(Pro Tools HD and Pro Tools with Complete Production Toolkit Only)The LFE Enable button (located in the Options section) is on by default, and enables plug-in processing of the LFE (low frequency effects) channel on a multichannel track formatted for 5.1, 6.1, or 7.1 surround formats. To disable LFE processing, deselect this button.
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The LFE Enable button is not available if the plug-in is not inserted on an applicable track.