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Author
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Topic: Suggestion for a 4 x 8 AES patchbay for our new cinema room
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Scott Norwood
Film God
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Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99
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posted 05-18-2015 09:34 PM
Wouldn't a standard video patch bay work for 75-ohm AES? I know that a regular composite video distribution amplifier will work fine for AES signals, so I can't imagine why a video patch bay would not. This assumes, of course, that you don't need to actually re-arrange the pairs.
Not sure how much equipment you actually have, but you should consider a DMA8+, which will give you Dolby-E capability for HDCAM tapes (since you mention 5.1) and extra inputs.
With a CP750, you could do this:
D-cinema -> CP750 AES input Blu-Ray -> analog 6-channel "film" input on DMA8+ computer -> AES input on DMA8+ and/or analog non-sync input on CP750 HDCAM -> AES input on DMA8+
Also, look at the Datasat AP20, which gives you more inputs and HDMI right on the box. It also has an optional film card. It does not do Dolby E, though.
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Carsten Kurz
Film God
Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009
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posted 05-21-2015 05:32 AM
Well, if they have the money, why not? I'd just leave away the CP750 in that case, since the Qsys seems to have all that functionality anyway.
Just wondering why in such an environment there is no provision for HDMI? Desktop and Notebook graphics cards will happily output 8ch LPCM at no additional cost, as do ALL current BluRay-Players. The AP20 has 16ch digital IO + analog + various other sources like S/P-DIF, TOSLINK, 4*HDMI.
I think it will do the same, and it certainly has the better user interface. The Qsys will probably shine for very unusual applications, e.g. mixing different sources, e.g. having an input source plus a commentary microphone at the same time. The AP20 has such functionality too, but only in limited combinations, while the Qsys will probably offer this limitless. At a price, of course.
Maybe it offers customizable tablet user interfaces, these become more and more common for these fully configurable audio workhorses.
- Carsten
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Marcel Birgelen
Film God
Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012
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posted 05-22-2015 03:07 AM
quote: Carsten Kurz Well, if they have the money, why not? I'd just leave away the CP750 in that case, since the Qsys seems to have all that functionality anyway.
If money is not a problem, then also throw in a bunch of CXD-Q Network Amps, you can even save a few bucks on output cards .
If everything is already present and available on AES/EBU and the only desire is to switch sources according to a few predefined presets, the Matrix Switcher would probably be the most logical choice.
Also, I didn't really understand the need for the Q-Sys Core in combination with a cinema processor like the CP-750.
I'm not able to find the Q-Sys Core 260i, but the 250i is listed, I guess that would be the model of choice?
quote: Anhtu Vu Ideally i want everything in one box instead of a processor/matrix combo but most important of all, the Qsys sounded better than anything Dolby and Datasat i've tested.
Like Carsten already mentioned, it would just work, but it will be a lot of work to configure and calibrate correctly, since this isn't your average cinema processor. Like I mentioned before, I also don't see any purpose for the CP-750 in this setup. If you have somebody that can assist you or if you're into a little experimenting and do have the time, it sounds like a great thing to do, at least to me.
If not, I'd go for a more off-the shelf solution, just like the AP20, which should be capable of doing everything you need, although not that fancy and configurable.
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