On 25/05/2020, Alexandre Ratchov <[email protected]> wrote: > On Fri, May 22, 2020 at 12:35:06PM +0100, Maurice McCarthy wrote: >> Hi, >> >> Since installing 6.7 I've found that human voices in mpv or youtube >> sound either very quiet or as-if "under water" or bubbly. I was >> unable to cure this with sndioctl but succeeded with the old mixerctl >> >> doas outputs.master=200,150 >> > > Most probably the speaker(s) are not properly wired and left and right > channels cancel each other. You could check this as follows: play a > mono file and meanwhile try the following: > > doas outputs.master=200,0 > doas outputs.master=0,200 > doas outputs.master=200,200 > > first two should play but the last one should produce (almost) > silence. > >> If I understand sndioctl well enough this kind of left and right >> speaker adjustment is not possible under sndioctl. dmesg attached. >> > > fwiw, to control individual channels (if hardware allows it), put the > channel number between squire brackets: > > sndioctl output[1].level=0 >
Thank you Alexandre. You were spot on about playing the mono file. I failed to make it clear that I normally use headphones jacked into the onboard sound. (My good lady does not share my taste in music.) It turns out they don't support separate channels. Thanks again for the enlightenment.

