Dolby Laboratories SB218 Manuale utente
Dolby SB218
Owner's Manual
1 April 2023
Issue 2 Part number: 8800328
Notices
Copyright
© 2023 Dolby Laboratories, Inc. All rights reserved.
Dolby Laboratories, Inc.
1275 Market Street
San Francisco, CA 94103-1410 USA
Telephone 415-558-0200
Fax 415-645-4000
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, Inc.
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 PRODUCT MODEL: CID1035.
Limited warranty and warranty exclusions
THE LIMITED WARRANTY AND WARRANTY EXCLUSIONS MAY BE FOUND AT THE FOLLOWING URL: https://
www.dolby.com/us/en/about/warranty-and-maintenance-policies.html
Notices
Dolby SB218 Owner's Manual 2
Issue 2 Part number: 8800328 1 April 2023
Contents
1 Important safety and regulatory information............................................................................................4
2 Introduction to the Dolby SB218................................................................................................................ 7
2.1 About this documentation....................................................................................................................8
2.2 SB218 key features and benefits...........................................................................................................8
2.3 SB218 preinstallaton information........................................................................................................ 8
2.4 Selecting the wire for the SB218...........................................................................................................9
2.5 Additional information..........................................................................................................................9
2.6 Contacting Dolby .................................................................................................................................. 10
3 Assembling and installing the Dolby SB218...............................................................................................11
3.1 Assembling and securing the Dolby SB218.......................................................................................... 12
3.1.1 Securing an SB218 cabinet............................................................................................................. 12
3.1.2 Securing two SB218 cabinets..........................................................................................................13
3.2 Connecting and configuring the Dolby SB218 .....................................................................................14
3.2.1 Connecting the SB218 .................................................................................................................... 15
4 Dolby SB218 specifications.........................................................................................................................17
4.1 SB218 specifications............................................................................................................................. 18
4.2 Dolby SB218 dimensions.......................................................................................................................19
5 Dolby SB218 digital signal processing requirements................................................................................ 20
5.1 SB218 digital signal processing requirements..................................................................................... 21
6 System limiters............................................................................................................................................ 22
6.1 Setting system limiters..........................................................................................................................23
7 Documentation revision history................................................................................................................. 25
Contents
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Issue 2 Part number: 8800328 1 April 2023
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 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 diering
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 speaker(s).
The installer assumes all risk of loss and/or injury arising out of the use of the
supplied rigging hardware with any other speaker. 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.
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 apparatus 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.
Important safety and regulatory information
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Issue 2 Part number: 8800328 1 April 2023
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.
This product is intended for indoor use only.
Do not block any ventilation openings. Install in accordance with the instructions as
detailed in this manual and the Product Information document.
When a rolling cart is used to transport the speaker, use caution when moving the
cart/speaker system 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.
Caution: Hearing damage can occur by prolonged exposure to
excessive sound pressure level (SPL); the speaker is easily
capable of generating SPL suicient 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.
Caution: Vibration from this type of speaker system may
cause cabinets to shi. Failure to secure the speaker cabinet
to the building structure may result in the speaker system
tipping or falling, which may cause damage or injury.
Caution: 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.
Caution: Use proper liing techniques when working with
heavy objects to avoid personal injury. Always be careful
when moving the SB218 or the assembled speaker system
and employ at least two people when attempting any
relocation of the speakers.
High temperature warning: The speaker 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.
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.
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Note: This product can be shipped only by surface transportation. Do not ship by air.
SAFETY SYMBOL KEY
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.
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 enclosure that may be of suicient
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://
www.dolby.com/us/en/about/environmental-commitment.html.
Important safety and regulatory information
Dolby SB218 Owner's Manual 6
Issue 2 Part number: 8800328 1 April 2023
2
Introduction to the Dolby SB218
The Dolby SB218 (also referred to as the SB218 in this manual) is designed to meet the needs of high-
performance Low Frequency Eects (LFE) channels in small to medium-sized Dolby Atmos or 7.1
cinemas. The SB218 delivers extended low-frequency response and high output, filling theaters with
solid low-frequency impact to every seat in the venue. With intuitive ergonomic design and features,
the SB218 enables quick, easy installation and service. Built on the foundation of the Dolby industry-
leading system design and support philosophy, the SB218 provides elevated LFE subwoofer
performance and streamlines speaker integration.
Figure 1: Dolby SB218
Following is an outline of this chapter:
•About this documentation
•SB218 key features and benefits
•SB218 preinstallaton information
•Selecting the wire for the SB218
•Additional information
•Contacting Dolby
Introduction to the Dolby SB218
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2.1 About this documentation
This documentation provides the key features and benefits of the Dolby SB218 and shows you how to install
the SB218 in a typical cinematic exhibition environment.
2.2 SB218 key features and benefits
The Dolby SB218 is a single enclosure, dual-chamber, dual-driver, high-performance LFE subwoofer that is
designed to produce low frequencies.
• Each 18-inch driver is contained in an independent chamber within the cabinet that provides improved
performance and reliability.
• Rubber feet on the bottom of the cabinet provide vibration control.
• Integrated handles on the sides of the speaker cabinet are positioned at the center of gravity to improve
safety and comfort during handling and installation.
• Integrated mounting points are provided for using tie plates (BKT.136, sold separately) when coupling two
SB218 cabinets together safely and securely in a stacked configuration.
• BKT.FLR floor bracket kit (sold separately) enables secure installation to the building structure. The kit
includes two brackets and four M10 washers.
• The advanced input plate features a high-current, spring-loaded terminal block, which enables quick
installation with no crimp tools or spade lugs needed, vastly simplifying installation.
2.3 SB218 preinstallaton information
In a typical auditorium, the SB218 is installed at the front of the auditorium, near ground level, and equal
with the screen plane.
Caution: Design and construction of a screen platform must be performed by a qualified, licensed,
and insured professional in accordance with all laws, rules, and regulations applicable for the
installation site. Failure to do so could result in serious personal injury or even death.
The following figure shows the placement of the speaker, as indicated in the
Dolby Atmos Specifications
.
When multiple screen subwoofers are used, closely clustering the cabinets can increase the eiciency
through mutual coupling, as shown in this figure. If a single cabinet or cluster is used, it should be placed
near the center of the screen, but asymmetrically with respect to the center of the room to minimize
stimulation of standing waves (room modes). Other configurations are also acceptable, such as uniformly
spacing multiple cabinets along the front wall to improve coverage.
Introduction to the Dolby SB218
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Figure 2: Typical auditorium installation
2.4 Selecting the wire for the SB218
It is important that you select the correct wire gauge for the SB218.
Typically, no more than 0.5 dB (or 11%) of power should be lost in the cabling. The SB218 connectors accept
an American Wire Gauge (AWG) of 18 AWG to 6 AWG (1 mm2 to 16 mm2). When selecting a wire gauge, always
use industry-standard practice, based on the rated impedance of the speaker and the length of the cable.
Typically, we recommend a wire gauge of 14 AWG to 10 AWG (2.5 mm2 to 6 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, aer wiring is completed, play sound through the speaker to identify any
connection issues, buzzing, or rattling.
2.5 Additional information
There is additional information regarding the SB218 that you need to consider.
• System weight for stability calculations is approximately 77.6 kg (171 lb).
• Allow at least 11 inches (30 cm) between the port exits and any obstruction (including side wall or bale
wall construction). Blockage of the ports results in reduced low-frequency extension and a decreased life
span of the product.
• Amplifier selection is aided by additional data, as indicated in the SB218 specifications. (See the link at
the end of this section.)
• The power-draw specification provides the actual power draw in watts at the rated Vrms in the design,
instead of calculated power. This can aid in optimizing amplifier power budgets, as the measured power
is almost always lower than calculated power (sometimes significantly).
Selecting the wire for the SB218
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• The maximum voltage peak specification is useful for selecting an amplifier that has a voltage rail at or
above the rating for the maximum dynamic performance of the speaker. Some amplifier companies
provide this data in their respective technical data sheets (or provide the data by request).
Related information
Dolby SB218 specifications on page 17
2.6 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 cinemasupport@dolby.com.
• Call:
AMERICAS: +1-415-645-4900
ASIA, CHINA, and PACIFIC RIM: +86-400-810-5850
EMEA: +44-33-0808-7700
JAPAN: +81-3-4520-9798
Access documentation
Visit https://customer.dolby.com.
Submit feedback about this documentation
Send an email to documentation@dolby.com.
Introduction to the Dolby SB218
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Altri manuali per SB218
1
Indice
Altri manuali Dolby Laboratories Subwoofer
