I’m a new user currently on a Trial of Roon and trying to see if it fits my needs. I’m having trouble configuring my audio device in the application.
I’m using an M-Audio FastTrack pro USB DAC, on Mac OSX 10.13.4. The device has 4 channels of output (2 stereo streams), and in the Mac Audio Midi setup, as well as other applications that I use for DJing, the device appears as 4-channel, where I can then assign streams to each of the 4 outputs (2 pairs of L/R channel).
I’m trying to accomplish a similar setup in Roon where I can use the Procedural EQ Mix functionality, to send the Left/Right audio signals of my music to both streams on the device, and equalizer them separately, resulting in 2 sets of stereo line outs that I can send to my amplifiers.
Following the guides, I see that in the Device Setup, there should be an option for Channel Layout, where I can switch the default 2.0 Stereo to Quad/5.1, and then be able to assign that channels in Mix. However, in my Device Setup page, I do not see the “Channel Layout” option as it appears in the documentation.
Thanks for contacting support regarding this issue. You wouldn’t necessarily need to change anything in Device Setup screen if using a USB DAC, the Channel Layout is meant for HDMI multi-channel outputs.
You can set the Mix by going to your DSP Engine -> Add Filter -> Procedural EQ -> Mix should get you to the screen where you can set this up and the settings should automatically be applied:
Thanks for your reply. I tried following the steps above, and have set the Output rules as follows:
1 Left to 1 Left
2 Right to 2 Right
3 Left to 5 Back Left
4 Right to 6 Back Right
However, during playback I still only get sound out of the 2 front channels. I use this USB DAC with other applications, and it seems to be fine outputting 4 channels with those apps. Is there perhaps any other custom configuration/mapping in ROON, or in Mac OSX system properties that I could be missing?
I’m going to borrow another USB DAC to test tomorrow to see if it’s perhaps just a compatibility issue with the FastTrack Pro, as it is quite a few years old.
How are you outputting to the FastTrack DAC? Are you making use of CoreAudio? I would try the output with CoreAudio and Exclusive Mode enabled to see if that works for you, if you can post a screenshot of your Roon Settings -> Audio Tab that would help clarify some things here as well.