This is topic QSC Q-Sys Core 500i in multiple auditoriums? in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.


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Posted by Ariel Vocal (Member # 6912) on 10-14-2016, 11:00 PM:
 
anyone has experience using a single QSC Q-Sys Core 500i processor in multiples auditoriums with 7.1 sound systems? What are the pros and cons of this system?

Thank you!
 

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Posted by Marco Giustini (Member # 4544) on 10-15-2016, 03:34 AM:
 
there has been a post with some pictures.
Quite interesting, my only concern is reliability and serviceability - would you feel confident working with one auditorium knowing that other 5 screens are currently on screen using the same processor?
 

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Posted by Brad Miller (Member # 2) on 10-15-2016, 08:00 AM:
 
It can and has been done, but to expand on Marco's comment, would you feel comfortable if (or possibly "when") one auditorium's sound processor fails that you lose FIVE auditoriums???

I think not. That concept ranks right up there with the idea of a 5-plex running content off of one "streaming central TMS server".

Now the Q-SYS Cores can be setup to run in a failsafe mode, so there is a redundant Core ready to hop online in a split second, but again it is my strong opinion that redundancy should be reserved to protect important/large auditoriums and not merely as a cost-cutting measure.

The Core 110f is a low cost Q-SYS Core of which I've installed a dozen of and they are very nice indeed and ideally suited for conventional 5.1/7.1 auditoriums as a cinema processor. I would recommend you look into that model.
 

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Posted by Steve Guttag (Member # 268) on 10-15-2016, 01:13 PM:
 
And now QSC has the digital front end for it with the DAX602 and DAX802.

Me personally, I could definitely see running multiple auditoriums with a redundant system...particularly for any move-over houses. Though for "premium" houses are the big theatre(s)...no, I'd keep them as islands.
 

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Posted by Carsten Kurz (Member # 5396) on 10-15-2016, 07:33 PM:
 
No AES inputs?

- Carsten
 

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Posted by Steve Guttag (Member # 268) on 10-15-2016, 07:41 PM:
 
The 110f is analog in/out. No dataports either.
 

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Posted by Anders Nordentoft-Madsen (Member # 3334) on 10-27-2016, 07:16 AM:
 
We are doing this with as much as 4 screens (7.1) on one core, with redundancy on both core and network, it has been working flawlessly (only a case of a dead switch has made the system swap to the redundant network)

We are planning to use 110f at the next installs running 6 screens on one core (since 110f has 256 channel vs 128 on a i500). 110f has no space for AES input carts, instead using a I/O frame pr screen will do. This will also spare the need to do CAT7 cabeling from servers to core). But since 110f's are cheaper that i500 the cost will compairable to the other setup, and no need to split the AES input to 2 cores. So all in all an easier install...
 

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Posted by Brad Miller (Member # 2) on 10-27-2016, 12:48 PM:
 
Let me know how that cost-saving tactic goes for you on that day when there is some sort of hiccup in the network and you lose 6 screens all at once while you reboot a managed switch.

The 110f Cores are inexpensive. I just don't get the logic.


 

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Posted by Marco Giustini (Member # 4544) on 10-27-2016, 03:37 PM:
 
I'm with Brad here.
It's a nice exercise but it's a ticking bomb. The system will fail one day and you'll lose all 6 screens in one go.
Not worth.
 

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Posted by Anders Nordentoft-Madsen (Member # 3334) on 11-08-2016, 05:47 AM:
 
You did get the part about redundant cores AND network/switches, right? Oldest install has been running 1½ years without any problems...
 

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Posted by Carsten Kurz (Member # 5396) on 11-08-2016, 07:10 AM:
 
How does that actually work with redundant cores? Two Core devices in a failover configuration?

And does it really pay out over multiple conventional CPs per auditorium pricewise?

I guess with distributed I/O, it is a bit easier to place equipment, although some may say the best place for auditorium equipment is still the central booth rack.

- Carsten
 

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Posted by Brad Miller (Member # 2) on 11-08-2016, 12:44 PM:
 

quote: Anders Nordentoft-Madsen

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You did get the part about redundant cores AND network/switches, right? Oldest install has been running 1½ years without any problems...

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