Atlas IED DLS4 User Manual
Features
DLS4
4" Dog Leg Speaker with 8 Watt Transformer
General Description
The DLS4 was specially designed for optimum use in low ceiling
paging and background music applications where wide dispersion, high
efficiency and ease of installation are required. The DLS4 is perfectly
suited for use in airports, rail stations, retail stores, and hospitality
applications.
The system consists of a 4" high efficiency driver. A unique (patent
pending) tap selector switch design allows for easy system tuning. A
full selection of taps up to 8 Watts as well as an 8Ω bypass setting
is included for maximum system versatility. This switch “knob” also
functions as a diffuser cone, providing smooth, even dispersion of the
high frequency content from the center of the 4" driver. In fact, the high
frequency response of the DLS4 is so natural that many would assume
that the driver in the DLS4 was a coaxial design instead of a cone driver.
The easy to use DLS4 “dog leg” mounting system works with several
popular Atlas Sound hardware combinations for use in new or existing
DLS4
drywall or acoustic ceilings with or without conduit! For mineral tile
applications the popular FA81-4 tile bridge has been equipped to allow
“twist lock” installation of the economical CS95-8.
Suggested Mounting Hardware:
• Small Footprint and Press-Fit Grilles Give Discrete Installed
Appearance
• Tap Selector Switch Located Behind Speaker Magnet with Shaft
Through Center of Cone. Selector Knob Doubles as a Dispersion
Cone and Allows Tap Selection to be Done After the Speaker is
Installed in the Ceiling
• 8 Watt, High Efficiency Internal Transformer (May Be Bypassed by
Tap Selector Switch for 8Ω Operation)
• Works in Most New or Retro-Fit Ceiling Application with Atlas Sound
Hardware
• UL1480 for General Signaling and are Certified for Use in Air Handling
Spaces Under UL2043
Specifications
Power Rating 16 Watts at 8Ω
Power Taps .5, 1, 2, 4, & 8 Watts / 8Ω Bypass
Frequency Response 150Hz – 17kHz (±5dB)
Sensitivity (1W/1M) 92dB
Dispersion 105°
Woofer 4" Paper Cone
Woofer Magnet Weight 10oz (283g)
Bezel Diameter 7.75" (197mm)
Depth 4.25" (108mm)
Cut-Out Diameter 6.25" (159mm)
Weight 3lbs 5oz (1.5kg)
Mineral Tile - no enclosure - FA81-4 Tile Bridge
Mineral Tile - with enclosure - FA81-4, CS95-8
Drywall Ceiling new construction - no enclosure - FA-TR4
Drywall Ceiling new construction - with enclosure - FA-TR4, E410NT
The DLS4 will also retro-fit into existing E410 & E410-11 enclosures.
(Torsion tabs inside enclosure must be bent inwards to allow for
complete clearance of the DLS4 dog leg mounting system)
©2013 Atlas Sound L.P. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P. All other trademarks are the property of their respective owners. ATS003681 RevB 8/13
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
AtlasSound.com
DLS4
(Back)
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Architect & Engineer Specifications
Unit shall be Atlas Sound 4" diameter loudspeaker Model DLS4. Loudspeaker shall be listed by Underwriters Laboratories (UL1480 for General
Signaling and are certified for use in Air Handling Spaces under UL2043) to U.S. and Canadian safety standards. The cone shall be the damped, high-
compliance type.
Unit shall have a smooth extended frequency response over a range of 150Hz – 15kHz and a power rating of not less than 10 Watts program. The
dispersion angle shall be 105° (-6dB, 2kHz octave band). The magnet shall be a 10oz. (283g) ceramic type providing the 1" (25mm) voice coil to
operate in a magnetic field of at least 10,500 gauss. Voice coil impedance shall be 8Ω. Sensitivity shall be 92dB (measured at 1W/1M input). Free-air
resonance shall be 125Hz. Transformer primary voltage shall be 70.7V & 100V with a frequency response range of 150Hz – 15kHz (±5dB) and power
taps at .5, 1, 2, 4, & 8 Watts. Insertion loss shall not exceed 1.5dB. The maximum depth of the loudspeaker / transformer assembly shall not exceed
4.25" (108mm).
For mineral tile ceiling installation unit shall be used in conjunction with Atlas Sound tile bridge model FA81-4, and optional conical enclosure model
CS95-8. For drywall ceiling installation unit shall be used in conjunction with Atlas Sound trim ring model FA-TR4, and optional enclosure model
E410NT.
DLS4 Vertical Polars (Normalized to Zero on Axis) (-6 dB)
DLS4 Horizontal Polars (Normalized to Zero on Axis) (-6 dB)
©2013 Atlas Sound L.P. All rights reserved. Atlas Sound and Strategy Series are trademarks of Atlas Sound L.P. All other trademarks are the property of their respective owners. ATS003681 RevB 8/13
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
AtlasSound.com
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