Main Outputs; Track Returns - SoundCraft K3 theatre User Manual

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The double width master module, typically situated near the right hand side of the
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console, contains the stereo mix output, the operator's headphones and wedge
speaker outputs, a noise or sine wave test oscillator, the solo mode controls and
master solo clear function, internal/external talkback functions, master mute
switches and PSU status indicator LEDs.

Main outputs

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The Stereo Mix Left and Right signals are controlled by the L and R
100mm-travel Faders. Unity gain is at the top of the fader. The left and right outputs
are electronically balanced and appear on male XLR connectors on the rear panel.
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The mix left and right insert points are pre-fade using a ground compensated send
and balanced return. The send and return appear on separate 1/4" jacks on the rear
panel.
The Right master fader can be switched, via a switch which is accessible via the
hole marked FADER MODE, to control the output level of the mono bus signal (
also unity gain at the top). The mono output is electronically balanced and appears
on an XLR on the rear panel. The mono insert point is ground compensated send
and balanced return, and send and return appear as separate 1/4" jacks on the rear
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panel. When the fader mode switch is set so the mono output is being controlled by
the Right fader, the Right output is controlled by the other half of the Left fader.
When the Left and Right faders are both controlling the stereo output, the mono
output is switched to operate at a fixed level (unity gain).
The source of the mono fader is normally the mono bus itself, but internal jumpers
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allow this to be changed to be a derived mono sum of the pre-fade (post insert) left
and right signals. The left/right sum is fed to the mono output after the mono insert
return, which is then disconnected. The mono insert send thus can still function as
a pre-fade output from the mono bus even when the main output has been jumpered
to L/R sum.
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2-Track returns

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There are two 2-track return inputs, electronically balanced, from 1/4" jacks on
the rear con. A switch mounted internally on the PCB allows the sensitivity of both
inputs to be set to either +4dBu or -10dBV. The A/B button selects one or the other
and feeds the signal to the 2-TRACK LEVEL control. The MIX button routes the
signal to the stereo mix outputs, post the master faders.
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The selected 2-track input can be monitored on the monitor/phones outputs before
it is routed to mix, by pressing the 2TRK button on the monitor output section.
Functional Description