Boss ME-90B User Manual

01
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Panel descriptions ........................................ 2
Top panel ................................................... 2
Rear panel (connecting your equipment) ....................... 3
Installing the batteries ..................................... 3
Outputting sound ........................................ 4
Turning the power on/o ..................................... 4
Setting the connected device type ............................. 4
Selecting a bass amp type (output select) ...................... 4
Adjusting the volume (output level) ........................... 4
Tuning your bass (tuner) ...................................... 4
Eect signal chain ............................................ 5
Signal ow .................................................. 5
Saving/recalling sounds (memory mode) ................... 6
How the memories are structured ............................. 6
Switching between manual/memory mode ..................... 6
Setting what happens when switching from memory mode to
manual mode ................................................ 6
Selecting a sound (memory) .................................. 6
Checking the knob positions ................................ 6
Conguring what happens when switching banks ............. 7
Saving a sound (memory write) ............................... 7
Changing the settings for sounds (memory edit mode) .......... 7
Useful functions .......................................... 8
Adding eects that follow your tempo (tap tempo) .............. 8
Setting the modulation speed or delay time with the pedal ...... 8
Performing with phrase loops ................................. 9
Conguring the [CTL] (control) pedal functions ................. 10
Setting the pedal function .................................. 10
Conguring the pedal operations ............................ 10
Connecting to and using an external eect unit via
the SEND/RETURN jacks ...................................... 11
Calibrating the expression pedal .............................. 11
Connecting to your computer via USB ...................... 12
Installing the USB driver ...................................... 12
Transmitting/receiving audio signals between your computer
and the ME-90B (USB audio) .................................. 12
Transmitting/receiving MIDI data between a computer and the
ME-90B (USB MIDI) ........................................... 13
Loading IR data to use this unit as a speaker simulator ........... 13
Wireless connection with a mobile device .................. 14
Attaching the BT-DUAL ....................................... 14
Listening to sound via wireless connection with a mobile device .. 14
Registering a mobile device (pairing) ......................... 14
Connecting an already-paired mobile device .................. 15
Disabling Bluetooth functionality ............................. 15
Controlling the ME-90B from the dedicated app on your mobile
device ...................................................... 15
Connecting to the dedicated app ............................ 15
Operating the ME-90B wirelessly with an EV-1-WL/FS-1-WL ..... 15
Conguring the device overall (system settings) ............ 16
Parameter list ................................................ 16
Restoring the factory settings (factory reset) ............... 17
Troubleshooting ......................................... 18
Main specications ....................................... 19
Contents
Reference Manual

Boss ME-90B Specifications

General

Sampling Frequency	44.1 kHz
Bypass	Buffered bypass
Type	Multi-effects pedal
AD/DA Conversion	24 bits
Nominal Input Level	-10 dBu
Input Impedance	1 MΩ
Nominal Output Level	-10 dBu
Output Impedance	1 kΩ
Recommended Load Impedance	10 kΩ or higher
Controls	Knobs, footswitches
Connectors	1/4" jacks, XLR, USB
Power Supply	AC adapter (sold separately)
Accessories	Owner's Manual
Options (sold separately)	Expression pedal
USB	Audio, MIDI

Summary

Panel descriptions

Top panel controls and display

Explains the ME-90B's top panel controls, display, and indicators.

Pedals and switches

Details the function of the expression pedal, memory/manual pedal, and footswitches.

Modes and output level

Describes memory/manual modes and how to adjust output level.

Rear panel connections

Audio and instrument connections

Details on connecting guitars, amps, mixers, and external effects.

Computer and wireless interfaces

Information on USB, Bluetooth adaptor jacks, power, and ground terminal.

Battery installation procedure

Instructions for installing batteries into the unit.

Outputting sound

Powering on/off and device settings

Steps for powering the unit and configuring device type settings.

Tuning and volume adjustment

How to adjust output volume and use the built-in bass guitar tuner.

Effect signal chain and flow

Signal chain overview and effects

Illustrates the general signal path and provides descriptions of individual effects.

Signal flow diagram

A visual representation of the signal flow through the unit.

Saving and recalling sounds

Memory structure and selection

Describes how sounds (memories) are organized and how to recall them.

Mode switching and knob checking

How to toggle modes and check knob positions relative to parameter values.

Memory operations

Bank switching and memory writing

Configuring bank switching and saving sounds to memory.

Memory editing and copying

How to edit memory settings and copy existing memories.

Useful functions

Tempo-synced effects (Tap Tempo)

How to set delay and modulation timing using the tap tempo function.

Pedal-controlled timing

Using the pedal to set modulation speed or delay time dynamically.

Phrase loop functionality

Phrase loop recording, playback, and overdubbing

How to record, overdub, and play back phrase loops up to 38 seconds.

CTL pedal configuration

CTL pedal function assignment

How to assign functions to the CTL pedal for effects on/off or parameter changes.

CTL pedal operation modes

Setting the CTL pedal for toggle or momentary operation.

External effects and pedal calibration

Using SEND/RETURN jacks

Connecting external effects using the SEND/RETURN jacks.

Expression pedal calibration

How to calibrate the expression pedal for optimal performance.

Computer connectivity via USB

USB driver installation and audio signals

Installing the USB driver and routing audio signals via USB.

Computer connectivity and MIDI

USB MIDI data and dedicated app

Controlling via MIDI and using the BOSS TONE STUDIO app.

IR data for speaker simulation

How to load Impulse Response data for speaker simulation.

Wireless mobile device connection

Attaching BT-DUAL and wireless audio

Connecting the BT-DUAL and playing music wirelessly.

Mobile device pairing process

Process of pairing a mobile device with the ME-90B for wireless connection.

Mobile device integration

Connecting paired devices and disabling Bluetooth

How to reconnect paired devices and disable Bluetooth functionality.

App control and wireless pedal operation

Using the app for control and connecting wireless pedals/footswitches.

System settings configuration

System settings adjustment

How to configure various system-wide settings for the unit.

Parameter list and LED colors

Detailed list of system parameters and LED illumination color options.

Factory reset procedure

Restoring factory settings

Step-by-step guide to reset the unit to its factory default settings.

Troubleshooting guide

Common problems and solutions

Common problems and their solutions for sound and operation issues.

Technical specifications

ME-90B main specifications

Technical specifications of the ME-90B including sampling frequency, bits, effects, etc.