Question / Help Stereo input to OBS ends up as two left channels and no right channel

[MerrillAldrich]

I am a bit new to this but any insight would help. We are taking USB input from a Vaddio AV bridge, which consists of video and a stereo audio signal. At the source the left and right channels are working correctly (we can pan left and right and the meters read properly, reflecting the change). In OBS, though, what we are getting is the left channel duplicated as the left and right. If we pan our source left, both left and right OBS channels go up, and if we pan it right they both decrease and then disappear.

Is there a software reason or a setting that would make both our output channels pass the left channel signal, and no right channel at all?

For additional context:

1. The upstream device is definitely stereo - it's a professional mixing board
2. We are not intending to force the output to mono - we want the stereo sound! In OBS Advanced Audio settings the checkbox to downmix to mono is OFF, which seems right.
3. The visual meter for this audio capture device shows two bars (left and right) but they are always identical when sound is playing
4. We verified that it's only playing the left input channel by panning the mixing board left and right, which makes the OBS meter go up (both channels) and then down (both channels).

We looked through every setting on both OBS and the AV bridge and I'm stumped.

 

[carlmmii]

If the Vaddio AV bridge supplies its audio independent of the video, then check that it is actually set properly through windows.

Windows Settings -> System -> Sound -> Sound control panel. On the recording tab, go to the properties of your vaddio, and verify that it is set to stereo instead of mono.

If it is set to stereo, then verify that the windows VU meter is showing the same response -- pan from left to right, see if it's behaving identically to OBS. If it is, then there's an issue with how the vaddio is sending audio to windows (either through its own settings, or something between the vaddio and your mixer).

 

[leinadvida]

I´m experiencing the same problem with my Focusrite Scarlett 6i6 1st generation!!

I use Windows 10 and the DAW Cakewalk. I'm picking up my microphone at the first input (L). It goes through a processing inside my DAW (Cakewalk), although I do not play nothing. I just want to insert a reverb on real-time. I addressed the BUS MASTER of my DAW to "Monitor 1" on the soundcard (and with this, it sends L and R), and took care to mute the microphone signal in the mixer of the card´s drive, to prevent feedback.

In OBS STUDIO, however, only the L signal comes in. I don't want to convert the signal to mono, which, it seems to me, is the only solution that some users are giving. I want to transmit the stereo signal. In other words, the signal with the processed sound (compressors and reverbs). Not mono. What could I do?

Please, someone help!

 

[MerrillAldrich]

@carlmmii thanks so much for taking the time to respond. Our A/V people all got together to do some end-to-end troubleshooting and what was causing this was indeed a Windows sound setting: Sound control panel > Choose device > click Properties > Advanced tab > UNcheck the option "Enable Audio Enhancements." They said switching that off immediately cleaned up the sound and made it correct stereo/separate left and right channels.