(class B)

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
* This applies only to products distributed by YAMAHA CORPORATION OF AMERICA.
This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numrique de la classe B est conforme la norme NMB-003 du Canada.

OBSERVERA!

Apparaten kopplas inte ur vxelstrmskllan (ntet) s lnge som den ar ansluten till vgguttaget, ven om sjlva apparaten har stngts av.
ADVARSEL: Netspendingen til dette apparat er IKKE
afbrudt, slenge netledningen siddr i en stikkontakt, som er t endt ogs selvom der or slukket p apparatets afbryder.
VAROITUS: Laitteen toisiopiiriin kytketty kyttkytkin ei irroita

koko laitetta verkosta.

(standby)

PRECAUTIONS

PLEASE READ CAREFULLY BEFORE PROCEEDING
* Please keep these precautions in a safe place for future reference.

WARNING

Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages, fire or other hazards. These precautions include, but are not limited to, the following:
Do not open the instrument or attempt to disassemble the internal parts or modify them in any way. The instrument contains no user-serviceable parts. If it should appear to be malfunctioning, discontinue use immediately and have it inspected by qualified Yamaha service personnel. Do not expose the instrument to rain, use it near water or in damp or wet conditions, or place containers on it containing liquids which might spill into any openings. If the AC adaptor cord or plug becomes frayed or damaged, or if there is a sudden loss of sound during use of the instrument, or if any unusual smells or smoke should appear to be caused by it, immediately turn off the power switch, disconnect the adaptor plug from the outlet, and have the instrument inspected by qualified Yamaha service personnel. Use the specified adaptor (PA-3B, PA-3C or an equivalent recommended by Yamaha) only. Using the wrong adaptor can result in damage to the instrument or overheating. Before cleaning the instrument, always remove the electric plug from the outlet. Never insert or remove an electric plug with wet hands. Check the electric plug periodically and remove any dirt or dust which may have accumulated on it. Do not put burning items, such as candles, on the unit. A burning item may fall over and cause a fire.

CAUTION

Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the instrument or other property. These precautions include, but are not limited to, the following:
Do not place the AC adaptor cord near heat sources such as heaters or radiators, and do not excessively bend or otherwise damage the cord, place heavy objects on it, or place it in a position where anyone could walk on, trip over, or roll anything over it. When removing the electric plug from the instrument or an outlet, always hold the plug itself and not the cord. Do not connect the instrument to an electrical outlet using a multiple-connector. Doing so can result in lower sound quality, or possibly cause overheating in the outlet. Unplug the AC power adaptor when not using the instrument, or during electrical storms. Always make sure all batteries are inserted in conformity with the +/- polarity markings. Failure to do so might result in overheating, fire, or battery fluid leakage. Always replace all batteries at the same time. Do not use new batteries together with old ones. Also, do not mix battery types, such as alkaline batteries with manganese batteries, or batteries from different makers, or different types of batteries from the same maker, since this can cause overheating, fire, or battery fluid leakage. Do not dispose of batteries in fire. Do not attempt to recharge batteries that are not intended to be charged. When the batteries run out, or if the instrument is not to be used for a long time, remove the batteries from the instrument to prevent possible leakage of the battery fluid. Keep batteries away from children. If the batteries do leak, avoid contact with the leaked fluid. If the battery fluid should come in contact with your eyes, mouth, or skin, wash immediately with water and consult a doctor. Battery fluid is corrosive and may possibly cause loss of sight or chemical burns. Before connecting the instrument to other electronic components, turn off the power for all components. Before turning the power on or off for all components, set all volume levels to minimum. Also, be sure to set the volumes of all components at their minimum levels and gradually raise the volume controls while playing the instrument to set the desired listening level. Do not expose the instrument to excessive dust or vibrations, or extreme cold or heat (such as in direct sunlight, near a heater, or in a car during the day) to prevent the possibility of panel disfiguration or damage to the internal components. Do not use the instrument near other electrical products such as televisions, radios, or speakers, since this might cause interference which can affect proper operation of the other products. Do not place the instrument in an unstable position where it might accidentally fall over. Before moving the instrument, remove all connected adaptor and other cables.

(battery)

When cleaning the instrument, use a soft, dry cloth. Do not use paint thinners, solvents, cleaning fluids, or chemical-impregnated wiping cloths. Also, do not place vinyl, plastic or rubber objects on the instrument, since this might discolor the panel or keyboard. Do not rest your weight on, or place heavy objects on the instrument, and do not use excessive force on the buttons, switches or connectors. Do not operate the instrument for a long period of time at a high or uncomfortable volume level, since this can cause permanent hearing loss. If you experience any hearing loss or ringing in the ears, consult a physician. Yamaha cannot be held responsible for damage caused by improper use or modifications to the instrument, or data that is lost or destroyed. Always turn the power off when the instrument is not in use. Make sure to discard used batteries according to local regulations. The illustrations as shown in this owners manual are for instructional purposes only, and may be different from the ones on your instrument. Any mention or reference to the DD-20 in this manual also applies to the model DD-20S.
Entsorgung leerer Batterien (nur innerhalb Deutschlands)
Leisten Sie einen Beitrag zum Umweltschutz. Verbrauchte Batterien oder Akkumulatoren drfen nicht in den Hausmll. Sie knnen bei einer Sammelstelle fr Altbatterien bzw. Sondermll abgegeben werden. Informieren Sie sich bei Ihrer Kommune.

Welcome

Congratulations! You are now the proud owner of a powerful new musical instrument capable of inspiring and fueling your musical creativity. This is not just another digital percussion instrument. The DD-20 is the result of passion, vision, and commitment from people who want you to enjoy yourself every time you play it. Were sure youll agree as you discover the limitless possibilities of your new digital percussion instrument! Keep this manual in a safe place for future reference.

Contents

The DD-20 At a Glance.. 6 Setting Up... 7 Playing the Demo... 8 Percussion Set.. 8 Pad Assign... 9 Style... 9 Tempo... 10 Tap Start... 10 Auto Roll... 11 Sound Effect... 11 Troubleshooting... 12 Specifications.. 12 Percussion Set List... 13 Voice List... 13

Taking Care of the DD-20

Avoid Heat
Avoid placing the DD-20 near windows, heaters or other areas subject to excessive heat or in a car exposed to direct sunlight.

Avoid Dust and Moisture

Avoid locations where the DD-20 is likely to be exposed to excessive dust or moisture.

Avoid Physical Shocks

Do not subject the DD-20 to strong physical shocks and avoid placing heavy objects on it.
Avoid Television and Radio Interference
The DD-20 contains digital circuitry and may cause interference if it is placed too close to radio or television receivers. If interference occurs, move the DD-20 farther away from the affected receiver(s).

Cleaning the DD-20

Use only a soft, dry or slightly damp cloth to clean the DD-20. Never use solvents or thinners to clean the instrument.

Avoid Power Cord Damage

Do not place the DD-20 where somebody is liable to step on, trip over or crush the power cord or any other connecting cables.

Making Connections

Before making any connections, turn off the power of the DD-20 and any other equipment. Lower the volume on all audio equipment to the minimum level when turning the power on.

The DD-20 At a Glance

Front View
LED display LED display shows, the selected Style, Volume, Percussion Set, Tempo, Sound Effect, Auto Roll, and other settings.
STYLE LIST 00-05 DANCE 06-09 HOUSE 10-13 HIP HOP 14-16 RAP 17-19 DISCO 20-23 POP ROCK 24-26 HARD ROCK 27-28 HEAVY METAL 29-31 CONTEMPO. ROCK
32-BEAT 36-BEAT 40-43 ROCK SHUFFLE PROGRE. ROCK PUNK ROCK TECHNO ROCK LATIN ROCK BEAT
57-60 FUNK 61-65 SWING 66-67 JAZZ BALLAD 68-71 FUSION 72-73 BOSSA NOVA 74-76 SAMBA 77-79 SALSA 80-81 REGGAE 82 CALYPSO MERENGUE
BEGUINE RHUMBA MAMBO CHA-CHA TANGO

89-90 AFRICAN 91 COUNTRY

48-50 ROCK' N' ROLL 51-53 RHYTHM & BLUES 54-56 SOUL
92-93 MARCH 94-96 WALTZ 97-99 METRONOME

STYLE / PERC.SET / TEMPO

SELECTOR
STYLE PERC.SET TEMPO DEMO

SOUND EFFECT PADS

VOLUME
TAP START STANDBY ON START/ STOP

PAD ASSIGN

SE SELECT

AUTO ROLL

OFF ECHO FLAM ROLL
STYLE list The Style list is on the front panel for easy reference. STANDBY/ON switch To turn on the DD-20, move the STANDBY/ON switch to the right; to turn it off move the STANDBY/ON switch to the left.
SOUND EFFECT pads The DD-20 has four Sound Effect pads featuring a total of 16 realistic sound effects.
VOLUME buttons The volume of the DD20 is controlled by the two VOLUME buttons. The maximum volume is automatically set when you turn on the power. Holding down either the or button decreases or increases -6dB the volume -9dB rapidly. -12dB

-15dB -18dB -21dB -24dB

SELECTOR dial The SELECTOR dial can be an extremely quick way to adjust the Percussion Set, Pad Assignment, Auto Rhythm Style, Tempo and Sound Effect sets. Refer to each section appropriately, for details.
Operating buttons STYLE (See page 9.) PERC. SET (See page 8.) TEMPO (See page 10.) DEMO (See page 8.) TAP START (See page 10.) PAD ASSIGN (See page 9.) SE SELECT (See page 11.) START/ STOP (See pages 8, 9 and 10.) AUTO ROLL (See page 11.)

Side View

Supplied Accessories
+ DC IN _ 10-12V HEAD PH AUX. ONES/ OUT

Percussion Sticks

_ + DC IN 10-12V

HEADPHONES/ AUX. OUT

Setting Up
Supplying Power Percussion Pads
Striking two percussion pads at the same time produces simultaneous sounds according to the voices assigned to the respective pads. The DD-20 will operate on either an optional power adaptor or optional batteries.
M To connect a power adaptor:
1. Connect only the Yamaha PA-3B or PA3C power adaptor to the DC IN jack of the DD-20. 2. Plug the power adaptor into an AC power outlet.

Sensitivity

The DD-20s main percussion pads feature touch sensors so that they respond just like acoustic percussion instruments. Striking the percussion pads with different force results in relatively loud or soft sounds accordingly. Be careful not to strike the pads with excessive force as this may seriously damage the percussion pad sensors.
WARNING Use ONLY the Yamaha PA-3B, PA-3C AC Power Adaptor (or other adaptor specifically recommended by Yamaha) to power your instrument from the AC mains. The use of other adaptors may result in irreparable damage to both the adaptor and the DD-20. CAUTION Unplug the AC Power Adaptor when not using the DD20, or during electrical storms.

Headphones

You can use a standard pair of stereo headphones, such as Yamahas HPE-3 or HPE150, with the DD-20 for private practice. To connect headphones insert the headphone plug into the HEADPHONES/AUX. OUT jack. The DD-20s internal speakers will switch off automatically when you plug in a pair of headphones.

M To insert batteries:

1. Remove the battery compartment cover located on the bottom of the DD-20.
2. Insert six (6) 1.5 V AA (R-6, SUM-3) or equivalent batteries into the battery compartment. Make sure the polarities are lined up as indicated in the battery compartment.
3. Replace the battery compartment cover securely.
CAUTION Never mix old and new batteries or different types of batteries (e.g., alkaline and manganese).
To prevent possible damage from battery leakage, remove the batteries from the instrument if it is not to be used for a long time.

When the batteries are low, replace with a complete set of six new batteries. Never mix old and new batteries or different types of batteries. The batteries are low when the DD-20s voices become noticeably distorted or the DD-20 resets to default settings unexpectedly. 7
Playing the Demo Percussion Set
To give you an idea of the DD-20s sophisticated capabilities, it comes with a demonstration song.
w To play back the demonstration song:
1. Press the DEMO button.
The DD-20 allows you to choose from ten different Percussion Sets quickly and easily. Nine Percussion Sets have preset voice combinations. (See Percussion Set List on page 13.). The DD-20 has one Custom Percussion Set allowing you to combine any four of the DD20s voices into a set. (See Pad Assign on page 9.)
w To select a Percussion Set:
1. Press the PERC. SET button to enter the Percussion Set mode.
2. To stop playback, press either the DEMO button again or the START/STOP button.

START/ STOP

PERC.SET
The current Percussion Set number appears in the LED display. You have approximately three seconds after the PERC. SET button is released to start selecting a Percussion Set before the DD-20 returns to the Auto Rhythm Style mode. 2. Press the PERC. SET button repeatedly or turn the SELECTOR dial until the desired Percussion Set number appears in the LED display.
You can begin playing the DD-20s percussion pads as soon as you turn the STANDBY/ON switch on and adjust the volume to an appropriate level.
The Percussion Set numbers only cycle forward when you press the PERC. SET button. The SELECTOR dial turns either clockwise or counterclockwise and the Percussion Set numbers cycle up or down accordingly.
t Percussion Sets appear in the LED display as P0P9. P0 is the Custom Percussion Set and P1-P9 represent different combinations of four voices. t Percussion Set P1 is automatically selected when the power is turned on.

Pad Assign

The DD-20 contains a total of 55 high quality voices that can be assigned to each of the four percussion pads. The Custom Set pad assignment allows any combinations of the 55 voices.
The DD-20 features a large variety of Auto Rhythm Styles including variations of basic 8 and 16 beat patterns as well as more exotic styles such as Son Afro and Calypso. You can play along with any of the DD-20 Auto Rhythm Styles. (See the front panel for the Style list.)
w To assign a voice to a percussion pad:
1. Strike the percussion pad to which you want to assign a voice.

STYLE LIST 00-05 DANCE 06-09 HOUSE 10-13 HIP HOP 14-16 RAP 17-19 DISCO 20-23 POP ROCK 24-26 HARD ROCK 27-28 HEAVY METAL 29-31 CONTEMPO. ROCK 32-BEAT 36-BEAT 40-43 ROCK SHUFFLE PROGRE. ROCK PUNK ROCK TECHNO ROCK LATIN ROCK BEAT 57-60 FUNK 61-65 SWING 66-67 JAZZ BALLAD 68-71 FUSION 72-73 BOSSA NOVA 74-76 SAMBA 77-79 SALSA 80-81 REGGAE 82 CALYPSO MERENGUE 88 BEGUINE RHUMBA MAMBO CHA-CHA TANGO
w To select and play back an Auto Rhythm Style:
1. Press the STYLE button repeatedly or turn the SELECTOR dial until the desired Auto Rhythm Style number appears in the LED display.
2. Press and hold either the Q or W PAD ASSIGN button.
The currently assigned voice number is shown in the LED display. 3. While holding either PAD ASSIGN button, strike the same percussion pad repeatedly or turn the SELECTOR dial until the desired voice number appears in the LED display. (See the Voice List on page 13.)
The Auto Rhythm Style numbers only cycle forward when you press the STYLE button. The SELECTOR dial turns either clockwise or counterclockwise and the Auto Rhythm Style numbers cycle up or down accordingly. 2. Press the START/STOP button.
The currently selected Auto Rhythm Style plays back. Voice numbers cycle from 00 to 54 to 00 when striking the percussion pad. The Q PAD ASSIGN button decreases the voice number and the W PAD ASSIGN button increases the voice number. 4. Release the Q or W PAD ASSIGN button. A new voice is now assigned to the designated percussion pad. 5. Repeat steps 1 to 4 for any or all of the other DD-20 percussion pads to set the four percussion pads to the desired voice(s).
t The DD-20 always returns to Custom Set P0 when assigning voices to a percussion pad. t All pad assignment changes are memorized in Custom Set P0 until the power is turned off. 9
To stop playback, press the START/STOP button again.
t You can select another Auto Rhythm Style or enter the Tempo, Percussion Set or Sound Effect Set mode while any Auto Rhythm Style is playing. t Auto Rhythm Style Dance 1 is automatically selected and 00 appears in the LED display when the power is turned on. t Auto Rhythm Style 00 is selected and appears automatically in the LED display when the demonstration song is stopped.
The tempo can be adjusted in 35 steps, from 40 to 280 beats per minute (bpm). The steps are shown in the LED display as values from 01 to 35. The default tempo varies according to Auto Rhythm Style.

Tap Start

The DD-20 features a Tap Start function that sets the overall tempo depending on how fast you strike the percussion pads. This is an advanced feature that is very useful for coordinating your playing tempo with the selected Auto Rhythm Style tempo.

w To adjust the tempo:

1. Press the TEMPO button to enter the Tempo mode.
w To set the tempo with Tap Start:
1. Press the TAP START button to enter the Tap Start mode.

TAP START

The currently selected Tempo value appears in the LED display and the right Tempo dot lights. You have approximately three seconds after releasing the TEMPO button to start adjusting the tempo setting before the DD-20 returns to Auto Rhythm Style mode. 2. Press the TEMPO button repeatedly or turn the SELECTOR dial until the desired tempo value appears in the LED display.
The left Tempo dot flashes at the current tempo indicating that you are in Tap Start standby mode. To cancel the Tap Start mode, press the TAP START button again. 2. Strike any percussion pad three or four times depending on the time signature of the selected Auto Rhythm Style. 3. Playback of the currently selected Auto Rhythm Style will start at the desired tempo right after the third or fourth strike on the percussion pad. 4. To stop playback, press the START/STOP button. To stop playback and enter Tap Start standby mode, press the TAP START button.
The tempo values only cycle forward when you press the TEMPO button. The SELECTOR dial turns either clockwise or counterclockwise and the tempo values cycle up or down accordingly. The range of available tempos is from 40 to 280 bpm. You can change the current tempo while any Auto Rhythm Style is playing.

LED display Tempo Dots

The DD-20 has two tempo lights in the top of the LED display. During Auto Rhythm Style playback, the two lights flash in a specific pattern so you can keep the beat easily. The tempo lights flash as follows: 1st measure 1st Beat 2nd measure 2nd Beat 3rd Beat 4th Beat

Auto Roll

The DD-20 is equipped with three Auto Roll effects that help enhance your playing. The effects include ECHO, FLAM and ROLL. Each of these effects varies according to the selected tempo so that the initial strike starts the effect and the DD-20 keeps the beat throughout the effects duration. Auto Roll effects work only with the percussion pads.

Sound Effect

The DD-20 has four sound effect pads that feature 16 realistic and versatile sound effects. A set of four different sound effects, represented by the symbols printed on the DD-20s front panel, is available for each sound effect pad.
w To select different sound effects:
1. Press the SE SELECT button to enter the Sound Effect mode.
w To select an Auto Roll effect:
1. Press the AUTO ROLL button once to enter the Auto Roll mode.

The current sound effect set number will appear in the LED display. You have approximately three seconds, after releasing of the SE SELECT button to start selecting the sound effect setting before the DD-20 returns to the Auto Rhythm Style mode. 2. Press the SE SELECT button repeatedly or turn the SELECTOR dial until the desired sound effect set number appears in the LED display.
The current Auto Roll setting will appear in the LED display for approximately 3 seconds. 2. Select an effect from the list next to the AUTO ROLL button and press the AUTO ROLL button in succession until the desired effect setting appears in the LED display. The Auto Roll OFF setting is automatically selected when the power is turned on.
t The Auto Roll function may produce unexpected effects or not produce any effect at all, depending on the voice selected and the tempo setting.

Effect Setting

Description
No Auto Roll effects are assigned. The DD-20 will produce a fading echo sound automatically. The DD-20 will produce a double note (called a flam) for every single note you play. The DD-20 will produce a drum roll synchronized with the tempo setting. Each time you strike a percussion pad a roll will follow.
The sound effect set numbers only cycle forward from E1 to E4 when you press the SE SELECT button. The SELECTOR dial turns either clockwise or counterclockwise and the sound effect set numbers cycle up or down accordingly.

(ECHO)

(FLAM)

(ROLL)

Troubleshooting Specifications
In many cases, seemingly big problems or malfunctions can be remedied easily. Please check the following list before deciding that your DD-20 is broken. If the problem is not listed here or the suggested remedy is ineffective, take the DD-20 to an authorized Yamaha dealer for proper diagnosis and repairs. Do not attempt to repair this digital percussion instrument as serious damage may occur.
A buzz or click occurs momentarily when the DD20 is turned ON or OFF. This is a normal power surge noise that occurs when the STANDBY/ON switch is operated. The LED display is completely dark. The batteries are low and should be replaced immediately. No sound comes from the speakers. The volume is turned down too low and should be adjusted up appropriately. A plug is inserted into the HEADPHONES/AUX. OUT jack and should be taken out immediately. The wrong voice plays when you strike a percussion pad. The desired voice has not been assigned to the percussion pad. Use the PAD ASSIGN function to program the desired voice to the appropriate percussion pad. The custom pad voice assignments have disappeared or defaulted. The batteries are low and should be replaced immediately. The STANDBY/ON switch has been turned STANDBY and ON and the default voices have replaced the desired voices. Use the PAD ASSIGN function to program the desired voices again. When the percussion pads are struck, the LED display goes dark momentarily and then changes to the default reading 00. The batteries are low and should be replaced immediately. Percussion pads 4 (touch sensitive) SE pads 4 Percussion sets 9 preset + 1 custom Auto Rhythm Styles 100 Instrument and Sound Effect Voices 55 Auxiliary Functions Tap Start, Auto Roll, Auto Rhythm Style, Demonstration Song Panel Controls STANDBY/ON switch, SELECTOR dial, VOLUME buttons, STYLE button, PERC. SET button, TEMPO button, TAP START button, PAD ASSIGN buttons, START/STOP button, AUTO/ROLL button, SE SELECT button, DEMO button LED Display STYLE/PERCUSSION SET/ TEMPO and other settings Connectors DC IN 10-12V Headphones/AUX.OUT Main amplifier 3.8W (EIAJ) Speaker 10.0cm Power Supply AC power adaptor YAMAHA PA-3B or PA-3C (sold separately) Batteries Six AA size, R-6, or equivalent batteries (sold separately) Dimensions (W x D x H) 435mm x 236mm x 160mm (17 1/8 x 9 1/4 x 6 1/3) Weight 1.4 Kg (3 lbs., 1oz.) Supplied accessories Percussion Sticks * Specifications and descriptions in this owners manual are for information purposes only. Yamaha Corp. reserves the right to change or modify products or specifications at any time without prior notice. Since specifications, equipment or options may not be the same in every locale, please check with your Yamaha dealer.

Percussion Set List

Name P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 CUSTOM SET 01 BASIC SET FILL IN SET ROCK SET DANCE SET LATIN SET 1 LATIN SET 2 LATIN SET 3 EFFECT SET REMIX SET 04 PAD 1 Bass Drum 2 Bass Drum 1 Snare 1 Bass Drum 2 Bass Drum 3 Conga Mute Timbale Hi Agogo Hi SFX 1 Snare 05 PAD 2 Snare 2 Snare 1 E. Tom 1 Hi Snare 2 Snare 3 Conga Hi Timbale Low Agogo Low SFX PAD 3 E. Tom 1 Hi 18 PAD 4 Crash Cymbal Ride Cymbal Crash Cymbal Crash Cymbal Orchestra Hit Cabasa Crash Cymbal Hand Clap Orchestra Hit Crash Reverse
Hi-Hat (Closed) E. Tom 1 Low Tom Low E. Tom 2 Conga Low Cowbell Cuica SFX 3 Crash Cymbal 49 19

Snare Reverse 18

The DD-20 percussion pads are numbered 1-4 from left to right.

Voice List

Type Bass Drums No. 04 Snare Drums Toms Percussion 27 Voice Bass Drum 1 (Normal) Bass Drum 2 (Heavy) Bass Drum 3 (Electric) Snare 1 (Normal) Snare 2 (Heavy) Snare Reverse Snare 3 (Electric) Rim Shot Tom Hi Tom Low E. Tom 1 Hi E. Tom 1 Low E. Tom 2 Hi-Hat (Closed) 1 Hi-Hat (Open) 1 Hi-Hat (Closed) 2 Hi-Hat (Open) 2 Ride Cymbal Crash Cymbal Crash Cymbal Reverse Conga Hi Conga Low Conga Mute Agogo Hi Agogo Low Cabasa Cowbell Cuica 13 Sound Effects Type No. 54 Voice Timbale Hi Timbale Low Finger Snap Hand Clap Cross Sticks Metronome One Reverse Voice Two Three Four Gorilla Cat Dog Horse SFX 1 SFX 2 SFX 3 Beep Alarm Applause Orchestra Hit Telephone Horn Laughter Breaking Glass Metronome Accent

Percussion

Hi-Hats

Cymbals

Any of the above voices can be assigned to each of the four percussion pads.
For details of products, please contact your nearest Yamaha representative or the authorized distributor listed below. Pour plus de dtails sur les produits, veuillez-vous adresser Yamaha ou au distributeur le plus proche de vous gurant dans la liste suivante.
Die Einzelheiten zu Produkten sind bei Ihrer unten aufgefhrten Niederlassung und bei Yamaha Vertragshndlern in den jeweiligen Bestimmungslndern erhltlich. Para detalles sobre productos, contacte su tienda Yamaha ms cercana o el distribuidor autorizado que se lista debajo.

NORTH AMERICA

CANADA
Yamaha Canada Music Ltd. 135 Milner Avenue, Scarborough, Ontario, M1S 3R1, Canada Tel: 416-298-1311

FRANCE

Yamaha Musique France, S.A. Division Professionnelle BP 70-77312 Marne-la-Valle Cedex 2, France Tel: 01-64-61-4000

HONG KONG

Tom Lee Music Co., Ltd. 11/F., Silvercord Tower 1, 30 Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: 2737-7688
Yamaha Musica Italia S.P.A. Combo Division Viale Italia 88, 20020 Lainate (Milano), Italy Tel: 02-935-771

U.S.A.

Yamaha Corporation of America 6600 Orangethorpe Ave., Buena Park, Calif. 90620, U.S.A. Tel: 714-522-9011

TAIWAN

Yamaha KHS Music Co., Ltd. 3F, #6, Sec.2, Nan Jing E. Rd. Taipei. Taiwan 104, R.O.C. Tel: 02-2511-8688

NORWAY

Norsk lial av Yamaha Scandinavia AB Grini Nringspark 1 N-1345 sters, Norway Tel: 77 70

EUROPE

THE UNITED KINGDOM
Yamaha-Kemble Music (U.K.) Ltd. Sherbourne Drive, Tilbrook, Milton Keynes, MK7 8BL, England Tel: 01908-366700

THAILAND

Siam Music Yamaha Co., Ltd. 121/60-61 RS Tower 17th Floor, Ratchadaphisek RD., Dindaeng, Bangkok 10320, Thailand Tel: 02-641-2951

ICELAND

Skifan HF Skeifan 17 P.O. Box 8120 IS-128 Reykjavik, Iceland Tel: 525 5000

IRELAND

Danfay Ltd. 61D, Sallynoggin Road, Dun Laoghaire, Co. Dublin Tel: 01-2859177
THE PEOPLES REPUBLIC OF CHINA AND OTHER ASIAN COUNTRIES
Yamaha Corporation, Asia-Pacic Music Marketing Group Nakazawa-cho 10-1, Hamamatsu, Japan 430-8650 Tel: +81-53-460-2317

OTHER EUROPEAN COUNTRIES

Yamaha Music Central Europe GmbH Siemensstrae 22-34, 25462 Rellingen, Germany Tel: +49-4101-3030

GERMANY

Yamaha Music Central Europe GmbH Siemensstrae 22-34, 25462 Rellingen, Germany Tel: 04101-3030

AFRICA

Yamaha Corporation, Asia-Pacic Music Marketing Group Nakazawa-cho 10-1, Hamamatsu, Japan 430-8650 Tel: +81-53-460-2312

OCEANIA

AUSTRALIA
Yamaha Music Australia Pty. Ltd. Level 1, 99 Queensbridge Street, Southbank, Victoria 3006, Australia Tel: 3-9693-5111
SWITZERLAND/LIECHTENSTEIN
Yamaha Music Central Europe GmbH, Branch Switzerland Seefeldstrasse 94, 8008 Zrich, Switzerland Tel: 01-383 3990

AUSTRIA

Yamaha Music Central Europe GmbH, Branch Austria Schleiergasse 20, A-1100 Wien, Austria Tel: 01-60203900

MIDDLE EAST

TURKEY/CYPRUS

NEW ZEALAND

Music Houses of N.Z. Ltd. 146/148 Captain Springs Road, Te Papapa, Auckland, New Zealand Tel: 9-634-0099

THE NETHERLANDS

Yamaha Music Central Europe, Branch Nederland Clarissenhof 5-b, 4133 AB Vianen, The Netherlands Tel: 0347-358 040

OTHER COUNTRIES

Yamaha Music Gulf FZE LB21-128 Jebel Ali Freezone P.O.Box 17328, Dubai, U.A.E. Tel: +971-4-881-5868
COUNTRIES AND TRUST TERRITORIES IN PACIFIC OCEAN

BELGIUM/LUXEMBOURG

Yamaha Music Central Europe GmbH, Branch Belgium Rue de Geneve (Genevastraat) 10, 1140 - Brussels, Belgium Tel: 02-726 6032

HEAD OFFICE Yamaha Corporation, Pro Audio & Digital Musical Instrument Division
Nakazawa-cho 10-1, Hamamatsu, Japan 430-8650 Tel: +81-53-460-3273

[PK] 27

Yamaha PK CLUB (Portable Keyboard Home Page, English only)
http://www.yamahaPKclub.com/

Yamaha Manual Library

http://www2.yamaha.co.jp/manual/english/
M.D.G., Pro Audio & Digital Musical Instrument Division, Yamaha Corporation 2003 Yamaha Corporation WB43360 304PO???.?-01A0 Printed in Malaysia

Thank you, and congratulations on your choice of BOSS DD-20 Digital Delay. Before using this unit, carefully read the sections entitled: USING THE UNIT SAFELY and IMPORTANT NOTES (separate sheet). 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, this manual should be read in its entirety. The manual should be saved and kept on hand as a convenient reference.

Main Features

A full 23-second long delay provides plenty of time for loop play and sound-on-sound. The Memory function allows you to store up to four tones in the DD-20 itself, independent of the panel settings. You also get seamless switching, with memories switched smoothly as the reverberation continues. Features a Delay mode with a total of eleven effects, including new SMOOTH, TWIST and some effects modeled on analog and tape echo effects. The new Time Advance function provides quick, yet sensitive control of delay times. Equipped with custom backlit LCD for clear, easy viewing of delay times, even on dark stages.
Copyright 2003 BOSS CORPORATION All rights reserved. No part of this publication may be reproduced in any form without the written permission of BOSS CORPORATION.

Contents

Main Features.. 1

How to Use Each Mode.21

How to Use SOS (Sound On Sound).21 How to Use TWIST..22 How to Use WARP..22 How to Use TAPE..23 How to Use DUAL..24 How to Use MODULATE.25
Installing Batteries. 3 Making the Connections. 4
Mono Connection. 5 Stereo Connection.. 5 Connecting the Stereo Output and the Effects Processor.. 6 Connecting to SEND/RETURN. 6 With Guitar and Bass Amps. 6 Connecting to an MTR or Mixer. 7
How to Use the Tempo Function.26 Indicating the BPM in the Delay Time Display.27 Settings Made When the Power is Switched ON.28
Global Procedures.28 Changing the Pedal Mode Settings..29 Setting the Output Mode..30 Setting the External Pedal Function.31 Changing How Memory Numbers Are Indicated..33 Returning Settings to Their Factory Defaults...34

Operation. 8

ON/OFF Pedal Operation. 8 Panel Operation.. 9 Storing Settings (Write Operation).. 10 Storing the MANUAL Sound in Memory.. 10 Changing and Storing the MEMORY Sound.. 12 MEMORY/TAP Pedal Operation (Switching Memories). 14 MEMORY/TAP Pedal Operation (Tap Input).. 15
Part Names and Functions 16
Front Panel.. 16 Operating the DELAY TIME Knob.17 MODE List.. 18 Rear Panel... 20
Troubleshooting.35 Sample Settings.37 Setting Memo..40 Specifications..41 Index..42

Installing Batteries

Batteries are supplied with the unit. The life of these batteries may be limited, however, since their primary purpose was to enable testing. Insert the included batteries as shown in figure, being careful to orient the batteries correctly.

fig.02

When turning the unit upside-down, get a bunch of newspapers or magazines, and place them under the four corners or at both ends to prevent damage to the buttons and controls. Also, you should try to orient the unit so no buttons or controls get damaged. When turning the unit upside-down, handle with care to avoid dropping it, or allowing it to fall or tip over. Make sure the + and ends of the batteries are oriented correctly. When the batteries run down, the POWER indicator gets dim. If this happens, replace with new batteries. When replacing the batteries, use six AA type. Avoid using new batteries together with used ones. In addition, avoid mixing different types of batteries. Doing so can result in fluid leakage. Battery life can vary depending on battery type. Continuous usage time under battery power is about 7 hours with alkaline batteries and about 2 hours with carbon batteries. (This may vary according to usage conditions.) 3

Making the Connections

The use of an AC adaptor is recommended as the units power consumption is relatively high. Should you prefer to use batteries, please use the alkaline type. 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. 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. When the unit is running on battery power, the power comes on when you insert the connector plug into the INPUT A (MONO) jack. 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. If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be interrupted (power blackout or power cord disconnection). 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 your guitar amp last. When powering down: Turn off the power to your guitar amp first. Always make sure to have the volume level turned down before switching on power. Even with the volume all the way down, you may still hear some sound when the power is switched on, but this is normal, and does not indicate a malfunction. When operating on battery power only, the units indicator and backlit LCD will become dim when battery power gets too low. Replace the battery as soon as possible. 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. 4

Changing and Storing the MEMORY Sound
Do not switch off the power while a write operation is in progress. 1. Press the MANUAL/TAP pedal or the SELECT button to change to the MEMORY sound. 2. Operate the knobs to change the sound. * To avoid sudden inadvertent changes in sound, the E.LEVEL, TONE, and F. BACK knobs are designed so that the setting does not change unless the knob is first turned as far as the stored setting value. Once the position of the knob matches the setting value stored in memory, the sound starts to change. When a setting changes, the MEMORY indicator flashes automatically.

fig.21

3. Press the WRITE button. The MEMORY indicator and the indicator for the currently selected memory number start to flash, and the DD-20 is put into write standby.

fig.22

Operation 4. Press the SELECT button to select the memory (number) to which you want to store the sound. The indicator for the selected memory number flashes.

fig.22a

5. Press the WRITE button. The write operation is completed when the indicator for the write-destination memory begin to flash more rapidly.

fig.23

Blink rapidly
* If the knob or the MANUAL/TAP pedal position is changed before the WRITE button is pressed, the write operation is cancelled, and the DD-20 is returned to the status in effect in Step 2.
MEMORY/TAP Pedal Operation (Switching Memories)
The Pedal mode (13) changes the function of the pedals. Use the most appropriate setting for your particular application. * The following operations are performed while the MEMORY indicator is lit. * The DD-20 features a seamless switching function. When you switch memories using this function, the reverberation from the memory prior to switching continues to sound, for more natural-sounding transitions. * At the factory settings, Pedal mode is set to 1. When changing the Pedal mode settings, refer to p. Changing the Pedal Mode Settings (p. 29).

Pedal mode: 1

Pressing the MEMORY/TAP pedal cycles you through a series of selections, in this order: MANUAL MEMORY 1 MEMORY 2 MEMORY 3 MEMORY 4 MANUAL. This convenient feature makes it easier to switch memories in which multiple memories are used.

MANUAL

MEMORY 1

MEMORY 2

MEMORY 3

MEMORY 4

Pedal mode: 2
Pressing the MEMORY/TAP pedal switches you between MANUAL and the selected memory (shown by the lit indicator). This is a convenient way to toggle between two sound settings.

fig.10

MEMORY

Pedal mode: 3

Pressing the MEMORY/TAP pedal toggles you between MANUAL and the selected memory (shown by the lit indicator).

fig.11

You can also select among Memories 14 by pressing the MEMORY/TAP pedal and ON/OFF pedal simultaneously. This is convenient when you want to use your foot to rapidly switch memories to call up a desired sound. * You cannot carry out this operation when the MODE knob is turned to SOS.
MEMORY/TAP Pedal Operation (Tap Input)
When the MODE knob is turned to any setting besides SOS, then pressing and holding down the pedal for at least two seconds causes the TAP indicator to light up and switches the MEMORY/TAP pedal function to Tap Input.

fig.12-1

Lit Lit
You can easily set the delay time to match the tempo of the song being played by pressing the pedal in time with the songs tempo (Tap Input). The TEMPO indicator flashes in time with the tempo being input with Tap Input. * You can use the TEMPO button to change the delay time set with Tap Input. Refer to How to Use the Tempo Function (p. 26).

Part Names and Functions

Front Panel

fig.24

F.BACK (feedback) Knob
Adjusts the feedback level (or how much the sound is repeated). * Oscillation may occur with certain input sounds, or when the knob is set at certain positions. * This knob is not functional when SOS is selected as the mode (p. 18).

DELAY TIME Knob

This sets the delay time for the sound. You can turn the knob without pushing it (changing the delay time in 1-msec units) or while pushing it (activating the Time Advance function). Operating the DELAY TIME Knob (p. 17)
E.LEVEL (effect level) Knob
Adjusts the volume of the effect sound.
MEMORY Number Indicators (14)
The indicator for the currently selected MEMORY number (14) lights. The indicator flashes while the DD-20 is in write standby; the indicator flashes more rapidly while the write operation is in progress.

TONE Knob

This adjusts the tone of the effect's sound. The frequency response is flat when the knob is set to the center position; turning it to the right boosts the higher frequencies, and turning it to the left cuts the higher frequencies. * This knob is not functional when SOS is selected as the mode (p. 18).

SOS (Sound On Sound)

REVERSE

fig.25

DUAL Indicator (SHORT, LONG)
Indicates the delay time as well as the delay (SHORT, LONG) when the DD-20 is set to DUAL mode.

Display

When the power is turned on, the backlighting comes on, then goes off again after approximately twenty seconds. This feature is intended to prevent unnecessary battery drainage. If you want to keep the backlighting on, simultaneously press the TAP button and TEMPO button; the light then stays on. * Remember to check on battery power consumption. * Never strike or apply strong pressure to the display.
Output Mode Indicator (A:EFX, B:DIR, +4dB)
Setting the Output Mode (p. 30)

DELAY TIME

This shows the unit of time for the currently selected delay time (or BPM unit). When MODE is set to SOS, it indicates the remaining memory (%) during recording and the loop phrase position during playback and overdubbing.
Control Pedal Function Indicator (ON/OFF, TAP, MEM)
Setting the External Pedal Function (p. 31)

Tempo Type Indicator ( )

How to Use the Tempo Function (p. 26)

ON/OFF Indicator

This lights up when effects are on.

POWER Indicator

This lights up when the power is on.

ON/OFF Pedal

Each press of the pedal switches the effects on or off. With MODE set to WARP or TWIST, pressing on the pedal produces the corresponding effect.

MEMORY Indicator

This is lit when the MEMORY/TAP pedal is used for switching between MANUAL and memories (14).

MEMORY/TAP Pedal

This pedal performs two functions, as a Memory Pedal used for switching between MANUAL and memories (14), and for Tap Input of the delay time. MEMORY/TAP Pedal Operation (p. 14, 15)

TAP Indicator

This is lit when the MEMORY/TAP pedal is used for Tap Input.

Rear Panel

fig.26
INPUT Jacks (A (MONO), B)
This is the input jack for connecting to the output of an electric guitar or other instrument or effects processor. For MONO use, make the connection to the A (MONO) jack. Making the Connections (p. 4)

PHONES Jack

You can connect headphones here to monitor the sound.
* Turn on the power before you connect headphones. When turning off the power, first unplug the headphones, then switch off the power. * Please observe due caution when using headphones while the Output Mode is set to +4 dB, since their volume may get significantly higher.
* The INPUT A (MONO) jack also doubles as the power switch when the unit is running on battery power. The power comes on when a plug is inserted into the INPUT A (MONO) jack, and goes off when it is unplugged. Unplug any connected cords when the unit is not in use.

AC Adaptor Jack

This jack is for connecting an AC adaptor (BOSS PSA-series, sold separately). Using an AC adaptor makes possible long performances with no worry about batteries going dead.

CTL PEDAL Jack

Connect an external control pedal (the optional BOSS FS-5L/FS-5U) to this jack. You can use the external control pedal to turn the effect on and off, to input the delay time with Tap Input, and to switch memories. Setting the External Pedal Function (p. 31)
OUTPUT Jacks (A (MONO), B)
This jack is for connection to a guitar/bass amp, another effects processor, mixer, MTR, or the like. For MONO use, make the connection to the A (MONO) jack. Making the Connections (p. 4)

How to Use Each Mode

How to Use SOS (Sound On Sound)
1. Turn the MODE knob to SOS. 2. Press the ON/OFF pedal to start recording. Play what is to be used as the basic phrase. The remaining memory is indicated as a percentage in the display.

fig.29

3. Press the ON/OFF pedal again to stop recording. Loop playback of the recorded phrase begins at the same time you press the pedal. The loop time is indicated in the display as shown below. The TEMPO indicator also flashes.

fig.30

4. Overdub another phrase. Sounds are overdubbed during loop playback only while the pedal is held down. Continue to hold the pedal down as you play the phrase you want to record. * If the ON/OFF pedal is held down only for a brief period, loop playback stops, and the recorded phrase is erased. By pressing the MEMORY/TAP pedal during loop playback, you can have the delay applied to the guitar sound as loop playback continues. However, you cannot overdub. To stop loop playback, press the MEMORY/TAP button again (we recommend Pedal Mode 2 or 3).

How to Use TWIST

1. Turn the MODE knob to TWIST. 2. Hold down the ON/OFF pedal. The delay sound starts to oscillate, then the oscillation speeds up as its pitch increases.

fig.32

3. Release the pedal. The oscillating sound begins to fade away, and the normal delay sound returns. This effect works very well with distortion sounds, and combining it with distortion results in an even wilder effect (you can adjust the volume of the oscillating sound with the E.LEVEL knob). Using this for the ending of a song is effective. * You can switch the normal effect on and off by pressing the ON/OFF pedal only briefly.

How to Use WARP

1. Turn the MODE knob to WARP. 2. Hold down the ON/OFF pedal. The feedback level and volume increase.
3. Release the pedal. The effect corresponding to the knob positions (E.LEVEL, F.BACK) resumes. You can create fantastic effects by repeating the warped delay sound and then playing a phrase on top of this. * You can switch the normal effect on and off by pressing the ON/OFF pedal only briefly. 22

How to Use TAPE

You can have either one or two playback heads used for the tape echo effect. Setting this to 2 produces a multi-tap delay effect. 1. Turn the MODE knob to TAPE. 2. Hold down the ON/OFF pedal until HEd1 or HEd2 appears in the display. 3. You can change the number of playback heads used by continuing to hold down the ON/OFF pedal as you turn the DELAY TIME knob. HEd1: One head is used HEd2: Two heads are used

fig.35

* This is set at the factory to HEd1. * This setting is preserved even after the power is turned off. If you want to save it as a setting for the Memories (14), then carry out the Write procedure (p. 10).

How to Use DUAL

Although DUAL mode features a short delay and long delay connected in series, you can change the delay time for the short delay. 1. Turn the MODE knob to DUAL. 2. Hold down the ON/OFF pedal until SHORT appears in the display. In this case, the short delays delay time is indicated.

fig.36

3. You can change the delay time by continuing to hold down the ON/OFF pedal as you turn the DELAY TIME knob. * This is set at the factory to SHORT 50msec, LONG 300 msec. * This setting is preserved even after the power is turned off. If you want to save it as a setting for the Memories (14), then carry out the Write procedure (p. 10).

How to Use MODULATE

You can change the MODULATE modulation rate and depth settings. 1. Turn the MODE knob to MODULATE. 2. Hold down the ON/OFF pedal until r appears in the display. The rate value appears next to the r in the display.

fig.37

3. You can change the rate value by continuing to hold down the ON/OFF pedal as you turn the DELAY TIME knob. 4. Hold down the ON/OFF pedal and turn the DELAY TIME knob to have d displayed. The depth value appears next to the d in the display. * Press the DELAY TIME knob once more to have r displayed.
5. You can change the depth by continuing to hold down the ON/OFF pedal as you turn the DELAY TIME knob. * This is set at the factory to r:80, d:70. * This setting is preserved even after the power is turned off. If you want to save it as a setting for the Memories (14), then carry out the Write procedure (p. 10).
How to Use the Tempo Function
The DD-20 includes a Tempo function, which allows you to specify the delay time in terms of note lengths. The display is switched as shown below each time you press the TEMPO button.

fig.39

(Quarter note)

(Dotted 8th note)

(Quarter note triplet)

(8th note)

(8th note triplet)
(Half note triplet) (Dotted quarter note) (Half note) (Dotted half note) (Whole note)
* Notes for certain delay time settings may not be indicated in the display. * The range of the delay time setting differs according to the tempo selected. The delay sound produced is as shown in the figure.

fig.40

Rhythm Used in Pressing the TAP Pedal or the TAP Button
* If you want to set the delay time to match the timing of the tap input, select Quarter Note.
Indicating the BPM in the Delay Time Display
You can switch the DD-20s time delay display to show the tempo (BPM). If, for example, you already know the BPM of the song you are performing, you can get a perfectly synchronized delay effect by setting the delay time with the indicated tempo (BPM). * Specifying the note lengths with the TEMPO button also makes it easy to specify the times for dotted notes, triplets, and other kinds of notes. 1. Hold down the TAP button until the delay time indicated in the display changes to show the tempo (BPM).

fig.41

Use this same procedure to return to the time (msec) display. When the delay time is saved after switching the display, the method used to display it is also saved.
Settings Made When the Power is Switched ON
You can make the following settings with the operations performed while turning on the power.

fig.42

Returns settings to their factory defaults. Returning Settings to Their Factory Defaults (p. 34)
This sets the pedal mode. Changing the Pedal Mode Settings (p. 29)
WRITE Button + SELECT Button
Set how the Memory numbers are to be indicated.
Setting the External Pedal Function (p. 33)
This sets the output mode. Setting the Output Mode (p. 30)
This sets the External Pedal Function. Setting the External Pedal Function (p. 31)

Global Procedures

Switch off the power.
When running on battery power: Disconnect the connection plug from the INPUT A (MONO) jack. When running on power from an AC adaptor: Disconnect the plug from the INPUT A (MONO) jack and the AC ADAPTOR jack.

Switch on the power.

When running on battery power: Insert the connection plug into the INPUT A (MONO) jack. When running on power from an AC adaptor: Insert the AC ADAPTOR plug into the AC ADAPTOR jack.
Changing the Pedal Mode Settings
Use the following to change the Pedal mode settings. * Pedal mode settings are saved even after the power is turned off. 1. Switch off the power. 2. While holding down the SELECT button, switch on the power. The MEMORY 13 indicator corresponding to the current Pedal mode settings flashes. The Pedal mode is indicated in the display. 3. Set the pedal mode (1-3) pressing the SELECT button.

1. Switch off the power. 2. While holding down the MEMORY/TAP pedal, switch on the power. The setting is indicated in the display, and the MEMORY 13 indicator corresponding to the current setting flashes. 3. Set the external pedal function pressing the SELECT button. Each time you press the SELECT button, it switches through the ON/OFF, and TAP, MEM.

fig.46

Settings Made When the Power is Switched ON 4. Press the WRITE button. After the MEMORY Number indicator begins flashing rapidly, the setting is stored in memory and the unit returns to its ordinary state. * To cancel the setting change and return the unit to its ordinary state, then before you press the WRITE button, operate the MEMORY/TAP or ON/OFF pedal. Display ctl1, ON/OFF ctl2, TAP ctl3, MEM Mode CTL1 CTL2 CTL3 Function Switches effects on and off Tap input Switches Memories Foot Switch FS-5L (Latch Type) FS-5U (Momentary Type) FS-5U (Momentary Type)
* This is set at the factory to CTL 2. * When you connect an external pedal after making this setting, the function you have set appears in the display, indicating that the function can be used. When the CTL1 mode is selected and you are using the DD-20 in conjunction with an OD-20, you can turn the DD-20 on and off with the OD-20s AMP CTRL button by connecting the DD-20s CTL PEDAL jack and the OD-20s AMP CTRL jack. When using an external pedal to turn the effect on and off with the DD-20 set to CTL1 mode, if you try to switch the effect on or off with the DD-20s ON/OFF pedal, the external pedals actual function will differ from the function that is indicated. The following parameters cannot be controlled by the external pedal when the external pedal is being used to turn the effect on and off with the DD-20 set to CTL1 mode. Recording, playback, and overdubbing in Sound On Sound (p. 21) TWIST (p. 22) WARP (p. 22) TAPE playback head setting (p. 23) DUAL short delay time setting (p. 24) MODULATE modulation rate setting (p. 25)
Changing How Memory Numbers Are Indicated
Not only can you confirm the currently selected memory merely by checking the lit MEMORY number indicators, you can also change the pattern in which the indicators light up. Select the pattern that provides the easiest way to check the memory in any particular environment. When using the DD-20 in dimly lit surroundings, you can confirm memory numbers more easily by using the Lighting Pattern 2 setting. Lighting Pattern 1 (Normal): Only the indicator for the selected memory lights up (or flashes).

fig.47

MANUAL MANUAL MANUAL MANUAL MANUAL
Lighting Pattern 2: The number of indicators lighting up (or flashing) corresponds to the selected memory number.

fig.48

1. Switch off the power.
2. While holding down the WRITE button and the SELECT button, switch on the power.
3. Press the SELECT button to set the MEMORY indicator lighting pattern.

fig.49

Lighting Pattern 1

Lighting Pattern 2

4. Press the WRITE button. After the MEMORY Number indicator begins flashing rapidly, the setting is stored in memory and the unit returns to its ordinary state. * To cancel the setting change and the unit returns to its ordinary state, then before you press the WRITE button, operate the MANUAL/TAP or ON/OFF pedal. 33
Returning Settings to Their Factory Defaults
You can restore the following settings to their original factory values. Memory 1 (p. 12) Memory Settings Memory 2 (p. 12) Memory 3 (p. 12) Memory 4 (p. 12) MANUAL Delay Time (p. 9) (when the power is switched on) DUAL Short Delay Time (p. 24) MODULATE Rate/Depth (p. 25) TAPE (p. 23) Pedal Mode (p. 29) Output Mode (p. 30) External Pedal Function (p. 31) MEMORY Number Indication (p. 33) SMOOTH TAPE DUAL MODULATE MANUAL: 300 msec S: 50 r: 80, d: 70 HEd1 Mode 1 Mode 1 TAP Lighting Pattern 1
Carrying out the following procedure completely clears the content currently stored in the memories (1-4). 1. Switch off the power. 2. While holding down the WRITE button, switch on the power. The MEMORY Number indicators (1-4) flash.

fig.50

3. Press the WRITE button. After the MEMORY Number indicators (1-4) begin flashing rapidly, the setting is stored in memory and the unit returns to its ordinary state. * To cancel the setting change and the unit returns to its ordinary state, then before you press the WRITE button, operate the MEMORY/TAP or ON/OFF pedal.

Troubleshooting

The power doesnt come on.
Is the guitar connected correctly to the INPUT A (MONO) jack? Check the connections again (p. 4p. 7). * When running off batteries, the unit wont switch on unless theres something plugged into the INPUT jack. This helps conserve the batteries. Is the plug connected to the INPUT B jack? When using battery power, connect the plug to the INPUT A (MONO) jack. Have the batteries run down? Replace with fresh batteries (p. 3). Is the specified AC adaptor (PSA-series sold separately) connected correctly? Check the connections again (p. 4p. 7).

Sound is distorted.

Are the TONE knob positioned correctly? Sounds may become distorted with the knob at certain settings. Turn down this knob, or turn down the E.LEVEL knob to appropriate level. If in spite of these measures the sound is still distorted, lower the output level of the device connected to the INPUT jacks, or set the Output Mode to +4 dB (p. 30).
Pressing the MEMORY/TAP pedal does not call up the intended memory.
Is the proper Pedal mode set for your current application? The MEMORY/TAP pedal (or the MEMORY/ TAP pedal when pressed simultaneously with ON/OFF pedal) functions differently according to the Pedal mode settings. Use the most appropriate setting for your particular application (p. 29). Is the MEMORY/TAP pedal set to the TAP function? If the MEMORY/TAP pedal is set to TAP (MEMORY/TAP pedal has been pressed for two seconds), the pedal functions as a Tap Input pedal. To switch memories, either change the pedal to the MEMORY switching function by holding down the MEMORY/TAP pedal for two seconds, or use an external pedal (p. 14p. 15).

There is no sound.

Is the other equipment connected correctly? Check the connections again (p. 4p. 7). Is the volume turned down on the connected guitar/bass amp, effects processor, or other device? Check the settings on the connected equipment (p. 4p. 7). Is the Output Mode set correctly? Set the Output Mode to match the connected equipment (p. 30). Is the Output Mode set to A: DIR / B: EFX? No sound is output from the OUTPUT B jack when the ON/ OFF pedal is set to OFF. Set the Output Mode to Stereo output (out 1 or out 3) (p. 30).
The volume level of the instrument connected to INPUT jack is too low.
Could you be using a connection cable that contains a resistor? Use a connection cable that does not contain a resistor.
Is the effect level (E. LEVEL knob) set to minimum?
Operate the E.LEVEL knob to adjust the effect level (p. 16).
Pressing the ON/OFF pedal does not switch on or off as intended.
Is the Pedal mode set to SOS, WARP or TWIST? The pedal functions differently according to the Pedal mode settings. For more details, refer to the description of each mode. SOS (p. 21), WARP (p. 22), TWIST (p. 22)
Cannot be saved to the memories

The delay time cannot be saved in SOS or MANUAL. SOS cannot be saved to the memories. Delay time settings in MANUAL are saved by pressing the DELAY TIME knob or switching memories before the power is turned off.
Information not displayed
External pedal not indicated. The external pedal is not indicated unless it is connected (p. 31). Output mode not indicated. A: DIR/B: EFX is not indicated when input is in stereo. For more detailed information, refer to Setting the Output Mode (p. 30). The set delay time is different than the time displayed. Manual delay time settings change unless the Write procedure is carried out. The settings are saved when you press the DELAY TIME knob or switch memories. The delay time does not reach the maximum of 23 seconds The range of the delay time setting may vary according to the mode and the tempo setting. For more detailed information, refer to MODE List (p. 18) and How to Use the Tempo Function (p. 26).

Sample Settings

SMOOTH (Memory 1)
Roland SPACE ECHO RE-201 (Memory 2)

MODE: TAPE HEd2

DUAL (Memory 3)

MODE: DUAL/SHORT 50 msec

MODULATE (Memory 4)
MODE: MODULATE/RATE 80, DEPTH 70
Holding down the ON/OFF pedal produces the twist effect.

ROOM AMBIENCE

SLAP BACK ECHO

MODULATE DOUBLING

MODE: MODULATE/RATE 25, DEPTH 95

Setting Memo (

Specifications
DD-20: DIGITAL DELAY Nominal Input Level -20 dBu (GUITAR/BASS) +4 dBu (AMPLIFIER SEND/RETURN) Input Impedance 1 M Nominal Output Level -20 dBu (GUITAR/BASS) +4 dBu (AMPLIFIER SEND/RETURN) Output Impedance 1 k (OUTPUT A (MONO), B) 33 (PHONES) Recommended Load Impedance 10 k Residual Noise Level -93 dBu or less (IHF-A typ.) * E. LEVEL/F. BACK/TONE knobs are set to the center position Display Custom LCD (with backlit) Controls ON/OFF Pedal MEMORY/TAP Pedal DELAY TIME Knob E.LEVEL Knob F. BACK Knob TONE Knob MODE Knob TAP Button TEMPO Button MEMORY WRITE Button MEMORY SELECT Button Indicators POWER Indicator (serves also as battery check indicator) ON/OFF Indicator MEMORY Indicator TAP Indicator MANUAL Indicator MEMORY Number Indicator 14 TEMPO Indicator Connectors INPUT A (MONO) Jack (1/4 inch phone type) INPUT B Jack (1/4 inch phone type) PHONES Jack (stereo 1/4 inch phone type) CTL PEDAL Jack (1/4 inch phone type) OUTPUT A (MONO) Jack (1/4 inch phone type) OUTPUT B Jack (1/4 inch phone type) AC Adaptor Jack Power Supply Dry battery (R6/LR6 (AA) type) x 6: DC 9V AC Adaptor (DC 9V) Current Draw 200 mA (9 V max.) * Expected battery life under continuous use: Carbon: 2 hours Alkaline: 7 hours These gures will vary depending on the actual conditions of use. Dimensions 173 (W) x 158 (D) x 57 (H) mm 6-13/16 (W) x 6-1/4 (D) x 2-1/4 (H) inches Weight 1.2 kg / 2 lbs 11 oz (including batteries) Accessories Owners Manual Leaet (USING THE UNIT SAFELY, IMPORTANT NOTES, and Information) Dry battery (LR6 (AA) type) x 6 * We recommend that alkaline batteries be used when replacing the batteries. Options AC Adaptor (PSA-series) * 0 dBu = 0.775 Vrms * In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice.

ANALOG

... 18
ON/OFF Pedal.. 8 Output Mode. 30 Overdub. 18, 21

Batteries... 3 BPM.. 27

PAN.. Pedal Mode.. Pedal mode.. Polarity switch..
Connection.. 4 CTL PEDAL.. 31
Delay time.. DELAY TIME knob.. Depth.. Direct Sound.. DUAL.. 18,

Rate.. REVERSE...

Seamless switching.. 1 Short delay.. 24 SMOOTH... 18 SOS.. 18, 21 Sound On Sound.. 18, 21 STANDARD.. 18
Effect Sound.. External Pedal..

Factory Defaults

Tap Input... TAPE... 18, Tempo Function.. Time Advance Function. TWIST.. 18,

Long delay

MANUAL.. 910 MEMORY.. 10, 12, 33 MEMORY/TAP Pedal. 14 MODE.. 18, 21 MODULATE. 18, 25

WARP.. 18, Write..

For EU Countries This product complies with the requirements of European Directive 89/336/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.
Cet appareil numrique de la classe B respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada.