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Loss Of Audio in FCP with Kona 2
During a job a few days before Christmas, our Kona 2 system, which has performed flawlessly up to now, suddenly stopped outputting audio from FCP. I have experienced this before with a system running a Voodoo SD Edit card, and It usually occurs when you are scrubbing up and down a timeline with several layers of audio. It always requires a restart on the system to recover the audio playback.
On this occasion, when I restarted, my drive array (a Medea RT2X) also suffered a failure, and the system would not recognise it. I do not know if this was a coincidence, or if the two events (audio loss and drive failure) were simultaneous.
Once the array was re-striped and running (fortunately all data was backed up to the indistructable g-raid) I restarted FCP and tried to run a new sequence. No sound. I entered Log and Capture, and fed in bars and tone, and heard audio incoming, and captured it. Playback gave no audio.
Leaving FCP, I checked the Kona setup, and set the default playback to Input Passthrough. Bars appeared on my monitor and Tone came out of the AES outputs of the card. Phew, I thought, at least the card is OK – audio is passing right through it. It must be a FCP setting.
So I go back to FCP and check EVERYTHING. Honestly – audio mixer setting, sequence settings, audio output devices, A/V settings, preferences, and system settings. EVERYTHING.
After some conversations with customer support (which means calls from UK to US for me), and after reloading Kona software and firmware on the system (although not FCP – not practical – but did trash all prefs), Kona support suggested the card must have developed a fault. They may be right, what with the drive failure as well – But I still can’t believe that’s definitely it – and I don’t want to have to send cards back unless I’m sure.
Does this sound familar to anyone? I had got used to Voodoo cards randomly losing audio, but I didn’t expect it from a Kona…
Hopefully,
Ben
System: Dual 2.7 G5, Kona 2, UL4D, Medea RT2x, Flying Cow (although above output tests done on direct AES monitoring). FCP 5.0.3 QT7, OSX 10.3.4, current Kona drivers.
Editec Broadcast Editing Ltd
EVS and FCP specialists
Current Mac systems All Dual 2.7Ghz with Kona 2 and Digital Voodoo cards, 6Gb Ram, Sapphire, SCSI320 Medea and Huge Arrays.FCP projects include Sky TV coverage of the Ryder Cup and US Open Golf – Live OB specialists. Edit/slomo vehicle.
http://www.editec.co.uk -
2 Replies
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Ben,
Check the following items:
1) in FCP under the view menu is audio scrubbing check on or off? You should have a checkmark next to audio scrubbing to enable audio output during scrubbing or else it will be muted.
2) In system preferences under sound where is the output set to?
3) In FCP under the view menu what is audio playback set to- audio follow video or other and what audio device is the audio being routed to Kona 2?
4)Under FCP user preferences how many tracks do you have set for the real time audio mixing setting?Good luck,
Tony Salgado
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Ben states –
Leaving FCP, I checked the Kona setup, and set the default playback to Input Passthrough. Bars appeared on my monitor and Tone came out of the AES outputs of the card. Phew, I thought, at least the card is OK – audio is passing right through it. It must be a FCP setting.Ben – if you are ok with the Kona control panel, and not with FCP, it’s FCP. You say its “not practical” to reload FCP. Well, guess what – you will go thru the aggrivation of getting a replacement Kona 2 card, and it will be your software install. Go to the Apple Website and MANUALLY uninstall FCP. It’s a long process (printed in 2 pages from the Apple support site), and reinstall FCP. Then reinstall the AJA Kona 2 drivers, and your problems will be gone.
Bob Zelin
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