AC-3
Operation Manual
Thank you very much for purchasing a ZOOM (hereafter, “ ”).
Please read this manual carefully to fully understand the functions of the so that
you can make the most of it for many years.
Keep this manual in a convenient location and refer to it as necessary.
Contents
Usage and Safety Precautions ………… 2
Introduction………………………………… 3
Names of parts …………………………… 4
Connecting a guitar ……………………… 6
Connecting output devices …………… 6
Turning the unit on ……………………… 7
Setting the pickup type ………………… 8
Setting the volume ……………………… 8
Setting the source guitar type ………… 9
Setting the target guitar type ………… 10
Adjusting the tone ………………………… 11
Adjusting the reverb ……………………… 12
Using the compressor …………………… 12
Using the boost func tion ……………… 13
Using the anti-feedback f unction ……… 13
Adjusting the effects …………………… 14
Using the tuner …………………………… 16
Setting the type of bat teries used …… 16
Connecting audio equipment ………… 17
Updating the rmware …………………… 18
Troubleshooting ………………………… 19
Specications ……………………………… 19
© 2017 ZOOM CORPORATION
Copying or reprinting this manual in part or in whole without permission is prohibited.
Product names, registered trademarks and company names in this document are the property of their
respective companies. All trademarks and registered trademarks in this document are for identification
purposes only and are not intended to infringe on the copyrights of their respective owners.
Usage and Safety Precautions
Warning
Caution
Safety Precautions
In this operation manual, symbols are used to highlight
warnings and cautions that you must read to prevent
accidents. The meanings of these symbols are as follows.
Something that could cause serious injury
or death.
Something that could cause injury or
damage to the equipment.
Other symbols used
An action that is mandatory.
An action that is prohibited.
Warnings
Operation using an AC adapter
Always use an AC adapter that is 9V DC 500mA center negative
(ZOOM AD-16).
Do not do anything that could exceed the ratings of outlet s and
other electrical wiring equipment.
Before using the equipment in a foreign country or other region
where the electrical voltage differs, always consult with a shop
that carries ZOOM products and use the appropriate AC adapter.
Operation with batteries
Use 2 commercially-available 1.5V AA batteries (alk aline or nick-
el metal hydride).
Carefully study the warning indications of the batteries before
use.
Always keep the battery cover closed during use.
Alterations
Do not open the case or modify the produc t.
Cautions
Product handling
Do not drop, bump or apply excessive force to the unit.
Be careful not to allow foreign objects or liquids to enter the
unit.
Operating environment
Do not use in extremely high or low temperature s.
Do not use near heaters, stoves and o ther heat sources.
Do not use in very high humidity or where it could be splashed
by water.
Do not use in places with frequent vibrations.
Do not use in places with much dust or sand.
AC adapter handling
When disconnecting the power plug from an outlet, always pull
on the plug itself.
Disconnect the power plug from the outlet when the unit will
not be used for a long time and whene ver there is lightning.
Battery handling
Install batteries with the correct +/− orientations.
Use the specied batteries.
Do not use new and old batteries together. Do not use batteries
of different brands or types together.
Remove the batteries when the unit will not be used for a long
time.
If a leak occurs, thoroughly wipe the battery case and battery
terminals to remove the leaked uid.
Connection cables and input/output jacks
Always turn the power OFF for all equipment before connecting
any cables .
Always disconnect all connection cables and the AC adapter
before moving the unit.
Volume
Do not use at a loud volume for a long time.
Usage Precautions
Interference with other electrical equipment
In consideration of safet y, the has been designed
to minimize its emissi on of electr omagnetic waves and to
suppress interference from external electromagneti c waves.
However, equipment that is very suscep tible to interference
or that emits power ful electromagnetic waves could result in
interference if placed nearby. If this occurs, place the
and the other device farther apart.
With any type of electronic device that uses digital control,
including the
cause malfunction, corrupt or destroy data and result in other
unexpected trouble. Always use caution.
, electromagnetic interference could
Cleaning
Use a soft cloth to clean the exterior of the unit if it becomes
dirty. If necessary, use a damp cloth that has been wrung out
well to wipe it.
Never use abrasive c leansers, wax or solven ts such as alcohol,
benzene or paint thinner.
Breakdown and malfunction
If the unit becomes broken or malfunctions, immediately turn
the power off, disconnect the AC adapter and disconnect other
cables. Contact the st ore where you bought the unit or ZOOM
service with the following information: product mod el, serial
number and specific symptoms of breakdown or malfunction,
along with your name, address and telephone number.
FCC regulation warning (for U.S.A.)
Note: 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.
For EU Countries
Declaration of Conformity
2
Introduction
Acoustic remodeling that restores body tone
The 16 source and 15 target guitar type presets simulate the sonic characteristics of a
variety of acoustic guitars with different body shapes and material properties. By choosing a source guitar and a target guitar according to the guitar you are using, you can
share the original rich and beautiful tones of acoustic guitars with audiences during live
performances.
High-quality preamp that can be used with many pickups
The preamp was designed especially for acoustic guitars and can be used with input
from piezoelectric, magnetic and passive pickups. This preamp designed for acoustic guitars provides excellent fundamental performance, including a 3-band EQ and super-low
noise design boasting a 120 dB signal-to-noise ratio and a −100 dBu noise oor.
9 effects for acoustic guitars
The nine types of effects, including choruses, delays and reverbs that make acoustic guitar sounds even more beautiful, have parameters that can be precisely adjusted.
Anti-feedback function with minimal effect on tone quality
The anti-feedback function can quickly and effectively eliminate feedback during a performance.
Clean boost of up to 9 dB
The boost function can reduce the volume differences of fingerpicking, strumming
chords and other guitar playing techniques, as well as increase amplication during solos.
Compressor that is easy to operate
Just turn the compressor knob to control the sound pressure. You can easily adjust it
from a natural effect to hard compression.
3
Names of parts
Front Panel
Effect knob
Volume knob
Reverb knobs
Anti-feedback
switch
Tuner
Target guitar knob Equalizer knobs
Effect switchTuner switch
Parameter knobs
Source guitar knob
Compressor indicator
Boost switch
Boost indicatorEffect indicatorTuner indicator
Boost level knob
Clipping
indicator
Pick-up selection
switch
Compressor knob
Power indicator
4
Names of parts
Rear Panel
BALANCED OUT
OUT-L PRE/POST
jacks
Footswitch
jack
switch
Left Panel
1：GND 2：HOT
3：COLD
POWER (eco)
switch
DC 9V AC adapter
connector
GROUND LIFT
switch
Right panel
Output jacks
USB port Guitar input jack
5
PA system
Headphones
Connecting a guitar
Use a shielded cable to connect a guitar to the .
Acoustic guitar
Connecting output devices
Connect the
To use headphones, connect them to the L/MONO/PHONES jack.
to a PA system, acoustic guitar amp or other output device.
Acoustic guitar amp
6
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