Yamaha Mg 206 C Manual

							
Reference
MG206C/MG166CX/MG166C   Owner’s Manual11
Setup
DI
RecorderSynthesizer CD Player
Microphone Po
wered speakers
Po wered monitor 
speakers
Bass
Headphones
Guitar
Effect processor
Effect processor  (exciter) Po
wered monitor 
speakers
MG206C
Rear panel
Reference 
						

							
MG206C/MG166CX/MG166C   Owner’s Manual
Reference
12
Front & Rear Panels
Channel Control Section
1
2
1
5
66
CC
DD
F
G
H
F
G
H
II
EE
0
A
99
77
80
A
BB
43
Channels
13/14 and 15/16 (Stereo)
Channels
1 to 8
(Monaural) Channels
9 to 12
(Monaural)
● MG206C
Channels
17/18 and 19/20 (Stereo)
1
2
1
5
66
C
D
F
G
H
I
E
0
A
99
77
8
3
4
B
C
D
F
G
H
I
E
0
B
A
Channels
9/10 and 11/12 (Stereo)
Channels
1 to 6
(Monaural) Channels
7 and 8
(Monaural) Channels
13/14 and 15/16 (Stereo)
●MG166CX/MG166C
* A MG166C : EFFECT  → AUX3 
						

							
Reference
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual13
1MIC Input jacks
These are balanced XLR-type microphone input jacks. (1:
Ground; 2: Hot; 3: Cold)
2LINE Input Jacks (monaural channels)
These are balanced TRS phone-jack line inputs. (T: Hot; R:
Cold; S: Ground). You can connect either balanced or unbal-
anced phone plugs to these jacks.
3LINE Input Jacks (stereo channels)
These are unbalanced phone-jack stereo line inputs.
4LINE Input Jacks (stereo channels)
These are unbalanced stereo RCA pin jacks.
On channels that provide multiple input jack options
only one type of jack can be used at a time.
5INSERT Jacks
These jacks can be used to insert an external signal-process-
ing device between the equalizer and fader of the corre-
sponding monaural input channel. The INSERT jacks are
ideal for connecting devices such as graphic equalizers,
compressors, or noise filters into the corresponding chan-
nels.
These are TRS (tip, ring, sleeve) phone jacks that
carry both the send and return signal (tip = send/out;
r ing = return/in; sleeve = ground). Patching external
devices via an INSERT jack requires a special cable
such as illustrated below (insert cable sold sepa-
r ately). 
The signal output from the INSERT jacks is
reverse-phased. This should not be a problem
when connecting to an effect unit, but please be
a ware of the possibility of phase conflict when
connecting to other types of device. A reversed-
phased signal may result in degraded sound
quality or even complete sound cancellation.
6GAIN Control
Adjusts the input signal level. To get the best balance
between the S/N ratio and the dynamic range, adjust the gain
so that the PEAK indicator 
9  lights only occasionally and
briefly on the highest input transients. The -60 to -16 scale is
the MIC input adjustment range. The -34 to +10 scale is the
LINE input adjustment range.
7Switch (High-Pass Filter)
This switch toggles the HPF on or off. To turn the HPF on,
press the switch in ( ). The HPF cuts frequencies below
80 Hz (the HPF does not apply to the line inputs of stereo
input channels 
3, 4).
8COMP Control
Adjusts the amount of compression applied to the channel.
As the knob is turned to the right the compression ratio
increases while the output gain is automatically adjusted
accordingly. The result is smoother, more even dynamics
because louder signals are attenuated while the overall level
is boosted.
Av oid setting the compression too high, as the higher
av erage output level that results may lead to feed-
back.
9PEAK indicator
The peak level of the post-EQ signal is detected, and the 
PEAK indicator lights red when the level reaches 3 dB 
below clipping.
F or XLR-equipped stereo input channels, both the post-EQ 
and post-mic-amp peak levels are detected, and the indicator 
lights red if either of these levels reaches 3 dB below clip-
ping.
0Equalizer (HIGH, MID and LOW)
This three-band equalizer adjusts the channel’s high, mid, 
and low frequency bands. Setting the knob to the “ ▼” posi-
tion produces a flat response in the corresponding band. 
T urning the knob to the right boosts the corresponding fre-
quency band, while turning to the left attenuates the band. 
The monaural channels have MID frequency controls to 
adjust the midrange frequency band.
The following table shows the EQ type, frequency, and max-
imum cut/boost for each of the three bands.
* The monaural channel MID frequency can be adjusted from 
250 Hz to 5 kHz. The MID frequency is 2.5 kHz when the 
MID frequency control is set at the center position.
NOTE
NOTE
To  the INSERT I/O jack To
 the input jack of the 
e xternal processorTip: OUT
Tip: IN
To  the output jack of 
the external processor
Sleeve (Ground)
Ring: IN
Tip: OUT
CAUTION
BandT ypeFrequencyMaximum 
Cut/Boost
HIGH
Shelving10 kHz
±15 dB
MIDP eaking2.5 kHz*
LOW
Shelving100 Hz
NOTE 
						

							
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual
Reference
14
AAUX, EFFECT Control
Adjusts the level of the signal sent from the channel to the
AUX and EFFECT buses. These knobs should generally be
set close to the “ ▼” position. These controls send either the
signal from immediately prior to the channel fader (pre-fader
signal) or the signal after the channel fader (post-fader sig-
nal) to the corresponding buses. The types of signals sent by
the AUX and EFFECT controls on each mixer model are as
follows:
• MG206C
AUX1: Pre-fader
A UX2, 3: Pre-fader/post-fader (determined by the AUX
PRE switch 
B)
A UX4: Post-fader
• MG166CX
AUX1: Pre-fader
A UX2: Pre-fader/post-fader (determined by the AUX
PRE switch 
B)
EFFECT: Post-fader
• MG166C
AUX1: Pre-fader
A UX2: Pre-fader/post-fader (determines by the AUX
PRE switch 
B)
A UX3: Post-fader
•T o send the signal to the STEREO bus engage the
ON switch ( ).
• On stereo channels, the L (odd) and R (even) input 
signals are mixed and sent to the AUX and 
EFFECT buses.
BAUX PRE Switch
Selects whether the pre-fader or the post-fader signal is fed
to the AUX buses. If the switch is on ( ), the mixer sends
the pre-fader signal to the AUX buses, so that AUX outputs
are not affected by the channel fader 
I. If the switch is off
()  the mixer sends the post-fader signal to the AUX
b uses.
CP AN Control
P AN/BAL Control
B AL Control
The PAN control determines the stereo positioning of the
channel signal on the GROUP 1/2 and GROUP 3/4 buses or
on the STEREO L/R bus. The BAL control knob sets the
balance between left and right channels. Signals input to the
L input (odd channel) go to the GROUP 1 or 3 buses or to
the STEREO L bus; signals input to the R input (even chan-
nel) go to the GROUP 2 or 4 buses or the STEREO R bus.
On channels where this knob provides both PAN and 
BAL control, the knob operates as a PAN control 
when input is received via the MIC jack or L (MONO) 
input only, and as a BAL control when input is 
received via both L and R inputs.
DON Switch
Turn this switch on to send the signal to the buses. The
switch lights orange when on.
EPFL (Pre-Fader Listen) Switch
This switch lets you monitor the channel’s pre-fader signal.
Press the switch in ( ) so that it lights to turn it on. When
the switch is on the channel pre-fader signal is output to the
PHONES and MONITOR OUT jacks for monitoring.
F1-2 Switch
This switch assigns the channel’s signal to the GROUP 1/2
b us.
To  send the signal to the GROUP 1/2 bus turn the
ON switch on ( ).
G3-4 Switch
This switch assigns the channel’s signal to the GROUP 3/4
b us.
To  send the signal to the GROUP 3/4 bus turn the
ON switch on ( ).
HST Switch
This switch assigns the channel’s signal to the STEREO L/R
b us.
To  send the signal to the STEREO bus turn the ON
s witch on ( ).
IChannel Fader
Adjusts the level of the channel signal. Use these faders to
adjust the balance between the various channels.
Set the fader sliders for unused channels all the way
down to minimize noise.
NOTE
NOTE
NOTE
NOTE
NOTE
NOTE 
						

							
Reference
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual15
1FOOT SWITCH Jack
A Yamaha FC5 foot switch (sold separately) can be connected to this jack \
and used to toggle the digital effects ON and OFF.
2PROGRAM Dial
Selects one of the 16 internal effects. See page 19 for details about the
internal effects.
3P ARAMETER Control
Adjusts the parameter (depth, speed, etc.) for the selected effect. The last
value used with each effect type is saved.
When you change to a different effect type, the mixer automatically
restores the value that was previously used with that type (regard-
less of the current position of the PARAMETER knob). 
These parameter values are reset when the power is turned off.
4A UX Control
Adjusts the level of the signal sent from the internal digital effect unit to
the AUX  buses.
The signal level sent to the AUX buses is not affected by the 
EFFECT RTN fader.
5ON Switch
Switches the internal effect on or off. The internal effect is applied only if
this switch is turned on. The switch lights orange when on.
An optional Yamaha FC5 foot switch (sold separately) can be used to tog-
gle the digital effects ON and OFF.
The ON switch lights and the internal effect unit is active when the
power is initially turned on.
6PFL Switch
Turn this switch on to send the effect signal to the PFL bus.
71-2 Switch
This switch assigns the effect signal to the GROUP 1/2 bus.
83-4 Switch
This switch assigns the effect signal to the GROUP 3/4 bus.
9ST Switch
This switch assigns the effect signal to the STEREO L/R bus.
0EFFECT RTN Fader
Adjusts the signal level sent from the internal digital effect unit to the STE-
REO bus.
NOTE
NOTE
NOTE
Digital Effects* Only the MG166CX has digital effects.
4 3
5
0 2
6 1
7
8
9 
						

							
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual
Reference
16
Master Control Section
0
A
I
G
D
E
C
9
B
6
8
7
54321
H
F
0
A
I
G
E
9
B
H
F
6
8
4
1
3
7
2
5
D
C
Rear panel
● MG206C ●MG166CX/MG166C
* 1, C MG166C : EFFECT  → AUX3 
						

							
Reference
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual17
1SEND Jacks (AUX, EFFECT)
These impedance balanced* TRS phone jacks output the sig-
nals from the AUX/EFFECT buses. The pre-fader send option
should be selected if you are connecting to a monitor system,
while the post-fader send option is the best choice when con-
necting to external signal processors (e.g. effects units).
See “AUX, EFFECT Control” on page 14 for information on
the types of signals sent by the AUX and EFFECT controls
on each mixer model.
2GROUP OUT (1 to 4) Jacks
These impedance-balanced* TRS phone jacks output the
GROUP 1/2 and 3/4 signals. Use these jacks to connect to
the input jacks of an multi-track recorder, external mixer, or
other such device.
3REC OUT (L, R) Jacks
These RCA pin jacks can be connected to an external 
recorder such as an MD recorder in order to record the same 
signal that is being output via the STEREO OUT jacks.
The mixer’s STEREO OUT Master fader has no 
affect on the signal output via these jacks. 
Be sure to make appropriate level adjustments at the 
recording device.
42TR IN Jacks
These RCA pin jacks input a stereo sound source.
Use these jacks when you want to connect a CD player 
directly to the mixer.
Select where you want to send the signal using the
2TR IN switch, and adjust the signal level using the
2TR IN control in the Master Control section.
5RETURN L (MONO), R Jacks
These are unbalanced phone-jack type line inputs.
The signal received by these jacks can be sent to the STE-
REO L/R bus as well as the AUX1 and AUX2 buses. When a
stereo signal is returned a mono mix of the signal is sent to
the AUX1 and AUX2 buses. These jacks are typically used to
receive the signal returned from an external effect device
(reverb, delay, etc.).
• These jacks can also be used as an auxiliary ste-
reo input.
• If you connect to the L (MONO) jack only, the mixer 
will recognize the signal as monaural and will send 
the identical signal to both the L and R jacks.
6STEREO OUT (L, R) Jacks
These jacks deliver the mixer’s stereo output. You use these
jacks, for example, to connect to the power amplifier driving
your main speakers. You can also connect these jacks to a
recording device when you wish to record mixer’s stereo
output while using the STEREO OUT Master fader 
I  for
level control.
• XLR jacks
XLR-type balanced output jacks.
•LINE jacks
TRS phone-type balanced output jacks.
7MONITOR OUT jacks
These are impedance-balanced* TRS phone-type output
jacks.
The signal output by these jacks is determined by the
MONITOR switch, the 2TR IN switch, and the PFL
switches on the input channels.
8PHONES Jack
Connect a pair of headphones to this TRS phone-type output
jack. The PHONES jack outputs the same signal as the
MONITOR OUT jacks.
9PHANTOM +48 V Switch
This switch toggles phantom power on and off. When the
switch is on the mixer supplies +48V phantom power to all
channels that have XLR mic input jacks. Turn this switch on
when using one or more phantom-powered condenser micro-
phones.
When this switch is on the mixer supplies DC +48 V
power to pins 2 and 3 of all XLR-type MIC INPUT
jacks.
• Be sure to leave this switch off if you do not
need phantom power.
• When turning the switch on, be sure that only
condenser microphones are connected to the
XLR input jacks. Devices other than condenser
mics may be damaged if connected to the
phantom power supply. Note, however, that the
s witch may be left on when connecting to bal-
anced dynamic microphones.
•T o prevent damage to speakers, be sure to turn
off power amplifiers (or powered speakers)
before turning this switch on or off. We also
recommend that you turn all output controls
(STEREO OUT Master fader, GROUP 1-2 fader,
GROUP 3-4 fader, etc.) to their minimum set-
tings before operating the switch to avoid the
risk of loud noises that could cause hearing
loss or device damage.
0POWER Indicator
This indicator lights when the mixer’s power is ON.
ALevel Meter
This LED meter displays the level of the signal selected by
the MONITOR switch D, 2TR IN switch E  and PFL
switch. The “0” segment corresponds to the nominal output
level. The PEAK indicator lights red when the output
reaches the clipping level.
BRETURN
•A UX1, AUX2 Control
Adjusts the level at which the L/R signal received at the
RETURN jacks (L (MONO) and R) is sent to the AUX1 and
AUX2 buses.
• STEREO Control
Adjusts the level at which the signal received at the RETURN 
jacks (L (MONO) and R) is sent to the STEREO L/R bus.
•If you supply a signal to the RETURN L (MONO) 
jack only, the mixer sends the same signal to both 
the L and R STEREO buses.
• (MG206C) Signals input via the RETURN1 jacks 
are adjusted using the RETURN1 AUX1, AUX2 and 
the STEREO controls, and signals input via the 
RETURN2 jacks are adjusted using the RETURN2 
A UX1, AUX2 and the STEREO controls.
NOTE
NOTE
NOTE
NOTE
NOTE
CAUTION
NOTE
* impedance balanced
Since the hot and cold terminals of impedance balanced output 
jacks have the same impedance, these output jacks are less 
affected by induced noise. 
						

							
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual
Reference
18
CMaster SEND Controls (AUX, EFFECT)
Adjusts the signal level sent to the SEND (AUX, EFFECT)
jacks.
If you are using the MG166CX, the Master SEND
control (EFFECT) does not affect the level of the sig-
nal sent from the EFFECT bus to the internal digital
effect processor.
DMONITOR/PHONES
•MONITOR switches
These switches select the signal sent to the MONITOR OUT 
jacks, PHONES jack and the level meter from STEREO L/R 
bus, GROUP 1/2 bus or GROUP 3/4 bus.
STEREO L/R bus: STEREO ( )
GROUP 1/2 bus: GROUP ( ), 1-2 ( )
GROUP 3/4 bus: GROUP ( ), 3-4 ( )
• MONITOR Control
Controls the level of the signal output to the PHONES jack 
and the MONITOR OUT jacks.
E2TR IN
•2TR IN Switch
If this switch is set to TO MONITOR ( ), the signals input
via the 2TR IN jacks are sent to the MONITOR OUT jacks,
the PHONES jack, and the level meter. If it is set to TO STE-
REO ( ), the signals are sent to the STEREO L/R bus.
•2TR IN Control
Adjusts the level of the signal sent from the 2TR IN jacks.
The following illustration shows how the switch settings cor-
respond to the signal selection.
*:  When overdubbing, you can adjust the levels of the mon-
itor playback signal and the signal being recorded separately.
MONITOR MIX Signal Flow
If the input channel PFL switch is on ( ), then only
the PFL output from that channel is sent to the MON-
ITOR OUT jacks, PHONES jack, and level meter.
FGROUP 1-2 Fader
Adjusts the signal level sent to the GROUP OUT 1/2 jacks.
GGROUP 3-4 Fader
Adjust the signal level to the GROUP OUT 3/ 4 jacks.
HST Switch
If this switch is on, the signals are sent to the STEREO L/R
b us via the GROUP 1-2 fader or GROUP 3-4 fader. The
GROUP 1 and 3 signals go to STEREO L and the GROUP 2
and 4 signals go to STEREO R.
ISTEREO OUT Master Fader
Adjusts the signal level sent to the STEREO OUT jacks.
SwitchesSignals output via the  MONITOR/PHONES  jacks
PFLMONITOR/PHONES2TR IN
ON——PFL
OFF
STEREO
TO  STEREOSTEREO (+ 2TR IN)
TO MONITORSTEREO + 2TR IN
*
GROUP
1-2
TO STEREOGROUP 1-2
TO MONITORGROUP 1-2 (+ 2TR IN)
3-4
TO STEREOGROUP 3-4
TO MONITORGROUP 3-4 (+ 2TR IN)
NOTEPlayback
signal
Recording signal
2TR IN 2TR IN control
STEREO OUT Master fader MONITOR/PHONES controls
STEREO bus
REC OUT 
jacks MONITOR 
OUT/PHONES 
jacks
NOTE 
						

							
Reference
Front & Rear Panels
MG206C/MG166CX/MG166C   Owner’s Manual19
Digital Effect Program List (Only MG166CX)
* “LFO” stands for Low Frequency Oscillator. An LFO is normally used to modulate another signal, determining the modulation spee d and 
wa veform  shape.
Jack List
*These jacks will also accept connection to phone plugs. If you use monaural plugs, the connection will be unbalanced.
NoProgramParameterDescription
1 REVERB HALL 1 REVERB TIME
Reverb simulating a large space such as a concert hall.
2 REVERB HALL 2 REVERB TIME
3 REVERB ROOM 1 REVERB TIME
Reverb simulating the acoustics of a small space (room).
4 REVERB ROOM 2 REVERB TIME
5 REVERB STAGE 1 REVERB TIME
Reverb simulating a large stage.
6 REVERB STAGE 2 REVERB TIME
7 REVERB PLATE REVERB TIME Simulation of a metal-plate reverb unit, producing a more hard-edged sound.
8D RUM AMBIENCE REVERB TIME A short reverb that is ideal for use with kick drum.
9 KARAOKE ECHO DELAY TIME Echo designed for karaoke (sing-along) applications.
10 VOCAL ECHO DELAY TIME Echo suitable for vocals.
11 CHORUS 1 LFO Frequency Creates a thick sound by modulating the delay time. The PARAMETER control adjusts the frequency of the LFO* that modulates the 
delay time.
12 CHORUS 2 LFO Frequency
13 FLANGER LFO Frequency A sweeping pitched effect.
The PARAMETER control adjusts the frequency of the LFO* that modulates the 
delay time.
14 PHASER LFO Frequency Phase modulation produces a cyclical phasing effect.
The PARAMETER control adjusts the frequency of the LFO* that modulates the 
delay time.
15 AUTO WAH LFO Frequency A wah-wah effect with cyclical filter modulation.
The PARAMETER control adjusts the frequency of the LFO* that modulates the 
delay time.
16 DISTORTION DRIVE Adds a sharp-edged distortion to the sound.
Input and Output JacksP olaritiesConfigurations
MIC INPUT, STEREO OUT Pin 1: Ground
Pin 2: Hot (+)
Pin 3: Cold (–)
LINE INPUT (monaural channels)
GROUP OUT, STEREO OUT, 
MONITOR OUT, AUX SEND, 
EFFECT SEND (Only MG166CX)* Tip: Hot (+)
Ring: Cold (–)
Sleeve: Ground
INSERT Tip: Output
Ring: Input
Sleeve: Ground
PHONES Tip: L
Ring: R
Sleeve: Ground
RETURN
LINE INPUT (stereo channels) Tip: Hot
Sleeve: Ground
OUTPUT
INPUT
XLR Jack
Tip
Sleeve Ring
TRS Phone Jack
Tip
Sleeve
Phone Jack 
						

							
MG206C/MG166CX/MG166C   Owner’s Manual
Reference
20
Troubleshooting
Power doesn’t come on.❑ Is the supplied power adaptor properly plugged into an appropriate AC wa\
ll
outlet?
❑ Is the supplied power adaptor properly plugged into the mixer?
No sound.❑Are microphones, external devices, and speakers connected correctly?
❑ Are the ON switch and ST switch of the channels you are using turned ON?\
❑ Are the channel GAIN controls, Channel fader, STEREO OUT Master fader
and GROUP 1-2/3-4 fader set to appropriate levels?
❑ Are the MONITOR switch and 2TR IN switch set properly?
❑ Are your speaker cables connected properly, or are they shorted?
❑ If the above checks do not identify the problem, call Yamaha for service\
.
(Refer to the page 71 for a list of service centers.)
Sound is faint, distorted, or 
noisy.❑Are the channel GAIN controls, Channel fader, STEREO OUT Master fader
and GROUP 1-2/3-4 fader set to appropriate levels?
❑ Are two different instruments connected to the XLR-type and phone jacks,\
 or
to the phone and RCA pin jacks on one channel? Please connect to only on\
e
of these jacks on each channel.
❑ Is the input signal from the connected device set to an appropriate leve\
l?
❑ Are you applying the effects at an appropriate level?
❑ Are microphones connected to the MIC input jacks?
❑ If you are using condenser microphones, is the PHANTOM +48 V switch
turned ON?
No effect is applied. 
(If you are using MG166CX)❑Check that the EFFECT control on each channel is correctly adjusted.
❑ Be sure that the internal effect unit’s ON switch is turned ON.
❑ Be sure that the EFFECT PARAMETER control and EFFECT RTN fader are
correctly adjusted.
I want spoken words to be 
heard more clearly.❑Be sure that the   switches are ON.
❑ Adjust the equalizers (HIGH, MID and LOW) on each channel.
I want to output a monitor 
signal through speakers.❑Connect a powered speaker to the AUX 1, 2 or 3 jack (MG206C), or to the
AUX1 or 2 jack (MG166CX/MG166C) and turn the PRE switch on each chan-
nel on. Then adjust the output signal by using the AUX controls on each \
chan-
nel and the Master SEND control.
The level meter doesn’t 
show the output signal 
level.❑Are the PFL switches for the channels that you are not using turned on?