Dolby Laboratories SB218 User manual

1
Dolby Laboratories, Inc. 1275 Market Street, San Francisco, CA 94103-1410 USA T [phone] dolby.com
Dolby, Dolby Atmos, and the double-D symbol are registered trademarks of Dolby Laboratories.
© 2023 Dolby Laboratories, Inc. All rights reserved.
Dolby SB218
Dual 18” Subwoofer SB218
(DRAFT)
Dual 18” Subwoofer
© 2023 DOLBY LABORATORIES, INC

Dolby SB218
Dual 18” Subwoofer
The new Dolby® SB218 is a double 18”, front-loaded
subwoofer designed to meet the needs of high-
performance low frequency effects (LFE) channels in
Dolby Atmos®, Dolby surround 7.1 and 5.1 commercial
cinema auditorium applications. The SB218 provides
extended sub-bass response and high output,
delivering solid, low-frequency energy to every seat in
the auditorium.
© 2023 DOLBY LABORATORIES, INC 2

Dolby SB218
Components
Featuring two 18” pro-audio drivers with 4” voice coils, the
SB218 is constructed using quality materials and employs
independent acoustic chambers for each of the drivers,
improving performance and reliability.
•Pro-Audio quality, dual-18” subwoofer drivers with FEM (finite
element modeling) optimized ferrite motors and suspension
•4” Copper voice coil (compared to 3” used in many designs)
•Resonance free and heavy-duty basket design
© 2023 DOLBY LABORATORIES, INC 3
SB218 18” Driver

Dolby SB218
Components
Each of the 18-inch drivers are contained
within individual acoustic chambers in the
cabinet, providing enhanced performance and
reliability
© 2023 DOLBY LABORATORIES, INC 4
A
B
Individual acoustic chambers and
porting appointed to each driver

Dolby SB218
Components
The SB218 Subwoofer is equipped with an Advanced Input
Plate featuring a high-current, spring-loaded terminal block
allowing for quick, tool-free connection during installation.
Wiring is made quicker and simpler
Push the lever to open, insert the stripped back wire, then
release, locking the wire securely in place. No spade lugs or
crimping tool required during connection
See manual for complete wiring details.
© 2023 DOLBY LABORATORIES, INC 5
SB218 Advanced input plate

Dolby SB218
Ergonomics
Sharing the engineered versatility of the SB218XL
(PLF version), the SB218 cabinet can be stacked and is
equipped with rubber feet and indexing recesses as
well as threaded inserts, which when used with the
BKT.136 tie plates and the BKT.FLR floor brackets
(both sold separately), allow for the mechanical
coupling of units, as well as the mechanical
connection of the speaker stack (two units maximum
per stack), to the auditorium mounting surface.*
© 2023 DOLBY LABORATORIES, INC 6
BKT.FLR floor-brackets
BKT.136 tie-plates
Rubber feet and
indexing recesses

Dolby SB218
Specifications
*NOTE: BKT.FLR - Floor-brackets (sold separately) must be used to secure the entire speaker system to the
auditorium mounting surface.
Sound and vibration from this type of speaker system is high and may cause cabinets to shift. Failure to secure the
bottom speaker cabinet to the mounting surface may result in a tip/fall of the entire system which may cause
damage or injury. Proper selection of mounting hardware is not included and proper assembly and installation of
mounting hardware, including, but not limited to, selection of appropriate weight bearing support and bracket use
is the exclusive responsibility of the installer. Dolby disclaims any liability, including damage or injury, for the
selection of i) non-Dolby manufactured mounting hardware or ii) third-party manufactured mounting hardware not
previously approved in writing by Dolby, and/or bracket installation. Any modification to the speaker system
hardware provided by Dolby (i.e. mounting by drilling holes into the speaker system) will result in a null and void
product warranty.
© 2023 DOLBY LABORATORIES, INC 7

Dolby SB218
Ergonomics
The Balance Centered Handles –greatly ease
the unpacking and placement of the speaker
cabinet(s) during installation.
© 2023 DOLBY LABORATORIES, INC 8

Dolby SB218
Specifications
© 2023 DOLBY LABORATORIES, INC 9

Dolby SB218
Specifications
© 2023 DOLBY LABORATORIES, INC 10

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Dolby Laboratories, Inc. 1275 Market Street, San Francisco, CA 94103-1410 USA T [phone] dolby.com
Dolby, Dolby Atmos, and the double-D symbol are registered trademarks of Dolby Laboratories.
© 2023 Dolby Laboratories, Inc. All rights reserved.