Originally Posted by roy_mattie
- converted back to MADI optical into DAW through MADI xtreme 128 (card currently clocked to MADI A card)
Do you mean that the first MADI connector on the Xtreme 128 is *receiving* clock from the MADI signal from the Soundcraft mixer?
If you're not doing this and are, in fact, generating a clock with the 'MADI A' on the Xtreme, you'll get clicks, at least.
Two things to try:
Keep your current connections and make sure that everything in the chain is set to be a MADI slave, except the Soundcraft, which should be (is already?) set to follow the Aardsync.
Alternatively, try sending the wordclock outputs from the Aardsync down to all of the other digital devices, i.e. the MADI Xtreme's wordclock input; the Alphalink, etc. and make sure they're all set to slave to wordclock.
That's all I can think of without more details of your setup.