Hi Gary,
I thought I was the only one! I have the same issue with my LHi. Random sync issues where the audio is between 1 and 6 frames late when monitoring via the LHi’s analogue XLRs. Sync is perfect every time when I switch the audio to the Mac’s built in line output.
I’ve been back and forwards with AJA since October – they even sent me a new card over to NZ (!). That didn’t fix the problem however. My current workaround is to monitor audio via the built in line output and then switch back to my trusty AJA IO to output to digibeta (perfect sync every time.)
I’ve tried all the ideas mentioned in this thread, as well as the ones AJA offered, but sync is still random on every format – even just a single DVPAL clip in the timeline. Oddly, sync seems OK in the AJA TV app, just not in FCP.
I bought the LHi because I had such rock-solid performance with the AJA IO…
Hope there is a solution soon.
Cheers,
Mike
MacPro 2,1
FCP 7.0.3
Mac OS X 10.6.7
AJA LHi 8.1.1