Topic: DigiFace USB setup only fully functioning at max. sample rate
I’m using a DigiFace USB as output device in my Dirac Live Bass Control setup (LR speakers and currently two subwoofers). The Dirac output channels are assigned to ADAT 1 (L), ADAT 2 (R), ADAT 3 (sub 1) and ADAT 4 (sub 2). DigiFace outputs 1 (ADAT1/2) and 2 (ADAT3/4) are configured as S/PDIF and connected to two stereo DACs.
Everything works as expected when the sample rate of the input signal is 192kHz. At any other sample rate the L+R channels work but the subwoofer channels are silent. This is despite the level meters in both Dirac and TotalMix showing signal on the subwoofer channels.
The DACs handling the L+R and the subwoofer outputs are identical devices, and I swapped them over to rule out a defect in one of them.
What could make output 2 (ADAT3/4) go silent at sample rates other than 192kHz?