MoogSubharmonicon | General Troubleshooting

For general troubleshooting of the Subharmonicon, we recommend following the steps:

1. Perform a NOTE CALIBRATION by checking through the following steps:

• Power on the Subharmonicon.
  
  
• Leave the instrument powered on for at least 20 minutes to warm up.
  
  
• Press and hold the SUB 1 buttons in BOTH the SEQ 1 ASSIGN and SEQ 2 ASSIGN sections simultaneously for 5 seconds.
  
  
• You will see the Sequencer 1 Step LEDs blink back and forth somewhat erratically while the process is in place. When the Note Calibration finishes, the LEDs will stop blinking and return to normal function.
  
  
• You can also press and hold the EG button to listen to the oscillators calibrate while the Note Calibration is in progress.
  
  

2. Perform a FIRMWARE RELOAD 

• Download the latest firmware update HERE.
• Connect Subharmonicon to your computer using a USB-to-MIDI cable or via your MIDI-enabled interface. 
  
  • NOTE: Avoid connecting through a USB hub, if possible, as many USB hubs do not work reliably and can cause the update to fail. Drag the following files from the Subharmonicon_Firmware_v1_1_1 folder into your SysEx application's main window: — subharmonicon_FIRMWARE_INVALIDATE.syx — subharmonicon_FIRMWARE_ERASE.syx — Subharmonicon_Firmware_v1_1_1.syx 
• Select your MIDI interface as your MIDI output device in the SysEx application (SysEx Librarian for Mac - Bome SendSX for Windows). 
  
  • NOTE: In SysEx Librarian, this is found in a drop-down menu at the top of the application window; in Bome SendSX, there is a MIDI OUT menu on the menu bar. 
    
    
• Send or Play subharmonicon_FIRMWARE_INVALIDATE.syx from your SysEx application to your Subharmonicon. You should see the Step 1 LED of Sequencer 1 blinking on/off; this means the unit is now in Boot-Loader Mode. The old firmware still needs to be erased. 
• Send or Play subharmonicon_FIRMWARE_ERASE.syx from your SysEx application to your Subharmonicon. You should see the Step 2 LED of Sequencer 1 blinking on/off; this means the old firmware has been successfully erased and the instrument is ready for new firmware.
• Send or Play the new firmware file, Subharmonicon_Firmware_v1_1_1.syx. The Sequencer 2 LEDs will "fill up," lighting progressively from left to right to indicate that the firmware file is received. When the firmware upload is complete, the Step 3 LED of Sequencer 1 will blink a few times to indicate successful firmware installation. 
• Congratulations! Subharmonicon will reboot with its customary light show and is ready to use. 
  
  

If you are having MIDI connectivity issues, verify that you are using the dongle that shipped with the Subharmonicon rather than one from another manufacturer.