T-44/48 Series Operation Manual
27
T-44/48 Series | rev.
firm. 1.258 and above
There is no ‘standard’ for the relative gains between Analogue and AES3 so depending
on the levels delivered by the audio source, it may be necessary to adjust the digital input gain
trims to normalise them. It is possible to adjust the gain of the AES3 input using the Input Route
AES3 Gain parameter. For example, to achieve 0dBFS = +18dBu, set the AES3 trim to -2dB.
To achieve 0dBFS = +24dBu, set the trim to +4dB.
This device will automatically lock onto any sample rate within the range 28kHz and 108kHz.
4.2.4 Networked Audio (Dante
®
) Inputs
When the Digital Audio Network option is fitted, it is possible to select any channel(s) as
being sourced from this network. To do this, connect the audio network connection to the
connection on the rear of the T-44/48, and set the relevant Input Route menu Source parameter
to “Dante” (for example.)
When the Digital Audio Network input is installed and routed, the “
Net Audio
” indicator
above the encoders will illuminate. This indicator will come on even if there are no cables
plugged into the networked audio port on the T-44/48. As for the AES3 inputs, it is possible to
set the relative gain between an Analogue input and the signals sourced from the Digital Audio
Network (Dante
®
) using the Input Route Dante gain parameter.
The amplifier will automatically select the correct sample rate from the incoming stream.
For other details on the operation of the Digital Audio Network, please refer to the
relevant manufacturer’s documentation.
4.2.5 Automatic Input Selection (Fallover)
It is possible to configure the input selection to be automated. The Input TYPE screen
has a Fallover parameter, which defaults to Manual, allowing you to select what Type of input
you wish to use. When Fallover AES3>Analogue is selected (on an input channel which
supports AES3), then the AES3 source will be automatically selected if it has a valid audio
stream on it. If the AES3 stream should fail, then Analogue is automatically selected instead.
When Fallover Dante>Analogue is selected (when the Dante option is fitted), then the
Dante source will be automatically selected if it has a valid audio stream on it. If the Dante
stream should fail, then Analogue is automatically selected instead.
Similarly, it is possible to select Fallover Dante>AES3 on a channel that supports AES3
and the Dante option is fitted.
The ‘Auto’ setting allows the highest priority input source that is active to be
automatically selected, so the user could just plug a source into any input and it will be
automatically selected.
The priorities are:
Dante first, AES3 second, Analogue third
.
Note that any automatic selection will take precedence over manual selection, so if you
try to manually select Dante when there is no valid Dante stream, then it will revert to the
fallover input source.
