Symphony I/O Mk 1
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      Symphony 64 | ThunderBridge not recognizing Symphony I/O

      Symptom: Symphony I/O does not show up in Maestro or properly function when connected to Symphony 64 | ThunderBridge 

      Solution: There are a number of logical and easily correctable causes for this.  Please examine the following steps:

      1. Confirm that you have both the latest firmware and software installed.
      2. Verify that the PC-32 cable is properly connected from the main port on the back of Symphony I/O to the first port on Symphony 64 | ThunderBridge.
      3. Confirm that the Symphony I/O is set to "Symphony" AIM mode.  To verify, push in and hold on the right-side front-panel encoder. This will bring you to the AIM selection menu. If its not already selected, scroll to Symphony and then push in on the right-side encoder to select and the unit will restart.
      4. Make sure you have selected the correct “Source” setting in Audio MIDI Setup.
        • Open “Audio MIDI Setup” (Applications Utilities Audio MIDI Setup) and select Symphony64 on the left-side device column.
        • Go to the “Source” drop-down menu in the main part of the Audio MIDI Setup window and set it for the appropriate port selection. If you’re using only 1 Symphony I/O, set it for “PCI Card 1, Port 1 (Chs 1-32)”. If you’re using 2 SymI/O’s, set it for “PCI Card 1, Port 1-2 (Chs 1-64)”. After changing Source selection, quit Audio MIDI Setup and restart the computer.