Mackie 406M, Owner'S Manual

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SLEEVE (SHIELD)
TIP (HOT)
TIP SLEEVE
TIP
SLEEVE
Unbalanced 1/4" TS Plug
The
INSERT
jack can also be used as a di-
rect out from the mic preamps to tape. If you
insert a TS (mono) 1/4" plug halfway into the
INSERT
jack (to the first click), the plug will
not activate the jack switch and will not open
the insert loop in the circuit (thereby allowing
the channel signal to continue on its merry way
through the mixer). This allows you to tap the
channel signal at that point in the circuit with-
out interrupting normal operation.
If you push the 1/4" TS plug in to the second
click, you will open the jack switch and create
a direct out, which
does interrupt the signal in
that channel.
Do not overload or short-circuit the signal
you are tapping from the mixer. Doing so will
affect the internal signal.
Direct out with no signal interruption.
Insert only to first “click.”
Channel Insert jack
Channel Insert jack
Channel Insert jack
Direct out with signal interruption.
Insert all the way in to the second “click.”
For use as an effects loop.
(TIP = SEND to effect, RING = RETURN from effect.)
MONO PLUG
MONO PLUG
STEREO
PLUG
Unbalanced TS (tip-sleeve) lines can be ac-
commodated via the TRS jack. Make sure the
cord terminates with a TS plug (like a guitar
plug), or if it’s a TRS plug (like a headphone
plug), make sure the ring is tied to the shield,
preferably at the source.
You can connect an input signal to both the
MIC
input and the
LINE
input. The signals are
summed together prior to the
INPUT LEVEL
SET
control so they are both affected by it. On
the stereo channels 7 & 8, the inputs are
summed after the
INPUT LEVEL SET
control
and only the
MIC
input is affected by it.
Channel Inserts
The mono channels are equipped with
INSERT
jacks for connecting external processors into
each channel’s signal path. The insert point
comes after the Mic/Line preamp’s
INPUT LEVEL
SET
control and just before the EQ controls.
This is a TRS jack specially configured as a
combination Send/Return connection point. It is
configured with the Tip = Send, Ring = Return,
and Sleeve = Ground. This has become some-
what of a standard in the industry, and many
cable manufacturers make cables especially
for this purpose. With nothing plugged into the
INSERT
jack, the send signal is directly connected
to the return pin via the normalling jack.
“tip”
This plug connects to one of the
mixer’s Channel Insert jacks.
“ring”
tip
ring
sleeve
SEND to processor
RETURN from processor
(TRS plug)
Tip = Send (output to effects device)
Ring = Return (input from effects device)
Sleeve = Common ground (connect shield to all
three sleeves)
MIC
1
INSERT
LINE
Mono Channel Strip