boost mode — — 1400 W × 1 1000 W × 1
Output Power 100 V 50 Hz/60 Hz
1 kHz, non-clip,
20 msec burst,
both channels driven
8Ω 1000 W × 2 800 W × 2 500 W × 2 300 W × 2
4Ω 1200 W × 2 1050 W × 2 800 W × 2 500 W × 2
2Ω 700 W × 2 600 W × 2 500 W × 2 300 W × 2
1 kHz, non-clip,
20 msec burst
8Ω/Power Boost mode — — 800 W × 1 600 W × 1
4Ω/Power Boost mode — — 1200 W × 1 1000 W × 1
Amplifier Type (Output Circuitry) Class D, balanced output circuit (BTL)
THD+N 1 kHz, 10 W 0.1%
1 kHz, half power 0.3%
Frequency Response
1 W, 8Ω, 20 Hz to 20 kHz ±1.0 dB
Crosstalk
Half power, 8Ω, 1 kHz, vol. max., input 150Ω shunt
-60 dB
S/N Ratio A-weighted, 8Ω, gain setting = +14 dBu 101 dB 101 dB 100 dB 100 dB
Maximum Input Voltage +24 dBu
Input Impedance 20 kΩ (Balanced), 10 kΩ (Unbalanced)
AC Power Requirement
Depending on area of purchase;
100 V 50 Hz/60 Hz, 120 V 60Hz,
220 V-240 V 50 Hz/60 Hz
*1
Power
Consumption
1/8 MAX power, 4Ω, pink noise at all channels 310 W 280 W 230 W 160 W
Idle, 4Ω 60 W 60 W 55 W 55 W
Operating Temperature 0°C to +40°C
Storage Temperature -20°C to +60°C
Dimensions (W × H × D) 480 × 88 × 388 mm
(18.90 × 3.46 × 15.28 inch)
Net Weight 7. 4 k g
(16.31 lbs)
7. 2 k g
(15.87 lbs)
6.9 kg
(15.21 lbs)
6.9 kg
(15.21 lbs)
This mark indicates a dangerous electrically live terminal. When
connecting an external wire to this terminal, it is necessary either to
have “a person who have received appropriate guidance on handling”
make the connection or to use leads or a cord that have been manufac-
tured in such a way that the connection can be made simply and with-
out problem.
© 2016 Yamaha Corporation
Published 04/2023
IPES-C0
Yamaha Pro Audio global website
https://www.yamahaproaudio.com/
Yamaha Downloads
https://download.yamaha.com/