Dolby Laboratories SB218XL User manual

Dolby Speaker SB218XL
Owner's Manual
3 March 2022
Issue 1 Part number: 8800302

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.
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.
Patents
THIS PRODUCT MAY BE PROTECTED BY PATENTS AND PENDING PATENT APPLICATIONS IN THE UNITED
STATES AND ELSEWHERE. FOR MORE INFORMATION, INCLUDING A SPECIFIC LIST OF PATENTS PROTECTING
THIS PRODUCT, PLEASE VISIT http://www.dolby.com/patents.
Product model
THIS DOCUMENTATION APPLIES TO MODEL: CID1032.
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 Speaker SB218XL Owner's Manual 2
Issue 1 Part number: 8800302 3 March 2022

Contents
1 Important safety and regulatory information............................................................................................4
2 Introduction to Dolby Speaker SB218XL.................................................................................................... 7
2.1 About this documentation....................................................................................................................8
2.2 SB218XL key features and benefits.......................................................................................................8
2.3 Selecting the wire for the SB218XL.......................................................................................................9
2.4 Installing Speaker SB218XL in a typical auditorium ........................................................................... 9
2.5 Additional information..........................................................................................................................10
2.6 Contacting Dolby .................................................................................................................................. 10
3 Assembling Dolby Speaker SB218XL.......................................................................................................... 11
3.1 Assembling and installing Dolby Speaker SB218XL.............................................................................12
3.1.1 Securing an SB218XL cabinet......................................................................................................... 12
3.1.2 Stacking two SB218XL speakers..................................................................................................... 14
3.2 Connecting electrical components ......................................................................................................15
4 Dolby Speaker SB218XL specifications.......................................................................................................19
4.1 SB218XL specifications......................................................................................................................... 20
4.2 Dolby Speaker SB218XL dimensions.................................................................................................... 21
5 Dolby Speaker SB218XL digital signal processing requirements.............................................................. 22
5.1 SB218XL digital signal processing requirements................................................................................. 23
6 Setting system limiters................................................................................................................................24
7 Documentation revision history................................................................................................................. 26
Contents
Dolby Speaker SB218XL Owner's Manual 3
Issue 1 Part number: 8800302 3 March 2022

1
Important safety and regulatory information
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 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.
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
Important safety and regulatory information
Dolby Speaker SB218XL Owner's Manual 4
Issue 1 Part number: 8800302 3 March 2022

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.
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.
Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus that produce 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.
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.
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: Use proper liing techniques when working with
heavy objects to avoid personal injury. Always be careful
when moving the SB218XL and employ at least two people
when attempting any relocation of the speakers.
Caution: Vibration from this type of speaker system may
cause cabinets to shi. Failure to secure the bottom speaker
cabinet to the building structure may result in the speaker
system tipping or falling, which may cause damage or injury.
Caution: Hearing damage can occur by prolonged exposure to
excessive sound pressure level (SPL); the speaker 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.
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.
Dolby Speaker SB218XL Owner's Manual 5
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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.
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.
Russian environmental regulations and compliance
This product complies with Russian EAC RoHS requirements.
Important safety and regulatory information
Dolby Speaker SB218XL Owner's Manual 6
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Caution:

2
Introduction to Dolby Speaker SB218XL
The Dolby Speaker SB218XL (also referred to as SB218XL in this manual) is designed to meet the needs
of high-performance Low Frequency Eects (LFE) channels in large Dolby Atmos or premium large
format (PLF) cinemas. The SB218XL delivers extended low-frequency response and high output, filling
large theaters with solid low-frequency impact to every seat in the venue. With intuitive ergonomic
design and features, the SB218XL enables quick, easy installation and service. Built on the foundation
of the Dolby industry-leading system design and support philosophy, the SB218XL provides elevated
premium large format (PLF) performance and streamlines speaker integration.
Figure 1: Dolby Speaker SB218XL
This chapter covers:
•About this documentation
•SB218XL key features and benefits
•Selecting the wire for the SB218XL
•Installing Speaker SB218XL in a typical auditorium
•Additional information
•Contacting Dolby
Introduction to Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 7
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2.1 About this documentation
This documentation provides the key features and benefits of the Dolby Speaker SB218XL and shows you
how to install the system in a typical cinematic exhibition environment.
2.2 SB218XL key features and benefits
Dolby Speaker SB218XL is a single enclosure, dual-chamber, dual-driver, high-performance LFE subwoofer
designed to produce low frequencies.
Figure 2: Dolby Speaker SB218XL
• Contains two 18-inch woofers that can be driven in parallel, or driven individually to maximize available
amplifier power.
• Each 18-inch driver is contained in an independent chamber within the cabinet that provides improved
performance and reliability.
• The advanced input plate incorporates a unique flip-card printed circuit board that enables electrical
routing for parallel wiring of the drivers powered from a single amplifier channel, or individual wiring to
the amplifier channel on each driver. With the SB218XL flip card, you can select either biamplifier mode or
single-amplifier mode.
• 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
SB218XL 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.
Related information
SB218XL key features and benefits
Additional information on page 10
Selecting the wire for the SB218XL on page 9
Introduction to Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 8
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Securing an SB218XL cabinet on page 12
2.3 Selecting the wire for the SB218XL
It is important that you select the correct wire gauge for the SB218XL.
Typically, no more than 0.5 dB (or 11%) of power should be lost in the cabling. The SB218XL input plates
accept an American Wire Gauge (AWG) of 18 AWG to 6 AWG (1 mm2 to 16 mm2). 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, aer wiring is completed, play sound through the speaker to identify any
connection issues, buzzing, or rattling.
Related information
Connecting electrical components
Connecting electrical components on page 15
SB218XL key features and benefits
SB218XL key features and benefits on page 8
2.4 Installing Speaker SB218XL in a typical auditorium
In a typical auditorium, the SB218XL is installed at the front of the auditorium, near ground level, and equal
with the screen plane.
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 eiciency
through mutual coupling, as shown in this figure. If a single cabinet or cluster is used, it should be placed
near screen center, 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.
Figure 3: Typical auditorium installation
The .GLL format file for soware simulation modeling
There is a .GLL file that you can use to simulate SB218XL in acoustical simulation soware. You can
download the .GLL file at https://www.dolby.com/us/en/professional/cinema/products/SB218XL. To run
the .GLL file, use EASE or EASE Focus soware. EASE Focus soware is free and can be downloaded from
https://focus.afmg.eu/index.php/fc-downloads-en.html.
Selecting the wire for the SB218XL
Dolby Speaker SB218XL Owner's Manual 9
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Following is a description of the SB218XL .GLL file:
•SB218 XL .GLL file
The speaker entry point into the simulation is at the bottom of the speaker. For correct simulation, place
the height entry point (z axis) at the platform that is attached to the building structure or the auditorium
floor height.
2.5 Additional information
Additional information regarding the SB218XL is available.
• System weight for stability calculations is approximately 94.1 kg (207.5 lb).
• Amplifier selection is aided by additional data, as indicated in the SB218XL 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).
• The maximum voltage peak specification is useful for selecting an amplifier that has a voltage rail at or
above the rating for the speaker maximum dynamic performance. Some amplifier companies provide this
data in their respective technical data sheets (or provide the data by request).
• Wire gauge selection should always use industry-standard practice based on the speaker rated ohms and
cable length. Typical maximum acceptable power loss is 0.5 dB, or less than 11%.
Related information
Connecting electrical components
SB218XL specifications
SB218XL key features and benefits
SB218XL key features and benefits on page 8
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 [e-mail].
• Call:
AMERICAS: [phone]
ASIA, CHINA, and PACIFIC RIM: [phone]
EMEA: [phone]
JAPAN: [phone]
Access documentation
Visit https://customer.dolby.com.
Submit feedback about this documentation
Send an email to [e-mail].
Introduction to Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 10
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3
Assembling Dolby Speaker SB218XL
This chapter provides instructions for assembling and installing Dolby Speaker SB218XL.
The following sections provide instructions on how to assemble and install Speaker SB218XL.
•Assembling and installing Dolby Speaker SB218XL
•Connecting electrical components
Assembling Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 11
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3.1 Assembling and installing Dolby Speaker SB218XL
This section provides instructions for assembling and installing an SB218XL.
About this task
The SB218XL is designed to not shi during use when placed directly on a flat and level concrete floor.
Installation on any other surface type may cause the cabinets to shi during use. Should the SB218XL shi
during use, regardless of the surface type it is installed on, it must be secured to the building structure. The
Installer is responsible for inspecting any installation of an unsecured SB218XL to ensure that it does not shi
over time. The Installer assumes all responsibility and liability for the installation of this product.
3.1.1 Securing an SB218XL cabinet
Instructions are provided to install a single SB218XL cabinet. When stacking a second SB218XL speaker on an
installed unit, refer to the link at the end of this section.
About this task
Parts and tools:
• Installer-provided 6 mm hex driver.
• BKT.FLR brackets (not required when installing on the ground).
• Installer-provided serviceable thread-locking compound (recommended).
• Installer-provided acoustic or nonhardening caulking (recommended).
Note: BKT.FLR floor brackets are available from Dolby (sold separately) to secure the speaker system
to the building structure. When using the BKT.FLR brackets, the installer must supply the mounting
hardware necessary to secure the speaker system to the building structure. The holes in the bracket
are sized for M10 or 3/8- inch bolts.
Note: Check with local building codes, and always refer the installation to a qualified professional.
1. Determine the proper placement of the system.
2. Determine if it is necessary to secure the SB218XL to the building structure to prevent the speaker system
from shiing during use.
3. Remove the four M10 bolts from the bottoms side of the SB218XL speaker cabinet, as shown in the
following figure. These bolts are pre-installed in the SB218XL cabinet.
Assembling Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 12
Issue 1 Part number: 8800302 3 March 2022
Procedure

Figure 4: Secure a single SB218XL speaker
4. Reinstall the M10 bolts with the M10 washers, included with the BKT.FLR kit, securing the BKT.FLR
brackets, and then tighten the M10 bolts to 12 Nm (8.9 -lb, 106 in-lb).
5. Secure the SB218XL to the building structure with installer provided mounting hardware.
Note: Proper selection and installation of mounting hardware is the exclusive responsibility of the
installer. We recommend using M10 bolts and a serviceable thread-locking compound (for example,
Loctite 243). We also recommend applying acoustic or other nonhardening caulk to the bottom side
of the bracket to isolate speaker vibration from the building structure.
Caution: Dolby disclaims any liability, including damage or injury, for failing to properly place or
secure the speaker system. The Installer assumes all responsibility and liability for the installation of
this product.
Caution: Dolby disclaims any liability, including damage or injury, for the use of mounting hardware,
supports, and brackets not supplied by Dolby. Any modification to the speaker system (for example,
mounting by drilling holes into the speaker system) will render the product warranty null and void.
Related information
Connecting electrical components
Stacking two SB218XL speakers on page 14
SB218XL key features and benefits
SB218XL key features and benefits on page 8
Assembling and installing Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 13
Issue 1 Part number: 8800302 3 March 2022

3.1.2 Stacking two SB218XL speakers
Instructions are provided for stacking a second SB218XL speaker on an installed unit.
About this task
Parts and tools:
• Installer-provided 6 mm hex driver.
• BKT.136 tie-plates (sold separately).
• BKT.FLR brackets (recommended [sold separately]).
• Installer-provided serviceable thread-locking compound (recommended).
• Installer-provided acoustic or nonhardening caulking (recommended).
Note: BKT.136 tie (coupling) plates are available (sold separately) and are used to connect two
SB218XL speakers together in a stacked configuration to prevent movement or shiing of the cabinets
during use. These tie plates must be installed on stacked units prior to system use.
Note: BKT.FLR floor brackets are available from Dolby (sold separately) to secure the speaker system
to the building structure. When using the BKT.FLR brackets, the installer must supply the mounting
hardware necessary to secure the speaker system to the building structure. The holes in the bracket
are sized for M10 or 3/8- inch bolts.
Procedure
1. Place the upper SB218XL on top of the lower secured cabinet, ensuring that the rubber feet of the upper
unit properly seat within the recesses of the lower unit.
2. Locate the two-bolt tie-plate mounting locations on the sides of each cabinet.
3. Remove the two M10 bolts from the side of the lower SB218XL cabinet, and then remove the two M10
bolts from the side of the upper SB218XL cabinet.
Figure 5: Remove M10 bolts from lower and upper cabinet
4. Reinstall the M10 bolts through the BKT.136 tie plates using the included M10 washers (packaged with
BKT.136), and then tighten the M10 bolts to 12 Nm (8.9 -lb, 106 in-lb)
Assembling Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 14
Issue 1 Part number: 8800302 3 March 2022

Note: We recommend a serviceable thread-locking compound (for example, Loctite 243). When
installing the M10 bolts.
Caution: Use proper liing techniques when working with heavy objects to avoid personal injury.
Always be careful when moving the SB218XL, and employ at least two people when attempting any
relocation of the speakers.
Caution: Dolby disclaims any liability, including damage or injury, for failing to properly secure the
speaker system. The Installer assumes all responsibility and liability for the installation of this
product.
Related information
SB218XL key features and benefits
Securing an SB218XL cabinet on page 12
Connecting electrical components
Connecting electrical components on page 15
3.2 Connecting electrical components
To be sure that the speakers work correctly, you must connect all electrical components properly.
Connecting audio
Required tool: Wire stripper
Caution: Turn o all amplifiers when connecting speaker wiring.
The Speaker SB218XL connectors accept an American Wire Gauge (AWG) of 18 AWG to 6 AWG (1 mm2 to 16
mm2). Typically, a wire gauge of 14 AWG to 10 AWG is recommended (2.5 mm2 to 6 mm2).
Basic information is provided regarding the SB218XL input plates, choosing between the two modes of
operation, and installing the wiring. Detailed information regarding speaker operating modes is also
provided.
Connecting and configuring the SB218XL
The SB218XL input plate is mounted on the side of the speaker for easy access to the wiring and the flip card,
as shown in the following figure.
Figure 6: SB218XL input plate location
Connecting electrical components
Dolby Speaker SB218XL Owner's Manual 15
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The input plate contains a flip card that you can use to select the operation mode. To remove the flip card,
pull it straight out (rocking it a little if needed). The flip card orientation determines whether the drivers are
operated in parallel or individually. If you turn the flip card so the arrow points to the le, the wiring
connection to position 1 powers both of the 18-inch speaker drivers in parallel. If you turn the flip card so the
arrow points to the right, each of the drivers is independent and must be powered individually by separate
amplifier channels. Terminal pair 1 powers the le driver, and terminal pair 2 powers the right driver (when
viewed from the front). This requires connections to both wiring position 1 and wiring position 2. (See the
following two figures.)
Figure 7: SB218XL parallel operating mode
Figure 8: SB218XL independent operating mode
Note: The input terminals are marked with indicators to show their polarity. Per 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. Refer to the figures
in the wiring sections that follow.
To install wires into the advanced input plate:
1. Strip back the wire insulation/sheath to 18 mm (0.7 in).
2. Locate the orange terminal tab and push it inward. This terminal tab is spring loaded; pushing it inward
opens the gap in the hole directly below the tab.
3. Insert the wire fully into the hole.
Assembling Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 16
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4. Release the terminal tab. The spring mount clamps the wire securely.
5. Inspect the terminal for any stray wire strands.
The low-frequency parallel configuration is a 4-ohm load to a single amplifier channel.
Figure 9: Low-frequency parallel wiring configuration
The alternate low-frequency cabinet wiring configuration provides independent wiring of the two drivers for
two 8-ohm loads that are driven by independent amplifier channels. You should use the same recommended
processing for both channels. Vrms limiting remains the same as in parallel mode, as only the amplifier power
requirement decreases by 50 percent for the respective amplifier channel. In this configuration, you need to
point the flip card to the right.
Figure 10: Low-frequency independent-wiring configuration
Related information
Connecting electrical components
SB218XL specifications
Connecting electrical components on page 15
Stacking two SB218XL speakers on page 14
Connecting electrical components
Dolby Speaker SB218XL Owner's Manual 17
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SB218XL key features and benefits
Selecting the wire for the SB218XL on page 9
Connecting electrical components
Connecting electrical components on page 15
Assembling Dolby Speaker SB218XL
Dolby Speaker SB218XL Owner's Manual 18
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4
Dolby Speaker SB218XL specifications
The specifications and dimensions for Dolby Speaker SB218XL are provided here.
•SB218XL specifications
•Dolby Speaker SB218XL dimensions
Dolby Speaker SB218XL specifications
Dolby Speaker SB218XL Owner's Manual 19
Issue 1 Part number: 8800302 3 March 2022

4.1 SB218XL specifications
These are the specifications for the SB218XL.
Table 1: Dolby Speaker SB218XL specifications
Specification Technical data Notes
Frequency range 22 Hz - 170 Hz -6 dB in half-space conditions using
required processing.
Usable low-frequency response 19 Hz -10 dB in half-space conditions.
Coverage window Omni
Rated impedance 4 ohms parallel mode/8 ohms
independent mode
Sensitivity @ 1 watt 102 dB Measured with 12 dB crest pink noise
@ 2 Vrms in half-space conditions with
required highpass filter and lowpass
filter.
Power handling 1,600 W @ 80 Vrms 12 dB crest pink noise for two hours
with required highpass filter and
lowpass filter, based on AES2-2012
standard, calculated power based on
rated impedance.
Power draw 1,140 W Measured average power over five
seconds at the rated Vrms using 12 dB
crest pink noise with required
highpass filter and lowpass filter. This
measured power draw from the
amplifier is useful for estimating
amplifier sizing in overall system
design.
Maximum voltage peak 200 Vpk Measured Vpk over 100 hours using a
Hann-shaped sine-wave burst at the
maximum excursion frequency of the
system. This data is useful for setting
peak stop limiters and amplifier
selection.
Maximum continuous sound pressure
level (SPL) @ 1 meter
134 dB Calculated from rated sensitivity and
power.
Measured acoustic peak SPL @ 1
meter
144 dB Measured peak SPL over five seconds
at rated Vrms using 12 dB crest pink
noise with required highpass filter and
lowpass filter.
SB218XL weight 207.5 lb (94.1 kg)
Note: These specifications provide typical values and do not represent absolute limits.
Dolby Speaker SB218XL specifications
Dolby Speaker SB218XL Owner's Manual 20
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