User's Manual

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6. Input Switches
These switches are recessed to prevent accidental switching. You may need to use the tip of your fingernail or an object
with a pointy tip, such as a pen, to activate these switches.
• +4dBu/-10dBv Switch
This switch sets the PA2’s input sensitivity. Select the +4dBu option (switch out) when connecting a mixer or device
which has a nominal output operating level of around +4dBu. Select the -10dBV option (switch in) when connecting
a mixer or device which operates at a lower “consumer” level, such as some DJ mixers or a consumer device with
unbalanced output connectors (such as RCA connectors). If you’re not sure what the nominal output operating level
of your mixer is, check the product’s manual or contact the manufacturer. It’s advised that you reduce your mixer’s
output level and power off your amplifiers or mute the PA2’s outputs before changing the position of this switch.
• Ground Lift Switch
The ground lift switch lifts the pin 1 chassis ground on both input XLR connectors. In most applications, this switch
should be left in the out (disabled) position. If hum becomes an issue and is caused from a ground loop between
your mixer and PA2, try engaging this switch. It’s advised that you power off your amplifiers or mute the PA2’s
outputs before changing the position of this switch.