
M1000 & M1000-W
Sound Masking Loudspeaker Assemblies
M1000-W
Upward Dispersion 
Setup
M1000
Upward Dispersion 
Setup
Features
•  Pre-assembled unit includes 8" dia. loudspeaker, transformer, 
enclosure, baffl e and mounting hardware
•  Labor-saving hardware package – complete with new snap hanger 
assembly, allows quick and easy installation
•  Innovative input panel includes combination knock-out and strain 
relief connector to accommodate fl exible or rigid conduit
•  Design enables upward, downward, or horizontal orientation
•  734 in3 enclosure for extended low frequency response
•  Available in Black or White epoxy fi nishes to blend with a variety of 
open ceiling plans
•  Suitable for use above suspended ceiling systems or open ceiling 
spaces approved for use in air handling (plenum ceilings)
•  UL 1480 & UL 2043
Technical Specifi cations
Loudspeaker  8" Dual Cone 
Magnet Weight  10 oz (260 g) 
Transformer Taps  .25, .5, 1, 2, & 4 Watts, plus an off switch 
(plus an 8 Ω bypass on the M1000-W)
Sound Dispersion Upward, Downward, or Horizontal 
Enclosure Volume 734 in3 (12,075.1 cm3) 
Height  51⁄2" (13.97 cm) 
Length  119⁄16" (29.4 cm) 
Width  119⁄16" (29.4 cm) 
Weight  9 lbs (3.4 kg)
M1000
Horizontal Dispersion 
Setup
General Description
With a majority of America’s workplaces having adopted an open office 
plan, favoring a labyrinth of cubicles over traditional closed offices, conversational privacy has become an increasingly sensitive issue. A properly designed sound masking system can significantly increase speech 
privacy and improve the overall work environment. 
The new Atlas Sound M1000 masking speaker assembly is designed to 
accurately reproduce the needed spectrum of masking sound into the 
plenum space. The innovative 734 in 
low frequency response. A specially designed 8" dual cone loudspeaker 
is included in the package. A high efficiency 70.7V internal transformer 
is coupled to an external selector switch for easy system tuning. For 
more precise adjustments, an off switch and a wide selection of wattage taps ranging from .25 watts to 4 watts are provided. Along with the 
various wattage tap selections, the M1000-W comes with an 8 
setting. 
The exclusive Atlas Sound EZ hang brackets simplify installation. This 
innovative suspension system utilizes two collapsible galvanized hangers configured to allow quick upward, downward, or horizontal firing 
installation. The hangers are factory-installed on the unit and fold flat 
for shipping. To meet most local code requirement, the M1000 includes 
an innovative cover containing both knockouts and a strain relief. This 
system will allow the use of rigid or flexible conduit (if required) and 
easily accommodates “through” connections on the removable plate. 
To fit continually shrinking construction budgets, the M1000 is very 
aggressively priced. Contact your regional Atlas Sound representative for 
details.
3
 square enclosure ensures ample 
 Ω bypass 
Architect & Engineer Specifi cations
Sound masking assembly shall be Atlas Sound model M1000 or 
M1000-W. Unit shall contain Atlas Sound 8" diameter Loudspeaker 
equipped with a 70.7V transformer, an enclosure, baffle, and related 
mounting hardware. It shall be factory assembled, wired and ready for 
installation. Model M1000 shall include external tap selector switch with 
an off position and .25 .5, 1, 2, & 4 watts power taps clearly identified. 
Model M1000-W shall include an external tap selector switch with an off 
position and .25 .5, 1, 2, & 4 watts power taps and an 8 
identified. Suitable strain relief shall be installed to protect hook-up leads 
and accomodate conduit installations. Provisions on input panel also 
included to facilitate up to 
The CRS enclosure shall measure 11
1
⁄2" (140 mm) H and have a volume of 734 in3 (12,075.1 cm3). It shall 
x 5 
include fiberglass material to further dampen the enclosure. Baffle shall 
be a sturdy steel one-piece CRS grille measuring 11 
119⁄16" (243 mm) W. Grille shall have a perforated loudspeaker opening. 
Baffle and enclosure shall be finished in textured black epoxy or white 
epoxy finish on the M1000-W. Assembly shall include a dual suspension hanger system which fastens via holes provided on the enclosure. 
Hangers shall be adjusted for (upward, downward or horizontal 
_________ radiation.)
3
⁄4" conduit. 
9
⁄16" (243 mm) L x 119⁄16" (243 mm) W 
 Ω bypass clearly 
9
⁄16" (243 mm) L x 
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A. 
TELEPHONE: (800) 876-3333 
FAX (800) 765-3435
©2008 Atlas Sound  SL9-2018  ATS001311 RevB 2/08
AtlasSound.com
M1000
Input Panel & Top 
Selector Switch
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