Buses - Calrec SUMMA User Manual

FIGURE 2 - INPUT SIGNAL FLOW – STEREO CHANNEL
External Inputs
• External inputs take signals into Summa from I/O box input ports, Hydra patchbay outputs or Summa's own
output ports, and make them available for monitoring and metering.
External Tone Input
• Patching a third party tone generator to the external tone input allows the external tone to be used as the tone
source across the console, rather than the internal oscillator.
Talkback Input
• Patching to the talkback input allows any microphone connected to any I/O box input port to be used as the
talkback source. The built-in talkback microphone connects directly to Summa's back panel and must be
connected to an I/O box input port and then patched to the talkback input in order to be used.

Buses

Groups
• Multiple channel Inputs can be sub-mixed by routing them to groups.
• Groups can be processed.
• Groups can be routed to any other output or bus.
• Groups are not available for patching.
AFL
• The after fader level signals from multiple paths can be sub-mixed by routing them to the AFL bus.
• When paths are AFL'd the console monitor feed is replaced by the AFL bus, providing a non-destructive solo.
PFL
• The pre fader level signals from multiple paths can be sub-mixed together by routing them to the PFL bus.
• Settings are available to output the PFL bus to its own dedicated loudspeaker, the small loudspeakers or the
console monitors.
CALREC
Putting Sound in the Picture
35