Powering
The A20-Nexus is powered from TA4 (10-18 VDC), PoE+, from the 8-Series (via expansion port), or via XL-WPTA4
AC mains adapter (purchased separately).
The headphone knob ring LED illuminates blue during power up, then goes out once fully booted.
When the Nexus is first powered on, the last accessed RX View is displayed.
Tip:
Reducing A20-Nexus power consumption:
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Turn off unused receiver channels. See 1RX View.
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Disable Dante by setting Network > Port Configuration to Control Only, All Ports
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Where possible, power via TA-4 or the 8-Series. While PoE is a practical and convenient option for powering the
A20-Nexus remotely, it is slightly less efficient than straight DC. This is due to the finite efficiency of the PoE injector and
the internal PoE supply of the Nexus.
Powering when Nexus is operated standalone (not docked to an 8-Series)
Connect a 10-18 VDC power source (20 watt minimum) to the TA4 DC power inputs and/or PoE+ power source (30 watt minimum)
to ethernet port ‘Dante/Ctrl 1’. Connecting multiple power sources allows for redundancy since the A20-Nexus seamlessly switches
between power sources should one fail. The power source with highest voltage takes precedence and is displayed along with its
voltage beneath the Power menu icon in the Main Menu and in screen 1 of the Power menu.
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To turn Nexus on, press the triangle button or, with Power menu >‘Turn on when power is applied’ enabled, simply
connect a power source.
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To turn Nexus off, press and hold the triangle button until the ‘Powering down ..” progress bar completes.
Powering when Nexus is docked to an 8-Series
Connect power to the 8-Series. Power is supplied to the Nexus from the 8-Series expansion port.
Note:
When docked, powering via the A20-Nexus TA4 or PoE+ power inputs is disabled.
Ensure that the 8-Series System Menu > Expansion Port is set to On.
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If Power menu >‘Turn on when power is applied’ is enabled, Nexus automatically powers on when the 8-Series is turned
on.
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If Power menu >‘Turn on when power is applied’ is disabled, turn on the 8-Series then press the triangle button to turn on
Nexus.
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To turn Nexus off but keep the 8-Series on, press and hold the triangle button until the ‘Powering down ..” progress bar
completes.
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To turn off both the 8-Series and Nexus, move the 8-Series power toggle switch to Off.
A20-Nexus
User Guide
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