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Jun 11th, 2008 15:11
emil cohen, http://www.lvhsystems.com/index.htm
LVLVH systems offers custom installation of increasingly popular home
entertainment systems. sound surround systems Plasma Lcd Tv
installation Whether you want a 50" Plasma or LCD mounted to the wall
or a dedicated home theater. LVH systems has the tools and knowledge
to help you achieve your dreams.
LVH systems is a direct supplier of many leading component lines, and
can also assist with the installation of customer-supplied equipment
Home automation (also called domotics) is a field within building
automation, specializing in the specific automation requirements of
private homes and in the application of automation techniques for the
comfort and security of its residents. Although many techniques used
in building automation (such as light and climate control, control of
doors and window shutters, security and surveillance systems, etc.)
are also used in home automation, additional functions in home
automation can include the control of multi-media home entertainment
systems, automatic plant watering and pet feeding, automatic scenes
for dinners and parties, and a more user-friendly control interface.
When home automation is installed during construction of a new home,
usually control wires are added before the interior walls are
installed. These control wires run to a controller, which will then
control the environment.
Specific domotic standards include INSTEON, X10, PLC BUS, KNX
(standard), System Box, LonWorks, C-Bus, Universal powerline bus
(UPB), UPnP, ZigBee and Z-Wave that will allow for control of most
applications. Some standards use communication and control wiring,
some embed signals in the powerline, some use radio frequency (RF)
signals, and some use a combination of several methods. Control wiring
is hardest to retrofit into an existing house. Some appliances include
USB that is used to control it and connect it to a domotics network.
Bridges translate information from one standard to another (eg. from
X10 to European Installation Bus).
Home cinema, also called home theater, are entertainment systems that
seek to reproduce cinema quality video and audio in a private home. In
the 1950s, home movies became popular in the United States with Kodak
8 mm film projector equipment became affordable. The development of
multi-channel audio systems and laserdisc in the 1980s created a new
paradigm for home cinema. In the early to mid 1990's, a typical home
cinema would have a Laserdisc or S-VHS videocassette player fed to a
large rear projection television. In the late 1990s, home theather
technology progressed with the development of DVD, Dolby Digital 5.1-
channel audio ("surround sound"), and High-Definition Television.
In the 2000s, the term "home cinema" encompasses a range of systems.
The most basic system could be a $50 DVD player, a standard CRT
television($200), and a $100 "home theater in a box", a 2.1 speaker
system with left and right speakers and a small 8" subwoofer cabinet.
An expensive home cinema set-up might include a High-Definition DVD
format such as Blu-ray, a 60" High-Definition Television with
a "cinema-style" 16 X 9 format, a several thousand-watt home theatre
receiver with five to seven surround sound speakers, and a powered
subwoofer with a 12" subwoofer. The most expensive home theater set-
ups, which can cost over $100,000 US, have digital projectors,
expensive screens, and custom-built screening rooms which include
cinema-style chairs and audiophile-grade sound equipment.
Today, "home cinema" implies a real "cinema experience" and therefore
a higher quality set of components than the average television
provides. A typical home theater includes the following parts:
Input Devices: One or more audio/video sources. High quality formats
such as HDTV or Blu-ray are preferred, though they often include a VHS
player or Video Game Systems. Some home theatres now include a home
theater PC to act as a library for video and music content.
Processing Devices: Input devices are processed by either a standalone
AV receiver or a Preamplifier and Sound Processor for complex surround
sound formats. The user selects the input at this point before it is
forwarded to the output.
Audio Output: Systems consist of at least 2 speakers, but can have up
to 10 with additional subwoofer.
Video Output: A large HDTV display. Options include Liquid crystal
display television (LCD), video projector, plasma TV, rear-projection
TV, or a traditional CRT TV.
Atmosphere: Comfortable seating and organization to improve the cinema
feel. Higher-end home theaters commonly also have sound insulation to
prevent noise from escaping the room, and a specialized wall treatment
to balance the sound within the room.
Component systems vs. Theater-in-a-Box
High-quality home cinemas are assembled from component pieces
purchased separately to provide the best combination of equipment for
the cost. It is possible to purchase home theater in a box kits that
include a set of speakers for surround sound, an amplifier/tuner for
adjusting volume and selecting video sources, and sometimes a DVD
player. Though these kits often pale in comparison to a custom-built
home cinema, they are inexpensive and easy to set up; one needs only
to add a television and some movies in order to create a simple home
theater. This makes them popular in the public's eyes.
Dedicated home theaters
A home theater with video projector mounted in a box on the ceiling.
Built-in shelves provide a place for movie decor, DVDs, and equipment.
Note the component stack on the right, where the audio receiver, DVD
player, secondary monitor, and video game system are located.
The same projection screen as at top, without image.Some home cinema
enthusiasts go so far as to build a dedicated room in the home for the
theater. These more advanced installations often include sophisticated
acoustic design elements, including "room-in-a-room" construction that
isolates sound and provides the potential for a nearly ideal listening
environment. These installations are often designated as "screening
rooms" to differentiate from simpler installations.
This idea can go as far as completely recreating an actual cinema,
with a projector enclosed in a projection booth, specialized
furniture, a piano or theatre organ, curtains in front of the
projection screen, movie posters, or a popcorn or snack machine. More
commonly, real dedicated home theaters pursue this to a lesser degree.
Presently the days of the $100,000 and over home theater is being
usurped by the rapid advances in digital audio and video technologies,
which has spurred a rapid drop in prices. This in turn has brought the
true digital home theater experience to the doorsteps of the do-it-
yourself people, often for less than what you would expect to pay for
a low budget economy car. Current consumer level A/V equipment can
meet and often exceed in performance what you would expect to
experience at a modern commercial theater.
 Home Theater Seating
Home theater seating consists of chairs specifically engineered and
designed for viewing movies in a personal home theater setting. Most
home theater seats have cup holder built into the chairs' armrests and
a shared armrest between each seat. Some seating is movie theater-
style chairs like those seen in a movie cinema, which features a flip
up seat cushion. Other seating systems have plush leather reclining
lounger types, with flip-out footrests. Additional features like
storage compartments, snack trays, tactile transducers
(nicknamed "Bass Shakers"), or even electric motors to recline the
chair are available, depending on the model.
 Backyard theater
In places that have the proper outdoor atmosphere, it is possible for
people to set up a home theater in their backyard. Depending on the
space available, it may simply be a temporary version with foldable
screen, a projector and couple of speakers, or a permanent fixture
with huge screens and dedicated audio set up poolside. Due to the
outdoor nature, it is quite popular with BBQ parties and pool parties.
Some people have built upon the idea, and constructed mobile drive-in
theaters that can play movies in public open spaces. Usually, these
require a powerful projector, a laptop or DVD player, outdoor speakers
and/or an FM transmitter to broadcast the audio to other car radios.
 1950s and 1960s
In the 1950s, home movies became popular in the United States and
elsewhere as Kodak 8 mm film (Pathé 9.5 mm in France) and camera and
projector equipment became affordable. Projected with a small,
portable movie projector onto a portable screen, often without sound,
this system became the first practical home theater. They were
generally used to show home movies of family travels and celebrations
but also doubled as a means of showing private stag films. Dedicated
home cinemas were called screening rooms at the time and were
outfitted with 16 mm or even 35 mm projectors for showing commercial
films. These were found almost exclusively in the homes of the very
wealthy, especially those in the movie industry.
Portable home cinemas improved over time with color film, Kodak Super
8 mm film film cartridges, and monaural sound but remained awkward and
somewhat expensive. The rise of home video in the late 1970s almost
completely killed the consumer market for 8 mm film cameras and
projectors, as VCRs connected to ordinary televisions provided a
simpler and more flexible substitute.
The development of multi-channel audio systems and laserdisc in the
1980s added new dimensions for home cinema. The first known home
cinema system was installed as a sales tool at Kirshmans furniture
store in Metairie, Louisiana in 1974. They built a special sound room
which incorporated the earliest quadraphonic audio systems and
modified Sony trinitron televisions for projecting the image. Many
systems were sold in the New Orleans area in the ensuing years before
the first public demonstration of this integration occurred in 1982 at
the Summer Consumer Electronics Show in Chicago, Illinois. Peter
Tribeman of NAD (USA) organized and presented a demonstration made
possible by the collaborative effort of NAD, Proton, ADS, Lucasfilm
and Dolby Labs who contributed their technologies to demonstrate what
a home cinema would "look and sound" like.
Over the course of three days, retailers, manufacturers, and members
of the consumer electronics press were exposed to the first "home
like" experience of combining a high quality video source with multi-
channel surround sound. That one demonstration is credited with being
the impetus for developing what is now a multi-billion dollar
 1990s and 2000s
In the early to mid 90's, a typical Home Cinema would have a Laserdisc
or S-VHS player fed to a large screen: rear projection for the more
affordable setups, and LCD or CRT front projection in the more
elaborate. In the late 1990s, the development of DVD, 5.1-channel
audio, and high-quality video projectors that provide a cinema
experience at a price that rivals a big-screen HDTVs sparked a new
wave of home cinema interest. In the 2000s, developments such as High
Defnition video and newer HD display technologies enable people to
enjoy a cinematic feeling in their own home at an affordable price.
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