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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
http://www.lvhsystems.com/index.htm
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. 
Design 
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. 
[edit] 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. 
[edit] 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.[1]
[2] 
[edit] History 
[edit] 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. 
[edit] 1980s 
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 
business. 
[edit] 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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