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Owner's Manual
5-12, Shimotakaido 1-chome, Suginami-ku, Tokyo, Japan
C 2003 KORG INC.
Thank you for purchasing Ampworks bass — Korg's portable modeling signal processor.
To ensure trouble-free enjoyment, please read this manual carefully and use the product
as described. When you have finished reading the manual, keep it for future reference.
Main features
Ampworks bass uses Korg's "
" modeling technology to deliver powerful amp,
cabinet and effect modeling sounds. Ampworks is the ideal choice for a wide range of
applications including direct-line recording, live performance and practicing through
You can combine eleven types of amps with ten types of cabinets to simulate numer-
ous varieties of setups, and also use eleven high-performance effects to add finishing
touches to your sound. All this power is easy to control; just use the Amp Type,
Cabinet, and Effect selectors plus the amp and effect knobs to dial-in the sound you
You can select from eleven preset programs that are optimized for each amp type, two
user programs, or use the manual mode.
3. Use the control knobs (6) to adjust the gain, tone, and volume of the modeled amp.
Use the GAIN knob to adjust the gain. If the selected amp type is VALVE – JAZZ,
adjusting the gain will also adjust the compressor depth. If the selected amp type is
STUDIO – UKMAJOR, the gain will vary the distortion.
TREBLE, MIDDLE, and BASS adjust the tone. If the selected amp type is VALVE –
JAZZ, you can use the MIDDLE knob to select one of five center frequencies for the
mid-range. Hold down the TAP button (9) and turn MIDDLE to switch center
frequencies.VOLUME adjusts the overall volume.
Some tone settings may produce unwanted distortion. If this happens, lower the
4. Use the EFFECT selector (7) to select the desired modeled effect and use the
EFF.DEPTH knob (8) to adjust the effect level.
For some of the following effects, you can adjust the modulation speed, delay time, or
reverb time. The parameter will be set to a value corresponding to the interval
(maximum 4 seconds) at which you press the TAP button (9) twice.
Range of parameter value *Proportion to TAP interval
CHORUS, PHASER, ROTARY: Modulation speed
80.0 [ms]...4.0 [s]
Modulation speed
160.0 [ms]...8.0 [s]
Delay time
80.0 [ms]...1.0 [s]
Reverb time
approx.0.5 [s]...8.0 [s]
- - -
- - -
*Proportion to TAP interval means that for example if FLANGE is selected, pressing
the TAP button at a 4-second interval will set the parameter value to twice that length,
or a modulation rate of eight seconds per cycle.
In addition to these settings, you can also adjust the depth of noise reduction by
holding down the TAP button (9) and turning the EFF.DEPTH knob (8).
5. If a user or preset program is selected, and you want to restore the setting of a
specific selector or knob to the setting stored in the program, turn that selector or
knob until the LED of the selected program (PRESET, PROG/MANU) goes dark. The
LED will go dark for an instant, and then light again immediately.
If you select a different program or turn off the power without saving an edited
program, your changes will be lost.
Saving a program
You can store two of your favorite settings in PROG1 and PROG2.
1. Press the WRITE button (10). (The PROG/MANU button will blink.)
2. Press the PROG/MANU button (3) to select where you wish to save your program.
Each time you press the button, the selection will alternate between PROG1 (LED
blinking green) and PROG2 (LED blinking red).
3. Press the WRITE button once again to save your settings. If you decide not to save
your settings, press the CANCEL button (2).
Data that had previously been in the writing-destination will be overwritten and
The bypass on/off setting is not remembered.
Parts and what they do
6. Control knobs
10. WRITE button
Printed in China
3. PROG/MANU button
CANCEL button
4. AMP TYPE selector
5. CABINET selector
13. INPUT jack
15. OUTPUT jack
14. LINE/AMP select switch
To restore the factory settings
You can restore PROG1 and PROG2 to the factory settings as follows.
Hold down the WRITE button (10) and turn on the power.
Using the optional foot switch
If the optional foot switch (PS-1 or PS-100) is connected to the FOOT SW jack (16), you
can perform an operation at power-on to specify whether the foot switch will change
programs or switch bypass on/off.
If you want to use the footswitch to change programs:
just turn on the power.
Pressing the foot switch will cycle in the order of PROG1
PROG1 ...
If you want to switch between bypass and a program:
turn on the power while holding down the PROG/MANU button (3).
x 1
Pressing the foot switch will turn bypass on/off. This allows you to switch between one
x 2
x 1
program of choice and bypass.
x 2
The operating mode of the foot switch can be changed only by this special operation
- - -
at power-on.
Specifications and options
Amp models:
Cabinet models:
11 + noise reduction
2 user, 1 manual, 11 preset
Bass guitar input (mono 1/4" jack)
Line/headphone dual-purpose output (stereo 1/4" jack)
Power supply:
Two AA alkaline batteries (allows approximately 10 hours of
continuous use) or separately sold AC adaptor (DC 4.5V
Dimensions (W x D x H):144 mm x 78 mm x 48 mm (not including protruding parts)
222 g (not including batteries)
Included items:
Owner's manual, Two AA alkaline batteries
AC adaptor, foot switch (PS-1 or PS-100)
Appearance and specifications are subject to change without notice for improvement.
What is
(Resonant structure and Electronic circuit Modeling System) is KORG's
proprietary sound modeling technology which precisely reproduces the complex
character and nature of both acoustic and electric instruments as well as electronic
circuits in real world environments.
emulates a wide variety of sound genera-
tion characteristics including instrument bodies, speakers & cabinets, acoustic fields,
microphones, vacuum tubes, transistors, etc.
Turning the power on/off
When using batteries:
8. Effect depth knob
1. Slide the battery cover (11) located on the underside of the case toward the UNLOCK
position, and remove it. Insert two AA alkaline batteries (included), being sure to
observe the correct polarity. Close the cover and slide it to the LOCK position to
fasten it in place.
2. When using batteries, the power will turn on when a
mono cable is plugged into the INPUT jack (13). The
POWER LED (1) will light while the power is on.
The power will turn off when you remove the cable
from the INPUT jack.
Be sure to remove the cable from the INPUT jack when you are not using Ampworks
to preserve battery life.
If you connect a stereo cable, the power will not be turned on.
When the batteries run down, the POWER LED will blink. Replace the batteries as
soon as possible. Batteries that have become unusable should be removed from the
unit immediately. If dead batteries are left in the unit, they may leak or cause other
malfunctions. You should also remove the batteries if you will not be using Ampworks
for an extended period.
When using the AC adaptor:
9. TAP button
1. Connect the separately sold AC adaptor to the DC 4.5V jack (12), and plug the AC
adaptor into an AC outlet. The POWER LED (1) will light, and the power will turn on.
7. EFFECT selector
Use only the specified external AC adaptor. (DC 4.5V
Be sure to disconnect the AC adaptor from the AC outlet when you are not using
1. Turn off the power of the equipment you want to connect, and lower each volume control.
2. Connect your bass to the INPUT jack (13).
3. Set the LINE/AMP select switch (14) to the appropriate position for the output destination.
If you connect the output to a mixer, recorder, or headphones, use the "LINE" setting.
If you connect the output to a bass amp, use the "AMP" position. When AMP is
selected, the cabinet response will automatically be adjusted internally to optimize the
sound produced through a bass amp.
Use the "LINE" position if you are connecting Ampworks to a bass amp that has a
tweeter and delivers good high-frequency response.
16. FOOT SW jack
12. DC4.5V
4. Connect the OUTPUT jack (15) to your mixer or bass amp.
11. Battery cover
The OUTPUT jack is stereo (TRS), so if you use a mono cable to connect it to your
bass amp etc., only the sound of the L (left) channel will be heard.
If you are listening through headphones, connect them to this jack.
A tube amp with the ULTRA LO switch turned ON. (recommended CAB: 810CLS)
A tube amp ideal for rock. (recommended CAB: 810CLS)
A tube amp whose basic character changes according to the setting of the value dial.
(recommended CAB: 118+112)
SCOOPED An amp that is typical of 80's sounds. (recommended CAB: 410MTL)
An amp that is typical of the LA sound. (recommended CAB: 410 LA)
GOLDPNL An amp distinctive for its eye-catching gold panel and clean sound.
(recommended CAB: 410MDN)
A combo amp favored by jazz bassists. (recommended CAB: 115JAZ)
A tube combo ideal for the Motown sound. (recommended CAB: 115STU)
A 100W tube amp made by Vox. (recommended CAB: 215TALL)
A silver-paneled US-made amp head from 1967. (recommended CAB: 215TALL)
UKMAJOR A 200W tube amp made in the UK. (recommended CAB: 415 UK, 412 UK)
The sound of a direct line connection, not passed through a cabinet.
410 LA
Four 10-inch speakers / LA sound cabinet model.
Four 10-inch speakers / modern-type cabinet model.
Four 10-inch aluminum-cone speakers / modern cabinet model.
Eight 10-inch speakers / classic-type cabinet model.
412 UK
Four 12-inch speakers / UK-manufactured cabinet model.
One 15-inch speaker studio combo cabinet model.
One 15-inch speaker jazz combo cabinet model.
Two 15-inch speakers / vertical cabinet model.
415 UK
Four 15-inch speakers / UK-manufactured cabinet model.
One 12-inch and one 18-inch speaker combination cabinet model.
Preamp set to a clear tone.
This effect dynamically applies an exciter according to your picking strength.
(This is especially effective when you want to give more sparkle to clean sounds.)
Distortion designed for bass.
This generates a pitch one octave lower than the original sound, and mixes it with the
original sound to add a sense of depth and low end. This effect may not operate correct-
ly if two or more strings are played simultaneously, or when low-pitched strings are
Low-pass filter type auto-wah.
(EFF.DEPTH left half: down sweep
Vintage stereo chorus.
Vintage flanger.
Vintage phaser.
Rotary speaker simulation.
Stereo delay.
Spring reverb.
Control Knobs
Adjusts amp gain. Simultaneously adjusts the compressor if the AMP TYPE is VALVE –
JAZZ, or the distortion if the AMP TYPE is STUDIO – UKMAJOR.
Adjusts amp high-frequency range.
Adjusts amp mid-frequency range.
Adjusts amp low-frequency range.
Adjusts amp volume.
EFF.DEPTH Adjusts effect depth.
Adjusts noise reduction depth. (Hold down the TAP button and turn EFF.DEPTH)
Selects one of five center frequencies for MIDDLE (mid-range). This can be set if the
AMP TYPE is VALVE – JAZZ (hold down the TAP button and turn MIDDLE)
If you are running into two channels of a mixer or using two amplifiers in stereo, use a
stereo to dual mono cable.
5. If you want to use an external foot switch to change user programs, manual settings or
bypass, connect the optional Korg PS-1 or PS-100 foot switch to the FOOT SW jack (16).
6. When you have finished making connections, turn on the power of the connected
equipment and adjust the volume.
Preset programs (11 programs)
1. Press the PRESET button (2) to light the LED.
2. Turn the AMP TYPE selector (4).
Preset programs with cabinets and effects appropriate for each amp type will be
User programs (PROG1, 2), Manual
1. Press the PROG/MANU button (3). Each time you press the button you will cycle
through the following three settings.
MANUAL (LED lit orange):
When you select Bypass, you will only hear the direct (unprocessed) sound of your bass.
When Ampworks is bypassed, the manual/program LED (PRESET or PROG/MANU) will
go dark.
To bypass Ampworks, hold down the PROG/MANU button (3) for about two seconds.
Press the PROG/MANU button once again to cancel bypass.
To create your own sound, you can either start with an existing program and modify it, or
create a sound from scratch. If you start with an existing program, select the desired
program, and then use the control knobs (6) to adjust the amp settings, or adjust the
effect and effect depth. You can also try changing the cabinet. Alternatively if you want to
create your sound from scratch, you can use the method described below. At this time
you may wish to press the PROG/MANU button (3) to select MANUAL.
1. Use the AMP TYPE selector (4) to select one of the eleven amp types.
2. Use the CABINET selector (5) to select one of the ten types of cabinet models.
The combination of amp type and cabinets will determine the basic tonal character of
the amp. Any cabinet model can be used with any amp model. Some recommended
combinations are in the "Effect parameter list." If you do not want to use effects, set
the EFF.DEPTH knob (8) to "0" (all the way to the left).
Effect parameter list
Using the unit in the following locations can result in a malfunction.
• In direct sunlight
• Locations of extreme temperature or humidity
• Excessively dusty or dirty locations
• Locations of excessive vibration
• Close to magnetic fields
Power supply
Please connect the designated AC adapter to an AC outlet of the correct voltage. Do not connect it to
an AC outlet of voltage other than that for which your unit is intended.
Interference with other electrical devices
Radios and televisions placed nearby may experience reception interference. Operate this unit at a
suitable distance from radios and televisions.
To avoid breakage, do not apply excessive force to the switches or controls.
If the exterior becomes dirty, wipe it with a clean, dry cloth. Do not use liquid cleaners such as
benzene or thinner, or cleaning compounds or flammable polishes.
Keep this manual
After reading this manual, please keep it for later reference.
Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment. If liquid gets into the equipment, it could
cause a breakdown, fire, or electrical shock.
Be careful not to let metal objects get into the equipment. If something does slip into the equipment,
unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where
the equipment was purchased.
CE mark which is attached to our company's products of AC mains operated apparatus until
December 31, 1996 means it conforms to EMC Directive (89/336/EEC) and CE mark Directive
And, CE mark which is attached after January 1, 1997 means it conforms to EMC Directive (89/
336/EEC), CE mark Directive (93/68/EEC) and Low Voltage Directive (73/23/EEC).
Also, CE mark which is attached to our company's products of Battery operated apparatus means
it conforms to EMC Directive (89/336/EEC) and CE mark Directive (93/68/EEC).
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
, right half: up sweep
cause harmful interference to radio communications. However, there is no guarantee that interfer-
ence 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
• Consult the dealer or an experienced radio/TV technician for help.
Unauthorized changes or modification to this system can void the user's authority to operate
this equipment.
This product has been manufactured according to strict specifications and voltage requirements
that are applicable in the country in which it is intended that this product should be used. If you
have purchased this product via the internet, through mail order, and/or via a telephone sale, you
must verify that this product is intended to be used in the country in which you reside.
WARNING: Use of this product in any country other than that for which it is intended could be
dangerous and could invalidate the manufacturer's or distributor's warranty.
Please also retain your receipt as proof of purchase otherwise your product may be disqualified
from the manufacturer's or distributor's warranty.
Selecting programs (sounds)
(LED lit green):
User-writable program 1
(LED lit red):
User-writable program 2
The current settings of the knobs and selectors
Creating your sound
CE mark for European Harmonized Standards
(for U.S.A.)


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   Summary of Contents for KORG Ampworks bass

  • Page 1

    *Proportion to TAP interval means that for example if FLANGE is selected, pressing 115JAZ One 15-inch speaker jazz combo cabinet model. unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where the equipment was purchased. 215TALL Two 15-inch speakers / vertical cabinet model.

  • Page 2

    Configuration 5. Si vous souhaitez utiliser une commande au pied pour commuter les programmes utilisateur, les réglages manuels ou le bypass, raccordez la commande au pied Korg en option PS-1 ou PS-100 à la Mise sous/hors tension prise FOOT SW (16).

  • Page 3

    7. EFFECT-Wahlschalter Wenn Sie den Ampworks nicht verwenden, trennen Sie immer das Netzteil von der Steckdose ab. Processor von Korg. Bitte lesen Sie die Anleitung vor dem Gebrauch sorgfältig durch, denn sie enthält Erzeugen Ihres Sounds alle Informationen für langen und störungsfreien Betrieb. Legen Sie die Anleitung nach dem Durchlesen Anschlüsse...

  • Page 4

    810CLS EXCITER VALVE2 810CLS DELAY CLASSIC SCOOPED 1.14 [Hz] CLASSIC 118+112 PHASER SCOOPED 410MTL OCTAVE LA STUD GOLDPNL 0.57 [Hz] LA STUD 410LA FLANGE GOLDPNL 410MDN PREAMP 5-12, Shimotakaido 1-chome, Suginami-ku, Tokyo, Japan C 2003 KORG INC. Printed in China...

  • Page 5

    JAZZ STUDIO 0.57 [Hz] JAZZ 115JAZ REVERB STUDIO 115STU CHORUS AC100 SILVER AC100 215TALL DIST SILVER 215TALL FILTER UKMAJOR 6.25 [Hz] UKMAJOR 415UK ROTARY Wanna remember how you set up your favourite programs? Well this is the place to do it! WORD TO THE WISE: There's only two panels you can fill out here so do yourself a favor by photocopying it and then keep a blank “master”...

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