Channel Inserts - Mackie 406M Owner's Manual

Unbalanced 1/4" TS Plug
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.
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.
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.
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.
Mono Channel Strip
Tip = Send (output to effects device)
Ring = Return (input from effects device)
Sleeve = Common ground (connect shield to all
22
SLEEVE
TIP
Unbalanced TS (tip-sleeve) lines can be ac-
You can connect an input signal to both the

Channel Inserts

The mono channels are equipped with INSERT
This is a TRS jack specially configured as a
ring
(TRS plug)
tip
sleeve
This plug connects to one of the
mixer's Channel Insert jacks.
three sleeves)
The INSERT jack can also be used as a di-
SLEEVE TIP
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
TIP (HOT)
not activate the jack switch and will not open
SLEEVE (SHIELD)
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.
(TIP = SEND to effect, RING = RETURN from effect.)
SEND to processor
"tip"
"ring"
RETURN from processor
MONO PLUG
Direct out with no signal interruption.
Insert only to first "click."
MONO PLUG
Direct out with signal interruption.
Insert all the way in to the second "click."
STEREO
PLUG
For use as an effects loop.
Channel Insert jack
Channel Insert jack
Channel Insert jack