Yamaha WF41880 User Manual
POWER AMPLIFIER
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OWNER’S MANUAL
BEDIENUNGSANLEITUNG
MODE D’EMPLOI
MANUAL DE INSTRUCCIONES
EN
DE
FR
ES
FCC INFORMATION (U.S.A.)
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
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.
2. IMPORTANT:
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.
* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA. (oscillator)
COVER (OR BACK). NO USER-SERVICEABLE
When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s
Explanation of Graphical Symbols
The lightning flash with arrowhead symbol
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
within an equilateral triangle is intended to alert
the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.
The above warning is located on the top of the unit.
IMPORTANT SAFETY INSTRUCTIONS
1 Read these instructions.
2Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
8 Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9 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.
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.
12 Use only with the cart, stand,
tripod, bracket, or table specified
by the manufacturer, or sold with
the apparatus. When a cart is
used, use caution when moving
the cart/apparatus combination
to avoid injury from tip-over.
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.
WARNING
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
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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
• 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 included 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.
• Be sure to connect to an appropriate outlet with a protective grounding
connection. Improper grounding can result in electrical shock.
Do not open
• Do not open the device or attempt to disassemble the internal parts or modify
them in any way. The device contains no user-serviceable parts. 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 containers on it containing liquids which might spill into any openings.
• Never insert or remove an electric plug with wet hands.
If you notice any abnormality
• If the power cord or plug becomes frayed or damaged, or if there is a sudden
loss of sound during use of the device, or if any unusual smells or smoke
should appear to be caused by it, immediately turn off the power switch,
disconnect the electric plug from the outlet, and have the device inspected 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
• Remove the electric plug from the outlet when the device is not to be used for
extended periods of time, or during electrical storms.
• 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
• Before moving the device, remove all connected cables.
• When setting up the product, 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, electricity is still flowing to the product at the minimum
level. When you are not using the product for a long time, make sure to unplug
the power cord from the wall AC outlet.
• Do not use the device in a confined, poorly-ventilated location. If this device is
to be used in a small space other than an EIA-standard rack, make sure that
there is adequate space between the device and surrounding walls or other
devices: at least 5cm at the sides, 10cm behind and 10cm above. Inadequate
ventilation can result in overheating, possibly causing damage to the device(s),
or even fire.
• Do not expose the device to excessive dust or vibrations, or extreme cold or heat
(such as in direct sunlight, near a heater, or in a car during the day) to prevent
the possibility of panel disfiguration or damage to the internal components.
• Do not place the device in an unstable position where it might accidentally fall
over.
• Do not block the vents. This device has ventilation holes at the front and 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.
• Do not use the device in the vicinity of a TV, radio, stereo equipment, mobile
phone, or other electric devices. Doing so may result in noise, both in the device
itself and in the TV or radio next to it.
• 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.
Connections
• Before connecting the device to other devices, turn off the power for all devices.
Before turning the power on or off for all devices, set all volume levels to
minimum.
• Use only speaker cables for connecting speakers to the speaker jacks. Use of
other types of cables may result in fire.
• Be sure to connect to a properly grounded power source. A ground screw is
provided on the rear panel of this device for maximum safety and shock
prevention. If the mains outlet is not grounded, be sure to connect the ground
screw to a confirmed ground point before plugging the device into the mains.
Improper grounding can result in electrical shock.
Maintenance
• Remove the power plug from the AC outlet when cleaning the device.
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Handling caution
• When turning on the AC power in your audio system, always turn on the device
LAST, to avoid speaker damage. When turning the power off, the device should
be turned off FIRST for the same reason.
• Do not insert your fingers or hands in any gaps or openings on the device
(vents, etc.).
• Do not use the device 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.
• 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.
• Do not use this device for any purpose other than driving loudspeakers.
•Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into any
gaps or openings on the device (vents, etc.) If this happens, turn off the power
immediately and unplug the power cord from the AC outlet. Then have the
device inspected by qualified Yamaha service personnel.
Yamaha cannot be held responsible for damage caused by improper use or modifications to the device, or data that is lost or destroyed.
Always turn the power off when the device is not in use.
Even when the power switch is in the “STANDBY”, electricity is still flowing to the device at the minimum level. When you are not using the device for a long time, make sure
you unplug the power cord from the wall AC outlet.
The performance of components with moving contacts, such as switches, volume controls, and connectors, deteriorates over time. Consult qualified Yamaha service personnel
about replacing defective components.
Illustrations in this manual are for explanatory purposes only, and may not match the actual appearance of the product during operation.
Company names and product names used in this Owner’s Manual are trademarks or registered trademarks of their respective owners.
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 accordance with the following code:
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 GREENand-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.
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
• This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd. (3 wires)
XM4180
XH200
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 manufactured in such a way that the connection can be made simply and without problem.
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XM4180/XM4080/XH200 Owner’s Manual
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Introduction
Thank you for purchasing a Yamaha XM4180, XM4080 or XH200 Power Amplifier.
These power amplifiers were developed from Yamaha’s wealth of experience in building PA equipment and its tradition of careful attention to every detail of circuit design. These power amplifiers
feature high power and superb quality together with superior reliability and stability, guaranteeing the highest possible audio performance.
Main features include
On the XM4180/XM4080:
•Four separate amplifier sections allows the unit to be configured in stereo mode, 2-channel parallel
(mono) mode, and bridged mode.
• Balanced XLR and Euroblock connector inputs, 5-way binding post outputs.
• Each A/B and C/D channel pair features a high-pass filter, with the cutoff frequency switchable between
20Hz and 55Hz.
On the XM4180:
• Enables parallel connection to multiple high-impedance speakers that support 70V line output.
On the XH200:
• Enables parallel connection to multiple high-impedance speakers that support 70V or 100V line output
and a maximum output of 200 watts/channel.
• Euroblock connector inputs, barrier strip outputs, and a high-pass filter, with the cutoff frequency switchable between 40Hz and 80Hz.
On the XM4180/XM4080/XH200:
•Protection includes power on/off muting, DC detection, temperature, and protection indicator.
•Variable-speed, low-noise cooling fan system ensures high reliability even under the most demanding
conditions.
•A MONITOR/REMOTE terminal, which allows control or monitoring of this amplifier from an external
device.
This Owner’s Manual applies to the XM4180, XM4080 and XH200 power amplifiers. In order to
take full advantage of the amplifier and enjoy long and trouble-free operation, please read this
Owner’s Manual carefully before using the product.
Contents
Controls and Functions ........................... 6
Front Panel .......................................................... 6
Rear Panel (XM4180/XM4080) ........................... 7
Rear Panel (XH200) .......................................... 10
Connection ............................................. 11
Using a Euroblock connector ............................ 11
Speaker Connection .......................................... 12
Troubleshooting ..................................... 12
Specifications ......................................... 13
General Specifications ...................................... 13
MONITOR/REMOTE PIN layout ....................... 14
Current Draw ..................................................... 15
Dimensions ....................................................... 16
Block Diagram ................................................... 17
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Controls and Functions
■
Front Panel
234
1
POWER/STANDBY switch and indicator
This is the main POWER switch. Press to turn on the
amplifier. Press it again to turn off. The POWER indicator lights up when the amplifier it turned on.
STANDBY operation can only be set from an external
device, connected to the REMOTE terminal. When
STANDBY is on, the indicator is lit in orange.
2
PROTECT/MUTE indicator
When the protection system is active, the PROTECT
indicator lights up and the speakers are automatically
disconnected from the amplifier’s outputs. The protection system activates in the following situations:
When the amplifier is turned on
The protection system activates for approximately
three seconds when the amplifier is turned on. After
three seconds, the protection system deactivates automatically and the amplifier is ready for normal operation.
If a DC voltage is detected at the amplifier’s outputs
The protection system activates if a DC voltage is
detected at the amplifier’s outputs. Once the DC voltage problem is corrected, the protection system deactivates automatically and the amplifier is ready for
normal operation.
If the amplifier overheats
When overheating occurs, the PROTECT/MUTE
indicator lights. You should immediately turn off the
amplifier and allow it time to cool down. See the Precautions section of this Owner’s Manual for ways to
prevent the amplifier from overheating.
61
* The illustration shows model XM4180.
5
VOLUME controls
The channel volume controls have click detents for the
settings, and each channel can be set over a range of - ∞
dB to 0 dB. On the XM4180 and XM4080, when the
amplifier is set to bridged mode, only the first volume
control on each channel pair is used (i.e., for the A/B
pair, channel A is active, and for the C/D pair, channel C
is active).
6
Air intakes
The amplifier has a forced-air cooling fan that takes in
air from the front and exhausts it from the rear. Make
absolutely sure that these intakes are not obstructed.
Front Rear
Air
intake
Security cover
If you want to keep the volume settings from being
modified, attach the included security cover using
the screw holes shown below, so that the volume
controls are inaccessible.
5
Air
exhaust
3
CLIP/LIMIT indicator
A channel’s CLIP indicator lights up when its output
distortion exceeds 1% (i.e., clipping). Output signal
clipping is typically caused by excessive input signal
levels. When this happens, the limiter is engaged automatically.
4
SIGNAL indicator
A channel’s SIGNAL indicator lights up when its output
exceeds a certain amount (2V rms on the XM4180/
XM4080, 4V rms on the XH200.)
XM4180/XM4080/XH200 Owner’s Manual
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* The illustration shows model XM4180/XM4080.
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