Dolby Laboratories DSR1260 User manual

Dolby DSR1260/DSR1280
Owner's Manual
1 January 2022
8800294 Issue 1

Notices
Copyright
© 2022 Dolby Laboratories. All rights reserved.
Dolby Laboratories, Inc.
1275 Market Street
San Francisco, CA 94103-1410 USA
Telephone [phone]
Fax [phone]
http://www.dolby.com
Trademarks
Dolby and the double-D symbol are registered trademarks of Dolby Laboratories, Inc.
The following are trademarks of Dolby Laboratories:
Dialogue Intelligence™
Dolby®
Dolby Advanced Audio™
Dolby Atmos®
Dolby Audio™
Dolby Cinema®
Dolby Digital Plus™
Dolby Digital Plus Advanced Audio™
Dolby Digital Plus Home Theater™
Dolby Home Theater®
Dolby Theatre®
Dolby Vision®
Dolby Vision IQ™
Dolby Voice®
Feel Every Dimension™
Feel Every Dimension in Dolby™
Feel Every Dimension in Dolby Atmos™
MLP Lossless™
Pro Logic®
Surround EX™
All other trademarks remain the property of their respective owners.
Product model
This documentation applies to: Dolby DSR1260 & Dolby DSR1280 (Model: CID1031).
Limited warranty and warranty exclusions
THE LIMITED WARRANTY AND WARRANTY EXCLUSIONS MAY BE FOUND AT THE FOLLOWING URL: http://
www.dolby.com/us/en/about/warranty-and-maintenance-policies.html
Notices
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Contents
1 Important safety and regulatory information............................................................................................4
2 Introduction to the Dolby speaker DSR1260/DSR1280..............................................................................7
2.1 About this documentation....................................................................................................................9
2.2 Dolby DSR1260/DSR1280 key features and benefits........................................................................... 9
2.3 Dolby DSR1260/DSR1280 design simulations......................................................................................9
2.4 General room placement...................................................................................................................... 11
2.5 General information about the Dolby DSR1260/DSR1280.................................................................. 11
2.5.1 Placement of the Dolby DSR1260/DSR1280 on a wall or ceiling................................................... 11
2.5.2 Determining proper horizontal aiming for the side and rear surround loudspeakers.................11
2.5.3 Side and rear surround vertical aiming.......................................................................................... 12
2.5.4 Top surround position.....................................................................................................................13
2.6 Selecting brackets and yokes................................................................................................................14
2.7 Dolby DSR1260/DSR1280 wire selection.............................................................................................. 14
2.8 Contacting Dolby .................................................................................................................................. 14
3 Assembling, installing, and aiming the Dolby DSR1260/DSR1280............................................................16
3.1 Horn rotation on the Dolby DSR1260/DSR1280................................................................................... 17
3.1.1 Rotating the horn on the Dolby DSR1260/DSR1280.......................................................................18
3.2 Installing brackets .................................................................................................................................20
3.3 Installing a yoke.....................................................................................................................................21
3.4 Aiming the Dolby DSR1260/DSR1280 using a laser..............................................................................22
3.4.1 Using a laser for horizontal aiming.................................................................................................22
3.4.2 Using a laser for vertical aiming......................................................................................................23
3.5 Installing the safety cable..................................................................................................................... 23
3.6 Connecting the Dolby DSR1260/DSR1280............................................................................................25
4 Dolby DSR1260/DSR1280 specifications.................................................................................................... 27
4.1 Dolby DSR1260 specifications...............................................................................................................28
4.2 Dolby DSR1280 specifications...............................................................................................................29
4.3 Dolby DSR1260/DSR1280 dimensions..................................................................................................31
5 Dolby DSR1260/DSR1280 signal processing...............................................................................................33
5.1 Dolby DSR1260 signal processing.........................................................................................................34
5.2 Dolby DSR1280 signal processing.........................................................................................................34
6 System limiters............................................................................................................................................ 36
6.1 Setting system limiters..........................................................................................................................37
7 Documentation revision history................................................................................................................. 38
Contents
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1
Important safety and regulatory information
Safety
INSTALLER ASSUMES ALL RESPONSIBILITY AND LIABILITY FOR THE INSTALLATION OF THIS PRODUCT.
No information contained in this guide is intended as a warranty on the part of Dolby. Anyone using
this information assumes all liability arising from its use. Product abuse, use of the product not in
accordance with Dolby instructions, or use in an application for which the product has not been
designed is not covered under any Dolby warranty, nor is Dolby liable for any loss or damage.
Installation must be performed by qualified, licensed, and insured installers, and installed in
accordance with all laws, rules, and regulations applicable to the installation site. Failure to do so
could result in serious personal injury or even death. Prior to installing this product, read and
completely understand the installation instructions. You must read these instructions to prevent
personal injury and property damage. Keep the installation instructions in an easily accessible location
for future reference.
A licensed professional engineer must approve the placement and method of attachment to the
building structure prior to the installation of the system.
All information presented herein is based upon materials and practices common to North America and
may not directly apply to other countries because of diering material dimensions, specifications,
and/or local regulations. Installers in other countries should consult with appropriate engineering and
regulatory authorities for specific guidelines.
Any supplied rigging hardware is intended only for use with the specified loudspeaker(s). The installer
assumes all risk of loss and/or injury arising out of the use of the supplied rigging hardware with any
other loudspeaker. All other rigging is considered part of the venue and/or installer-supplied
equipment and is not addressed in this guide. This guide is not a comprehensive source for rigging in
general. Installer assumes all responsibility for ensuring that accepted rigging and safety practices are
employed. Installer assumes all responsibility for the appropriate use of Dolby supplied rigging
hardware and follows at a minimum all applicable laws, rules, and regulations in force for each venue.
Make sure that no water pipes, natural gas lines, electrical wire, or conduit are present where the
speaker is to be installed. Cutting or drilling into water pipes, natural gas lines, electrical wire, or
conduit could cause serious personal injury or property damage.
Dolby is not responsible for the application of its products for any purpose or the misuse of this
information for any purpose. Furthermore, Dolby is not responsible for the abuse of its products
caused by avoiding compliance with inspection and maintenance procedures or any other abuse.
Proper selection of mounting hardware is not included; proper assembly and installation of mounting
hardware, including, but not limited to, selection of appropriate weight-bearing support and bracket
use, are the exclusive responsibility of the installer. Dolby disclaims any liability, including damage or
injury, for the use of mounting hardware supplied by any party other than Dolby. Any modification to
Important safety and regulatory information
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the speaker system hardware provided by Dolby (for example, mounting by drilling holes into the
speaker system) will render the product warranty null and void.
Caution: Use proper liing techniques when working with heavy objects to avoid
personal injury.
No open flame sources should be placed on or near the apparatus. Do not install near any heat sources
such as radiators, heat registers, stoves, or other equipment that produces heat.
Storage temperature: -4 to +140°F (-20 to +60°C). The products covered by this manual are not intended
for use in high-moisture environments. Moisture can damage the product and cause corrosion of
electrical contacts and metal parts. Avoid exposing the speakers to direct moisture. Keep speakers out
of extended or intense direct sunlight. Premature product failure or serious personal injury could occur
if this product is used outdoors or in wet indoor environments.
High temperature warning: Loudspeaker system may reach elevated temperatures
during operation. Always remove all drive signals and allow ample time for the system to
cool down prior to handling.
Hearing damage can occur by prolonged exposure to excessive sound pressure level (SPL); the
loudspeaker is easily capable of generating SPL suicient to cause permanent hearing damage to
performers, production crew, or audience members. Caution should be taken to avoid prolonged
exposure to SPL in excess of 90 dB.
This product is intended for indoor use only.
Clean the metal frame and chassis only with a dry cloth.
Do not block any ventilation openings. Install in accordance with the instructions as detailed in this
manual and the Product Information document.
Do not install near any heat sources, such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
When a rolling cart is used, use caution when moving the cart/apparatus combination to avoid injury.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way.
This product may require installation in a restricted access location. Please refer to this manual and to
the Product Information document.
Warning:
To reduce electric shock, do not expose the apparatus to dripping or splashing; no objects filled with
liquids, such as mugs, shall be placed on the apparatus.
Caution:
Troubleshooting must be performed by a trained electrician. To reduce the risk of electric shock, do
not attempt to service this equipment unless you are qualified to do so.
Caution:
This symbol that appears on the unit and/or instruction manual is intended to alert the user to the
presence of important safety operating and maintenance instructions.
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Warning:
This symbol that appears on the unit and/or instruction manual is intended to alert the user to the
presence of uninsulated "dangerous" voltage within the product's enclosure that may be of suicient
magnitude to constitute a risk of electric shock to persons.
High temperature warning:
This symbol that appears on the unit and/or the instruction manual is intended to alert the user that
the item can be hot and that care must be taken accordingly.
EU Environmental regulations/ compliance and product disposal information
Restriction of Hazardous Substances Directive (RoHS): All Dolby products comply with the
requirements of the EU RoHS Directive. This product is electronic equipment and should be disposed
of in accordance with all applicable laws.
Do not dispose as household waste. Do not dispose of the product in a fire. Please dispose of this
product by taking it to your local electronic waste collection point or recycling center. For information
regarding where to recycle electronic equipment, contact your local dealer. For additional information
regarding Waste Electrical and Electronic Equipment (WEEE) and product disposal go to http:
dolby.com/us/en/about/environmental-commitment.html.
Russian environmental regulations and compliance
This product complies with Russia EAC RoHS requirements.
Important safety and regulatory information
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2
Introduction to the Dolby speaker DSR1260/
DSR1280
The Dolby DSR1260/DSR1280 speakers are high-performance cinema surround loudspeakers for use in
5.1 and Dolby Surround 7.1 cinema auditoriums, as well as medium to large-size Dolby Atmos
equipped auditoriums. They share the same asymmetrical waveguide technology as the rest of the
Dolby loudspeaker family, which provides superior audience coverage. The Dolby DSR1260/DSR1280
speakers provide two coverage pattern options, allowing optimized performance for wall or ceiling
surround applications. The Dolby DSR1260, typically used for wall installations, features a 60° vertical
dispersion pattern and an asymmetrical horizontal dispersion pattern of 60° at the top and 120° at the
bottom. The Dolby DSR1280, typically used for overhead installations, features an 80° vertical
dispersion pattern and an asymmetrical horizontal dispersion pattern of 80° at the top and 130° at the
bottom. Additionally, the high-frequency horns within the Dolby DSR1260/DSR1280 can be rotated,
providing the same great coverage regardless of loudspeaker orientation.
The Dolby DSR1260 and DSR1280 utilize a high-performance, high-output 12” low-frequency driver
and a 1” exit compression driver. Both transducers are FEM (finite element modeling) optimized and
utilize state-of-the-art materials, allowing them to deliver high sound pressure levels with minimal
distortion. These advanced drivers, coupled with Dolby industry-leading system design and support
philosophy, allow for exceptional performance, as well as quick, easy installation and service.
Figure 1: Dolby DSR1260/DSR1280 front (top)
The list below is an outline of this chapter:
•About this documentation
•Dolby DSR1260/DSR1280 key features and benefits
•Dolby DSR1260/DSR1280 design simulations
•General room placement
•General information about the Dolby DSR1260/DSR1280
•Selecting brackets and yokes
Introduction to the Dolby speaker DSR1260/DSR1280
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•Dolby DSR1260/DSR1280 wire selection
•Contacting Dolby
Introduction to the Dolby speaker DSR1260/DSR1280
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2.1 About this documentation
This documentation shows you key features and benefits of the Dolby DSR1260/DSR1280 speakers and how
to install the system in a typical cinematic exhibition environment.
2.2 Dolby DSR1260/DSR1280 key features and benefits
The Dolby DSR1260 and DSR1280 speakers each feature an asymmetrical high-frequency horn coupled with
a high-performance transducer. This configuration yields superior audience coverage, as well as amplitude
control between near and far listeners.
• The patented asymmetrical high-frequency horn design provides long-distance coverage from the top of
the horn, while the bottom of the horn provides wider coverage and volume shading for the audience
closer to the loudspeaker. This provides greatly improved coverage for the entire auditorium in
comparison to conventional horn designs.
• The advanced input plate features a high-current, spring-loaded terminal block that enables quick
installation without the need for spade lugs or a crimping tool.
• The high-frequency driver is a very low-distortion 44.4 mm polyimide dome with a frequency response up
to 20 kHz.
• The low-frequency driver is a 12” transducer with FEM (finite element modeling) optimized motor and
suspension, optimized cooling for low power compression and a high excursion rating.
• The two positions of the industry-standard four-hole mounting on the rear of the enclosure allow for
minimizing speaker protrusion into the projector light path when aiming the speaker. They can also
provide flexibility in mounting.
Figure 2: Dolby DSR1260 horn coverage
2.3 Dolby DSR1260/DSR1280 design simulations
The Dolby DSR1260/DSR1280 uses GLL format files for soware simulation modeling.
The GLL files are used to simulate the DSR1260/DSR1280 in an acoustical simulation soware. You can
download the GLL files at https://professional.dolby.com/product/cinema-audio-products/DSR1280-
DSR1260/
About this documentation
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To run the GLL files, use EASE or EASE Focus soware. The soware can be downloaded from: https://
focus.afmg.eu/index.php/fc-downloads-en.html.
Note: While the Dolby DSR1260 is commonly used for sidewalls, and the DSR1280 for overheads,
Dolby provides simulations for both speakers in both positions to meet the needs of an installation.
Dolby DSR1260 GLL
There are two GLL files for the DSR1260. The “DSR1260 Sidewall” is for sidewall simulations only. The zero-
degree vertical aiming reference is the back of the enclosure, thus the polar has a built-in 15-degree
downward angle from the transducers. The “DSR1260 Overhead” GLL polar references the zero-degree
vertical aiming reference to the front of the enclosure, so the transducers directly point where the GLL is
aimed. The overhead polar was measured with the enclosure rotated 90 degrees counterclockwise (low-
frequency horn on the right when looking at the front of the enclosure), and the horn rotated 90 degrees
clockwise such that the top horizontal of the coverage pattern is still at the top of the rotated enclosure.
When used in the room model, the top horizontal should always be closest to the ceiling no matter the box
aiming. In the actual installation, the horn can be rotated such that the enclosure can be mirrored for the two
overhead rows.
Dolby DSR1280 GLL
There are two GLL files for the DSR1280. The “DSR1280 Sidewall” is for sidewall simulations only. The zero-
degree vertical aiming reference is the back of the enclosure, thus the polar has a built-in 15-degree
downward angle from the transducers. The “DSR1280 Overhead” GLL polar references the zero-degree
vertical aiming reference to the front of the enclosure, so the transducers directly point where the GLL is
aimed. The overhead polar was measured with the enclosure rotated 90 degrees counterclockwise (LF on
right when looking at the front of the enclosure) and the horn rotated 90 degrees clockwise such that the top
horizontal of the coverage pattern is still at the top of the rotated enclosure. When used in the room model,
the top horizontal should always be closest to the ceiling regardless of the angle of the enclosure. In the
actual installation, the horn can be rotated such that the enclosure can be mirrored for the two overhead
rows.
Figure 3: Dolby DSR1260 shown for reference
Introduction to the Dolby speaker DSR1260/DSR1280
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2.4 General room placement
This section provides information on the placement of the Dolby DSR1260/DSR1280 in a standard auditorium
and in an auditorium equipped with Dolby Atmos.
Figure 4: Standard auditorium example
Figure 5: Dolby Atmos equipped auditorium example
2.5 General information about the Dolby DSR1260/DSR1280
Use the information provided in this section to aim the Dolby DSR1260/DSR1280 for precise sound
distribution.
2.5.1 Placement of the Dolby DSR1260/DSR1280 on a wall or ceiling
The Dolby DSR1260/DSR1280 can be attached to a wall or ceiling. For 5.1 or Dolby Surround 7.1 rooms, you
should follow common industry practices on speaker placement and aiming. For Dolby Atmos rooms, follow
the Dolby Atmos Specification Guide, which can be found here: https://professional.dolby.com/siteassets/
cinema-products---documents/dolby-atmos-specifications.pdf.
2.5.2 Determining proper horizontal aiming for the side and rear surround
loudspeakers
For 5.1 and Dolby Surround 7.1 installations, the side and rear surrounds do not have a horizontal angling
requirement where speakers point toward the central listening area (CLA).
For Dolby Atmos installations, to determine the proper horizontal aiming for the side- and rear-surround
loudspeakers, define a rectangle in the CLA.
Side and rear surround loudspeakers adjacent to the central listening area must aim directly into the
auditorium (that is, 0° from perpendicular), ±10°.
General room placement
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For installations that utilize loudspeaker pairing, splaying the paired loudspeakers will improve sound
coverage. For all loudspeaker pairs, we recommend these aiming parameters, based on the CLA:
• Aim the forward paired loudspeaker to the near-side forward corner.
• Aim the rearward paired loudspeaker to the near-side rear corner.
Figure 6: Horizontal aiming for side and rear surround
2.5.3 Side and rear surround vertical aiming
Side-and rear-surround loudspeakers should be tilted vertically to orient the axis of each loudspeaker to the
ear height of a seated listener in the farthest seat. The loudspeaker can be aimed higher, but not by more
than half the loudspeaker vertical coverage angle. Typically, rear-surround loudspeakers should all have the
same downward tilt. The tilt of the side-surround loudspeakers should not change abruptly (>10°) from
speaker to speaker along the array.
Introduction to the Dolby speaker DSR1260/DSR1280
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Figure 7: Side and rear vertical surround aiming example
2.5.4 Top surround position
Top-surround loudspeakers must always be placed as le/right pairs, with the le loudspeaker and right
loudspeaker at the same distance from the front wall.
The top-surround loudspeaker pairs must be placed symmetrically with respect to the screen center line. The
top-surround arrays should typically be placed in line with the le-center and right-center screen
loudspeakers.
We recommend wider spacing for tall auditoriums, which is also acceptable for typical auditoriums when
standard placement is unachievable. The maximum width between top-surround loudspeakers should then
be determined by elevation angles as follows (See Figure 8): Let E be the elevation angle of the nearest side-
surround loudspeaker measured from the RLP. The elevation angle of the corresponding top-surround array
should be greater than or equal to 45 degrees plus half of angle E. For example, if E is 20 degrees, then the
elevation angle of the top-surround array should be greater than or equal to 55 degrees.
If there is no side-surround loudspeaker directly adjacent to the RLP, or it is unclear which loudspeaker to
reference, it is acceptable to take angle E from the midpoint between two side-surround loudspeakers, one
that is slightly in front of and one slightly behind the RLP. Likewise, for the top-surround elevation angle, 45
degrees +E/2, an interpolated point between two top-surround loudspeakers can be used.
General information about the Dolby DSR1260/DSR1280
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Figure 8: Top surround position example
2.6 Selecting brackets and yokes
Mounting brackets and yokes for Dolby DSR1260/DSR1280 are not provided by Dolby. Choose a mounting
bracket or yoke that meets the mounting requirements of the auditorium, allowing for needed vertical and
horizontal angle adjustment. The bracket or yoke must support the weight of the Dolby DSR1260/DSR1280
(55 lb or 25 kg) with at least a 5:1 safety factor. See section Dolby DSR1260/DSR1280 dimensions on page 31
for rear mounting pattern dimensions.
2.7 Dolby DSR1260/DSR1280 wire selection
This section can assist you in selecting the correct wire gauge.
Typically, no more than 0.5 dB ( or 11%) of power should be lost in the cabling. The Dolby DSR1260/DSR1280
input plates accept an American wire gauge (AWG) of 18 AWG to 6 AWG (1 mm2-16 mm2).
Note: The input terminals are marked with indicators to show the polarity. Per International
Electrotechnical Commission (IEC) standards, a positive voltage on the positive marked input results
in the transducers moving outward You must verify the positive and negative markings for each
respective product. Always tie the cable down to the available hardware to minimize any buzzing or
pullouts. If possible, aer wiring is completed, play sound through the speaker to identify any
connection issues, buzzing, or rattling.
2.8 Contacting Dolby
You can contact Dolby Cinema Solutions and Support using email or regional telephone numbers. You can
also access documentation by visiting the Dolby customer portal.
Contact Dolby Cinema Solutions and Support
• Send an email to [e-mail].
Introduction to the Dolby speaker DSR1260/DSR1280
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• Call:
Americas: [phone]
Europe/Middle East/Africa (EMEA): [phone]
Asia-Pacific (APAC): [phone]
Japan: [phone]
Access documentation
Visit customer.dolby.com.
Submit feedback about this documentation
Send an email to [e-mail]
Contacting Dolby
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3
Assembling, installing, and aiming the Dolby
DSR1260/DSR1280
The following sections provide instructions on how to assemble, install, and aim the DSR1260/
DSR1280. In the sections below, tools are required to complete the tasks. Please refer to each section
for more details on required tools.
Note: Dolby does not provide mounting brackets or a yoke for the Dolby DSR1260/
DSR1280.
The list below is an outline of this chapter:
•Horn rotation on the Dolby DSR1260/DSR1280
•Installing brackets
•Installing a yoke
•Aiming the Dolby DSR1260/DSR1280 using a laser
•Installing the safety cable
•Connecting the Dolby DSR1260/DSR1280
Assembling, installing, and aiming the Dolby DSR1260/DSR1280
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3.1 Horn rotation on the Dolby DSR1260/DSR1280
The Dolby DSR1260/DSR1280 uses a standard four-hole mount bracket, which attaches to the back of the
speaker for wall or ceiling installation, or a yoke, which is commonly used for sidewall installations. Please
select mounting brackets and yokes that are compliant with section 2.6.
If you are mounting the speaker vertically, as shown below, the horn is oriented correctly from the factory to
cover the maximum seating area possible.
Figure 9: Dolby DSR1260 horn dispersion
For vertical installation, you do not need to rotate the horn; proceed to Installing brackets on page 20.
The speaker can be installed on its side if you need to minimize obstruction to the projector image path. If
you are installing the speaker on its side, be sure to rotate the horn so that the arrows are pointing up to
ensure optimal audience coverage.
Figure 10: Dolby DSR1260/DSR1280 - Ready for mounting on its side with horn correctly rotated
The high-frequency horn needs to be rotated 90 degrees in the cabinet to provide the best coverage for the
seating area as shown below.
Horn rotation on the Dolby DSR1260/DSR1280
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Figure 11: Rotated horn sound dispersion
Dolby provides arrows at the top of the horn to indicate the correct orientation for installation of the of the
speaker. The arrows should always be pointing toward the ceiling.
Figure 12: Dolby DSR1260/DSR1280 directional arrows on horn
3.1.1 Rotating the horn on the Dolby DSR1260/DSR1280
About this task
The following tools are needed to rotate the horn:
• #2 Philips screwdriver
• Plastic prying tool
Procedure
1. Remove the 10 Phillips-head screws from the sides of the grille. Keep the screws, as they will be used to
reinstall the grille at the end of the procedure.
2. Use the plastic prying tool to pry the grille from one side of cabinet, and then the other side.
Place the grille on a clean surface, so it does not get damaged.
3. Remove the eight Phillips-head screws from high-frequency horn.
4. Use the plastic prying tool to pry the horn away from the cabinet.
Assembling, installing, and aiming the Dolby DSR1260/DSR1280
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Figure 13: Dolby DSR1260/DSR1280 diagram
Attention: Do not damage the sealing gasket, and do not pull the horn more than a few inches
away from the cabinet due to wire length restriction.
Note: In cases where the speaker is not directly over the RLP, the arrows on the horn (Figure 12)
must always point up. In speaker locations where the speaker is not facing directly down, the
arrows on the horn should be pointing toward the ceiling (Figure 11).
5. Rotate the horn 90 degrees clockwise or counterclockwise. Ensure that the arrows molded on the horn
are pointed up toward the ceiling when the speaker is mounted, as this is essential for accurate coverage.
Figure 14: Horn rotated 90 degrees with arrows facing up (Dolby DSR1260 shown for reference)
6. Place the horn back on the cabinet face, and then insert the eight Phillips-head screws.
Horn rotation on the Dolby DSR1260/DSR1280
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Note: Dolby recommends marking the cabinet with tape to indicate the direction of the arrows of
the horn. This will help in identifying the correct orientation while mounting it in the venue.
7. Tighten the eight screws (recommended 1.4 Nm) in a star pattern until the gasket is compressed.
8. Place the grille back on the cabinet (the grill will fit both ways) and lightly press the grille toward the back
of the cabinet to seat it while inserting the top-right screw. Tighten the screw to 2.5 Nm.
9. Press the opposite corner of the grille toward the back of the cabinet while inserting a screw in the
opposite corner from the first screw. Tighten the screw to 2.5 Nm.
10. Insert the remaining eight screws while pushing lightly on the grille, and then tighten to 2.5 Nm.
3.2 Installing brackets
You must select a bracket that can support the weight of the Dolby DSR1260/DSR1280. The rear panel has an
industry-standard hole pattern and will accept a variety of brackets for mounting and aiming.
About this task
The following tool is needed to attach the brackets:
• 4 mm hex driver
Procedure
1. Select four holes from the six that are provided.
The lower bolt-hole configuration provides increased downward tilt, if needed.
2. Loosen the M6 fasteners using the 4 mm hex driver, and then remove them.
3. Place the bracket on the rear panel of the speaker.
Note: Select whether to use the top or bottom holes to secure the bracket. It is important to note
that using the bottom bracket holes allows the speaker more ability to tilt down.
Figure 15: Dolby DSR1260/DSR1280 rear panel
Assembling, installing, and aiming the Dolby DSR1260/DSR1280
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