Dolby Laboratories Atmos Installation Manuallines
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Dolby Laboratories Atmos Installation Manuallines

Dolby Laboratories Atmos Installation Manuallines

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Dolby Atmos
Home Theater

Installation Guidelines

September 2014

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Summary of Contents for Dolby Laboratories Atmos

  • Page 1: Installation Guidelines

    ® Dolby Atmos Home Theater Installation Guidelines September 2014...

  • Page 2: Table Of Contents

     Combination: Overhead and Dolby Atmos Enabled Speakers  Use of Existing Overhead Speakers 3. Standard Speaker Configurations  Dolby Conventions for Speaker Configurations  Standard Setup for Both Overhead Speakers and Dolby Atmos Enabled Speakers 4. Additional Speaker Placement Guidelines  Listener-Level Speaker Placement Guidelines ...

  • Page 3: Background On Dolby Atmos

    Atmos system with as many as 24 speakers on the floor and 10 overhead speakers. Figure 1: At left is a Dolby Atmos system with five speakers on the floor and two overhead speakers; at right is a Dolby Atmos system with up to 24 speakers on the floor and 10 overhead speakers.
  • Page 4 These installation guidelines are intended to be a resource for integrating Dolby Atmos into a home theater system and unlocking the potential of this revolutionary audio format. Details include use of conventional overhead speakers and Dolby Atmos enabled speaker technology, which enables you to architect a system capable of reproducing overhead sound, even if you’re not able to put speakers in or on a...

  • Page 5: General Dolby Atmos Home Setup Guidelines

    Decoding and rendering of Dolby Atmos content is managed entirely by the AVR. To properly pass the Dolby Atmos audio to the AVR, source devices must be connected to the AVR via HDMI 1.4 or later and set to audio bitstream out. For Blu-ray players, the secondary audio mixing option must be disabled.
  • Page 6 Most AVRs that s support Dol by Atmos h ave speake r connection ns labeled H HEIGHT, as show wn in Figure 2. Some AV VRs do not u use the HEIG GHT label fo or all capab...

  • Page 7: Overhead Speakers

    1.25 times the height of the front speakers. Overhead Speakers Overhead sound is a vital part of the Dolby Atmos experience. There are a variety of options for adding this capability to a room. One solution is to install speakers overhead. Most high-power, full-frequency conventional overhead speakers with wide dispersion characteristics will work in a Dolby Atmos home theater.

  • Page 8: Alternatives To Overhead Speakers

    The performance of Dolby Atmos enabled speakers must be experienced to be believed.
  • Page 9 Integ grated speak kers You w will be able to select int tegrated Do olby Atmos e enabled spe eakers that i include both tradit tional forwa ard-firing sp eakers and upward-firin ng speakers s in a single e speaker cabin net.
  • Page 10 Figure 4: Dolby Atmos enabled add-on modules include only upward-firing speakers. You can place them on top of your traditional front-firing speakers or on another surface near them. Comparison to overhead speakers Dolby Atmos enabled speakers produce slightly more diffuse overhead audio that is quite lifelike and, in some cases, may be preferable to the sound that originates from overhead speakers.
  • Page 11 Dolby Atmos playback system (listener level, overhead, Dolby Atmos enabled) must be added in pairs. Dolby Atmos speakers should be located in the front left and right and left rear surround and right rear surround locations in a 7.1.4 playback system.

  • Page 12: Use Of Existing Speakers

    If existing overhead speakers are in the front of the room, then Dolby Atmos enabled speakers may be used in the rear of the room and vice versa.

  • Page 13: Use Of Existing Overhead Speakers

    In some existing home theater systems, overhead speakers are employed to generate audio that would otherwise be created by listener-level speakers (for example, left/right surround speakers). When transitioning to Dolby Atmos, existing overhead speakers should only be repurposed as overhead outputs if a corresponding listener-level speaker can be added to assume the previous overhead speaker feed.

  • Page 14: Standard Speaker Configurations

    3. Standard Speaker Configurations Dolby Conventions for Speaker Configurations With the debut of Dolby Atmos, there is a new method of referring to surround sound speaker configurations (see the “Dolby Atmos for the Home Theater” white paper for more details). It is based on the standard nomenclature (stereo, 5.1, and 7.1) but adds a number at the end to specify the number of height speakers you employ in the playback system (for example, 7.1.4).
  • Page 15 Figure 7: A traditional 5.1 speaker layout with two Dolby Atmos enabled speakers (5.1.2). Standard Setups for Both Overhead Speakers and Dolby Atmos Enabled Speakers Images of standard setups follow for the most common speaker configurations and are provided for both overhead speakers and Dolby Atmos enabled speakers: 5.1.2 (Fig.
  • Page 16 Figure 8: Standard 5.1.2 setup with overhead speakers.
  • Page 17 Figure 9: Standard 5.1.2 setup with Dolby Atmos enabled speakers.
  • Page 18 Figure 10: Standard 5.1.4 setup with overhead speakers.
  • Page 19 Figure 11: Standard 5.1.4 setup with Dolby Atmos enabled speakers.
  • Page 20 Figure 12: Standard 7.1.2 setup with overhead speakers.
  • Page 21 Figure 13: Standard 7.1.2 setup with Dolby Atmos enabled speakers.
  • Page 22 Figure 14: Standard 7.1.4 setup with overhead speakers.
  • Page 23 Figure 15: Standard 7.1.4 setup with Dolby Atmos enabled speakers.
  • Page 24 Figure 16: Standard 9.1.2 setup with overhead speakers.
  • Page 25 Figure 17: Standard 9.1.2 setup with Dolby Atmos enabled speakers.

  • Page 26: Additional Speaker Placement Guidelines

    4. Additional Speaker Placement Guidelines In addition to the typical configurations in the previous section, Dolby Atmos can support a variety of additional speaker positions, up to a maximum of 34 total (for example, 24.1.10). This section focuses on the placement of speakers, which may be added to the positions covered in section 3.
  • Page 27 Left Center/Right Center speaker pair The Left Center and Right Center speakers should ideally be placed at approximately 15 degrees between the Left and Right speakers and the center-front reference. If the Left Screen and Right Screen speakers are included in the speaker layout, we recommend distances between the Left and Right, Left Center and Right Center, Left Screen and Right Screen, and Center speakers be subdivided and that the Left Center and Right Center speakers be placed at approximately 30 degrees from the...
  • Page 28 Figure 19 shows the range of angles at which the Left Screen and Right Screen speakers may be placed. 5° 5° 15° 15°   Figure 19: Left Screen and Right Screen speaker placement. Left Surround 1/Right Surround 1 speaker pair The Left Surround 1 and Right Surround 1 speakers should be placed between the Left Surround and Right Surround and Left Wide and Right Wide speakers at approximately 75 degrees from the center-front reference.
  • Page 29 Left Surround 2/Right Surround 2 speaker pair The Left Surround 2 and Right Surround 2 speakers should be placed between the Left Surround and Right Surround and Left Rear Surround 1 and Right Rear Surround 1 speakers at approximately 105 degrees from the center-front reference. Figure 21 shows the range of angles at which the Left Surround 2 and Right Surround 2 speakers may be placed.
  • Page 30 105° 105° 120° 120° 135° 135° Lrs1 Rrs1   Figure 22: Left Rear Surround 1 and Right Rear Surround 1 speaker placement. Left Rear Surround 2/Right Rear Surround 2 speaker pair The Left Rear Surround 2 and Right Rear Surround 2 speakers should be placed between the Left Rear Surround and Right Rear Surround and Left Center Surround and Right Center Surround speakers at approximately 145 degrees from the center- front reference.

  • Page 31: Overhead/Height Speaker Placement Guidelines

    Left Center Surround/Right Center Surround speaker pair The Left Center Surround and Right Center Surround speakers should be placed between the Left Rear Surround, Right Rear Surround, and Center Surround speakers at approximately 165 degrees from the center-front reference. Figure 24 shows the range of angles at which the Left Center Surround and Right Center Surround speakers may be placed.
  • Page 32 Z series speakers not be placed inside the left and right main speakers (for example, closer to the Center speaker). The Left Front Height and Right Front Height speakers are typically included in Dolby Pro Logic IIz products.
  • Page 33 30° 30° Listener   Figure 26: Top view of Left Front Height and Right Front Height speaker placement. Left Rear Height/Right Rear Height speaker pair We recommend that the Left Rear Height and Right Rear Height speakers should be mounted on the rear wall (instead of on the ceiling) in line with an approximately 30 degrees horizontal from the center-front reference.
  • Page 34 op View of Lrh/Rrh Speaker Placement Figure 30° 30° Listener   Figure 28: Top view of Left Rear Height and Right Rear Height speaker placement.

  • Page 35: Dolby Surround Upmixer

    5. Dolby Surround Upmixer Clients that invest in a Dolby Atmos home theater naturally expect to get full use of all of their components, even when the content they are playing isn’t mixed in Dolby Atmos. This includes taking advantage of overhead and Dolby Atmos enabled speakers to further enhance the playback experience.

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