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D-Command, Alpha/Delta-Link, AD9200 & Genelec DSP-series

jonesh, modified 12 Years ago.

D-Command, Alpha/Delta-Link, AD9200 & Genelec DSP-series

Youngling Posts: 2 Join Date: 4/28/09 Recent Posts
Hi!
I'm configuring a Pro Tools system based around a D-Command with an X-Mon, wich the Pro Tools system interfaces with using an SSL Delta link/Alpha link-combo. This is run with an analog out to a Genelec AD9200 A/D Converter, to a 7270A and five 8240:s.

It is my understanding that the AES/EBU outputs 1 through 3 should be connected to the 7270 inputs 1, 2 and 4.
1-1
2-2
3-4
And that the 7270 outputs should be connected like this, and AES/EBU channel switches set to:
1A-L
1B-R
2A-Ls
2B-Rs
4A-C
4B-LFe (internally connected in the sub)

And is this correct; the channel switches are "on" when set to the upper position. I.e. when a loudspeaker should be set to channel A, the first switch should be set to up?

Also, wich is the correct channel order to ensure compatibility with the D-Command surround panner; does it have to be Pro Tools convention L C R Ls Rs Lfe or (more logically) the 7270 L R Ls Rs C Lfe? Or, even more preferrably, ITU standard L R C LFe Ls Rs?

Many topics. Greetings from northern Sweden!

Edit: When setting all buses, output patches and cables/dipswitches this way it worked. Are there any options to this solution or is it the way to go?
christophe-anet, modified 12 Years ago.

Re: D-Command, Alpha/Delta-Link, AD9200 & Genelec DSP-series

Jedi Knight Posts: 188 Join Date: 3/23/09 Recent Posts
Hello,

Thanks for your post and question. Let's review your points step-by-step:

7270A inputs - you are right, the subwoofer input 4 has to be used if you run an LFE channel, which seems to be the case in your setup.

7270A outputs - you have full freedom to decide, using the manual cabling wizard, what AES/EBU subframe (A or B) is assigned to what channel (L or R). The same choice exists for the C and LFE channel pair.

Our Rapid Cabling Wizard does follow a default logic which is the one you report (A-Left, B-Right), but you are not obliged to follow that scheme.

Also, you are right - to select for example the A channel the DIP switch needs to be on the upper position which is ON.

Concerning the channel order, you have again full freedom and flexibility for this issue. You need to decide in the source (D-Command) how you want to assign the channels and then follow the same setup in the GLM, that's all.

Here is an extra tip: if you want to use the ITU standard channel allocation, the cabling from the Genelec AD9200A converter to the 7270A inputs can be modified in the following way to enable to select the rapid cabling in GLM:

AES 1 -> input 1
AES 2 -> input 4
AES 3 -> input 2

Hope it is helpful.
Best regards,