Boss ME-20 User Manual

Thank you, and congratulations on your choice of BOSS ME-20 Guitar Multiple Effects.
Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and
“IMPORTANT NOTES” .
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
● Simple Operation—Works Like a Compact Pedal Effects
All you need to do to get the sound you want is to select an effect, then tweak it using the
knobs
–basically, this is the same simple, intuitive operation offered by compact pedal effects.
● OD/DS Solo Function
Give distortion sounds an intense boost and clarity simply and easily with the press of a single
button. You can also switch the effect with the pedal, a convenient feature for live performances.
● EZ EDIT for Quick Sound Creation
EZ EDIT is a feature that allows you to creating sounds quickly and easily.
You can adjust a combination of effect parameters with just a single knob.
● Memory Function
Up to thirty of the sounds you create can be stored in the ME-20’s User memory.
In “Memory mode,” you can use the pedals to instantly select a stored sound.
● AUX IN Jack
Thanks to this feature, it’s simple to play along with CD and MP3 players and other equipment.
● Battery Powered Operation
The ME-20 runs on battery power (six AA dry cells), allowing you to use it anywhere you play.
You can also use the optional AC adaptor, giving you two ways to power the ME-20, so you can
play for extended periods during live performances.
Copyright © 2007 BOSS CORPORATION
All rights reserved. No part of this publication may be
reproduced in any form without the written permission
of BOSS CORPORATION.
ME-20_e.book 1 ページ ２００９年１月７日 水曜日 午後３時１８分

Boss ME-20 Specifications

General

Type	Multi-effects pedal
AD Conversion	24-bit
DA Conversion	24-bit
Sampling Frequency	44.1 kHz
Nominal Input Level	-10 dBu
Input Impedance	1 M ohm
Nominal Output Level	-10 dBu
Manufacturer	Boss
Presets	30 user + 30 preset
Output Impedance	2 k ohms
Display	7 segments, 2 characters (LED)
Power Supply	DC 9V: Dry battery (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series)
Inputs	Input jack, AUX IN jack
Outputs	L/MONO, R

Summary

USING THE UNIT SAFELY

WARNING and CAUTION Notices

Explains the meaning of WARNING and CAUTION notices.

About the Symbols

Explains the meaning of various safety symbols used in the manual.

General Safety Precautions

Essential safety guidelines for operation, placement, and power.

Flammable Materials and Liquids

Warns against allowing objects or liquids to penetrate the unit.

Handling Damaged Units

Instructions for immediate action if the AC adaptor or cord is damaged.

Battery Handling Precautions

Covers safe handling, charging, and disposal of batteries.

IMPORTANT NOTES

Power Supply: Use of Batteries

Names of Things and What They Do

Front Panel Overview

Identifies and describes the components on the front panel.

Parameter Knobs Functionality

Effect Select Indicators and Buttons

Expression Pedal Functionality

Rear Panel Connections

Identifies and explains the rear panel jacks and connectors.

Installing Batteries

Battery Installation Procedure

Step-by-step guide for inserting batteries correctly.

Connections

System Connection Diagram

Illustrates how to connect the ME-20 to guitars, amps, and other devices.

Connection Precautions

Turning On the Power Sequence

Specifies the correct order for powering up connected devices.

Turning Off the Power Sequence

Specifies the correct order for powering down connected devices.

Tuning the Guitar (Bypass/Tuner)

Tuner Mode Activation

How to enter and exit Tuner mode using pedals.

Reference Pitch Adjustment

Playing Notes for Tuning

General Tuning Procedure

Steps for rough and accurate tuning of guitar strings.

Tuning Guides Explained

Introduction to Effects and Parameters

OD/DS (Overdrive/Distortion) Types

OD/DS Parameter Controls

MOD (Modulation) Types

MOD Parameter Controls

DELAY Types

DELAY Parameter Controls

EQ (Equalizer) Functionality

EQ Parameter Controls

WAH Effect Operation

NS (Noise Suppressor) and THRESHOLD

MASTER LEVEL Control

Creating Sounds Easily (EZ EDIT)

EZ EDIT Operation Guide

Step-by-step instructions for using the EZ EDIT feature.

EZ EDIT Setting List

Saving and Calling Up Tones (Memory Mode)

Manual vs. Memory Mode

Explains the differences between Manual and Memory modes.

Switching Between Modes

How to switch between Manual and Memory modes using pedals.

Patches and Banks Explained

Saving Tones (Write Procedure)

Step-by-step guide to save created sounds to memory.

Calling Up Saved Sounds (Patch Change)

How to switch between saved patches using pedals.

Switching Numbers within Banks

Switching Banks

Changing Patch Settings (Patch Edit Mode)

How to enter Patch Edit mode to modify existing patches.

Other Functions

Using Footswitch Pedals

Connecting a Footswitch Pedal (FS-5U)

Connecting Two Footswitches (FS-5Us/FS-6)

Returning to Factory Settings (Factory Reset)

Procedure to restore the ME-20 to its original factory settings.

Adjusting the Expression Pedal

Guide for recalibrating the expression pedal for optimal performance.

Factory Settings

OD/DS and MOD Factory Settings

Detailed table of factory settings for OD/DS and MOD effects.

DELAY, EQ, WAH, NS, MASTER LEVEL Factory Settings

Detailed table of factory settings for remaining effects.

Troubleshooting

Display Errors ('bt')

Explains the meaning of "bt" in the display and the solution.

Power and Sound Issues

Troubleshooting steps for power not turning on and low/no sound.

Patch Switching and Expression Pedal Problems

Solutions for patches not switching and expression pedal issues.