Quick update: the card is passing audio out of its stereo 1/4" jack as it should. The next step would seemingly be to try connecting MADI via the BNC i/o instead of optical.

Hi Ramses

Thanks for your reply, my apologies for not getting back to you sooner, I was away for the holidays.

The Hammerfall settings are as the image:
https://www.dropbox.com/s/7sxrgjdotrm9h … 0.JPG?dl=0

The 8x192 is very simple to setup, there are some dip switches on the rear to select MADI connection via optical (toslink) or coaxial; they are setup to use the optical connection.

I have also tried disconnecting the optical (toslink) and using the coaxial MADI i/o instead, changing the Hammerfall settings accordingly and the dipswitches on the Mytek MADI DIO card accordingly.

I have also tried having both optical and coaxial connected at the same time and setting MADI in to auto, but in the Hammerfall settings the MADI input status just keeps changing between optical and coaxial.

It’s as if there is no MADI communication taking place at all. In the SyncCheck box I have ‘Word Clock Sync’ and ‘MADI No Lock’; the no lock status is constantly refreshing as if it’s looking for a signal.

As far as I can tell, the Mytek 8x192 is setup for 64ch and 48k frame, the manual is very straightforward.

I wish I still had the AlphaLink as it would be so easy to determine whether the problem is with the HDSPe card or the Mytek. In my experience, the HDSPe card and Hammerfall DSP settings are so easy to setup, I’m quite sure it’s not user error on my part; no matter what I try the MADI error led on the HDSPe card remains lit red.

I’m in contact with Thomann and Mytek support but so far they haven’t been able to pinpoint the issue.

Thanks again for any help, it is very much appreciated.

Thank you for your input Matthias, it is very much appreciated. I completely understand what you are suggesting in terms of troubleshooting and I will do as you say asap tomorrow.