Owner`s Manual - Strumenti Musicali

Owner’s Manual
Thank you, and congratulations on your choice of the Roland AC-60 Acoustic Chorus.
Before using this unit, carefully read the sections entitled:
• IMPORTANT SAFETY INSTRUCTIONS (page 2)
• USING THE UNIT SAFELY (page 3–4)
• IMPORTANT NOTES (page 5)
These sections provide important information concerning the proper operation of the
unit. Additionally, in order to feel assured that you have gained a good grasp of every
feature provided by your new unit, Owner’s manual should be read in its entirety. The
manual should be saved and kept on hand as a convenient reference.
Contents
IMPORTANT SAFETY INSTRUCTIONS........................................... 2
USING THE UNIT SAFELY............................................................ 3
IMPORTANT NOTES ................................................................... 5
Main Features........................................................................... 6
Names of Things and What They Do ......................................... 7
Control Panel .......................................................................... 7
Rear Panel ........................................................................... 11
Example of Using Two Channels Combined ............................. 13
How to Use the Folding Stand ................................................. 14
Using a Speaker Stand ........................................................... 15
Block Diagram ........................................................................ 16
Specifications.......................................................................... 17
Copyright © 2003 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without
the written permission of ROLAND CORPORATION.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR
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.
The lightning flash with arrowhead symbol, 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.
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WARNING - When using electric products, basic precautions should always be followed, including the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with a dry cloth.
Do not block any of the ventilation openings. Install in
accordance with the manufacturers 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. When 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. Never use with a cart, stand, tripod, bracket,
or table except as 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.
For the U.K.
WARNING:
THIS APPARATUS MUST BE EARTHED
IMPORTANT: THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE 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 coloured 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.
2
USING THE UNIT SAFELY
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.
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
other adverse effects
respect to the home
furnishings, as well
animals or pets.
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.
to damage or
caused with
and all its
to domestic
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 powercord plug must be unplugged from the outlet.
001
009
• Before using this unit, make sure to read the
instructions below, and the Owner’s Manual.
• Do not excessively twist or bend the power cord,
nor place heavy objects on it. Doing so can
damage the cord, producing severed elements and
short circuits. Damaged cords are fire and shock
hazards!
..........................................................................................................
..........................................................................................................
• To avoid overheating and possible fire and shock
hazards, the AC-60 must not be used in an
enclosure with less than 50 cm air spacing from all
sides.
..........................................................................................................
002a
• Do not open or perform any internal modifications on the unit.
..........................................................................................................
003
• Do not attempt to repair the unit, or replace parts
within it (except when this manual provides
specific instructions directing you to do so). Refer
all servicing to your retailer, the nearest Roland
Service Center, or an authorized Roland
distributor, as listed on the “Information” page.
..........................................................................................................
010
• This unit, either alone or in combination with an
amplifier and headphones or speakers, may be
capable of producing sound levels that could
cause permanent hearing loss. Do not operate for
a long period of time at a high volume level, or at
a level that is uncomfortable. If you experience
any hearing loss or ringing in the ears, you should
immediately stop using the unit, and consult an
audiologist.
..........................................................................................................
011
• Do not allow any objects (e.g., flammable material,
coins, pins); or liquids of any kind (water, soft
drinks, etc.) to penetrate the unit.
004
• Never use or store the unit in places that are:
• Subject to temperature extremes (e.g., direct
sunlight in an enclosed vehicle, near a heating
duct, on top of heat-generating equipment); or
are
• Damp (e.g., baths, washrooms, on wet floors);
or are
• Humid; or are
• Exposed to rain; or are
• Dusty; or are
• Subject to high levels of vibration.
..........................................................................................................
008a
• The unit should be connected to a power supply
only of the type described in the operating instructions, or as marked on the unit.
..........................................................................................................
..........................................................................................................
012a:
• Immediately turn the power off, 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” page when:
• The power-supply cord, or the plug has been
damaged; or
• If smoke or unusual odor occurs
• 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.
..........................................................................................................
3
013
101a
• In households with small children, an adult
should provide supervision until the child is
capable of following all the rules essential for the
safe operation of the unit.
..........................................................................................................
• The unit should be located so that its location or
position does not interfere with its proper ventilation.
..........................................................................................................
014
• Protect the unit from strong impact.
(Do not drop it!)
102a
• Always grasp only the plug on the power-supply
cord when plugging into, or unplugging from an
outlet.
..........................................................................................................
..........................................................................................................
103a:
015
• Any accumulation of dust between the power
plug and the power outlet can result in poor
insulation and lead to fire. Periodically wipe away
such dust with a dry cloth. Also, disconnect the
power plug from the power outlet whenever the
unit is to remain unused for an extended period of
time.
..........................................................................................................
• Do not force the unit’s power-supply cord to share
an outlet with an unreasonable number of other
devices. Be especially careful when using
extension cords—the total power used by all
devices you have connected to the extension
cord’s outlet must never exceed the power rating
(watts/amperes) for the extension cord. Excessive
loads can cause the insulation on the cord to heat
up and eventually melt through.
..........................................................................................................
• Never lift up and carry the AC-60 by holding the
folding stand.
..........................................................................................................
104
• Try to prevent cords and cables from becoming
entangled. Also, all cords and cables should be
placed so they are out of the reach of children.
..........................................................................................................
106
• Never climb on top of, nor place heavy objects on
the unit.
016
• Before using the unit in a foreign country, consult
with your retailer, the nearest Roland Service
Center, or an authorized Roland distributor, as
listed on the “Information” page.
..........................................................................................................
..........................................................................................................
107a
• Never handle the power cord or its plug with wet
hands when plugging into, or unplugging from,
an outlet.
..........................................................................................................
108a
• Before moving the unit, disconnect the power
plug from the outlet, and pull out all cords from
external devices.
..........................................................................................................
109a
• Before cleaning the unit, turn off the power and
unplug the power cord from the outlet.
..........................................................................................................
110a
• Whenever you suspect the possibility of lightning
in your area, pull the plug on the power cord out
of the outlet.
..........................................................................................................
120
• Always turn the phantom power off when
connecting any device other than condenser
microphones that require phantom power. You
risk causing damage if you mistakenly supply
phantom power to dynamic microphones, audio
playback devices, or other devices that don't
require such power. Be sure to check the specifications of any microphone you intend to use by
referring to the manual that came with it.
(This instrument's phantom power: 48 V DC, 10 mA Max)
..........................................................................................................
4
IMPORTANT NOTES
291b
In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY” on pages 2
and 3–4, please read and observe the following:
Power Supply
Maintenance
301
401b
• Do not use this unit on the same power circuit with any
device that will generate line noise (such as an electric
motor or variable lighting system).
• To clean the unit, use a dry, soft cloth; or one that is
slightly dampened. Try to wipe the entire surface using an
equal amount of strength, moving the cloth along with the
grain of the wood. Rubbing too hard in the same area can
damage the finish.
307
• Before connecting this unit to other devices, turn off the
power to all units. This will help prevent malfunctions
and/or damage to speakers or other devices.
Placement
351
• Using the unit near power amplifiers (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.
402
• Never use benzine, thinners, alcohol or solvents of any
kind, to avoid the possibility of discoloration and/or
deformation.
Additional Precautions
553
• 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.
352a
556
• This device may interfere with radio and television
reception. Do not use this device in the vicinity of such
receivers.
• When connecting / 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.
352b
• 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 off.
354b
• Do not expose the unit to direct sunlight, place it near
devices that radiate heat, leave it inside an enclosed
vehicle, or otherwise subject it to temperature extremes.
Also, do not allow lighting devices that normally are used
while their light source is very close to the unit (such as a
piano light), or powerful spotlights to shine upon the
same area of the unit for extended periods of time.
Excessive heat can deform or discolor the unit.
557
• A small amount of heat will radiate from the unit during
normal operation.
559a
• When you need to transport the unit, package it in the box
(including padding) that it came in, if possible. Otherwise,
you will need to use equivalent packaging materials.
562
• Use a cable from Roland to make the connection. If using
some other make of connection cable, please note the
following precautions.
• Some connection cables contain resistors. Do not use
cables that incorporate resistors for connecting to this
unit. The use of such cables can cause the sound level
to be extremely low, or impossible to hear. For information on cable specifications, contact the manufacturer of the cable.
355b
• When moved from one location to another where the
temperature and/or humidity is very different, 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.
356
• Do not allow rubber, vinyl, or similar materials to remain
on the unit for long periods of time. Such objects can
discolor or otherwise harmfully affect the finish.
357
• Do not put anything that contains water (e.g., flower
vases) on the unit. Also, avoid the use of insecticides,
perfumes, alcohol, nail polish, spray cans, etc., near the
unit. Swiftly wipe away any liquid that spills on the unit
using a dry, soft cloth.
359
921
• To prevent malfunction and/or damage to speakers or
other devices, always turn down the volume, and turn off
the power on all devices before making any connections.
941
• Once the connections have been completed, turn on
power to your various devices in the order specified. By
turning on devices in the wrong order, you risk causing
malfunction and/or damage to speakers and other
devices.
When powering up:
Turn on the power to the AC-60 last.
When powering down:
Turn off the power to the AC-60 first.
• Wrap the AC cord around the cord hook when transporting or storing the unit.
• Do not paste stickers, decals, or the like to this instrument.
Peeling such matter off the instrument may damage the
exterior finish.
• Do not allow objects to remain on top of the unit while it is
in operation.
5
Main Features
The AC-60 is a compact, high-performance monitor amp developed exclusively for use with acoustic instruments.
It fully presents the harmonic richness of tone characteristic of acoustic instruments.
Compact, High-Performance Stereo
Amp
• Comes equipped with two specially developed 16-cm
(6.5-inch) wide-range speakers.
• Features stereo output (30 W + 30 W).
• Housed in a bass-reflex cabinet.
Features Two Independent Channels,
GUITAR and MIC/LINE
• Each channel includes a 3-band equalizer.
• GUITAR channel handles both piezo and magnetic
pickups.
• The MIC/LINE channel features phantom power,
utilizing highly reliable, dedicated 48 V-output phantom
circuitry.
• Using the MIC/LINE channel for LINE input allows you
to connect guitars with magnetic pickups. You can use a
single guitar’s piezo and magnetic pickups
simultaneously and mix (blend) the sounds together.
High-Quality Digital Effects
• Includes three types of stereo chorus: “SPACE,”
whereby the chorus is synthesized in actual space;
“RICH,” in which the amount of the effect is applied
separately in each frequency range; and “WIDE,” which
provides an enhanced sense of expansiveness using
discrete frequency bands.
• Includes stereo reverb developed especially for acoustic
instruments, which gives a sense of spaciousness and
natural body to the sound.
• Also features a delay effect developed especially for
acoustic instruments, which produces a soft, tuned
sound.
• Furthermore, you can connect an optional foot switch
and use it to turn these effects on and off.
Anti-Feedback Suppresses Feedback
• Anti-feedback features two ways to detect the feedback
point, using the “Manual settings,” or the “Auto
settings,” which allow the feedback point to be detected
automatically.
• You can connect an optional foot switch and use your
foot to operate this feature.
6
Mute Function
• The Mute switch provided makes it easy for you to mute
the sounds for the AC-60’s own speakers as well as the
sounds from LINE OUT. By using the Mute function,
you can plug in and out noiselessly at the guitar.
Furthermore, when you have a tuner connected to
TUNER OUT, the Mute function lets you tune your
instrument without outputting any sound.
• You can connect an optional foot switch and use your
foot to turn this on and off.
External Input Jacks (AUX IN)
• Includes external input jacks, allowing you to connect a
CD player, backing machine, or other device in stereo.
• These include both RCA phono jacks and 1/4” phone
jacks, making it possible to connect just about any kind
of device.
Multiple Output Connectors
• Features DI out that allow you to output directly the
signals input from connected instruments and mics. You
can also connect a tuner. Compatible with TRS balanced
output.
• Line outs feature 1/4” phone mono-output jacks in
addition to XLR connectors for stereo output. You can
use a single AC-60 for all applications.
• It also features a subwoofer out. Connecting a powered
subwoofer allows you to play with an even punchier,
more powerful low end.
• The amp also includes a headphones out that you can
use when playing during nighttime hours and when
making sound checks.
Convenient Placement Features
• Includes an “folding stand” that allows you to change
the angle of the amp when using it for monitoring
purposes.
• It also includes a “speaker stand adapter,” which allows
you to attach the AC-60 to a speaker stand. This makes
using the AC-60 easier when you are performing
standing up, and allows you to use the amp as a simple
PA.
• Also included is a carrying case for greater portability.
Names of Things and What They Do
Control Panel
fig.010
1 2 3
6
7
8
4 5
9
10 11
12
16
17
13 14 15
18
1. INPUT
3. SHAPE button
(GUITAR CHANNEL)
Setting this to ON modifies the midrange to create a bright
tone suitable for strumming chords.
Connect guitars here.
(MIC/LINE CHANNEL)
This emphasizes brushing sounds, allowing you to strum
with a more edgy feeling.
Connect mics and line-level devices here. You can also
connect guitars with pickups equipped with preamps.
4. PHANTOM switch
This handles balanced input, so you can connect 1/4” phone
TRS jacks and XLR-type connectors.
fig.030
This turns the phantom power on and off.
Set this to “ON” when connecting mics that require phantom
power (condenser mic, etc.).
XLR
Set this to “OFF” when connecting mics that do not require
phantom power or other devices.
TRS
• Use the following sequence when connecting mics that
require phantom power:
1. Turn the PHANTOM switch off.
2. Connect the mic.
You can use the two channels in combination.
Refer to “Example of Using Two Channels Combined” (P.13).
2. PICKUP button
This switches the input circuitry for either piezo or magnetic
pickups, according to the type of pickup on the connected
guitar. Press down the button for magnetic pickups.
* Set this to MAGNETIC if your guitar has an active pickup
equipped with a preamp.
3. Turn the PHANTOM switch on.
• Supplying phantom power to mics that do not require it
or supplying it to other devices may cause such
equipment to malfunction. Always be sure to turn the
switch off before connecting.
* To protect the circuitry, all output is muted momentarily after
the PHANTOM switch is turned on or off.
* Phantom power is supplied only to the XLR connectors for the
MIC/LINE channel INPUT.
* Noise may be produced if connectors are connected or
disconnected while the phantom power is turned on.
7
Names of Things and What They Do
Phantom Power
Because they have a comparatively wider range and better
sound quality than dynamic mics, condenser mics are often
used for miking acoustic guitars. However, they require a
power source to operate. Although some condenser mics run
off batteries placed within the mic housing, in many cases a
type of power supply known as “phantom power” is
required. This power supply uses the existing mic cable to
feed power.
The AC-60’s phantom power is output at a constant 48 V, so
it conforms to professional specifications required at
recording studios.
9. TREBLE knob
This adjusts the level of the high-frequency range.
Turning the knob to the right emphasizes brushing sound
when chords are stroked.
The tone of acoustic instruments varies immensely from one
instrument to the next. The kind of sound required also
varies according to how an instrument is being used in a
particular ensemble. Actively use the BASS, MIDDLE, and
TREBLE knobs to adjust the tone to suit the instrument you
are using and the conditions in which it is being used.
(Example)
5. SELECT button
This switches the input level to match that of the connected
device (mic or line).
You can connect guitars with magnetic pickups when LINE
is selected with the SELECT button.
* Note that the volume is increased if the switch is set to “MIC”
when you have a line-level device connected.
6. VOLUME knob
*
When using the AC-60 with the GUITAR channel and MIC/
LINE channel mixed, adjust the volume balance between the
two channels with the VOLUME knob.
(GUITAR CHANNEL)
• When using the AC-60 with the speaker stand attached,
you may want to turn up the BASS knob so the lower
range is perceived better.
• If the sound seems too harsh, such as immediately after
changing strings, you may want to turn down the
TREBLE knob to cut back on the high frequencies.
10. CHORUS button
This turns the chorus on and off.
The indicator lights up when this is on.
You can use a foot switch (the optional BOSS FS-5U) to
switch the chorus on and off. Turning the chorus on and off
with the foot switch works on both channels.
This adjusts the volume of the GUITAR channel.
* To accommodate the lower output of piezo pickups, the volume
level when the VOLUME knob is between the 7 and 10
positions is set somewhat higher when the PICKUP button is
set to PIEZO in comparison with the MAGNETIC setting.
(MIC/LINE CHANNEL)
This adjusts the volume of the MIC/LINE channel.
7. BASS knob
This adjusts the level of the low-frequency range.
Turning the knob to the right (clockwise) emphasizes the
feeling of body in the sound.
8. MIDDLE knob
This adjusts the level of the midrange.
Turning the knob to the right creates a fatter sound when
melodies or individual notes are played.
8
11. CHORUS knob
You can switch between the three types of chorus (SPACE,
RICH, and WIDE) by setting this knob.
You can adjust the amount of effect applied by changing the
position of the knob.
* This is enabled when the CHORUS button is in the ON
position.
* The markings indicating the SPACE and RICH positions are
approximate. Listen to the sound to confirm the effect as you
make adjustments.
SPACE
This is a spacially synthesized chorus. With spacially
synthesized chorus, a method available only in stereo, the
chorus effect is created by taking the sound from the right
speaker, from which the effect sound is output, and the
sound from the left speaker, which outputs the direct sound,
and then mixing them in the actual space. This creates a
greater lateral spread than that produced when the sounds
are mixed electronically, providing a more natural sense of
breadth.
Names of Things and What They Do
RICH
fig.031
MANUAL
This is a stereo chorus that is divided into three frequency
ranges.
Here, the effect is separated into three bands, low-frequency,
midrange, and high-frequency, and by applying the most
suitable amount of chorus effect in each range, it provides a
sense of fullness and breadth that is perfectly suited to the
acoustic guitar.
The low end is firmly in the center, and sound spreads out
more and more as the sound rises from the midrange up
through the higher frequencies.
WIDE
* Turn the knob to “OFF” if you are not using anti-feedback.
14. START button
This starts automatic detection of the feedback point.
The indicators show the operating status of the automatic
detection function.
While also relying on the division of sound into separate
bands, this chorus offers even greater expansiveness than
RICH.
The sound image spreads beyond the AC-60’s speakers,
producing an effect that seems to envelope the listener in
sound.
12. REVERB/DELAY knob
You can adjust this knob to switch between the reverb and
delay effects.
Standby:
Flashes slowly
During Detection:
Flashes rapidly
After Detection:
Remains lit
* Holding down the START button for one second or longer
puts automatic detection in standby.
ANTI-FEEDBACK
fig.32
You can adjust the amount of effect applied by changing the
position of the knob.
* Turn the knob to “OFF” if you are not using the reverb or
delay effect.
* The markings indicating the reverb and delay positions are
approximate. Listen to the sound to confirm the effect as you
make adjustments.
REVERB
This stereo reverb, developed especially for acoustic
instruments, gives a sense of spaciousness and natural sonic
quality.
Turn the knob to adjust the volume of the reverb effect.
DELAY
This delay, developed especially for acoustic instruments,
adds soft reflections to the original sound.
Turn the knob to change the delay time.
* You can use a foot switch (the optional BOSS FS-5U) to
switch the reverb and delay on and off.
13. FREQUENCY knob
This selects the frequency at which the anti-feedback
function operates.
Use the knob to switch between automatic and manual
settings for the operational frequency. (p. 10)
Anti-feedback is a function that controls feedback that arises
between the guitar or mic and the amp.
The feedback is suppressed by attenuating the frequency at
which the feedback occurs.
* This is not designed to work with respect to the high-frequency
feedback that can occur when using microphones.
Anti-feedback can be used in two different ways; you can make
use of either the “Auto settings” or the “Manual settings.”
Feedback
This is a phenomenon where signals output from the
speakers are then picked up again by the mic or pickup, and
the sound is further amplified and output from the speakers,
resulting in an unpleasant oscillating sound.
* If the anti-feedback alone does not control the feedback, adjust
your settings, for example by lowering the volume or cutting
the low frequencies.
9
Names of Things and What They Do
Setting the Feedback Point Automatically
15. MUTE button
You can have the frequency at which the feedback is
suppressed be determined automatically.
This switches the Mute function on and off.
* Use in conditions where feedback occurs.
1. Turn the FREQUENCY knob to the “AUTO” position.
When you press the button, the MUTE indicator flashes,
muting is turned on, and the speaker output and sounds
from SUB WOOFER OUT and LINE OUT are muted.
With the mute function activated, you do not need to turn
down the VOLUME knob or MASTER knob to mute the
noise when plugging into, or unplugging from your guitar.
fig.033
* Sounds from the DI OUT/TUNER OUT and PHONES jacks
are not muted.
The ANTI-FEEDBACK indicator flashes slowly, and
automatic detection goes into standby.
2. Press the START button.
Automatic detection of the feedback point starts. The
indicator flashes rapidly when detection is in progresses,
and when the feedback point is found, the indicator
lights steadily. If no feedback point is detected, the
indicator flashes slowly, and the automatic detection
function returns to standby.
By connecting a tuner (optional) to DI OUT/TUNER OUT
and then pressing the MUTE button, you can tune your
instrument without the sound being output from the
speakers.
You can use a foot switch (the optional BOSS FS-5U) to
switch muting on and off. (p. 12)
16. MASTER knob
3. Press the START button once more to conduct the
automatic detection again.
This adjusts the volume from the speakers, PHONES, and
SUB WOOFER OUT.
Setting the Feedback Point Manually
17. PHONES jack
Turn the knob to select the frequency at which the feedback
is to be suppressed.
Turn the knob, moving through the range of L through H
(the ANTI-FEEDBACK indicator lights up) to set the
frequency at which the feedback is to be suppressed.
fig.34
Headphones are connected here. No sounds are output from
the speakers or from SUB WOOFER OUT when headphones
are connected.
18. POWER switch
This turns the AC-60’s power on and off.
The POWER indicator lights up when the power is on.
* This unit is equipped with a protection circuit. A brief interval
(a few seconds) after power up is required before the unit will
operate normally.
The frequency to which the anti-feedback function is applied
increases as the knob is turned to the right.
You can use a foot switch (the optional BOSS FS-5U) to run
automatic detection of the feedback frequency or to turn the
anti-feedback function on and off.
You can use anti-feedback even when feedback is not a
problem. For example, you can use it to remove undesirable
resonance in the low to midrange, as well as correct other
problems with the sound quality.
10
Names of Things and What They Do
Rear Panel
fig.040
1
2
3
4
5
PCS-31
White
Backing Machine
Red
Mute On/Off Anti-Feedback
CD Player
PCS-31
Powered
Sub Woofer
White
Mixer
Recorder
Mixer
Tuner
Chorus
On/Off
Red
Reverb/Delay
On/Off
1. LINE OUT jack
2. SUB WOOFER OUT jack
You can connect a mixer, recording device, or other such
device here. The output level is +4 dBu.
You can connect a powered subwoofer to play back sounds
with an even punchier, more powerful low end.
Included here are XLR connectors (L/R: stereo output) and
1/4” phone jacks (mono output).
The volume is adjusted with the MASTER knob.
fig.090
3. AUX IN jack
* You cannot adjust the volume for LINE OUT with the
MASTER knob.
* When outputting stereo sounds from LINE OUT, you may
not be able to achieve the same effect with sounds of spacially
synthesized chorus (SPACE, WIDE) that you get when these
sounds are played through the AC-60’s own speakers.
You can connect a CD player, backing machine, or other
device and play back sounds in stereo. Inputs feature both
RCA phono jacks and 1/4” phone jacks. When only the left
1/4” phone jack is connected, playback is in mono.
Although the input from AUX IN is output from the
speakers, PHONES, and SUB WOOFER OUT, it is not output
from LINE OUT. The volume is adjusted with the MASTER
knob and muting on/off for these sounds is controlled with
the MUTE button.
11
Names of Things and What They Do
If devices are connected to both the RCA phono jacks and the
1/4” phone jacks, then the two inputs are mixed.
4. DI OUT/TUNER OUT jack
The direct sound of the device or instrument connected to the
GUITAR or MIC/LINE channel is output here. This is a 1/4”
phone TRS jack with balanced output.
(MUTE, ANTI-FEEDBACK)
Using a special connection cable (the optional PCS-31) to
connect two foot switches (the optional BOSS FS-5L and FS5U), you can use the FS-5L to switch muting on and off, and
use the FS-5U to operate the anti-feedback function.
fig.050
You can also use this jack to connect a tuner.
fig.070
When a 1/4” phone (mono) plug is used to connect only one
foot switch, only the Mute on/off function is enabled.
Connect an FS-5L for this.
* If balanced output is not required, use a 1/4” phone (mono)
plug to connect to this jack.
The MUTE button should be set to off when a foot switch is
connected for muting.
If balanced output is not required, you can use the special
connection cable (the optional PCS-31) to use the DI OUT
and TUNER OUT simultaneously.
* You cannot switch the muting off by pressing the foot switch
when the MUTE button is on (when the MUTE indicator is
lit).
fig.080
* When using an FS-5U (momentary type) to switch muting on
and off, the muting is switched on only while the switch is held
down.
The foot switch’s function with anti-feedback is as shown
below.
PCS-31
White
Red
Tuner
Recoreder
• When the FREQUENCY knob is positioned in the range
from L to H, the switch turns the anti-feedback function
on and off.
• When the FREQUENCY knob is positioned at AUTO,
the switch functions as the START switch for the
automatic detection. Holding the foot switch down for
one second or longer returns the automatic detection
function to standby mode.
(CHORUS, DELAY/REVERB)
Be sure to connect the tuner to COLD (red side of PCS-31).
5. FOOT SW jack
The AC-60 accepts the FS-5L (latch type) and FS-5U
(momentary type) foot switches.
Using a special connection cable (the optional PCS-31) to
connect two foot switches (the optional BOSS FS-5U), you
can use one FS-5U to switch the chorus on and off, and use
the other FS-5U to switch the delay or reverb on and off.
fig.060
* Set the polarity switch as shown below.
fig.071
When a 1/4” phone (mono) plug is used to connect only one
foot switch, only the chorus on/off function is enabled.
* The chorus on/off function works on both channels.
* You cannot switch the chorus on and off by pressing the foot
switch when the CHORUS button is off.
12
Example of Using Two Channels Combined
When Using One Guitar with Two Types
of Pickups
GUITAR CHANNEL:
PiezoPickup (PICKUP button = PIEZO)
PIEZO
MIC/LINE CHANNEL:
Magnetic Pickup (SELECT button = LINE)
MAGNETIC
You can balance the volume levels using each channel’s
VOLUME knob, and adjust the tone for each pickup to attain the
optimal sound with the equalizer (BASS/MIDDLE/TREBLE)
knobs.
When Using a Mic and a Pickup
GUITAR CHANNEL:
Piezo or Magnetic Pickup
PIEZO or
MAGNETIC
MIC/LINE CHANNEL:
Condenser or Dynamic mic (SELECT button = MIC)
This allows you to blend the fat midrange of the pickup with the
mic’s delicate high end.
Set the PHANTOM switch to ON if using a condenser mic.
Condenser mic or Dynamic mic
When Using Two Guitars
GUITAR CHANNEL:
Guitar 1 ......... Piezo or Magnetic Pickup
Guitar 1
MIC/LINE CHANNEL:
Guitar 2 ......... Magnetic Pickup (SELECT button = LINE)
PIEZO or
MAGNETIC
You can switch guitars without having to readjust the volume
and tone.
Guitar 2
MAGNETIC
13
How to Use the Folding Stand
When using the AC-60 on floors, or in other low-lying positions, then setting up and using the folding stand can make it easier to
hear the sounds from the speakers.
fig.100
• When using the folding stand, always be sure to place it so the AC-60 remains level.
• When not using the folding stand, fold it up, and secure it to the bottom of the amp using the stoppers.
fig.101
Stopper
• Never lift up and carry the AC-60 by holding the folding stand.
• Never place any objects on top of the AC-60 when using the folding stand.
14
Using a Speaker Stand
By using a speaker stand, you can mount the AC-60 at the optimal height for use as a monitor speaker or simple PA device.
fig. Caution
● The AC-60 is designed to be used only with speaker
stands whose dimensions meet the specifications
described below.
● Before use, adjust the speaker stand to a height of 165 cm
(65”) or less and a leg spread of 120 cm (47-1/4”) or more,
as shown in the figure below.
Do not use it with a speaker stand that does not meet the
fig.110\
following specifications.
fig.120
Diameter: 3.8 cm
(1-1/2”)
165 cm or less
(65”)
Leg spread: 120 cm or more
(47-1/4”)
120 cm or more
(47-1/4”)
fig.130
● Using a speaker stand that does not meet the
specifications at left or that is adjusted to a height over
Diam
eter:
136 c
165 cm (65”), or a leg spread of less than 120 cm (47-1/4”)
(53-9 m or mo
re
/16”)
may result in damage to equipment or injury due to the
stand tipping over.
● When using AC-60 with a speaker stand, the speaker
stand must be carefully placed so it is level and sure to
remain stable.
Leg spread: 120 cm or more
(47-1/4”)
● Cables connected to AC-60 should be given enough slack
to prevent accidents that might result from someone
tripping over them.
● To prevent accidents due to falls, do not place any object
on the AC-60 when it’s mounted on a speaker stand.
● Always have at least one other person assist you when
mounting the AC-60 on a speaker stand, or when
adjusting the height of the stand while the AC-60 remains
mounted on it.
15
16
MIC/LINE INPUT
GUITAR INPUT
AUX IN
R
L
R
L(MONO)
VOLUME BASS MIDDLE TREBLE
MIC/LINE CHANNEL
VOLUME BASS MIDDLE TREBLE
GUITAR CHANNEL
REVERB/DELAY
CHORUS
STEREO EFFECT
ANTI
FEEDBACK
+
+
MASTER VOL
STEREO
POWER AMP
MONO
R
L
R
L
DI OUT/TUNER OUT
LINE OUT
SPEAKER
SUB WOOFER
OUT
PHONES
Block Diagram
fig.block
Specifications
Rated Power Output
Indicator
30W + 30W
CHORUS (GUITAR Channel, MIC/LINE Channel)
Nominal Input Level (1 kHz)
GUITAR Channel: -10 dBu
MIC/LINE Channel: -50 / -10 dBu
AUX IN: -10 dBu
Nominal Output Level (1 kHz)
DI/TUNER OUT: +4 dBu
LINE OUT: +4 dBu
SUB WOOFER OUT: +4 dBu
* 0 dBu = 0.775 Vrms
ANTI-FEEDBACK
MUTE
POWER
Connectors
GUITAR Channel Input Jack (1/4” phone type)
MIC/LINE Input Jack (XLR type, 1/4” phone type)
AUX IN Jacks (RCA phono type,1/4” phone type)
DI/TUNER OUT Jack (1/4” TRS phone type)
LINE OUT Jacks (XLR type, 1/4” phone type)
SUB WOOFER OUT Jack (1/4” phone type)
Speakers
PHONES Jack (1/4” TRS phone type)
16 cm (6.5 inches) x 2
FOOT SWITCH Jack (1/4” TRS phone type)
Controls
Power Supply
(GUITAR Channel)
AC 117 V, AC 230 V, AC 240 V
PICKUP Switch (PIEZO/MAGNETIC)
Power Consumption
SHAPE Switch
68 W
VOLUME Knob
Equalizer Knobs (BASS, MIDDLE, TREBLE)
Dimensions
CHORUS Switch
380 (W) x 270 (D) x 268 (H) mm
15 (W) x 10-11/16 (D) x 10-9/16 (H) inches
(MIC/LINE Channel)
PHANTOM Switch
SELECT Switch (MIC/LINE)
Weight
9.8 kg
21 lbs 10 oz
VOLUME Knob
Equalizer Knobs (BASS, MIDDLE, TREBLE)
Accessory
CHORUS Switch
Carrying Case
Owner’s Manual
CHORUS Knob
REVERB/DELAY Knob
Options
Foot Switch: BOSS FS-5L (Mute On/Off), BOSS FS-5U
Connection Cable: PCS-31
(ANTI-FEEDBACK)
FREQUENCY Knob
START Button
MUTE Switch
* In the interest of product improvement, the specifications and/
or appearance of this unit are subject to change without prior
notice.
MASTER Knob
POWER Switch
17
MEMO
18
For EU Countries
This product complies with the requirements of European Directives EMC 89/336/EEC and LVD 73/23/EEC.
For the USA
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
Unauthorized changes or modification to this system can void the users authority to operate this equipment.
This equipment requires shielded interface cables in order to meet FCC class B Limit.
For Canada
NOTICE
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
AVIS
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
Information
When you need repair service, call your nearest Roland Service Center or authorized Roland distributor in your country as
shown below.
AFRICA
EGYPT
Al Fanny Trading Office
9, EBN Hagar A1 Askalany Street,
ARD E1 Golf, Heliopolis,
Cairo 11341, EGYPT
TEL: 20-2-417-1828
REUNION
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Halilit P. Greenspoon &
Sons Ltd.
CRISTOFORI MUSIC PTE
LTD
PARAGUAY
NORWAY
SINGAPORE
Swee Lee Company
Blk 3014, Bedok Industrial Park E,
#02-2148, SINGAPORE 489980
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Asuncion PARAGUAY
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TEL: (02) 924-2335
UL. Gibraltarska 4.
PL-03664 Warszawa POLAND
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330 Verng NakornKasem, Soi 2,
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Musicland Digital C.A.
Tecnologias Musica e Audio,
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ENTERPRISE CO., LTD.
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(PTY) Ltd.
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Main Road, Claremont 7708
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P.O.BOX 23032, Claremont 7735,
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TEL: (021) 674 4030
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Co.,Ltd.
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TEL: (021) 5580-0800
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(BEIJING OFFICE)
10F. No.18 Anhuaxili
Chaoyang District, Beijing,
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TEL: (010) 6426-5050
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Tom Lee Music Co., Ltd.
Service Division
22-32 Pun Shan Street, Tsuen
Wan, New Territories,
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TEL: 2415 0911
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Flats Compound Off. Dr. Edwin
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TEL: (022) 2493 9051
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TEL: (011) 4508-2700
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Rua San Jose, 780 Sala B
Parque Industrial San Jose
Cotia - Sao Paulo - SP, BRAZIL
TEL: (011) 4615 5666
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Instrumentos Musicales
Ave.1. Calle 11, Apartado 10237,
San Jose, COSTA RICA
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1461-9, Seocho-Dong,
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TEL: (02) 899 9801
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S.A.
Rut.: 96.919.420-1
Nataniel Cox #739, 4th Floor
Santiago - Centro, CHILE
TEL: (02) 688-9540
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OMNI MUSIC
75 Avenida Norte y Final
Alameda Juan Pablo ,
Edificio No.4010 San Salvador,
EL SALVADOR
TEL: 262-0788
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Av. Toluca No. 323, Col. Olivar
de los Padres 01780 Mexico D.F.
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DK-2100 Copenhagen
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TEL: 3916 6200
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107 564 Moscow, RUSSIA
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ve ihracat Ltd Sti
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TEL: (01792) 700139
MIDDLE EAST
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Moon Stores
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Audio House, Belmont Court,
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aDawliah Universal
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Warehouse Area ‘DEPO’ Pf.83
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Al Emadi Co. (Badie Studio
& Stores)
FBS LINES
MuTek
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TEL: (022) 608 00 60
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BENTLEY MUSIC SDN BHD
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Fin-00201 Helsinki, FINLAND
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J1. Cideng Timur No. 15J-150
Jakarta Pusat
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PT Citra IntiRama
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JORDAN
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245 Prince Mohammad St.,
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TEL: (06) 464-1200
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P.O.Box 32918, Braamfontein 2017
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TEL: (011) 403 4105
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Lilleaker N-0216 Oslo
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TEL: 2273 0074
Room 5, 9fl. No. 112 Chung Shan
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TEL: (02) 2561 3339
11 Melle St., Braamfontein,
Johannesbourg, SOUTH AFRICA
Distribuidora De
Instrumentos Musicales
8 Retzif Ha'aliya Hashnya St.
Tel-Aviv-Yafo ISRAEL
TEL: (03) 6823666
Radex Sound Equipment Ltd.
17, Diagorou Street, Nicosia,
CYPRUS
TEL: (022) 66-9426
Siraselviler Caddesi Siraselviler
Pasaji No:74/20
Taksim - Istanbul, TURKEY
TEL: (0212) 2499324
U.A.E.
Zak Electronics & Musical
Instruments Co. L.L.C.
Zabeel Road, Al Sherooq Bldg.,
No. 14, Grand Floor, Dubai, U.A.E.
TEL: (04) 3360715
NORTH AMERICA
CANADA
Roland Canada Music Ltd.
(Head Office)
5480 Parkwood Way Richmond
B. C., V6V 2M4 CANADA
TEL: (604) 270 6626
Roland Canada Music Ltd.
(Toronto Office)
170 Admiral Boulevard
Mississauga On L5T 2N6
CANADA
TEL: (905) 362 9707
U. S. A.
Roland Corporation U.S.
5100 S. Eastern Avenue
Los Angeles, CA 90040-2938,
U. S. A.
TEL: (323) 890 3700
IRAN
MOCO, INC.
No.41 Nike St., Dr.Shariyati Ave.,
Roberoye Cerahe Mirdamad
Tehran, IRAN
TEL: (021) 285-4169
As of December 1, 2002 (Roland)
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