HOME THEATER DESIGN

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HOME THEATER DESIGN

• CARL FOUTZ
• CEU 970382

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SPEAKER PLACEMENT

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FRONT SPEAKERS

• HEAD HEIGHT SEATED APPROXIMATELY 40 INCHES
• FROM CENTER OF MAIN SEATING AREA 45 ANGLE FOR
  SPEAKER SEPERATION

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TYPES OF SPEAKERS

• BOOKSHELF
• TOWER
• ON WALL
• IN WALL
• CEILING (DISPERSED)

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CENTER SPEAKER

• MOUNTED DIRECTLY
• ABOVE OR BELOW THE TV, OR BEHIND THE SCREEN

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TYPES OF SPEAKERS

• CENTER SPEAKER SHOULD MATCH FRONT LEFT AND
  RIGHT SPEAKERS
• WHEN SPEAKER IS USED NEAR TV IT MUST BE SHIELDED
• CABINET, INWALL, ONWALL OR DISPERSED CEILING
  

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REAR SPEAKERS

• ON SIDE WALLS DIRECTLY BEHIND THE MAIN SEATING
• AREA ABOUT 3 FEET HIGHER THAN FRONT SPEAKERS

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TYPES OF SPEAKERS

• BOOKSHELF
• ONWALL
• INWALL
• CEILING
• DIPOLE (BEST FOR REAR EFFECTS

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SUBWOOFER

• REPRODUCE LOW BASS EFFECTS
• HEIGHTEN INVOLVEMENT WITH THE ACTION ON THE
  SCREEN
• CORNER PLACEMENT TO FULLY UTILIZE SUBWOOFER
  CAPABILITY

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5.1 SURROUND SOUND

• DOLBY DIGITAL (AC3) DOLBY LABORATORIES
• DTS DIGITAL THEATER SYSTEMS

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5.1 SOURCES

• DVD
• LASER DISC
• SATELITE
• CABLE (SOME AREAS)
• PASSING A 5.1 SIGNAL MUST BE DONE ON FIBER
  OPTIC OR COAX CABLE

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EXTENDED SURROUND

• DOLBY DIGITAL
• REFERRED TO AS EX 7.1
• DTS
• REFERRED TO AS ES 6.1
  

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EX SPEAKER PLACEMENT
2 SPEAKERS
REAR WALL
SAME HEIGHTH AS SIDES
SEPARATED BY 4 FEET
1 SPEAKER
REAR WALL
SAME HEIGHTH AS SIDES
CENTER OF LISTENING AREA
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EX SPEAKER PLACEMENT


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VIDEO SCREENS

• When seated too close, the scanning lines on the
  tube or the pixels on the projectors will be
  apparent.
• Seating far enough back will blend these details
  to the human eye.

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VIDEO SCREENS

• Movie theaters are designed so that viewing
  angles are reduced to provide more realistic
  images. Prime seating is designed to view the
  movie at a 30 degree angle (peripheral view of
  the human being).
• When adopting this design to the home theater
  visual scanning lines and pixels are detected.

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VIDEO SCREENS
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SEATING RANGE DILEMMA

• Seating distance to overcome visual image
  structure is typically 4X the height of the video
  screen.
• Or this distance can be also measured as 3X the
  width of the screen.
• These two parameters are commonly recommended
  distances by projection screen manufacturers.

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DVD

• Innovative creation of digital and audio and
  video.
• Can play up to 133 minutes of full motion video
  on a single sided disc (92 of all movies ever
  made).

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DVD

• Picture quality approaches D-1 studio
  production standard.
• Over 500 lines horizontal resolution (240 lines
  VCR).
• Up to 8 languages and 32 subtitles.

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DVD

• Choice of PCM stereo sound or digital multi
  channel surround.
• Supports letterbox, pan and scan or 16 X 9
  formats.
• Holds 4.7 gigabytes of data per layer (compared
  to 680 megabytes of data on a CD).
• Offers dual layer double sided disc options.

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DVD FUTURE APLLICATIONS

• The ability to view scenes shot at multiple
  angles.
• Recordable, rewritable and high definition media.

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PROGRESSIVE SCAN DVD

• PLAYERS WITH PROGRESSIVE SCAN WILL OFFER OUTPUTS
  FOR HDTV READY DISPLAY MONITORS. THE PLAYER WILL
  THEN BE CAPABLE OF RECONSTRUCTING 3/2 PULLDOWN
  EFFECT INTRODUCED WHEN THE FILM-BASED PROGRAMS
  ARE TRANSFERRED TO VIDEO. RESULTS IN THE BEST
  PICTURE QUALITY AVAILABLE!

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HOOKING UP
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COMPOSITE VIDEO CIRCA 1950 DESIGNED VIDEO
CABLE POOR BANDWIDTH POOR COLOR SEPERATION
SATELITE CABLE ANTENNA
DVD VCR
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S VIDEO CIRCA 1980 BROADER BANDWIDTH GOOD COLOR
SEPERATION DESIGNED FOR COLOR TV
SATELITE CABLE ANTENNA
DVD VCR
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COMPONENT VIDEO REQUIRED FOR HDTV
SATELITE CABLE ANTENNA
DVD VCR
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ANALOG AUDIO STEREO
SATELITE CABLE ANTENNA
DVD VCR
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DIGITAL AUDIO MUST USE FOR DTS AND DOLBY
DIGITAL FIBER OPTIC TOSLINK
CONNECTOR COAXIAL RCA CONNECTOR
SATELITE CABLE ANTENNA
DVD VCR
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HDMI HDTV VIDEO DIGITAL AUDIO
SATELITE CABLE ANTENNA
DVD VCR
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RELATIONSHIP BETWEEN AMP POWER SOUND PRESSURE

• 2 WATTS 3DB
• 4 WATTS 6DB
• 10WATTS 10DB (TWICE AS LOUD AS 1 WATT)
• 20WATTS 13DB
• 40WATTS 16DB
• 100WATTS 20DB (FOUR TIMES AS LOUD AS 1 WATT)
• 200WATTS 23DB
• 400WATTS 26DB
• 1000WATTS30DB (EIGHT TIMES AS LOUD AS 1 WATT)