Yamaha EMX 640 User Manual

P O W E R E D M I XE R
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Fr ont and r ea r pane l ............................................ 2
C ont r o l pane l .......................................................... 2
Input/output pane l .................................................. 6
R ea r pane l .............................................................. 7
C onne c t i on s ......................................................... 8
B a sic O pe r at i on ................................................... 9
C onne c t i ng micr ophone s and i n s t r u m ent s ............ 9
Usi ng the d i g i ta l effe c t ............................................ 9
E x a m p l e s etup s ................................................. 10
A s a c onfe r en c e PA sys te m / i n s ta ll ed s ound sys te m 10
A s a band PA ........................................................ 11
S pe ci f ic at i on s ..................................................... 13
G ene r a l s pe ci f ic at i on s .......................................... 13
Input s pe ci f ic at i on s ............................................... 14
O utput s pe ci f ic at i on s ............................................ 14
Dim en si on s ........................................................... 15
B l o ck and Le v e l d i ag r a m ...................................... 15
5. A l way s p ower off b efore ma kin g co nn ect i o n s
6. H a ndl e ca bl e s caref ull y
7. C l ea n w i t h a s oft d ry c l ot h
8. A l way s u s e t h e correct p ower s uppl y
9. Do n ot to u c h t h e h eat s ink w h e n t h e E MX640 i s in u s e.
I t ca n get very h ot.
1. Avo id exce ss i ve h eat, hu m idi ty, du s t a nd v ib rat i o n
2. Ve n t il at i o n
3. Avo id ph y s i ca l s h oc k s
4. Do n ot o p e n t h e ca s e or attem p t re p a i r s or mo di f i cat i o n s
yo u r s e l f

Yamaha EMX 640 Specifications

General

Input Channels	6
Frequency Response	20Hz - 20kHz
Type	Powered Mixer
Number of Channels	6
EQ	3-band EQ
Effects	Reverb

Summary

Introduction to the EMX640

EMX640 Features Overview

Safety and Handling Precautions

Environmental and Physical Safety Guidelines

Protect unit from heat, humidity, dust, vibration, and physical shocks for longevity.

Servicing, Maintenance, and Power Guidelines

Do not service yourself; power off before connections; handle cables carefully; clean with dry cloth; use correct power; avoid hot heatsink.

Control Panel Overview

Channel Section Controls

Adjusts equalization, volume, effect, and monitor outputs for each input channel.

Control Panel - Digital and External Effect Controls

Digital Effect Selection and External Send Control

Manages built-in digital effect selection/activation and external effect send level.

Control Panel - Monitor and Main Section Controls

Monitor Section Controls

Adjusts tone and volume of the MONITOR bus and the mix level of the built-in effect.

Main Section Controls

Adjusts tone, volume, effect mix, and external input mix for the MAIN bus.

Control Panel - Power Amplifier and Phantom Power Controls

Power Amplifier Section Controls

Selects output signals for the built-in power amplifier and the BRIDGE mode.

Power Indicator and Phantom Power Switch

Indicates power status and controls phantom power for microphone inputs.

Input and Output Panel Connections

Channel Input Jacks (1-4)

Input jacks for channels 1-4, supporting Hi-Z and Lo-Z connections with PAD switch.

Channel Input Jacks (5-6)

Input jacks for channels 5-6, supporting MIC and stereo LINE level devices.

Effect Send and Foot Switch Jacks

Jacks for external effect send and foot switch control of built-in effect.

External Input Jacks (AUX IN/TAPE IN)

Jacks for adding external device signals (mono/stereo) to the MAIN output.

External Output Jacks

External Output Jacks (REC OUT/MONITOR/MAIN)

Output jacks for sending line level signals to external devices.

Rear Panel Layout

Speaker Output Jacks

Jacks for connecting speakers to the power amplifier outputs (stereo or bridge).

Power Switch Operation

The main power switch to turn the EMX640 on or off.

System Connections and Setup

Speaker Connection Configurations

Details on connecting speakers to power amp outputs (stereo or bridge), specifying impedance.

Example System Connection Diagrams

Illustrates typical connection scenarios for microphones, instruments, and playback devices.

Basic Operation Guide

Connecting Microphones and Instruments

Step-by-step guide for connecting mics and instruments and setting initial levels.

Using the Built-in Digital Effect

Guide on activating, selecting, and applying the built-in digital effect to channels.

Example Setup Scenarios

Conference PA or Installed Sound System Example

Example setup for using the EMX640 in a conference or installed sound system context.

Band PA System Setup Example

Example setup for using the EMX640 as a PA system for a band, with independent monitor mixes.

Creating an Independent Monitor Mix

Instructions for creating an independent monitor mix separate from the main mix.

Integrating an External Effect Processor

Guide on integrating and controlling an external effect processor with the EMX640.

Technical Specifications

General Specifications Overview

Lists general technical specifications such as output power, frequency response, and distortion.

Input Connector Specifications

Details input impedance, sensitivity, and levels for various input connectors.

Output Connector Specifications

Details output impedance, nominal level, and connector types for various output jacks.

Unit Dimensions

Provides the physical dimensions of the EMX640 unit in millimeters.

Block and Level Diagram

Visual representation of the EMX640's internal signal flow and level characteristics.

Regulatory and Safety Information

FCC Compliance and Warnings

FCC regulations, modifications warning, and interference guidelines for US users.

Mains Lead Wiring and Earthing Safety

Important safety warning regarding earthing the apparatus according to mains lead color coding.