POWERED MIXER
E
Owner’s Manual
Contents
Front and rear panel ............................................ 2
Control panel .......................................................... 2
Input/output panel .................................................. 6
Rear panel .............................................................. 7
Connections ......................................................... 8
Basic Operation ................................................... 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.
