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4
676
Installation
Installation Recommendations
FOR RACK MOUNT USE ONLY. Install the 676 in a standard 19” rack with the provided rack screws. The 676 should not
be mounted above or below anything that generates excessive heat. Ambient temperatures should not exceed 95ºF (35ºC)
when equipment is in use.
Making Connections
WARNING! If connecting a ribbon or dynamic microphone, ensure the +48V button is disengaged before connecting
the microphone to the 676.
The 676 has balanced line outputs that can be connected to any balanced or unbalanced line-level device. To connect the 676
to your system:
1� Ensure the power is turned off on all interconnecting equipment and the 676 before making audio connections.
2� See ‘Application Guide’ on page 19 for application system diagrams and notes which can be used for reference
when connecting the 676 to your system.
3� Make audio connections via the XLR or 1/4˝ TRS connectors according to application needs (see ‘Audio Cable
Diagrams’ on page 25 for additional information on cable wiring). Either the XLR or 1/4˝ output connectors for
each output (i.e., PREAMP or COMPRESSOR / LIMITER output) can be used for balanced or unbalanced connections.
Connecting to both XLR and 1/4˝ outputs simultaneously (as shown in the below diagram) is perfectly acceptable as long
as the combined parallel load is 5kΩ or greater. This is typically not a problem since most modern-day audio devices have
been designed with high-impedance line inputs. If desired, parallel resistance calculators can be found online and used
to verify if the parallel load meets this criteria. Simply enter the input impedance for the two receiving devices into the
calculator to calculate the combined parallel load. Note that connecting both XLR and 1/4˝ outputs to an unbalanced and
balanced input simultaneously will cause the balanced line to become unbalanced.
or
To Device 2 Input
To Device 1 Input
Combined Load
5kΩ or Greater
Combined Load
5kΩ or Greater
To Device 2 Input
To Device 1 Input
Applying Power
1� Ensure your monitoring system is turned down before applying power to the 676.
2� Connect the power cord to the AC power inlet on the 676’s back panel and route the AC power cord to a convenient
power outlet away from audio lines.
3� Turn the 676 power switch to the on position.
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