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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Line Array speakers - useful in movie theatres?

   
Author Topic: Line Array speakers - useful in movie theatres?
Eric Robinson
Jedi Master Film Handler

Posts: 538
From: Santa Rosa, CA
Registered: Jan 2005


 - posted 01-04-2011 11:37 AM      Profile for Eric Robinson   Email Eric Robinson   Send New Private Message       Edit/Delete Post 
Line array speakers appear to be an ideal component for movie theatres, but, considering that no one is using them, there must be some drawback.

Might it be that the dispersion angle is too wide, thus not allowing a tightly defined left center and right region for the audience?

Or might it have something to do with the B Chain audio processing equipment?

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 01-04-2011 11:46 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Most of them just don't have the capability of the controled coverage and spl

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Tony Bandiera Jr
Film God

Posts: 3067
From: Moreland Idaho
Registered: Apr 2004


 - posted 01-04-2011 01:14 PM      Profile for Tony Bandiera Jr   Email Tony Bandiera Jr   Send New Private Message       Edit/Delete Post 
What Gordon said, and another thing that so many people can't get through their thick heads (I am referring to so many folks who, in trying to save a buck on installs, try to substitute speakers) is that film tracks are mixed using speaker systems with the specific characteristics, and use of other speakers will result in very unsatisfactory sound.

Some examples I have encountered:

A home screening room where the vendor installed $50,000 "high-end" music speakers..they sounded great with music sources but were very harsh and made dialog unintelligible when running film.

Another room used live sound speakers from a major player in sound reinforcement, there was NO apparent separation from the screen channels.

There are reasons why there are so many types of speakers available...you MUST match the speaker's design to its intended use or you will suffer the consequences.

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Marin Zorica
Jedi Master Film Handler

Posts: 671
From: Biograd na Moru, Croatia
Registered: May 2003


 - posted 01-04-2011 05:43 PM      Profile for Marin Zorica   Email Marin Zorica   Send New Private Message       Edit/Delete Post 
Not only they have wide horizontal coverage and low vertical (so you can point diferent are with array of them) in cinema as is stated you need to have sound comming from one place, so in that case you have big horns to achieve high pressure and coverage with single driver. Even array could be used with careful aligment, you still have problem that you can't aim that good and put em near screen. But, closes thing to array in cinema is JBL screen array which consist of number of mid driver which are made in that way so that drivers don't cancel each other. On other side, if array is not aimed or controlled in good manner you can have canceling or bad phase rasponse in some places at some frequencies.

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003


 - posted 01-04-2011 07:07 PM      Profile for Sam D. Chavez   Author's Homepage     Send New Private Message       Edit/Delete Post 
There are a few line arrays out there in high end large houses.

They are very pricey of course and setting the vertical pattern is an issue.

Overkill for all but the largest of venues.

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 01-04-2011 09:53 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
I have an opinion...

Line Arrays are a bit overused in general. They have their place but rarely in cinema. I firmly feel that the suspension of disbelief depends on point sources coming from behind the screen and Line Arrays don't to that well.

I also believe that the sound should be reflective of the seated position. That is, if you sit in the rear of the theatre off to the far corner...then not only will your picture be smaller (perception) and skewed...so should the sound be to match that. It shouldn't sound too big...and I've heard that.

The only time I could see using a Line Array in a cinema is if the venue is SO big that one has to admit they are going to fail at presenting the sound in any semblance of proper anyway and is thus playing a came of compromises.

-Steve

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Marin Zorica
Jedi Master Film Handler

Posts: 671
From: Biograd na Moru, Croatia
Registered: May 2003


 - posted 01-05-2011 05:05 PM      Profile for Marin Zorica   Email Marin Zorica   Send New Private Message       Edit/Delete Post 
Steve did mentione good point, I did discuss that with some people, well....some people like to sit in middle of room, some on back, some on front.....we don't talk on issue when room is full of crowd and there is no place to sit, but people just "like" some seats in cinema, and as I notticed, most of people that sit from back don't like loud sound, as I did get from talk with some of my friends.

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Eric Robinson
Jedi Master Film Handler

Posts: 538
From: Santa Rosa, CA
Registered: Jan 2005


 - posted 01-05-2011 11:42 PM      Profile for Eric Robinson   Email Eric Robinson   Send New Private Message       Edit/Delete Post 
Just out of curiosity...are there any studios in the Northern California area which mix / produce movie soundtracks?

It would be interesting to see one of these studios first hand.

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003


 - posted 01-06-2011 12:41 AM      Profile for Sam D. Chavez   Author's Homepage     Send New Private Message       Edit/Delete Post 
Lucasfilm Skywalker ranch does a number of mixes for Pixar and many other clients.

Good luck getting an invite.

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Ron Lacheur
Jedi Master Film Handler

Posts: 650
From: British Columbia, Canada
Registered: Feb 2002


 - posted 01-06-2011 01:01 AM      Profile for Ron Lacheur   Email Ron Lacheur   Send New Private Message       Edit/Delete Post 
quote: Sam D. Chavez
Good luck getting an invite.
Not surprising, but too bad. Apparently the Stag Theater has an amazing TAD 3-Way System.

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Eric Robinson
Jedi Master Film Handler

Posts: 538
From: Santa Rosa, CA
Registered: Jan 2005


 - posted 01-06-2011 02:15 PM      Profile for Eric Robinson   Email Eric Robinson   Send New Private Message       Edit/Delete Post 
quote: Sam D. Chavez
Good luck getting an invite.
Sam, I'll buy you breakfast, lunch, and dinner if you could get us in there for a tour.

Food offer subject to change without prior notice.

But seriously, I'm sure I would learn a great deal from it.

Thanks for all the opinions / facts from everyone. [Razz]

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