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Kona LH analogue monitoring

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Brian Cutts
Kona LH analogue monitoring
on May 19, 2010 at 10:56:47 am

We've got a couple of Mac Pros with Kona LH cards installed which are being used with Picture Ready for capture of live footage.

The incoming material has 4 channels of embedded audio and we need to monitor either tracks 1 & 2 or 3 & 4. The only connectors on the breakout cable of the Kona card are analogue A1 & A2. I see that within the AJA control panel you can select the audio monitoring from the analogue out section but this does not seem to affect the output through these analogue XLRs.

So does anybody have an idea how this can be done... should we be able to select which of the 4 channels is fed to the XLRs or do we need to use a separate breakout box to achieve this? The problem I have is that we're setting this up for the World Cup and therefore need to resolve this quite quickly.

Thanks,

Brian



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Doug Beal
Re: Kona LH analogue monitoring
on May 19, 2010 at 2:38:52 pm

You also have to assign tracks in the timeline and set the sequence up for 4 channels.
How these channels are mapped is dependent on what you need if it's 4 mono or 1 stereo and two mono or 2 pairs of stereo. Once the sequence is set you can map where those channels go. they will follow the assigns via embedded and aes. if you need to monitor this you will either need a disembedder whose analog output feeds a mixer for monitoring, D>A to convert AES to analog and feed a mixer, or switch what you monitor with the control panel.
If you are trying to monitor a live capture without cutting in a timeline assign your channels correctly in the capture tool and look for a mixer with AES ins or D>A's then you can select what you want to monitor by pushing faders.
Cheap D>A A>D behringer SRC 2496. set clock to AES input. it'll lock to your AJA. Need two of them to convert 4 channels
You'll still need an analog mixer to monitor the analog outputs of the converters.
you might find an old O1V with AES ins to achieve the same results.
one would think if your doing a high end production you could get something newer from yamaha roland mackie or others to handle this situation.

Doug Beal
Editor / Engineer
Rock Creative Images
Nashville TN


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Brian Cutts
Re: Kona LH analogue monitoring
on May 19, 2010 at 3:02:22 pm

OK Doug understood.

What we were trying to do is just have a simple monitoring solution for these Picture Ready capture stations with a direct connection to a pair of speakers and using the Kona control panel to select which of the incoming embedded pairs to monitor.

Given that the control panel has a monitoring option which appeared to offer this function we thought we had a solution.

From your response it looks we're going to have to use an external de-embedder for the monitoring with a selectable analogue monitoring output (there's no space on the desk for a mixer). Next problem - we're in South Africa for the World Cup so sourcing additional kit will be 'interesting'.

Thanks for the help.

Brian




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Doug Beal
Re: Kona LH analogue monitoring
on May 19, 2010 at 4:45:51 pm

It might be worth a call to AJA (email).
Picture ready allows you to map multichannel audio and seems to use ch1 for TC
perhaps the AJA folks may have a workflow or setup recommendation for this application w LH
they are very savvy dudes

Doug Beal
Editor / Engineer
Rock Creative Images
Nashville TN


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Brian Cutts
Re: Kona LH analogue monitoring
on May 19, 2010 at 5:02:49 pm

Good idea... I'll email them in the morning.



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