SD72 Series
8" Preassembled Speaker Package
SD72
Features
• 10 oz Dual Cone Speaker Provides Familiar Response & Performance
• Quality 5 Watt Dual Voltage Transformer
• Individually Packaged for Stocking & Ordering Convenience
• Safety Listed to UL1480 and UL2043
Specications
Model SD72 SD72W SD72WV
Size 8" (205mm) 8" (205mm) 8" (205mm)
Power Taps .25, .5, 1, 2, & 5 Watts
Sensitivity 97dB Average
Frequency
Response
Dispersion 105° (2kHz Octave Band, -6dB Points)
Diameter 8
Depth 2
1
/8" (205mm) 123/4" (206mm) 123/4" (206mm)
55Hz-19kHz (±5dB)
7
/8" (73mm)
Architect and Engineer Specications
Unit shall be Atlas Sound 8" loudspeaker Model SD72 utilizing line
matching transformer. It shall have a (10oz.) ceramic magnet and a
seamless cone. Frequency response range shall be 55Hz–8kHz (±5dB).
Sensitivity shall be 97dB 1W/1M. Voice coil shall be black anodized
aluminum to help dissipate heat, have an impedance of 8Ω and a
diameter of 1" (25mm). Transformer primary voltage shall be 25V/70.7V
with a frequency response range of 100Hz–10kHz (±1.5dB). Insertion
loss shall not exceed 1.5dB.
All models feature standard mounting holes to accommodate the
majority of Atlas Sound 8" baffles. All mounting screws are included
in the package.
Loudspeaker shall be safety listed to both UL1480 and UL2043
standards.
Applications
The SD72 is an aggressively priced, high quality speaker/transformer
package suitable for almost any paging or background application including
retail stores, restaurants, schools, and other institutional facilities.
General Description
The speaker used in the SD72 is the next generation of high
performance cone loudspeakers, very similar to the preceding
C-Series speakers. The similarity in the sonic qualities ensures that
contractors and designers who have worked with the Atlas Sound
C-Series in the past will know exactly what to expect when they use the
SD72. Model SD72 is a dual cone, 25 Watts 8" (205mm) loudspeaker
with a 10 oz. (260g) ceramic magnet. It includes a curvelinear, treated
paper cone for lower harmonic distortion. The loudspeaker is also
equipped with a full 1" diameter copper voice coil with a black anodized
aluminum former for better power dissipation. Model SD72 operates
within a frequency response range of 55Hz – 8kHz (±5dB) with a
sensitivity of 97dB and a dispersion angle of 105°. Package includes
factory installed 25V/70.7V line matching transformer with tap selections
ranging from .25 to 5 Watts. It mounts a wide variety of Atlas Sound
round and square baffles and enclosures to meet functional and
aesthetic application requirements.
©2018 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. ATS001450 RevC 9/18
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
AtlasSound.com
1/3
SD72 Polars (Normalized to Zero on Axis) (-6dB)
SD72 Harmonic Distortion
Magnitude (dB)
©2018 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. ATS001450 RevC 9/18
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
Frequency (Hz)
AtlasSound.com
2/3
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