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This topic comprises 2 pages: 1 2
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Author
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Topic: Grand Theft - Speaker
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Rick Long
Jedi Master Film Handler
Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999
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posted 09-14-2002 03:56 PM
Actually this theatre does have an alarm system, using motion detection in the lobby area, turned on during off-hours.This auditorium, like most, has an exit door which leads to a common (for all auditoriums on that side of the building) hallway, which leads to an outside exit door. It is even possible that these speakers were removed, one or two at a time, over a period of weeks, during operating hours. On a matinee when attendance was poor, the theif could wait until the credits start to roll. As the last of the customers leave the auditorium, the theif could then slip behind the skirt at the bottom of the screen and up the ladder. As the ushers would not be very long in cleaning up the auditorim, they would have several minutes before a new audience began filing in. Exiting by the rear exit, they would not be seen by the staff, with a speaker obtained for the price of an admission ticket. Manny, interesting thought about "Need for the stolen property".
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John Walsh
Film God
Posts: 2490
From: Connecticut, USA, Earth, Milky Way
Registered: Oct 1999
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posted 09-15-2002 09:52 AM
The problem with an alarm is the wire can be cut. Even if it's a "loop", theifs will quickly discover to short the wires first. After all, if they are stealing a speaker, they probably know something about electricity. A multi-conductor cable could be used to try to fool' em, I guess. The wire could be run in greenfield/EMT, but someone could uncouple the connections. It also starts to get expensive. If the alarm was powered with batteries, they would run down after a while.I can't see an easy solution to this, but for an existing theater I think the best cost vs. gain is security screws. For a new theater, placing all speakers up on platforms without access. I realize the output of subwoofers are reduced when placed up higher, but it's better than no output. I think the big problem is a person usually can't be seen back there, (especally if there's a THX-like baffle wall) and they can take their time to defeat almost anything. They can work even while the theater is open, when building alarms are not on. It's also tough to get money to prevent this. For some reason, accountants would rather spend $300, three-four times a year replacing speakers than spend $1200 once to solve the problem.
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Rick Long
Jedi Master Film Handler
Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999
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posted 09-17-2002 12:02 AM
Thinking into this a little further, the ladder might not be a bad idea after all. No, I am not thinking of wiring it up to an ignitor (although the temptation is there but small kids, bored with the movie, might wander into this area), but to simply isolate it from ground and, using a touch-sensitive system, have an alarm ring in the manager's office or at the guest services desk, indicating that someone was behind the screen. Who knows? we might catch the son/daughter of a bitch after all. After all, the speaker closest to the ladder would be the first one to get stolen, as was the case here.
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