Specifications

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14. Mic mix output: this unbalanced cinch connector contains the mic mix signal from mic/line
inputs 1 to 5 and is meant to be connected to another PM1122 in a chain.
15. Link input: this unbalanced cinch connector accepts the signal from another PM1122 in a
chain. You could also use it as a mono unbalanced line 5 input. The level from this input is
adjusted with the front mic/line 5 + link knob.
16. Mic 1 to 5 phantom switch: ip down the dipswitch from channel 1 to 5 if you want to apply
a 20 VDC phantom power to input 1 to 5. Don’t use unbalanced sources in combination with
phantom power turned on on the same channel !
17. Mic/line 1 to 5 sensitivity knobs: turn these knobs to adjust mic/line 1 to 5 input sensitivity and
gain: the signal/clip led present on mic/line input 1 to 5 is your guide: turn down the knob to
the left rst, and gradually turn it to the right while you are speaking loudly in the mic or while
the line signal is applied. When the signal/clip led turns red, you are overloading the input.
Turn the knob to the left a little until the led doesn’t light up red anymore. Take your time to
preset all mic/line inputs this way.
18. Input 3 to 5 input blocks: connect your balanced mic or line signals on these euroblock
connectors.
19. Input 1 and 2 input blocks: connect your balanced mic or line signals on these euroblock
connectors. Additionally connect the mic 1 and/or mic 2 switch(es) on these blocks to activate
the chime and priority. These contacts can be used for inputs 3-5 as well.
Please note the priority system; the MIC1 contact will mute MIC2-3-4-5 + Music, and the
MIC2 contact will mute Music (if dipswitch 4 is set)
20. Ground connector: connect your system’s ground or safety ground on this connector if this is
not already done by mounting the unit in a properly grounded rack.
For additional functionality, there are also 2 open collector outputs at the rear controlled by the
priority switch, one output per zone. They can only be used by qualied technicians. Maximum
sinkable current per output is 50 mA, maximum voltage is 24VDC. No AC voltages are allowed
on these outputs ! In case of inductive loads such as relays, provide additional measures to avoid
damage to the open collector outputs.
Please use the schematic shown below as a guideline: