Ungated Type - Polycom SoundStructure C16 Design Manual

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12

Ungated Type

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To enable or disable the phantom power, expand the level control by clicking
on the expand graphic in the upper right corner and click the phantom power
button which is labeled Phan.
The ungated type user control refers to which signal path to use for the
ungated (or un-automixed) processing path. The decision of whether to use
the ungated version of the input channel processing is made at the matrix
crosspoint as shown in the following figure where the gated type None is
highlighted.