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At the Delta analog outputs, a +4dBu setting will give the “hottest” output signal level.
Generally, this signal level is associated with balanced audio inputs. The Delta 1010LT’s
outputs are unbalanced, but can still interface successfully with balanced inputs. The
Consumer and -10dBV settings are typically associated with unbalanced operation for both
consumer and prosumer audio gear, with Consumer being less hot (-4dBV) and -10dBV
being the least hot. As a rule of thumb, if your signal levels in the computer are sufficient
but your target device is not receiving enough level, try a hotter output signal level setting.
At the Delta analog outputs, a +4dBu setting will give the most headroom for recording,
allowing the Delta 1010LT to accept a hotter signal level. If your source audio device puts
out less signal, such as unbalanced consumer and prosumer equipment, then the lower
settings of Consumer and -10dBV will lower the headroom, bringing record ceiling closer
to the signal that you are recording. As a rule of thumb, the lower the signal level of your
source audio, the lower the input signal level should be set.
A unique case here are the Delta 1010LT’s inputs 1&2. While all of the other inputs and
all of the outputs are unbalanced on RCA connectors (single conductor with a shield),
inputs 1&2 will accept balanced cables on XLR jacks (two conductor with a shield). You
may want to set these inputs to a +4dBu signal level setting while setting the rest of the
inputs to a different line level setting.
Eight faders are also available for setting each input and output level either individually
or in stereo pairs. This should be considered an advanced settings page, useful when the
source audio or target devices are diverse and need custom configuration. To access this
second layer, click the button labeled “Sliders” located in the lower left-hand corner of the
Variable Signal Levels section of the Hardware Settings page.
Initially, the location of the faders will reflect the last radio button selection made in the
first layer. After a change has been made in the second layer, the first layer will show no
radio button selection, indicating that a custom setting has been made. The screenshot
below shows this second layer with the first two faders adjusted to a line level of +4dBu
for the two balanced inputs on XLR jacks.
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