7
Operating Manual - MX-406 Stereo Microphone/Line Mixer
6.5 Stereo Line Input
The stereo line RCA inputs have a nominal oper-
ating level of -10dBu to match most consumer audio
sources. This signal is controlled by the Stereo Line In-
put dial on the front panel. This input is also used as a
stereo effects return, or as a stacking input for adding
additional mixers.
6.6 Stereo Line Out
The stereo line outputs are nominal -10dBu "pre-
master", so they are not affected by the settings of the
main Left/Right output controls. These outputs would be
used for making a pre-output fader recording off of the
stereo mix, or for stacking the MX-406 stereo output into
another mixer.
6.7 Aux Master Output
The 1/4" jack aux master output is used to drive
a monitor or zone amplifier, effects processor, recording
device, or any function which requires level control inde-
pendent from the main stereo mix. It is pseudo-balanced,
which means that while it is a single ended signal, it has
balanced impedance for low noise when driving an active
balanced input circuit over a long distance.
6.8 Mono Output
The XLR mono output combines the left and right
stereo signals (pre output fader), and uses an isolation
transformer capable of driving 600 ohm lines. Pin 1 is
6.2 Input Pad
The input pad is a 20dB attenuation switch on
the rear panel for use with the XLR microphone inputs.
It should normally be left in the "out" position for best
signal to noise ratio and should only be used when the
input is being overdriven with the gain control at its mini-
mum setting.
6.3 Line Input
The line input is a standard 1/4" TRS active bal-
anced type found in the same "combo jack" connector as
the mic input. The line input balanced impedance is
20K
Ω
. It will accommodate a wide range of input levels.
6.4 Channel TRS Insert
A channel TRS insert patch point allows a de-
vice such as a remote level controller, graphic equalizer,
noise gate, compressor/limiter, or direct out recording
device to be used with one or more input channels.
The MX-406 TRS insert jacks use the tip for out-
put and ring for the returning input. These signals will
be unbalanced, so cable length should be at a minimum
to maintain low noise.
To use the TRS insert as a Direct Line Output
(pre EQ) for recording, you must make a special cable
with tip and ring connected at the MX-406 end and a tip-
sleeve mono plug at the other end. Connecting tip and
ring at the mixer insert jack is necessary for uninterrupted
signal within the mixer when using direct line outputs.
(-)
(+)
2
3
1
-20 dB Pad
(Mic Only)
6 Insert
ut Ring=In
Ch.6
Mic/Line Input
-20 dB Pad
(Mic Only)
Ch.5 Insert
Tip=Out Ring=In
Ch.5
Mic/Line Input
-20 dB Pad
(Mic Only)
Ch.4 Insert
Tip=Out Ring=In
Ch.4
Mic/Line Input
-20 dB Pad
(Mic Only)
Ch.3 Insert
Tip=Out Ring=In
Ch.3
Mic/Line Input
-20 dB Pad
(Mic Only)
Ch.2 Insert
Tip=Out Ring=In
Ch.2
Mic/Line Input
-20 dB Pad
(Mic Only)
Ch.1 Insert
Tip=Out Ring=In
Ch.1
Mic/Line Input
PU
S
H
PU
S
H
PU
S
H
PU
S
H
PU
S
H
