MTRX Studio LFE went bye-bye

[remainanon]

I have Dolby over today to do a tune, and part way through the day the LFE signal went away. The problem appears to be in DADMAN

For some reason, sometime during the morning, the level of the sub channel dropped a TON, like 40dB inside DADMAN. We are stumped. We can see an appropriate meter level on the monitor inputs in the MON section, but much lower at the output meter section. Low enough that we thought it was completely not working. Signal is there, but seriously at -40

We are sending pink from the Atmos Renderer via digilink - it's a Production Suite setup. But what we see on the meters seems to us to indicate an issue with Dadman

We have checked all the level points in the monitor setup etc. All other channels are nominal. Signal paths outside of the system (amps etc) are checked and correct.

No fold down paths are active. Unused groups deleted. Same result

Updated to the current version of DADMAN. Same result

HD Native, trash can running Catalina - Pro Tools at most recent version. Dolby renderer at most recent version.

Any ideas? I’m expecting it to be something really dumb that we are just missing


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