Roland JC-22 Users Manual
Owner’s Manual
Main Features
The JC-22 is a 30 W stereo-input/output guitar amp featuring a transparently clean tone that faithfully
expresses the true character of your guitar.
5 Its unique stereo-input design lets you connect a stereo eect unit to the front panel and enjoy a
stereo eect using just a single amp.
JC-22
5 A beautifully dimensional space chorus eect is produced by spatial mixing (allowing the direct
sound and eect sound to mix in the air).
5 In addition to a 3-band tone-stack EQ, it also provides a bright switch, giving you a rich palette of
tone settings.
5 With two independent power amps and two custom-designed 6.5-inch speakers, the JC-22 delivers a
stereo eect.
5 The enclosure is designed for strength and durability, made of hardened berboard and equipped
with corner protectors.
5 If a separately sold footswitch is connected, you can turn chorus and reverb on/o with your foot.
Dimensional space chorus
This uses two completely independent amps and speakers; one
amp and speaker output the direct sound that is sent from the
guitar, while the other amp and speaker output a sound that is
subtly pitch-modulated. These two sounds are mixed in the air,
creating a softly spacious three-dimensional eect that is warm,
deep, and natural-sounding.
MAIN AMP MAIN AMP
CHORUS
USING THE UNIT SAFELY
Before using this unit, carefully read “IMPORTANT SAFETY INSTRUCTIONS” (inside front cover), “USING THE UNIT SAFELY” (p. 2), and “IMPORTANT NOTES” (p. 3). After reading,
keep the document(s) including those sections where it will be available for immediate reference.
Copyright © 2016 ROLAND CORPORATION
About WARNING and CAUTION Notices
Used for instructions intended to alert the
user to the risk of death or severe injury
should the unit be used improperly.
Used for instructions intended to alert the
user to the risk of injury or material
damage should the unit be used
improperly.
* Material damage refers to damage or
other adverse effects caused with
respect to the home and all its
furnishings, as well to domestic animals
or pets.
ALWAYS OBSERVE THE FOLLOWING
WARNING
Make sure that the power cord is grounded
Connect mains plug of this model to a
mains socket outlet with a protective
earthing connection.
To completely turn o power to the unit, pull out
the plug from the outlet
Even with the power switch turned o, this
unit is not completely separated from its
main source of power. When the power
needs to be completely turned o, turn
o the power switch on the unit, then
pull out the plug from the outlet. For this reason, the
outlet into which you choose to connect the power
cord’s plug should be one that is within easy reach and
readily accessible.
Secure a sucient amount of space at the setup
location
Since this unit normally emits a slight
amount of heat, make sure to secure
sucient space around it, as shown below.
Front Side
30 cm (12 in.)
or greater
20 cm (8 in.)
or greater
Do not disassemble or modify by yourself
Do not carry out anything unless you are
instructed to do so in the owner’s manual.
Otherwise, you risk causing malfunction.
Do not repair or replace parts by yourself
Refer all servicing to your retailer, the
nearest Roland Service Center, or an
authorized Roland distributor, as listed on
the “Information.”
5 cm (2 in.)
or greater
20 cm (8 in.)
or greater
15 cm (6 in.)
or greater
About the Symbols
The symbol alerts the user to important instructions or
warnings.The specific meaning of the symbol is
determined by the design contained within the triangle. In
the case of the symbol at left, it is used for general
cautions, warnings, or alerts to danger.
The symbol alerts the user to items that must never be
carried out (are forbidden). The specific thing that must
not be done is indicated by the design contained within
the circle. In the case of the symbol at left, it means that
the unit must never be disassembled.
The symbol alerts the user to things that must be
carried out. The specific thing that must be done is
indicated by the design contained within the circle. In the
case of the symbol at left, it means that the power-cord
plug must be unplugged from the outlet.
WARNING
Do not use or store in the following types of
locations
• Subject to temperature extremes (e.g.,
direct sunlight in an enclosed vehicle,
near a heating duct, on top of heatgenerating equipment); or are
• Damp (e.g., baths, washrooms, on wet
oors); or are
• Exposed to steam or smoke; or are
• Subject to salt exposure; or are
• Exposed to rain; or are
• Dusty or sandy; or are
• Subject to high levels of vibration and shakiness;
or are
• Placed in a poorly ventilated location.
Do not place in an unstable location
Otherwise, you risk injury as the result of
the unit toppling over or dropping down.
Connect the power cord to an outlet of the correct
voltage
The unit should be connected to a power
supply only of the type described as
marked on the rear side of unit.
Use only the supplied power cord
Use only the attached power cord. Also,
the supplied power cord must not be used
with any other device.
Do not bend the power cord or place heavy objects
on it
Otherwise, re or electric shock may result.
Avoid extended use at high volume
Use of the unit at high volume for
extended periods of time may cause
hearing loss. If you ever experience any
hearing loss or ringing in the ears, you
should immediately stop using the unit
and consult a specialized physician.
WARNING
Do not allow foreign objects or liquids to enter
unit; never place containers with liquid on unit
Do not place containers containing liquid
(e.g., ower vases) on this product. Never
allow foreign objects (e.g., ammable
objects, coins, wires) or liquids (e.g., water
or juice) to enter this product. Doing so
may cause short circuits, faulty operation,
or other malfunctions.
Turn o the unit if an abnormality or malfunction
occurs
Immediately turn the unit o, remove the
power cord from the outlet, and request
servicing by your retailer, the nearest
Roland Service Center, or an authorized
Roland distributor, as listed on the
“Information” when:
• The power cord has been damaged; or
• If smoke or unusual odor occurs; or
• Objects have fallen into, or liquid has been spilled
onto the unit; or
• The unit has been exposed to rain (or otherwise has
become wet); or
• The unit does not appear to operate normally or
exhibits a marked change in performance.
Be cautious to protect children from injury
Always make sure that an adult is on hand
to provide supervision and guidance when
using the unit in places where children
are present, or when a child will be using
the unit.
Do not drop or subject to strong impact
Otherwise, you risk causing damage or
malfunction.
Do not share an outlet with an unreasonable
number of other devices
Otherwise, you risk overheating or re.
Do not use overseas
Before using the unit in overseas, consult
with your retailer, the nearest Roland
Service Center, or an authorized Roland
distributor, as listed on the “Information.”
The ventilation should not be impeded by covering
the ventilation openings with items such
as newspaper, table-cloths, curtains etc.
No naked ame sources such as lighted candles should
be placed on the apparatus.
Use the apparatus in moderate climates.
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IMPORTANT NOTES
CAUTION
When disconnecting the power cord, grasp it by the
plug
To prevent conductor damage, always
grasp the power cord by its plug when
disconnecting it.
Periodically clean the power plug
An accumulation of dust or foreign objects
between the power plug and the power
outlet can lead to re or electric shock.
At regular intervals, be sure to pull out
the power plug, and using a dry cloth,
wipe away any dust or foreign objects that may have
accumulated.
Disconnect the power plug whenever the unit will
not be used for an extended period of time
Fire may result in the unlikely event that a
breakdown occurs.
IMPORTANT NOTES
CAUTION
Route all power cords and cables in such a way as
to prevent them from getting entangled
Injury could result if someone were to
trip on a cable and cause the unit to fall
or topple.
Avoid climbing on top of the unit, or placing heavy
objects on it
Otherwise, you risk injury as the result of
the unit toppling over or dropping down.
Never connect/disconnect a power plug if your
hands are wet
Otherwise, you could receive an electric
shock.
Disconnect all cords/cables before moving the unit
Before moving the unit, disconnect the
power plug from the outlet, and pull out all
cords from external devices.
CAUTION
Before cleaning the unit, disconnect the power
plug from the outlet
If the power plug is not removed from the
outlet, you risk receiving an electric shock.
Whenever there is a threat of lightning, disconnect
the power plug from the outlet
If the power plug is not removed from the
outlet, you risk causing malfunction or
receiving an electric shock.
Power Supply
• Do not connect this unit to same electrical outlet
that is being used by an electrical appliance that
is controlled by an inverter or a motor (such as a
refrigerator, washing machine, microwave oven, or
air conditioner). Depending on the way in which
the electrical appliance is used, power supply noise
may cause this unit to malfunction or may produce
audible noise. If it is not practical to use a separate
electrical outlet, connect a power supply noise lter
between this unit and the electrical outlet.
Placement
• Using the unit near power ampliers (or other
equipment containing large power transformers)
may induce hum. To alleviate the problem, change
the orientation of this unit; or move it farther away
from the source of interference.
• This unit may interfere with radio and television
reception. Do not use this unit in the vicinity of such
receivers.
• Noise may be produced if wireless communications
devices, such as cell phones, are operated in the
vicinity of this unit. Such noise could occur when
receiving or initiating a call, or while conversing.
Should you experience such problems, you should
relocate such wireless devices so they are at a
greater distance from this unit, or switch them o.
• When moved from one location to another where
the temperature and/or humidity is very dierent,
water droplets (condensation) may form inside
the unit. Damage or malfunction may result if you
attempt to use the unit in this condition. Therefore,
before using the unit, you must allow it to stand
for several hours, until the condensation has
completely evaporated.
• Depending on the material and temperature of the
surface on which you place the unit, its rubber feet
may discolor or mar the surface.
• Do not place containers or anything else containing
liquid on top of this unit. Also, whenever any liquid
has been spilled on the surface of this unit, be sure
to promptly wipe it away using a soft, dry cloth.
Maintenance
• Never use benzine, thinners, alcohol or solvents of
any kind, to avoid the possibility of discoloration
and/or deformation.
Additional Precautions
• Use a reasonable amount of care when using the
unit’s buttons, sliders, or other controls; and when
using its jacks and connectors. Rough handling can
lead to malfunctions.
• When disconnecting all cables, grasp the connector
itself—never pull on the cable. This way you will
avoid causing shorts, or damage to the cable’s
internal elements.
• A small amount of heat will radiate from the unit
during normal operation.
• To avoid disturbing others nearby, try to keep the
unit’s volume at reasonable levels.
• Do not use connection cables that contain a built-in
resistor.
Intellectual Property Right
• Roland and BOSS are either registered trademarks or
trademarks of Roland Corporation in the United States
and/or other countries.
• Company names and product names appearing in this
document are registered trademarks or trademarks of
their respective owners.
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