MX12/6, 20/6 — Owner’s Manual
Front & Rear Panels
7
q
INSERT I/O Jack (MX12/6:CH1-4, MX20/6:CH1-8)
These are input/output jacks that are positioned
between the equalizer and fader of the input
channel.
They have a nominal input/impedance of 0dB/
600
Ω
and a nominal output/impedance of 0dB/
10k
Ω
.
These jacks can be used to connect devices such
as a graphic equalizer, compressor, noise filter,
etc.
The TRS type phone jack allows bi-directional
connection with the INSERT I/O jack. Connect-
ing a device to these jacks will require a special
insertion cable like the one shown in the diagram
on the right. Please use an optional YAMAHA
Insertion Cable YIC025/050/070, etc.
w
PHANTOM +48V Switch
Turns the phantom power ON/OFF for all channels 1-8.
The MX20/6 has an additional PHANTOM switch for channels 9-16.
Turn the switch ON when you are using condenser microphones, etc.
When the switch is ON, +48V DC is supplied to pins 2 and 3 of the XLR type MIC INPUT connectors.
If phantom power is not required, make sure the switch is set to the OFF position.
Rear Panel
q
e
r
t
y
w
u
i
to the INSERT I/O
jack
to the input jack of
the external processor
to the output jack of
the external processor
Tip
Sleeve
Ring
Tip
Sleeve
NOTE:
With this switch turned ON, it is not a problem to connect balanced dynamic microphones
or line level devices however, hum or malfunction may occur when connecting unbalanced devices
or devices for which the center of the transformer is ungrounded.
e
SEND Jack
• AUX1, AUX2
These are impedance balanced phone type output jacks with a nominal output/impedance of +4dB/
600
Ω
.
The AUX1, 2 bus signals are output from their respective jacks. The jacks can be used to send the
signal to a monitor system such as a cue-box.
