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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Long speaker runs VS. short runs.
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Tony Bandiera Jr
Film God
Posts: 3067
From: Moreland Idaho
Registered: Apr 2004
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posted 04-28-2018 05:42 PM
Marcel: My apologies, no calling you out was intended, but it was not clear to whom Steve was replying to. (And I was quoting Steve, not you or Carsten.)
Steve, Not trying to "catch" you at anything, just pointing out the contradictions in your posts on essentially the same topic. We will have to agree to disagree on the cost issue, as our locations are different and as such introduce variables that we would not have in common. (For example, as Mark pointed out, codes here and back in Cali. would mandate more sprinklers than normally required for a "basic" behind the screen, if any powered speakers or an amp rack is installed.)
As for the separate circuits, IMHO the modest cost increase of the (what would be, based on your criteria) 2-3 extra circuits is minimal, and would ensure reliability and prevent a near-total loss of sound behind the screen if an amp develops a hard fault (which has happened.)
Call it silly if you want, but even in a conventional, old-school install with the amps racked in the booth, there had been several times a bad amp tripped the single breaker powering the whole rack of amplifiers (or in the rare times they put two circuits in, the design had all the stage speakers on one breaker, and the subs and surrounds on the other), which resulted in a near total loss of sound and a mad scramble to figure out which amp was the troublemaker.
I worked for the old RCA Service Company and other companies in Southern California for the first part of my career, and had over 150 locations and close to a thousand screens in my "kit" as it was called. As well as installing around 100 private screening rooms. So I speak based on real world, long term experience as a cinema tech AND licensed electrician.
BTW, I am NOT stuck on applying an older design at all. Again, this thread was and is about the specific situation that Frank asked about.
I am all for the newer tech being applied and used, and yes our experiences differ (I have three decades in the biz myself) and of course our local codes, labor costs, etc. will also differ.
But it all boils down to this: in a given space, what is the best system for the budget at hand, and therefore what equipment and technologies are going to work and meet both criteria? If old school fits the budget and room, that's what should go in. If the budget and room warrant it, I am all for going all-in on QSYS, powered speakers, ATMOS and whatever else the client wants and is willing to pay for. And that's one thing I hope we do agree upon.
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