Page 1
2EMX66M
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that
basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the
users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in per-
sonal injury, destruction of expensive components and failure of the product to per form as specified. For
these reasons, we advise all Yamaha product owners that all service required should be performed by an
authorized Yamaha Retailer or the appointed service representative.
IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certifica-
tion, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any
form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefor, inevitable and
changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this
buss).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to
the unit.
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical / electronic and / or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other
entities) to cause cancer and / or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL / ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHAT SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to
solder / flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING:THIS APPARATUS MUST BE EARTHED
IMPORTANT:The wires in this main lead are coloured in accor-
dance with the following code:
GREEN-AND-YELLOW: EARTH
BLUE: NEUTRAL
BROWN: LIVE
As the colours of the wires in the main lead of this apparatus may not
correspond with the coloured markings identifying the terminals in your
plug, proceed as follows:
The GREEN-and-YELLOW wire must be connected to the terminal in the
plug that is marked with the letter E or the safety earth symbol (or coloured
GREEN or GREEN-and-YELLOW).
The BLUE wire must be connected to the terminal that is marked with the
letter N (or coloured BLACK).
The BROWN wire must be connected to the terminal that is marked with
the letter L (or coloured RED).
This applies only to products distributed by Yamaha Kemble Music (U. K.) Ltd.
WARNING
Components having special characteristics are marked and
must be replaced with parts having specification equal to those
originally installed.
Page 2
3 EMX66M
SPECIFICATIONS
General specifications
- 0 dB=0.775 Vrms Maximum output power300 W + 300 W/4-¦ @0.5% THD at 1 kHz (SPEAKERS OUT A, B)
205 W + 205 W/8-¦ @0.5% THD at 1 kHz (SPEAKERS OUT A, B)
600 W/8-¦ @0.5% THD at 1 kHz (BRIDGE)
Frequency response20 Hz-20 kHz +1 dB, -3 dB @1 W output into 8-¦ (SPEAKERS OUT)
20 Hz-20 kHz +1 dB, -3 dB @+4 dB output into 10 k-¦ (MAIN OUT, MONITOR OUT, EFFECT SEND)
Total harmonic distortionLess than 0.5% @20 Hz-20 kHz, 150 W output into 4-¦ (SPEAKERS OUT A, B) Less than 0.3% @20 Hz-20 kHz, +14 dB output into 10 k-¦ (MAIN OUT, MONITOR OUT, EFFECT OUT)
Hum & noise
(Average, Rs=150-¦)
(with 20 Hz-20 kHz BPF)-124 dB equivalent input noise, -65 dB residual output noise (SPEAKERS OUT)
-88 dB residual output noise (MAIN OUT, MONITOR OUT)
-79 dB (83 dB S/N)
MAIN OUT, MONITOR OUTMaster level control at nominal level and all channel
level controls at minimum.
-69 dB (73 dB S/N)
MAIN OUT, MONITOR OUTMaster level control at nominal level and 1 channel
level control at nominal level.
-75 dB (79 dB S/N)
EFFECT SENDAll channel level controls at minimum.
-69 dB (73 dB S/N)
EFFECT SEND1 channel level control at nominal level.
Maximum voltage gain88 dB CH IN (Low-Z) to SPEAKERS OUT (CH1-4)
66 dB CH IN (Low-Z) to MAIN OUT, MONITOR OUT (CH1-4)
72 dB CH IN (Low-Z) to EFFECT OUT (CH1-4)
48 dB CH IN (Low-Z) to REC OUT (CH1-4)
56 dB CH IN (Hi-Z) to MAIN OUT, MONITOR OUT (CH1-4)
26 dB AUX IN to MAIN OUT
24 dB 2TR IN to MAIN OUT
66 dB MIC IN to MAIN OUT, MONITOR OUT (CH5-6)
26 dB LINE IN to MAIN OUT, MONITOR OUT (CH5)
46 dB Super Hi-Z IN to MAIN OUT, MONITOR OUT (CH6)
Crosstalk at 1 kHz65 dB adjacent input, 65 dB input to output
Input channel equalizationΒ±15 dB Maximum
HIGH 10 kHz shelving*
MID 2.5 kHz peaking
LOW 100 Hz shelving*
*Turn over/roll-off frequency of shelving: 3 dB below maximum variable level.
Meters5 POINTS LED METER (-10, -5, 0, +3, +6 dB) (MAIN OUT, MONITOR OUT)
Graphic equalizer7 bands (125, 250, 500, 1 k, 2 k, 4 k, 8 kHz), Β±12 dB Maximum (MAIN OUT, MONITOR OUT)
Internal digital effect8 programs (VO.ECHO 1, VO.ECHO 2, VO.REVERB 1, VO.REVERB 2, HALL 1, HALL 2, ROOM,
PLATE)
Phantom power+15 V is supplied to electrically balanced inputs for powering condenser microphones via 2.4 k-¦
current limiting/isolation resisters.
LimiterComp. : THD-₯0.5% (SPEAKERS OUT)
LIMIT indicatorsTurns on. : THD-₯0.5% (SPEAKERS OUT)
Protection Circuit (Power Amp.)POWER Switch on/off Mute, DC Detection, Temp (Heatsink Temp-₯90ΛC)
Foot switch (FC5)DIGITAL EFFECT MUTE : on/off
Optional accessoriesRK-88
, FC5
Power requirement/Power
consumptionUSA and Canada 120 V AC 60 Hz/250 W
Europe 230 V AC 50 Hz/300 W
Other 240 V AC 50 Hz/300 W
Dimensions (WxHxD)482 x 305 x 328 mm
Weight15 kg
Supplied accessoriesAC power cord, Owners Manual
