Boss Giga Delay DD-20 User Manual

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.

Boss Giga Delay DD-20 Specifications

General

Effect Type	Digital Delay
Number of Delay Modes	11
Maximum Delay Time	23 seconds
Bypass	Buffered Bypass
Sampling Frequency	44.1 kHz
Nominal Input Level	-20 dBu
Input Impedance	1 MΩ
Nominal Output Level	-20 dBu
Output Impedance	1 kΩ
Tap Tempo	Yes
Output	Mono/Stereo
Power Supply	9V DC
Dimensions	173 x 158 x 57 mm
Weight	1.2 kg
Delay Time Range	1 ms to 23 seconds
Connectors	AC Adaptor
Delay Modes	Standard, Tape, Analog, Reverse
Presets	4

Summary

Main Features

Installing Batteries

Making the Connections

Mono Connection

Diagram for connecting a mono signal to an amplifier.

Stereo Connection

Diagram for connecting a stereo signal to amplifiers.

Stereo Output and Effects Processor Connection

Connecting the unit's stereo outputs to effects or amps.

Connecting to Amp SEND/RETURN

Integrating the unit into an amplifier's effects loop.

Connecting to MTR or Mixer

How to connect the unit to recording devices or mixers.

Operation

ON/OFF Pedal Operation

How to turn the effect on and off using the pedal.

Panel Operation

Detailed explanation of front panel controls and their functions.

Storing Settings (Write Operation)

Step-by-step guide to saving sounds to memory.

Changing and Storing Memory Sounds

How to modify and save sounds in memory slots.

Memory/Tap Pedal Operation (Switching Memories)

Using the pedal to switch between memory presets.

Memory/Tap Pedal Operation (Tap Input)

Using the pedal to input delay time via tapping.

Part Names and Functions

Front Panel Controls

Identification and function of all front panel knobs and buttons.

Operating the Delay Time Knob

How to adjust delay time, including Time Advance function.

MODE List

Descriptions of all available delay modes and their uses.

Rear Panel Connections

Explanation of all rear panel input and output jacks.

How to Use Each Mode

How to Use SOS (Sound On Sound)

Guide to using the Sound On Sound recording feature.

How to Use TWIST

Instructions for the TWIST delay effect.

How to Use WARP

Instructions for the WARP delay effect.

How to Use TAPE

How to use the tape echo emulation mode.

How to Use DUAL

How to use the dual delay mode.

How to Use MODULATE

How to use the modulation delay effect.

How to Use the Tempo Function

Indicating BPM in Delay Time Display

How to switch the display to show tempo (BPM).

Settings Made When Power is Switched ON

Changing Pedal Mode Settings

How to configure the behavior of the pedals.

Setting the Output Mode

How to configure output levels and signal routing.

Setting the External Pedal Function

How to assign functions to an external footswitch.

Changing Memory Number Indication

How to alter the way memory numbers are displayed.

Returning Settings to Factory Defaults

How to reset the unit to its original factory settings.

Troubleshooting

Power and Sound Issues

Resolving problems with power not coming on or no sound.

Audio Quality Problems

Addressing distorted sound and low input volume issues.

Pedal and Memory Functionality

Troubleshooting pedal operation and memory access.

Operation and Display Issues

Resolving problems with pedal switching and information display.

Sample Settings

SMOOTH (Memory 1)

Example settings for the SMOOTH delay effect.

Roland SPACE ECHO RE-201 (Memory 2)

Example settings emulating the RE-201 Tape Echo.

DUAL (Memory 3)

Example settings for the DUAL delay effect.

MODULATE (Memory 4)

Example settings for the MODULATE delay effect.

TWIST Effect

Example settings for the TWIST effect.

REVERSE Effect

Example settings for the REVERSE effect.

ROOM AMBIENCE

Example settings for a room ambience effect.

SLAP BACK ECHO

Example settings for a slap back echo effect.

MODULATE DOUBLING

Example settings for modulate doubling effect.

Specifications