Yamaha UDSTOMP User Manual

FCC INFORMATION (U.S.A.)

1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!

This product, when installed as indicated in the in­structions contained in this manual, meets FCC re­quirements. Modifications not expressly approved by
Yamaha may void your authority, granted by the FCC,
to use the product.

2. IMPORTANT: When connecting this product to acces­sories and/or another product use only high quality
shielded cables. Cable/s supplied with this product
MUST be used. Follow all installation instructions.
Failure to follow instructions could void your FCC
authorization to use this product in the USA.

3. NOTE: This product has been tested and found to
comply with the requirements listed in FCC Regula­tions, Part 15 for Class “B” digital devices. Compli­ance with these requirements provides a reasonable
level of assurance that your use of this product in a
residential environment will not result in harmful
interference with other electronic devices. This equip­ment generates/uses radio frequencies and, if not
installed and used according to the instructions found
in the users manual, may cause interference harmful
to the operation of other electronic devices. Compli­ance with FCC regulations does not guarantee that

* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.

CANADA

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

• This applies only to products distributed by Yamaha Canada Music Ltd.

• Ceci ne s’applique qu’aux produits distribués par Yamaha Canada Musique Ltée.

interference will not occur in all installations. If this
product is found to be the source of interference, which
can be determined by turning the unit “OFF” and “ON”,
please try to eliminate the problem by using one of the
following measures:

Relocate either this product or the device that is being
affected by the interference.

Utilize power outlets that are on different branch (circuit
breaker or fuse) circuits or install AC line filter/s.

In the case of radio or TV interference, relocate/reorient
the antenna. If the antenna lead-in is 300 ohm ribbon
lead, change the lead-in to co-axial type cable.

If these corrective measures do not produce satisfactory
results, please contact the local retailer authorized to
distribute this type of product. If you can not locate the
appropriate retailer, please contact Yamaha Corporation
of America, Electronic Service Division, 6600
Orangethorpe Ave, Buena Park, CA90620

The above statements apply ONLY to those products
distributed by Yamaha Corporation of America or its
subsidiaries.

ADVARSEL!

Lithiumbatteri—Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.

VARNING

Explosionsfara vid felaktigt batteribyte. Använd samma batterityp eller en ekvivalent typ som rekommenderas av
apparattillverkaren. Kassera använt batteri enlight fabrikantens instruktion.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.

The exclamation point within the equilat­eral triangle is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the product.

The lightning flash with arrowhead
symbol, within the 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
electrical shock.

2

• Dit apparaat bevat een lithium batterij voor geheugen back-up.

• This apparatus contains a lithium battery for memory back-up.

• Raadpleeg uw leverancier over de verwijdering van de batterij op
het moment dat u het apparaat ann het einde van de levensduur
afdankt of de volgende Yamaha Service Afdeiing:

• For the removal of the battery at the moment of the disposal at
the end of the service life please consult your retailer or Yamaha
Service Center as follows:

• Gooi de batterij niet weg, maar lever hem in als KCA.

• Do not throw away the battery. Instead, hand it in as small
chemical waste.

NEDERLAND / NETHERLAND

Yamaha Music Nederland Service Afdeiing
Kanaalweg 18-G, 3526 KL UTRECHT
Tel. [phone]

Yamaha Music Nederland Service Center
Address : Kanaalweg 18-G, 3526 KL UTRECHT
Tel : [phone]

IMPORTANT SAFETY INSTRUCTIONS

INFORMATION RELATING TO PERSONAL INJURY, ELECTRICAL SHOCK,

AND FIRE HAZARD POSSIBILITIES HAS BEEN INCLUDED IN THIS LIST.

WARNING-

uct, basic precautions should always be followed. These precau­tions include, but are not limited to, the following:

When using any electrical or electronic prod-

1. Read all Safety Instructions, Installation Instructions,

Special Message Section items, and any Assembly Instructions
found in this manual BEFORE making any connections, includ­ing connection to the main supply.

2. Do not attempt to service this product beyond that

described in the user-maintenance instructions. All other servic­ing should be referred to qualified service personnel.

3. Main Power Supply Verification: Yamaha products are

manufactured specifically for the supply voltage in the area
where they are to be sold. If you should move, or if any doubt
exists about the supply voltage in your area, please contact your
dealer for supply voltage verification and (if applicable) instruc­tions. The required supply voltage is printed on the name plate.
For name plate location, please refer to the graphic found in the
Special Message Section of this manual.

4. DANGER-Grounding Instructions: This product must

be grounded and therefore has been equipped with a three pin
attachment plug. If this product should malfunction, the ground
pin provides a path of low resistance for electrical current,
reducing the risk of electrical shock. If your wall socket will not
accommodate this type plug, contact an electrician to have the
outlet replaced in accordance with local electrical codes. Do
NOT modify the plug or change the plug to a different type!

5. WARNING: Do not place this product or any other

objects on the power cord or place it in a position where anyone
could walk on, trip over, or roll anything over power or connect­ing cords of any kind. The use of an extension cord is not
recommended! If you must use an extension cord, the minimum
wire size for a 25' cord (or less) is 18 AWG. NOTE: The smaller
the AWG number, the larger the current handling capacity. For
longer extension cords, consult a local electrician.

8. This product was NOT designed for use in wet/damp

locations and should not be used near water or exposed to rain.
Examples of wet /damp locations are; near a swimming pool,
spa, tub, sink, or wet basement.

9. This product should be used only with the components

supplied or; a cart ,rack, or stand that is recommended by the
manufacturer. If a cart, rack, or stand is used, please observe all
safety markings and instructions that accompany the accessory
product.

10. The power supply cord (plug) should be disconnected

from the outlet when electronic products are to be left unused
for extended periods of time. Cords should also be disconnected
when there is a high probability of lightening and/or electrical
storm activity.

11. Care should be taken that objects do not fall and liquids

are not spilled into the enclosure through any openings that may
exist.

12. Electrical/electronic products should be serviced by a

qualified service person when:

a. The power supply cord has been damaged; or
b. Objects have fallen, been inserted, or liquids have been

spilled into the enclosure through openings; or
c. The product has been exposed to rain; or
d. The product does not operate, exhibits a marked change

in performance; or
e. The product has been dropped, or the enclosure of the

product has been damaged.

13. This product, either alone or in combination with an

amplifier and headphones or speaker/s, 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 consult an audi­ologist.

6. Ventilation: Electronic products, unless specifically

designed for enclosed installations, should be placed in locations
that do not interfere with proper ventilation. If instructions for
enclosed installations are not provided, it must be assumed that
unobstructed ventilation is required.

7. Temperature considerations: Electronic products should

be installed in locations that do not seriously contribute to their
operating temperature. Placement of this product close to heat
sources such as; radiators, heat registers etc., should be avoided.

PLEASE KEEP THIS MANUAL

92-469-3

IMPORTANT: The louder the sound, the shorter the time

period before damage occurs.

14. Some Yamaha products may have benches and/or acces-

sory mounting fixtures that are either supplied as a part of the
product or as optional accessories. Some of these items are
designed to be dealer assembled or installed. Please make sure
that benches are stable and any optional fixtures (where appli­cable) are well secured BEFORE using. Benches supplied by
Yamaha are designed for seating only. No other uses are recom­mended.

3

Owner’s Manual

Thank you for purchasing the Yamaha UD-Stomp.

To fully understand the functions and to obtain maxi­mum life from this device, please read this Owner’s Manual
carefully before using. Also, after reading this manual
please keep it in a safe place for future reference.

Contents

Precautions ..................................................5

Nomenclature ............................................... 6

■ Top Panel ......................................................... 6

■ Rear Panel ....................................................... 9

Connections ............................................... 10

■ Connecting the Power.................................... 10

■ Connecting the UD-Stomp ............................. 10

■ Connecting Headphones ................................ 11

■ Digital Output .................................................. 11

■ Connecting an Expression (EXP) Pedal ......... 11

■ Connecting MIDI Devices ............................... 11

Using the UD-Stomp .................................. 12

■ Preparation .................................................... 12

• Selecting an Effect Band ................................ 13

• Setting the Delay Time .................................... 13

• Setting the Feedback ...................................... 14

• Setting the Filters ............................................ 14

• Setting the Pan ............................................... 14

• Setting the Delay Level ................................... 14

• Setting the Tap ................................................ 14

• Setting the Modulation .................................... 15

Connecting Multiple Effect Bands (CONNECT) ......

•

• Grouping Multiple Effect Bands (GROUP) ...... 16

• Syncing Multiple Effect Bands (SYNC) ........... 17

4

• Selecting a Wave (WAVE) .............................. 17

• Setting the Phase (PHASE) ............................ 18

• Setting the Effect and Direct Volume Levels ... 18

• Setting the Pan of the Direct Sound ............... 18

• Setting the Output Volume .............................. 18

Selecting and Saving Patches .................. 19

■ Try Selecting Another Patch .......................... 19

■ Create and Store a Patch .............................. 21

Convenient Functions ............................... 22

External Control Settings ..........................24

Utility Mode ................................................. 25

■ About the Utility Mode .................................... 25

■ MIDI Functions ............................................... 25

■ External Control Settings ............................... 26

■ EXP Pedal Settings ........................................ 27

Trouble Shooting ........................................ 28

Error Messages .......................................... 28

Specifications ............................................. 29

15

MIDI Implementation Chart ....................... 30

Precautions

• Avoid using the UD-Stomp in the following locations to prevent possible damage:

• In direct sunlight or next to heating equipment.

• In extremely cold or hot locations.

• Locations exposed to high humidity or excessive dust.

• Locations subject to strong shocks or vibration.

• Before making any connections, make sure that the power is switched OFF on the UD-Stomp
and any external devices.

• To protect speakers from possible damage, always set the OUTPUT knob to “0” before switching
the power ON/OFF.

• When connecting any devices to this unit, make sure that the power is switched OFF first.

• Do not apply excessive force to the switches, knobs and controls.

• The UD-Stomp is a precision device. Handle it with care and avoid dropping or jarring it.

• Operating temperatures will rise during use. Make sure the UD-Stomp is used in a well-ventilated
are.

• For safety, always remove the power adaptor from the AC wall outlet if there is any danger of
lightning striking in your area.

• Keep the UD-Stomp away from neon signs or fluorescent lighting to prevent noise pickup.

• To prevent damage and possibly electrical shock, never open the case and tamper with the
internal circuitry.

• Never use benzene, thinner or other volatile liquids for cleaning, as these chemicals may cause
damage or discoloration to the finish. Always use a dry, soft cloth to wipe off dust and dirt.

About the Backup Battery

A backup battery (lithium battery) is used to keep internal data (settings) from being lost, even when
the power cord is unplugged. Internal data will be lost when battery power is depleted, so it is recom­mended that data be stored to an external data recorder such as the Yamaha MIDI Data Filer MDF3
(→ page 26), or keep records of settings in memo form. The average battery life span is about 3
years. When replacement becomes necessary contact the music store where the unit was pur­chased, or a qualified service representative, to perform the replacement.

• Do not attempt to replace the backup battery by yourself.

• Keep the backup battery out of reach of children.

•“E5” appears in the display when the battery becomes depleted. Internal data may be lost.

• Data may be lost if the unit is improperly handled or if repairs are performed.

5

Nomenclature

■ Top Panel

Display & Main Section Controller Section

● Display & Main Section

q
w

t

q Up Button (UP)
w Down Button (DOWN)

Press to change the Patch Number by +1/-1. Hold
to change the Group Number by +1/-1. Simulta­neously press the [UP] and [DOWN] buttons to
switch between the USER ↔ PRESET Areas.
Also, their flashing lamps are used to indicate the
relationship between the patch data value and the
knob’s position.

6

Footswitch Section

e Utility Button (UTILITY)

Enters the Utility Mode. (→ page 25)

e
r

r Store Button (STORE)

Enters the Store Mode. (→ page 21)

t Display

Displays memory numbers, parameter setting val­ues, etc.

Nomenclature

● Controller Section

!4 !5 !6 !7 !8

o!0 !1 !2 !3

y

y ASSIGNABLE CONTROL

You can assign one of the functions of Effect Pa­rameter Controllers o - @0 to this knob. (→ page

24)

u EFFECT BAND 1-8

Switches the corresponding EFFECT BAND 1-8 ON/
OFF and selects an Effect Band for editing.

* To switch the effect ON→OFF, hold the button down until

“

oFF” appears in the display.

* You can also “tap” on the button to set the delay time ac-

cording to the tempo at which the button was tapped. (→
page 13)

The EFFECT BAND lamps will light in the following
manner to indicate the current condition of the Ef­fect Band’s settings.

• Lamp lights: Effect is ON

• Lamp off: Effect is OFF

• Lamp flashes (rapidly): Editing

• Lamp flashes (slowly): Input is switched OFF
(→ page 22)

* When an Effect Band is switched ON, holding the [FUNC-

TION] button and pressing the EFFECT BAND button will
switch the input for that Effect Band ON/OFF. However, when
a group is selected, only the Effect Band that is at the head of
the selected group can be switched ON/OFF.

In the Utility Mode, this button is used to select sys­tem settings such as Footswitch Functions, MIDI
Functions, etc.

i EDIT FUNCTION

These buttons are used to set parameters that de­termine how multiple Effect Bands are connected,
made into groups, synced and for setting the type
of modulation wave, etc.

• CONNECT: Connects Effect Bands

• GROUP: Groups multiple Effect Bands

• SYNC: Synchronizes the modulation speed be­tween multiple Effect Bands.

u i

!9

@0

• WAVE: Selects the modulation wave to be
used.

• FUNCTION: Provides access to the secondary
functions of those buttons or controllers that
have secondary functions (COPY, PASTE,
PHASE, CONTROL setting, DIRECT PAN).

The lamps indicate current parameter conditions for
the currently selected Effect Band.

Controllers o - !8 listed below are used to
settings for individual parameters for each
of the Effect Bands. Parameter changes will
be made to the Effect Band that is currently
selected with the EFFECT BAND Switch.
Also, when the selected Effect Bands are
combined into a Group, parameters o - !3
will be set in the Effect Band that is at the
head of the selected group.

o

Delay Time Control: Coarse (TIME COARSE)

!0 Delay Time Control: Fine (TIME FINE)

Sets the delay time.
The TIME COARSE knob is used to set the approxi­mate time while the TIME FINE knob is used to set
the precise time.

!1 LOW CUT FILTER Control

Sets the cut off frequency of the low cut filter. This is
used to cut frequencies that are lower than the cut
off frequency.
When the knob is rotated fully to the left (oFF) the
filter is OFF. Rotate the knob to the right to raise the
cut off frequency.

!2 HIGH CUT FILTER Control

Sets the cut off frequency of the high cut filter. This
is used to cut frequencies that are higher than the
cut off frequency.

@1

7

Nomenclature

When the knob is rotated fully to the left (oFF) the
filter is OFF. Rotate the knob to the right to lower
the cut off frequency.

!3 FEEDBACK Control

Sets the how many times the delay will repeat.

!4 TAP Control

Sets the timing for when the delayed sound is taken
from the delay loop.
The value of the parameter is expressed as a per­centage of the delay time setting.

!5 SPEED Control

Sets the speed of the modulation.
When multiple Effect Bands are Synced together,
this knob adjusts the phase angle.

!6 DEPTH Control

Sets the intensity of the modulation.

!7 PAN Control

Sets the position of the delay within the stereo field.

● Footswitch Section

!8 Delay Level Control (LEVEL)

Sets the output level of the delay.

* Rotating the knob fully to the left (0.0) mutes the delay sound.

Controllers !9 - @1 listed below are global pa-
rameters for Effect Bands 1-8. They can be
set at any time, even if no Effect Bands are
selected.

!9 EFFECT LEVEL Control

Sets the overall level of the signal sent to the effect.

@0 DIRECT LEVEL/DIRECT PAN Control

Sets the output level of the direct sound.
Hold the FUNCTION button and rotate this knob to
set the stereo position of the direct sound.

@1 OUTPUT Level Control

Controls the signal level that is sent from the UD­Stomp’s output jack (OUTPUT, PHONES).

@2 @3

@2 Footswitches 1, 2, 3

These are used to select a patch (1, 2, 3) in the
currently selected Group/Bank. The lamp for the
selected patch number will light. Pressing the
Footswitch that has its lamp lit will switch the effect
OFF as well as the Footswitch’s lamp.
Depending upon the BANK switch setting, these
switches can also be used to select the patch’s Area/
Group/Bank, set the Tap Tempo, and for the Sam­pling function.

* When the effect is switched OFF with the Footswitches 1, 2

or 3, the delayed sound up to that point will remain. When
the BYPASS switch is pressed to bypass the effect, the delay
sound will be muted momentarily.

8

@3

Bank Switch (BYPASS, BANK, TAP TEMPO)

• Press and release the switch quickly (BYPASS):

All Effect Bands are bypassed leaving only out­put of the direct sound. When the Bypass is switch
ON, the lamp lights.

* In the bypass mode, the input signal from the instrument is

sent directly to the output (DIRECT LEVEL and DIRECT PAN
settings will have no effect).

• Hold the switch until all footswitch lamps (1-3)
light (BANK):

Area/Group/Bank. (→ page 20)

• Hold the switch until “tAP” appears in the
display (TAP TEMPO

the delay time to the tempo at which the footswitch
is tapped. The Loop Sampling Function is also
available. (→ page 22)

Use Footswitches 1-3 to select an

):

Tap the Footswitch set

■ Rear Panel

Nomenclature

@4 @5 @6 @7 @8 @9 #0 #3#2

@4 Power Switch (STAND-BY ON/OFF)

Power switch for the main unit.

* To protect the speakers, set the OUTPUT knob @1 to “0”

before switching the power ON/OFF.

@5 Power Adaptor Jack (AC IN 12V 1A)

Connect the supplied power adaptor to this jack.

* Never use a power adaptor other than the supplied adaptor.

Use of any other power adaptor may cause damage, over­heating, fire, etc.

@6 MIDI OUT Jack

This jack is used for transmitting MIDI data from the
UD-Stomp such as control changes, program
changes, data in the UD-Stomp’s memory, etc. (→
page 26).

@7 MIDI IN Jack

This jack is used for receiving MIDI data from a MIDI
device, such as a MIDI foot controller, that can be
used to select patches, volume, or control each of
the effects in the UD-Stomp. (→ page 20)
Also, UD-Stomp memory data saved to an external
MIDI device can be returned to the UD-Stomp via
this jack. (→ page 26)

@8 DIGITAL OUT Jack

This Jack is used for sending the output of the UD­Stomp as digital data.
Connect to a device equipped with a digital input
jack (COAXIAL) such as a digital mixer, etc. (→ page

11).

#1

@9 Expression Pedal Jack (EXP. PEDAL)

This jack is used to connect a foot controller (ex­pression pedal) (optional) such as a Yamaha FC-7
to control individual UD-Stomp parameters. (→ page
24, 26, 27).

#0 Headphones Jack (PHONES)

Connect a pair of headphones (optional) to this jack
for private practice or practicing at night when you
don’t want to disturb others. (→ page 11).

* Even when headphones are used, the audio signal is

delivered from the OUTPUT jack
OUT jack

@8.

#1 Output Jacks (OUTPUT R, L/MONO)

The analog output jacks for the UD-Stomp. Con­nect these jacks to the input jack on a power ampli­fier + speaker set or guitar amp, mixer, etc. (→ page

10)

* Use the L/MONO jack when connecting to a monaural de-

vice.

#2 Input Level Switch (LOW/HIGH)
#3 INPUT Jack

This is the UD-Stomp’s input jack. Connect a guitar
or other electric musical instrument to this jack. Se­lect either HIGH or LOW to match UD-Stomp’s in­put jack to the output level of the instrument con­nected to the jack.

* Make sure the power is switched OFF before connecting the

instrument.

#1 and the DIGITAL

9

Connections

Before making any connections to any of the UD-Stomp’s INPUT and/or OUTPUT jacks,
make sure that the power on the UD-Stomp and all other devices is turned OFF to prevent
electrical shock or damage to the devices.

■ Connecting the Power

Use the supplied power adaptor (AC-10) to supply
power to the UD-Stomp.

1. Make sure the UD-Stomp’s Power Switch
(STAND-BY) is in the OFF ( ) position.

2. Connect the power adaptor’s plug to the AC IN
jack on the UD-Stomp.

3. Connect the power adaptor to an electric outlet.

OFF ( )

Supplied AC

Electrical
Outlet

Only use the supplied AC-10 adaptor to
power the unit.
Using another adaptor may result in dam­age, overheating or fire, which can be
very dangerous.

Make sure to use the recommended AC
voltage as indicated on the power adap­tor.

The supplied power adaptor AC-10 is de­signed specifically for use with the UD­Stomp. Never use this adaptor with any
other device.

Adaptor AC-10

■ Connecting the UD-Stomp

Since the UD-Stomp is a delay effect, it should be
connected to the end of the effect chain when used
with other effects. If the guitar amplifier or mixer you
are using is equipped with a Send/Return circuit,
we recommend that the UD-Stomp be connected to
these jacks.
The Input Level switch should be set according to
the output level of the device connected to the UD­Stomp (set to LOW if the device’s output level is
high, set to HIGH if the output is low).
Also, for maximum effect, connect the OUTPUT
jacks to a stereo system.
When connecting to a monaural device, make sure
you use the OUTPUT’s L/MONO jack.

● Connecting to the Effect Send and Re­turn circuit

INPUT

EFFECT

Instrument

Connecting at the end of an effects chain

●

Distortion, etc.

Instru­ment

UD-Stomp

SEND

Guitar Amplifier, etc.

INPUT

OUTPUT

L/MONO R

UD-Stomp

EFFECT
RETURN

LR

OUTPUT

L/MONO R

INPUT

LR

10

Power Amplifier & Speaker

Connections

■ Connecting Headphones

Connect a pair of headphones to the PHONES jack
(standard stereo) on the UD-Stomp to play or prac­tice in private.
The volume of the headphones can be controlled
with the OUTPUT knob.

* When a pair of headphones is connected, the output from the

OUTPUT jack and the DIGITAL OUT jack will still deliver
sound output.

When using headphones, use at a comfort­able volume so as not to cause shock to your
hearing.

■ Digital Output

The UD-Stomp is equipped with a DIGITAL output
jack (COAXIAL, 44.1 kHz), that can be connected
to the DIGITAL INPUT jack on a digital mixer, MD
recorder, etc.

* The output level of the DIGITAL OUT jack cannot be con-

trolled with the OUTPUT knob (fixed).

■ Connecting an Expression (EXP)
Pedal

A foot controller (expression pedal), such as the
Yamaha FC-7 (optional) connected to the UD­Stomp’s EXP. PEDAL jack allows control of the UD­Stomp’s individual parameters with your foot. (→
page 24, 26, 27)

■ Connecting MIDI Devices

The UD-Stomp’s MIDI IN/OUT jacks allow the ex­change of MIDI information between the UD-Stomp
and an external MIDI device.
Using MIDI you can take data from the UD-Stomp
and store it in a MIDI device such as the Yamaha
MIDI Data Filer MDF3, etc. or load data from the
external device into the UD-Stomp.
You can also use a MIDI foot controller, etc. con­nected to the UD-Stomp to select patches, control
individual parameters, etc., and an external MIDI
device can be controlled from the UD-Stomp. Refer
to the [Utility Mode] (page 25) for more information
on MIDI functions.

Digital Mixer, MD Recorder, etc.

11

Using the UD-Stomp

The UD-Stomp is an effects processor that is equipped with eight identical delay circuits.
It provides you with the power and freedom to create complex sounds by connecting multiple
delay circuits in a series, or combine any or all of the individual circuits into a single, long
delay, etc.
This section will use some of the UD-Stomp’s preset programs as examples to help you un­derstand how the parameters and functions work.

■ Preparation

1. Connect your instrument, amplifier, a pair of
headphones, etc. to the UD-Stomp. (→ page 10,

11)

Before making any connections, make sure
that the power is switched OFF on all devices.

2. Set the OUTPUT knob to “0”, and then set the
Power Switch (STAND-BY) to ON ( ).

If the Power Switch is switched ON with the OUT­PUT knob turned up, a sudden outburst of sound
due to the high volume setting may damage your
hearing, or damage devices connected to the unit
such as the amplifier, speaker, headphones, etc.

3. A 3-digit number, such as “011”, appears in
the display.

For now, use this patch program to get some
sound from the system, and adjust the sound
volume.
While playing your instrument, rotate the OUT­PUT knob to the right and adjust the volume to
an optimum level.

4. Let’s recall patch number “9.11” which is an

empty patch.
Press and hold the [DOWN] button, located to
the left of the display, and the Group number will
decrease one by one. If the number goes past
the Group number you want, press and hold the
[UP] button to increase the value by one. Simply
pressing the [UP]/[DOWN] button causes the
Patch number to increase/decrease by one.

Let’s try and set a delay.

12

These numbers (Group Number: 0, Bank Num­ber: 1, Patch Number: 1) refer to the currently
selected patch program.

Note: When the patch program number is shown

in the display, this condition is known as the
Play Mode. When in the Play Mode, it is pos­sible to select patches for playing and edit pa­rameters.

Using the UD-Stomp

Selecting an Effect Band

Let’s first select a delay circuit and set its param­eters.
The [EFFECT BAND 1-8] buttons are used to switch
the eight effect circuits ON/OFF.

1. Press the [EFFECT BAND 1] button to select

Effect Band 1 (the selected button’s lamp will
flash rapidly).

* When an EFFECT BAND button’s lamp is flashing rap-

idly, it indicates that that Effect Band is currently being
edited.

EFFECT BAND

687

Setting the Delay Time

Next, let’s set the Delay Time.
Use the TIME COARSE (rough setting) and TIME
FINE (precise setting) knobs to set the Delay Time.

2. In this step, we will set a delay time of 250msec.

Rotate the TIME COARSE knob until “200.”
appears in the display.

* The value for time used in the delay is msec (millisec-

onds). The dot indicates the position of the decimal point.

Example)

When the value is over 1000msec (no dot in the display),
the value in the display should be multiplied by 10.

Example)

If “0.02” is flashing in the display and the
[DOWN] lamp flashes when you rotate the knob,
it indicates that the knob’s position is not aligned
with the value set for the parameter. First ro­tate the knob all the way to the left, then rotate
to the right to set the value.

Using the Knobs

Since the position of each knob on the panel
is not always aligned with the value set in
the parameter of the current patch, please
follow the rules described below to align the
knob with the parameter value.

200. = 200 msec

123 = 1230 msec

• If the [UP] lamp flashes when the knob is rotated,
rotate the knob to the right (toward 10), and if the
[DOWN] lamp flashes, rotate the knob to the left
(toward 0).

At this time, the knob’s parameter value set in
the current patch is flashing in the display.

* As long as the lamp is flashing, neither the value in the

display nor the sound will change even though the knob
is being rotated.

• Continue rotating the knob in the direction de­scribed above. Once the knob has reached the
position that corresponds to the parameter value,
the value in the display and the [UP]/[DOWN]
lamp will stop flashing and the value will now
change according to the position of the knob.

* After you stop moving the knob, the value will continue

to be displayed for about 2 seconds, after which it will
return to the normal display.

• Once the knob is aligned with the value and can
be used to edit the value, rotating the knob will
result in the value shown in the display changing
in regards to the knob’s position and a relative
change in the effect’s sound.

These rules apply to all knobs with the ex­ception of the OUTPUT knob.

3. Next, rotate the TIME FINE knob so that “250.”

is shown in the display. If “200.” is flashing in
the display, rotate the knob all the way to the
left and then to the right as described in step 2
and above.

* The delay time of an individual Effect Band can be set to a

maximum of 696msec. Using the Group setting, a maxi­mum delay of 5890msec can be obtained by grouping all
8 Effect Bands together. (→ page 16)

* The delay time can also be set by tapping the [EFFECT

BAND 1-8] button twice in tempo, after the Effect Band
has been selected. The delay time will be set to the tempo
at which the button is pressed.

* You can also tap the Footswitch twice in tempo to set the

delay time to the tempo at which the Footswitch was
tapped. (→ page 22)

13

Using the UD-Stomp

Setting the Feedback

Up to this point we have set the delay time so a
single delay sound is produced 250msec after the
original sound. Next, set the Feedback parameter
to determine how many times the delay will repeat.

4. Rotate the FEEDBACK knob so that “10.0” ap-

pears in the display. The delay sound is re­peated infinitely without fading out.
When the FEEDBACK is set to a lower value,
the number of times the delay is repeated will
decrease and the delay sound will fade out.
In this step, set the FEEDBACK level to “5.0”.

Setting the Filters

The delay circuit also includes a HCF (High Cut Fil­ter) which, cuts high frequencies, and a LCF (Low
Cut Filter) which, cuts low frequencies. Since these
filters are incorporated in the delay loop, the cutting
of the effected frequencies will be greater each time
the delay is repeated.

5. Rotate the LOW CUT FILTER knob or HIGH

CUT FILTER knob and see how the filters
change the sound.

* For both knobs, a setting of 10 (10.0) equals a cutoff

frequency of 1kHz and setting of 0 equals off (

* The cutoff is also applied to the first delay.

The use of these filters offers analog simulation, etc.
Once you understand how the filters operate, set
both knobs to “oFF” and let’s move on to the next
step.

oFF).

Setting the Pan

The term “Pan” refers to the position of the delayed
sound within the stereo field of the left and right
speakers. Use the PAN knob to set the position of
the delayed sound somewhere between left (L10.),
center (C) and right (r10.) as shown in the illustra­tion below.

6. Rotate the PAN knob and see how the delay

sound moves between the left and right speak­ers.
Once you understand how the PAN knob oper­ates, set the PAN knob to “C” and let’s move
on to the next step.

PAN

LR

PAN

LR

PAN

LR

Setting the Delay Level

The LEVEL knob is used to control the volume level
of the delay sound.

7. First, rotate the FEEDBACK knob and set its

value to “0.0” so that it is easier to hear how
the sound changes.
Rotate the LEVEL knob and adjust the volume
level of the delay sound. Rotating the knob all
the way to the right (10.0) will make the delay’s
volume equal to the volume of the original
sound. Rotate the knob all the way to the left
(0.0) and the delay sound will not be heard.

Setting the Tap

In this case, the term “Ta p” refers to the timing at
which the delay sound is taken out of the delay loop.
Try the next steps and see how this effect works.

8. Use the [UP] button and recall patch “9.12”.

This patch will make it easy to understand how
this effect works.
In this patch a 360msec delay is already set to
both Effect Bands 1 and 2. Notice that the de­lay sound is louder than the original. That’s be­cause both delay sounds, which are heard si­multaneously, are set at the same level as the
original sound.

9. Press the [EFFECT BAND 1] button and rotate

the TAP knob to change Tap Value of Effect
Band 1.
When the value is around “66.6” % notice how
the sound of the two delays creates a shuffle
rhythm. What happens is the delay sound from
Effect Band 1 is being produced at 240msec,
which is 2/3 (66.6%) of its 360msec delay time.

14

Delay Circuit

TAP=66.6%

240msec

TAP=100%

360msec

Delay sound from

Original

Sound

10.

In this step, set the FEEDBACK of Effect Band
1 to “5.0”. Now the first delay is produced after
240msec but the delays that follow that are pro­duced at 360msec.

Original

Sound

Effect Band 1

240msec

360msec

Delay sound from Effect Band 1

Delay sound from
Effect Band 2

Delay sound from
Effect Band 2

TIME

Using the UD-Stomp

Setting the Modulation

Adding Modulation to the Delay Time causes the
delay sound’s pitch to change. This can be used to
create effects such as chorus, flanger, etc.

13.

Recall patch “9.11” again.

14.

Press the [EFFECT BAND 1] button and use
the TIME COARSE knob to set the delay time
to “600.”

15.

Set the SPEED knob to “4.0” and the DEPTH
knob to “10.0” and listen to the resulting sound.
The pitch of the delayed sound goes up and
down. This is a Modulation effect.

16.

To get a Chorus effect, set the delay time some­where between 5 and 20msec, then adjust the
SPEED (to make the pitch fluctuating) and
DEPTH (to increase the intensity of the effect).
Also, you create a richer sound by using mul­tiple Effect Bands or by changing the PAN posi­tion from right to left. Try varying these param­eters and see what you get.

17.

To get a Flanger effect, set the Delay Time
shorter than that for the Chorus effect (less than
5msec) then use the SPEED and DEPTH knobs
to produce the Flanger effect. To get a deeper
Flanger effect, increase the FEEDBACK level.

240

msec

360

msec

11.

Next, set the FEEDBACK of Effect Band 2 to
“5.0” as well. First press the [EFFECT BAND
2] button to select Effect Band 2, then use the
FEEDBACK knob. Now, the shuffle rhythm is
repeated.

12.

Now, try setting the PAN of Effect Band 1 all the
way to the left (L10.) and the PAN of Effect
Band 2 all the way to the right (r10.). Now
you’ve created a stereo ping-pong delay effect.

360

msec

360

msec

TIME

Connecting Multiple Effect Bands

(CONNECT)

Try connecting the 8 Effect Bands together. You can
create a wide variety of delays by connecting mul­tiple Effect Bands into series or parallel arrange­ments.

18.

Recall patch “9.13”. This patch uses two delay
circuits (Effect Bands 1 and 2) with a parallel
connection.
Effect Band 1 has a long delay of 600msec while
Effect Band 2 has a short delay time of 80msec.
FEEDBACK on both Effect Bands is set to 0.
Press the [EFFECT BAND 1] button (this se­lects Effect Band 1) then press the [CONNECT]
button at which time “in” appears in the dis­play. This indicates that the signal received by
the delay circuit of Effect Band 1 is coming di­rectly from the UD-Stomp’s INPUT jack. Effect
Band 2 is also set to “in”.

15

Using the UD-Stomp

Now Effect Bands 1 and 2 are connected as
shown in the illustration below.

You can hear a single short delay and a single
long delay being produced.

19.

Next, try and connect Effect Bands 1 and 2 in a
series.
Press the [EFFECT BAND 2] button, then hold
the [CONNECT] button and press the [UP] but­ton so that “1” is shown in the display.
The output signal of Effect Band 1 (the original
sound mixed with the delay sound) is now sent
to the input of Effect Band 2. Effect Band 1 and
Effect Band 2 are now connected in a series.

Now you can hear a short delay applied to both
the original sound and the long delay sound.

20.

Now let’s try and make a complex delay using
these two Effect Band circuits.
Set the Delay Time of Effect Band 2 to 419msec
and increase the FEEDBACK of both Effect
Bands equally. With the two Effect Bands con­nected in a series, the delay effect becomes
more and more complex as the delay is re­peated. Try changing Delay Time for each Ef­fect Band to create some other effects.

* Parallel and series connections can be mixed together. You

• Example Connections

IN

BAND 1

16

IN

BAND 1

IN

BAND 2

IN

BAND 1

can also synchronize the modulation between Effect Bands
(→ page 17) to create a more complex delay effect.

IN

IN

IN

IN

IN

IN

IN

IN

1

BAND 2

BAND 1

BAND 2

BAND 3

BAND 4

BAND 5

BAND 6

BAND 7

BAND 8

1

BAND 2

BAND 3~7

7

BAND 8

IN

IN

IN

IN

IN

BAND 1

BAND 8

BAND 3

BAND 4

BAND 1

1

8

3

4

4

BAND 4

BAND 5

BAND 6

BAND 2

BAND 3

4

5

BAND 7

BAND 2

2

2

3

3

BAND 5

BAND 6

BAND 7

BAND 8

Grouping Multiple Effect Bands

(GROUP)

The Group function makes possible longer delay
times by combining multiple Effect Bands into a
single delay circuit.

21.

Let’s try and make a long delay time.
Recall patch “9.11” and press the [EFFECT
BAND 1] button, then use the TIME COARSE
knob and TIME FINE knob to set the delay time
to its maximum of “696.”msec.

22.

Hold the [GROUP] button and use the [UP] but­ton to set the parameter to “1-2”.
Now Effect Bands 1 and 2 are combined into a
single delay circuit that is referred to as a Group.
Notice now that the delay time is longer. Rotate
the TIME COARSE knob a little and notice that
the Delay Time shown in the display is “143”
(1430msec). Using this method, you can group
together all 8 Effect Bands (set to “1-8”) to
create a maximum delay of “589” (5890msec).

* When creating a Group, you must first select the Effect

Band that will be at the head of the Group, then assign the
Effect Band that is at the end of the Group.

BAND 1

696msec

Delay Output Delay Output

BAND 1-2

1430msec

Delay Output Delay Output

BAND 2

696msec