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Help With HD Video 5.1 Audio Set Up
Old 16th August 2005
Gear Nut

Help With HD Video 5.1 Audio Set Up

I'm in the process of setting up Matrox based HD Video/Audio editing system for a video suite.

The Axiom HD box has the following outputs:
4 Stereo Pairs AES/EBU output
4 Stereo Pairs of HD SDI output

1. What make/model device would I need to convert either the AES/EBU or HD SDI output to analog 5.1 to feed the analog inputs of the Genelec 5.1 system (XLR L, C, R, RL, RR inputs with bass management/crossover built into the sub)?

Would this work:

2. Which is preferable to use - AES/EBU or HD SDI to get the 5.1 audio?

3. Is there a hardware volume control and metering device which can control the 5.1 analog output? Make and model?

4. Is there a box which can do all of these things (convert the AES/EBU or HD SDI signal to analog and provide metering and a volume knob)?

Any help would be greatly appreciated. It seems even the manufacturers don't know what devices are needed with their software/hardware to integrate it into a complete system.

Audy O

Old 17th August 2005
Lives for gear
the1Hub's Avatar

i personal like the grace m906 and it comes with aes/ebu connections standard. you dont have to buy a card like with the tascam. only draw back is that it only works up to 5.1
Old 17th August 2005
Gear Nut

Thanks so much...I will check out the 906! Any additional info., suggestions, etc. would be greatly appreciated!

I'll be glad to return the favor.

Audy O
Old 17th August 2005
Lives for gear
hociman's Avatar


If you use the HD-SDI signal, you will need a demuxing device to extract the audio from the signal. I would stick with AES/EBU. We have a Tascasm DS-M7.1, and like it. It doesn't have meters, but it will do 7.1, and if you calibrate your room (as you should), then the SPL readout on its volume control will be meaningful.

You will need to buy AES/EBU cards for the Tascam, but they are not terribly expensive. The whole package is a good value IMO.
Old 18th August 2005
Gear Addict

Audy O...

i don't know the Axio breakout box, but this could
be other choices for your surround monitor control:

SPL Surround Monitor Controller Model 2489


MMC 1 Model 2160 Multichannel Mastering Console


MMC 2 Modell 2486 Multichannel Mastering
The MMC2 is the compact 19” rack format version of the fully-featured MMC1 multichannel mastering console:

Old 18th August 2005
Gear Nut

Jonathan / Angelo:

Thank you both SO much for the info. and suggestions. I was really stumped on this one since I'm an audio guy and not really versed on video.

Audy O thumbsup
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