
1' X 2'
DROP-IN SPEAKER SYSTEMS
IS125SYS
IS125SYS
FEATURES
• All in one, pre-assembled unit drops into ceiling grids to reduce installation  
 time and costs
• Integral E.O. box for conduit
• Attractive white mesh grille blends in with most acoustic ceiling tiles
• Standard 8" speaker with built-in 25/70.7V transformer
• External tap selector switch reduces wiring errors
• UL2043/UL1480 pending
APPLICATION
Installer friendly Atlas Sound IS125SYS provides clear paging and 
background music in a labor saving package. Ideal for use in shopping 
malls, department stores, and anywhere large quantities of loudspeakers 
are to be utilized.
GENERAL DESCRIPTION
The Atlas Sound IS125SYS 1’ X 2’ drop in speaker system simplifies 
loudspeaker installation by providing an all in one speaker package in 
acoustic ceiling grids. The system includes the speaker/transformer, 
enclosure and grille with an external mounted tap selector switch. The 
compact 2-unit master pack is designed to save warehouse space. You 
will enjoy clear, crisp paging, and background music from the installation 
friendly IS125SYS without compromising building cosmetics.
ARCHITECT & ENGINEER SPECIFICATIONS
The loudspeaker, transformer, baffle and enclosure shall be the Atlas Sound 1’ 
X 2’ drop in speaker system Model IS125SYS. The loudspeaker shall be an 8” 
dual cone type with an integral 25/70.7V matching transformer and externally 
mounted tap selector switch. Power taps to include .25, .5, 1, 2, and 4 Watt for 
25V and 70.7V systems. The assembly to include a speaker enclosure mounted 
to a 1’ X 2’ white metal grille.
One
  Close-up of Grille          Side View
SPEAKER NOMINAL 
8", 10oz
Dual Cone
FREQ. RESP.
85Hz-8kHz 
(±5dB)
SENSITIVITY DISPERSION TRANSFORMER 
97dB 
(1W/1M)
105-2kHz 
Octave Band 
(-6dB)
Specifications subject to change without notice
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. 
TELEPHONE: (800) 876-3333 / FAX (800) 765-3435
TAPS
.25, .5, 1, 2, 4 
Watts
XFMR INSERTION 
LOSS
1.5dB 237⁄8" L (606mm) 
127⁄8" W (327mm)
41⁄2" H (114mm)
AtlasSound.com
DIMENSIONS WEIGHT COLOR
9.5 lbs (4.3kg) Neutral 
White
 © 2005 Atlas Sound LP  Printed in U.S.A.  01105  ATS002227 RevA 11/05  SL1-2075
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