Owner`s manual

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POWERED MIXER

Owner’s Manual

Contents

Front and rear panel ............................................ 2

Control panel .......................................................... 2

Input/output panel .................................................. 6

Rear panel .............................................................. 7

Connections ......................................................... 8

Basic Operation ................................................... 9

Connecting microphones and instruments ............ 9

Using the digital effect ............................................ 9

Example setups ................................................. 10

As a conference PA system/installed sound system 10

As a band PA ........................................................ 11

Specifications..................................................... 13

General specifications .......................................... 13

Input specifications............................................... 14

Output specifications ............................................ 14

Dimensions ........................................................... 15

Block and Level diagram ...................................... 15

maintenance to qualified Yamaha service personnel. Opening

the case and/or tampering with the internal circuitry voids

the warranty.

5. Always power off before making connections

Always turn the power OFF before connecting or

disconnecting cables. This is important to prevent damage to

the unit itself as well as other connected equipment.

6. Handle cables carefully

Always plug and unplug cables — including the AC power

cord — by gripping the connector, not the cord.

7. Clean with a soft dry cloth

Never use solvents such as benzine or thinner to clean the

unit. Wipe clean with a soft, dry cloth.

8. Always use the correct power supply

Make sure that the power supply voltage specified on the rear

panel matches your local AC mains supply. Also make sure

that the AC mains supply can deliver more than enough

current to handle all equipment used in your system.

9. Do not touch the heatsink when the EMX640 is in use.

It can get very hot.

Precautions

1. Avoid excessive heat, humidity, dust and vibration

Keep the unit away from locations where it is likely to be

exposed to high temperatures or humidity — such as near

radiators, stoves, etc. Also avoid locations which are subject

to excessive dust accumulation or vibration which could

cause mechanical damage.

2. Ventilation

Allow a distance of 30 cm between the unit and the wall so

that heat generated from the unit will be released effectively.

Also, allow enough space between the unit and other devices.

If you mount the unit in an audio rack, keep a space of 40

cm on the top panel, and a space of 15 cm to the side panel.

Remove the rear panel of the rack or open a vent hole. If heat

release is inadequate, the unit will retain heat inside the unit,

which may cause a fire.

3. Avoid physical shocks

Strong physical shocks to the unit can cause damage. Handle

it with care.

4. Do not open the case or attempt repairs or modifications

yourself

This product contains no user-serviceable parts. Refer all

Features

• Six input channels compatible with mic/line signals are

provided. The EMX640 has ample power, with a maximum

output of 200 W+200 W (400 W with bridge connection),

and is suitable for a wide range of applications from installed

systems to small-scale PA systems.

• A two-channel power amp is built-in. The input signals for

the two channels can be selected as MAIN+MAIN,

MAIN+MONITOR, or MAIN (bridge connection).

• Independent 7-band graphic EQ is provided for both the

MONITOR section and the MAIN section. This allows the

volume and frequency response to be adjusted separately for

the main speakers and monitor speakers.

• Two limiter circuits are built-in to prevent excessive input

levels to the amp.

• A digital effect with three selectable effect types is built-in.

A variety of effects can be applied to add reverberation or

ambiance to vocals or instrumental sounds.

Introduction

Thank you for purchasing the Yamaha EMX640 Powered Mixer. The EMX640 has the following features.

In order to take full advantage of the EMX640 and enjoy long and trouble-free performance, please read this

owner’s manual carefully, and keep it in a safe place for future reference.

Summary of content (16 pages)

PAGE 1
POWERED MIXER Owner’s Manual Introduction Thank you for purchasing the Yamaha EMX640 Powered Mixer. The EMX640 has the following features. In order to take full advantage of the EMX640 and enjoy long and trouble-free performance, please read this owner’s manual carefully, and keep it in a safe place for future reference. Features • Six input channels compatible with mic/line signals are provided.
PAGE 2
Front and rear panel Front and rear panel Control panel ■ Channel section In this section, you can adjust equalization (frequency response), volume level, effect and monitor output levels for the input signal of each channel. 1 HIGH –15 1 –15 +15 LOW –15 +15 MONI 2 0 10 EFFECT 3 0 10 LEVEL 4 0 Note: The signal is sent to the MONITOR bus from a location before the level control (4) of each channel. This means that it will not be affected by the setting of the LEVEL control.
PAGE 3
Control panel ■ DIGITAL EFFECT section This section allows you to turn the built-in digital effect on/off and to select the effect type. 3 ■ EFFECT section This section allows you to adjust the level of the signal sent from the EFFECT bus to an external effect device. VOCAL L HALL 8 6 EFFECT OUT S HALL ON EFFECT 7 DIGITAL EFFECT 6 Effect select switch Select the effect type for the built-in digital effect.
PAGE 4
Front and rear panel ■ MONITOR section ■ MAIN section This section allows you to adjust the tone and volume of the MONITOR bus, and specify the mix level of the built-in effect. This section allows you to adjust the tone and volume of the MAIN bus, the mix level of the built-in effect, and the mix level of the external input.
PAGE 5
Control panel ■ POWER AMP section This section allows you to select the signals that will be output from the built-in two-channel power amplifier, and to select the BRIDGE mode. I ■ POWER indicator & PHANTOM switch K 1 POWER ON OFF 2 5 PHANTOM +48V LIMITER L MAIN BRIDGE MAIN MAIN MAIN MONITOR J POWER AMP I LIMITER indicator This indicator lights up when the level of the signal output from the power amp section reaches the maximum and the limiter is activated.
PAGE 6
Front and rear panel Input/output panel Hi-Z Hi-Z Hi-Z Hi-Z 1 LINE 2 1 LINE 2 Lo-Z Lo-Z Lo-Z Lo-Z MIC MIC EFFECT OUT MONITOR TAPE REC IN OUT 1 FOOT SW SEE REAR PANEL CAUTION 2 1 Channel input jacks (Hi-Z, Lo-Z) 1~4 These are the input jacks for channels 1~4. By using the PAD switches (control panel 5) you can connect any of the jacks to a wide range of sources from mics to line level devices (synthesizers or rhythm boxes etc.).
PAGE 7
Rear panel 7 • REC OUT jacks: The MAIN bus signal before it has passed through the MASTER control and graphic equalizer The nominal input level and impedance are – 10 dB/600Ω for the AUX IN jack, and –10 dBV/ 600Ω for the TAPE IN jacks. 6 External output jacks (REC OUT/MONI- • MONITOR jack: The MONITOR bus signal which has passed through the Monitor MASTER control and graphic equalizer TOR/MAIN) These are output jacks which send line level signals from the EMX640 to external devices.
PAGE 8
Connections Connections When connecting various devices, be sure to use cables and plugs of the appropriate standard. ■ Speaker connection There are three ways in which speakers can be connected to the EMX640; a single speaker each can be connected to either the A or the B jack of POWER AMP 1 and of POWER AMP 2, two speakers can be connected in parallel to both the A and B jacks of POWER AMP 1 and of POWER AMP 2, or a single speaker can be connected to the BRIDGE jack (bridge connection).
PAGE 9
Basic Operation 9 Basic Operation This section explains basic operation of the EMX640. Connecting microphones and instruments 1 Before connecting mics or instruments, make sure that the power of all equipment (where applicable) is turned off. Also make sure that the level controls of each channel of the EMX640 and the MASTER control of the MAIN section are turned down.
PAGE 10
Example setups Example setups This section provides some ways in which the EMX640 can be used, and explains connections and operation. As a conference PA system/installed sound system Here is an example of using the EMX640 as a conference PA system or as an installed sound system.
PAGE 11
As a band PA 11 As a band PA Here is an example of using the EMX640 as a small PA for a band. In this example, the monitor speakers are being sent a mix that is independent of the MAIN speaker mix. An external effect such as delay or reverb is also being used. Connections Note: Set the power amp select switch of the POWER AMP section to the “MAIN MONITOR” position. If you are using an external effect, we recommend that you turn down the EFFECT RTN controls of the MAIN and MONITOR sections.
PAGE 12
Example setups Sending an independent mix to the monitor speakers 1 Set the MONITOR section MASTER control to the √ position. 2 Raise the MONI controls for the channels that you wish to hear from the monitor speakers. Note: The MONI controls are not affected by the level settings of each channel. This allows you to create a mix that is independent of the MAIN section. 3 Use the graphic equalizers and MASTER controls of the MAIN/MONITOR sections to adjust the overall volume and tone.
PAGE 13
Specifications 13 Specifications ■ General specifications Maximum output power 200 W/4Ω @0.5% THD at 1 kHz Frequency response 20 Hz~20 kHz +1 dB, –3 dB @1 W output into 8Ω (POWER AMP OUT) 20 Hz~20 kHz +1 dB, –3 dB @+4 dB output into 10 kΩ (MAIN OUT, MONITOR OUT, EFFECT SEND) Total harmonic distortion Less than 0.5% @20 Hz~20 kHz, 100 W output into 4Ω (POWER AMP OUT) Less than 0.
PAGE 14
Specifications ■ Input specifications Input level Input connectors PAD CH INPUT (Lo-Z) (CH1~4) OFF CH INPUT (Hi-Z) (CH1~4) OFF Actual load impedance Nominal impedance Connector type Sensitivity1 Nominal level Max. before cliping 50~600Ω Mics –62 dB (616 µV) –50 dB (2.45 mV) –20 dB (77.5 mV) 600Ω Lines –32 dB (19.5 mV) –20 dB (77.5 mV) +10 dB (2.45 V) 50~600Ω Mics –52 dB (1.95 mV) –40 dB (7.75 mV) –10 dB (245 mV) Phone jack 600Ω Lines –22 dB (61.
PAGE 15
Dimensions D: 275 ■ Dimensions W: 480 H: 275 260 470 Unit: mm MAIN EFFECT MONITOR ■ Block and Level diagram PHANTOM +48V HA EQ EQ LEVEL EFFECT 125 250 MID PAD LIMITER 1 MASTER HIGH Hi-Z LOW PAD HA 1 REC OUT 2 EQ ADD LEVEL HIGH LOW LINE MID 5, 6 1 MAIN BRIDGE MAIN MAIN MAIN MONITOR EFFECT LIMITER 2 AUX IN A POWER AMP 2 B PA AUX IN SUM EQ MONITOR TAPE IN VOCAL L HALL S HALL DIGITAL EFFECT EFFECT RTN 4k 8k MASTER 125 250 1 TAPE IN 2 BRIDGE INV MONI 2 A POWER
PAGE 16
FCC INFORMATION (U.S.A.) 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.