Quick Start Setup Guide
We’ve prepared this preliminary Quick Start Setup Guide to get you and your new Omnia.9sg up and
running as quickly as possible.
It is deliberately brief and does not provide a full explanation of all available controls and settings.
A complete user manual is currently being prepared and will be published soon, but because many of the
controls are identical to those found in our Omnia.9 processor you may find value in downloading its full
user manual from the Omnia website at
http://omniaaudio.com
in the interim should you require more
detailed documentation.
Omnia.9sg is a slim 1RU design so it doesn’t take up much vertical rack space, but it is deep. Accordingly,
you may wish to enlist the help of an assistant when racking it up and ensure there’s nothing to obstruct
it toward the back of the rack.
The unit is fan cooled but leaving an empty rack space directly above and below it is still good practice for
both Omnia.9sg and the equipment directly above and below it. Air is drawn in via an intake near the front
right side of the unit (looking at the front panel) and exhausted near the front left side, so ensure there are
no obstructions around these areas that would impede air flow.
Physical Installation
Connect AC power to both of the internal power supplies. There is no power switch.
It is always possible for a power supply to fail and so having redundant supplies does help protect you
against losing power altogether in that event. In reality, it is far more likely that the unit will lose power
because of an interruption to the circuit feeding it. Therefore, good engineering practice dictates that each
supply should be fed from a different source. At minimum we recommend that each source should be a
good quality UPS with adequate surge protection. In an ideal world (where everyone gets along and you
got to build the plant of your dreams from scratch with an unlimited budget) each would be fed from a
completely different circuit for maximum redundancy.
Next, connect the audio inputs as appropriate for your installation. Omnia.9sg accepts balanced
professional line-level analog audio via its Left and Right Analog Inputs and AES/EBU digital audio on
standard XLR connectors via its AES inputs. Two composite (MPX) inputs are also provided and can
accept a full MPX signal from the composite output of another processor.
In the event of a power (or software) failure, Omnia.9sg provides a hard relay bypass. When the bypass
relay is engaged, MPX Input 1 is directly connected to MPX Output 1 while MPX Input 2 is directly
connected to MPX Output 2. Accordingly, it is possible to take the composite output of a hot backup
processor or stereo generator and feed it into the MPX input corresponding to the employed MPX Output.
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