DJ MIXER
DJM-250-K
DJM-250-W
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Operating Instructions
WARNING
WARNING: Handling the cord on this product or
cords associated with accessories sold with the
product may expose you to chemicals listed on
proposition 65 known to the State of California and
other governmental entities to cause cancer and
birth defect or other reproductive harm.
This equipment is not waterproof. To prevent a fire or
shock hazard, do not place any container filled with
liquid near this equipment (such as a vase or flower
pot) or expose it to dripping, splashing, rain or
moisture.
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WARNING
Before plugging in for the first time, read the following
section carefully.
The voltage of the available power supply differs
according to country or region. Be sure that the
power supply voltage of the area where this unit
will be used meets the required voltage (e.g., 230 V
This product is for general household purposes. Any
failure due to use for other than household purposes
(such as long-term use for business purposes in a
restaurant or use in a car or ship) and which requires
repair will be charged for even during the warranty
period.
or 120 V) written on the side panel.
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POWER-CORD CAUTION
WARNING
Handle the power cord by the plug. Do not pull out the
plug by tugging the cord and never touch the power
cord when your hands are wet as this could cause a
short circuit or electric shock. Do not place the unit, a
piece of furniture, etc., on the power cord, or pinch the
cord. Never make a knot in the cord or tie it with other
cords. The power cords should be routed such that they
are not likely to be stepped on. A damaged power cord
can cause a fire or give you an electrical shock. Check
the power cord once in a while. When you find it
damaged, ask your nearest PIONEER authorized
To prevent a fire hazard, do not place any naked flame
sources (such as a lighted candle) on the equipment.
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Operating Environment
Operating environment temperature and humidity:
+5 °C to +35 °C (+41 °F to +95 °F); less than 85 %RH
(cooling vents not blocked)
Do not install this unit in a poorly ventilated area, or in
locations exposed to high humidity or direct sunlight (or
strong artificial light)
service center or your dealer for a replacement.
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The Safety of Your Ears is in Your Hands
Get the most out of your equipment by playing it at a
safe level – a level that lets the sound come through
clearly without annoying blaring or distortion and, most
importantly, without affecting your sensitive hearing.
Sound can be deceiving. Over time, your hearing
“comfort level” adapts to higher volumes of sound, so
what sounds “normal” can actually be loud and
harmful to your hearing. Guard against this by setting
your equipment at a safe level BEFORE your hearing
adapts.
If the AC plug of this unit does not match the AC
outlet you want to use, the plug must be removed
and appropriate one fitted. Replacement and
mounting of an AC plug on the power supply cord of
this unit should be performed only by qualified
service personnel. If connected to an AC outlet, the
cut-off plug can cause severe electrical shock. Make
sure it is properly disposed of after removal.
The equipment should be disconnected by removing
the mains plug from the wall socket when left unused
for a long period of time (for example, when on
ESTABLISH A SAFE LEVEL:
vacation).
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• Set your volume control at a low setting.
• Slowly increase the sound until you can hear it
comfortably and clearly, without distortion.
• Once you have established a comfortable sound
level, set the dial and leave it there.
CAUTION
The ON/OFF switch on this unit will not completely
shut off all power from the AC outlet. Since the power
cord serves as the main disconnect device for the
unit, you will need to unplug it from the AC outlet to
shut down all power. Therefore, make sure the unit
has been installed so that the power cord can be
easily unplugged from the AC outlet in case of an
accident. To avoid fire hazard, the power cord should
also be unplugged from the AC outlet when left
unused for a long period of time (for example, when
BE SURE TO OBSERVE THE FOLLOWING
GUIDELINES:
• Do not turn up the volume so high that you can’t
hear what’s around you.
• Use caution or temporarily discontinue use in
potentially hazardous situations.
• Do not use headphones while operating a motorized
vehicle; the use of headphones may create a traffic
on vacation).
hazard and is illegal in many areas.
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Contents
How to read this manual
The names of displays, menus, and buttons in this manual are enclosed
in brackets. (e.g. [MASTER] channel, [ON/OFF], [File] menu)
Before start
Features....................................................................................................... 5
System setup example ............................................................................... 5
What’s in the box ........................................................................................ 5
Connections
Names of Parts ........................................................................................... 6
Connecting the input/output terminals.................................................... 7
About the AC adapter................................................................................. 8
Operation
Control panel............................................................................................. 10
About the power switch of this unit ........................................................ 10
Basic operations (mixer section) ............................................................ 11
Using the filter function (filter section)................................................... 12
Selecting the crossfader’s curve characteristics
(crossfader section).................................................................................. 12
Starting playback of a Pioneer DJ player using the fader
(fader start section) .................................................................................. 12
Monitoring the sound over headphones (headphones section).......... 13
Using a microphone or external device (MIC/AUX section)................. 13
Additional information
Troubleshooting........................................................................................ 14
Block Diagram .......................................................................................... 14
About trademarks and registered trademarks ...................................... 15
Specifications............................................................................................ 15
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