PROSPEC 1U – MASTER SECTION
LED Power On Indicator
Illuminates when AC power is applied to the unit and its DC Power supplies are operating properly. This
unit is to be powered from a switched AC source of 100 to 240 Volts at 50/60Hz with no manual voltage
selection required for different operating voltages. This unit may to be left on at most times and draws
less than 25 watts.
MASTER OUTPUTS (Left-Right, Center, Mono)
Left / Right and Mono Level Control
This single level knob simultaneously adjusts the Left, Right and Center output levels of the mixer and has
a control has a range of from cut-off to +10dB of gain above unity. The use of a single control simplifies
the operation of the mixer be it used in a Mono, Stereo, or LCR installation as all output levels remain
proportional in output level.
Master Output Metering (Left - Right - Center Outputs)
The post-fader levels of the Mono, Center, Left and Right outputs are displayed on the 3 master meters.
Sum L-R Switch (Illuminated when activated)
Sums the Left and Right Mix buses to a mono signal while not affecting the Center output of the mixer.
This allows for separate left and right speakers in an installation to carry they same signals and is a simple
solution for situations where each left and right speaker location cannot cover near 100% of the audience
area making a stereo mix ineffective.
Left / Right XLR Balanced Output Connectors
These three XLR output connectors provide an o4dBu balanced line level output (100 ohm
symmetrically-balanced) signal for each of the consoles primary outputs.
Note that when the front panel L-R
Sum switch is selected, that the sum of Left and Right appears as the same mono signal on both Left and
Right XLR output connectors.
HEADPHONE MONITOR SYSTEM
Headphone Level Control
This control adjusts the level being fed to the headphone system.
1/4” And 1/8” Headphone Connectors
A 1/4” and a 1/8” set of headphone connectors are located on the front panel of the console.
Center (C) Headphone Monitor Source Switch (Illuminated when selected)
When this switch is selected, it will route a post master level Center signal equally to the left and right
stereo headphones as a “phantom center” image. Note: Center and Left-Right monitor switch may be
selected and monitored simultaneously.
Left-Right (L-R) Headphone Monitor Source Switch (Illuminated when selected)
When selected, this switch will route a post master level left-right signal to the left and right stereo
headphone and monitor level controls. Note: Left-Right and Center monitor switch may be selected and
monitored simultaneously.
Automatic Solo to Headphones
When any input channels Solo switch is selected (as indicated by the channels solo switch being illuminated), the selected
input channels solo signal will automatically override the default Left-Right and/or Center monitored signal.
LINKING SYSTEM
A multi-pin connector system is provided that allows the ProSpec pre output level mix-buses and Solo
systems of multiple mixers to be linked together. Contact APB about made-to-order cables tailored to
your specific need.
