Alto APM80.1000, User Manual, Page: 12 / 23

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17
Pushing the switch to right will apply +48V phantom power only to
the 8 XLR microphone inputs.
PHANTOM 48V Switch
18
This switch provides three modes: MAIN/MAIN; MAIN/MONITOR;
BRIDGE. Select any one of these modes to specify the signals to
be routed to the corresponding jacks according to the speaker
connection at speaker jacks on the rear panel.
The details refer to later content.
AMPLIFIER MODE Switch
4.3 MASTER SECTION INPUT and OUTPUT Jacks
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19 20 21
19
Use the balanced MONITOR jack to connect the input of external monitor amplifier or active monitor speaker.
MONITOR OUT Jack
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The both jacks are used to output the main mix signal to an external amplifier or active speaker.
MAIN OUT Jacks
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This is a stereo phone type output jack, it is used to send out the monitor signal to a pair of headphones.
HEADPHONE OUT Jack
AUX2
OUT
STEREO
RTN
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AUX2 OUT Jack
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STEREO RTN. Jack
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It is available only to the XLR MIC sockets. Never plug in a micro-
phone when phantom power is already on. Before turning phantom
power on, make sure that all faders are all the way down. In this
way you will protect your stage monitors and main loudspeakers.
The phone jack is used to output the line level signal of AUX2 bus.
Generally, it is available to connecting effects unit.
Use the stereo phone jack to return the sound of an effect unit to
the main mix. You can also use it as the extra auxiliary inputs.