The mic-channel is the hardware input channel (top row faders in Totalmix)
Don't pull down faders of hardware output channel.
You have to follow exactly !
Click onto the hardware output channel where the loudspeakers are connected.
Are the speakers on AN1/2 output ?
OK, then click with the mouse cursor into the channel (on the fader or next to it)
The channel gets highlighted, you can see that ?
That's important, it means this output is now selected as active submix (receiving signals from the input channels and software playback channels)
Then watch the top row faders with the mic input signal, the fader with the mic input signal is not yet down, pull it fully down.
That's it.
M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue