Knowledge Base


AudioBox 1818: Setup ADAT SMUX mode in Mac OS X


For AudioBox 1818VSL users that wish to use the 24/96 SMUX functionality, you'll need to select 14ch-32bit Float in the drop down next to the Sample Rate selection found in the Audio MIDI Setup.


Step 1: Open up your Application Folder and then open up the Utilities Folder




Step 2: Once in the Utilities folder, run the "Audio MIDI Setup" Utility (icon looks like a single octave keyboard).




Step 3: You'll need to select your AudioBox VSL interface on the left column (see example below),

Make sure the AudioBox 1818 is selected as your default Sound Input Device and default Sound Input Device, open Cogwheel at the bottom of the left column, click it to select your AudioBox to be your default interface for Sound Input and Sound Output.




This will effectively toggle your ADAT to function as 24bit 88.2 or 24bit 96KHz with 4 channel light pipe available.  

18 In / 18 Out 24bit 44.1KHz / 48KHz 8 In / 8 Out Analog + SPDIF + 8 In / 8 Out ADAT
14 in / 14 Out 24bit 88.2KHz / 96KHz 8 In / 8 Out Analog + SPDIF + 4 In / 4 Out ADAT SMUX


Select your Format next to Sample Rate, click the drop down to reveal the two different operating modes:



Input Routing




Output Routing




Please contact PreSonus Technical Support by creating a Support Ticket at for further assistance.

>How to create a support ticket<



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