ART Pro Audio Digital MPA-II - Two Ch. Mic Pre w/ A/D Conversion - Manual (Page 10)

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When the switch is in the “Dual” position the output controls act on only their respective channels.
+4/-10 switch (rear panel)
The +4/-10 switch is used to set the output level of the DIGITAL MPA II for the appropriate system
levels. This feature allows you to match 0 VU on the meters of the DIGITAL MPA II and your mixer or
other equipment.
When depressed, 0 VU on the output meter corresponds to +4dBu on the outputs. In –10 mode, the
output level measures –10dBV.
Meter Trim
The Meter Trim is used to adjust the Meter’s “0” point when. This may change if the unit is NOT
mounted with the front panel perpendicular to the floor.
Using a small flat-blade screwdriver you can mechanically fine-tune the meter indicator position if, for
example, it does not rest at the leftmost position when the unit is OFF.
Adjustments for feedback readings, when the unit is in use, are internal and are not user serviceable.
Digital section front panel controls
Digital Level control
The levels driving the A/D converter are adjusted with this control. The topology of the DIGITAL MPA
II lends itself to simultaneous use of the analog and digital outputs, as each has its’ own level control.
Common to both is the output signal of the tube circuit.
The Digital Level control is variable from +10dB to - ∞ (fully muted).
Located before the Digital Level control is the insert jack, allowing processing to be added before
digital conversion.