ART Pro Audio MX624 - Six Channel Stereo Mixer - Manual (Page 5)

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Additionally, the ZONE 1 and 2 BUS INPUTS may come in handy as extra stereo
inputs. Note, however, that these inputs do not have their own level control and the
zone assignment is hard-wired.
Outputs
ZONE 1 and 2 OUT (LEFT and RIGHT)
These four 1/4-inch mono (TS) jacks provide a stereo signal from each of the two
zones of your MX624 to destination devices, such as amplifiers, powered speakers, or
main mixers. These outputs are directly affected by the ZONE 1 and 2 LEVEL
controls, as well as the associated BASS and TREBLE controls. Use shielded cables
with 1/4-inch mono (TS) plugs to connect to these outputs.
Front Panel Connections
Inputs
MIC 1
This female XLR connector is similar to the two rear panel XLR connectors in all
respects, with one important exception. A signal input here can be used to lower the
volume of, or "duck", the other five input channels before they are routed to the zone
outputs. A typical application would be the lowering of the music volume in a restaurant
to announce that someone's table is ready.
The Operation section contains information on the front-panel DUCK switch, which
enables or disables ducking, and a description of the rear-panel DIP switches which
provide options for modifying ducking behavior.
CHANNEL 6 STEREO INPUT
The mini stereo phone jack (1/8-inch TRS) provides a handy input for the signal from
an MP3 player, phone or tablet. It is connected in parallel to the rear-panel stereo RCA
phone jacks.
Refer to the BLOCK DIAGRAM on pages 10 and 11 for more information on how
these connections are routed internally.