Stereo Returns; Talkback Mic - Mackie Onyx 4 Bus Owner's Manual

Internal jumpers are provided to change the DIRECT
OUTS to post-EQ on a channel-by-channel basis, if
desired. This requires some soldering skills, so contact
Tech Support for information on how to access the
pre/post-EQ jumpers for the DIRECT OUTS.
See Appendix B for a wiring diagram of the DIRECT OUT
connectors.
77. MATRIX OUT
These 1/4" TRS jacks provide balanced line-level sig-
nals for the MATRIX A and B mixes. These can be con-
nected to the inputs of an amplifier, powered speaker,
headphone distribution amplifier, or recording device.
78. MON(ITOR) OUT
These 1/4" TRS jacks provide a balanced line-level signal
that can be used to provide another main mix output (with
MAIN TO MON [51] selected in the PHONES/MONITOR
Section), or to monitor soloed channels.
Connect these outputs to the inputs of an amplifier,
powered speaker, headphone distribution amplifier, or
recording device.
7. TAPE IN/OUT
Use the TAPE OUT jacks to capture the entire perfor-
mance to tape. The signal at these jacks is the main mix,
after the MAIN INSERTS [83], the MAIN MIX FADER [72],
and the COMPRESSOR [41].
Use the TAPE IN jacks to connect the outputs from any
stereo line-level signal source, such as a tape player, CD
player, MP3 player, television audio, etc., to provide inter-
mission entertainment. Push in the BREAK switch [61] to
route the TAPE IN signal to the mains (and disconnect the
main mix signal from the MAIN OUT), and push in the TO
MON/PHONES switch [60] to route the TAPE IN signal to
the MONITOR and PHONES outputs.
17 16 15
INSERT INSERT INSERT INSERT
LINE
LINE LINE LINE
BAL/UNBAL BAL/UNBAL BAL/UNBAL BAL/UNBAL
MIC MIC MIC MIC
DIRECT OUTS
POST GAIN / INSERT
9-16
(BALANCED)
14 13 12 11
INSERT INSERT INSERT
LINE LINE LINE
BAL/UNBAL BAL/UNBAL BAL/UNBAL
MIC MIC MIC
1 - 8
(BALANCED)

80. STEREO RETURNS

These 1/4" TRS jacks accept balanced or unbalanced
line-level stereo signals from an external processor or
other line-level device. The STEREO RETURNS use a
technique called jack normalling. If a signal is plugged
into the LEFT (MONO) side and nothing is plugged into
the RIGHT side, the signal is automatically routed to both
LEFT and RIGHT sides. As soon as something is plugged
into the RIGHT side, the normalled connection is broken
and the LEFT and RIGHT inputs become stereo inputs
(LEFT goes to the LEFT MAIN OUT and RIGHT goes to the
RIGHT MAIN OUT).

81. TALKBACK MIC

This is where you plug in your talkback microphone.
This female XLR connector does not have phantom power,
so use a dynamic microphone or a self-powered condenser
microphone.
8. LEFT/RIGHT MAIN OUTS
There are two sets of outputs for the Left/Right Main
Outputs: Male XLR connectors that provide balanced
line-level signals and 1/4" TRS connectors that provide
balanced or unbalanced line-level signals. Each XLR
connector is in parallel with its corresponding 1/4" TRS
connector, and carries exactly the same signal.
This represents the end of the mixer chain, where
your fully mixed stereo signal enters the real world.
Connect these to the inputs of your main power ampli-
fiers, powered speakers, or serial effects processor (like
a graphic equalizer, or compressor/limiter if you are not
using the built-in stereo compressor on the main outs).
10 9 8
INSERT INSERT INSERT INSERT
LINE LINE
LINE LINE
BAL/UNBAL BAL/UNBAL BAL/UNBAL BAL/UNBAL
MIC MIC MIC MIC
CAUTION
7 6 5 4
INSERT INSERT INSERT
LINE LINE LINE
BAL/UNBAL BAL/UNBAL BAL/UNBAL BAL/UNBAL
MIC MIC MIC
Owner's Manual
3 2 1
INSERT INSERT INSERT
LINE LINE LINE
BAL/UNBAL BAL/UNBAL
MIC MIC MIC