Hey guys!

I am using the MAudio 1814 with Sonar Platinum. I have a keyboard Coaxial SPDIF output connected to the 1814 Coaxial SPDIF Input via the breakout cable. I am monitoring the output from out 3/4 of the 1814.

In Sonar I insert a MIDI and play a sound, everything works. What I am unable to do is control the Main Output, the 3/4 from the Sonar Master Channel. I have set the master channel to output 3/4 but nothing happens. I deleted the default Master and created it again specifying the channel as a Monitoring channel, I again assigned the ports but nothing happens. Cannot turn volume up or down.

I tried different variations as follows: 

MASTER CHANNEL: 
Input = 1814 SPDIF Stereo 
Output = 1814 3/4. 
Does not control sound. 

MASTER CHANNEL: 
Input = 1814 3/4. 
Output = 1814 3/4. 
Does not control sound. 

MASTER CHANNEL: 
Input = not set 
Output = 1814 3/4. 
Does not control sound. 

The problem with this is that I have multiple MIDI connected and I have to keep messing with the volume of all the tracks or control the main from the 1814 Control/Utility panel.

Well, in case anyone is experiencing similar issues: I was able to resolve this using the following method:

1. Delete Master Track (This track will work only for audio tracks)
2. Add a New Audio Track
3. Set the Track as In Monitoring by selecting the Input Monitor Checkbox
4. Set the track input to the input your interface: Because I am getting all of my input via SPDIF Coaxial, I set the track input to Stereo SPDIF.
5. Next, set the output to the output of your interface used for monitoring. I am using port 3 and 4 to powered monitors.
6. Finally, in my audio interface, I turn off input monitoring by simply clicking the port so that it is not active (blue).

And that's it, I am able to control the master out put of the Audio Interface.