8" PREASSEMBLED SPEAKER PACKAGE

SD72

 

 

 

SD72

 

 

(Front View)

 

(Rear View)

 

 

 

 

 

 

SD72 SPECIFICATIONS

 

 

Size

 

8" (205mm)

 

 

 

 

 

Power Handling

 

25 Watts Peak, 15 Watts RMS

 

 

Sensitivity

 

97dB Average

 

 

Impedance

 

8 Ohms Nominal

 

 

Frequency Response

 

45Hz-19kHz Nominal, 55Hz-8kHz ±5dB

 

 

Dispersion

 

105° (2kHz Octave Band, -6dB Points)

 

 

Diameter & Depth

 

8.125” (205mm) Dia. & 2.875” (73mm) Deep

 

 

Mounting Dimensions

 

7.625” (194mm) Bolt Circle

 

 

Cone Material

 

Treated Paper

 

 

Surround Material & Damping

 

Damped Self Edge

 

 

Flux Density

 

10,600 Gauss, 1.06 Tesla

 

 

Magnet Weight

 

Nominal, 10oz. (260g)

 

 

Basket Material

 

Stamped Plated 20ga. CRS

 

 

VC Diameter

 

1" (25mm)

 

 

VC Material

 

Copper

 

 

VC Former Material

 

Black Anodized Aluminum

 

 

VC Winding Width

 

.225"

 

 

Top Plate Thickness

 

.239"

 

 

Weight

 

32oz. (908g)

 

 

THIELE-SMALL PARAMETERS

 

 

 

 

Pe

 

15 watts

 

 

Fs

 

12Hz

 

 

Xmax

 

.03"

 

 

Resistance

 

7.3 ohms

 

 

Qts

 

0.8

 

 

Qes

 

0.95

 

 

Qms

 

5.2

 

 

BL

 

7.9 N/A

 

 

Efficiency

 

1.90%

 

 

Vas

 

.32 (ft3)

 

 

Sd

 

33.2 (in2)

 

 

Le@1kHz

 

.36mH

 

 

Mms

 

.39oz.

 

 

Cms

 

.024 in./lb.

 

 

Transformer Specifications

 

 

 

 

Frequency Response

 

100Hz-10kHz (±1.5dB)

 

 

Primary Taps (Watts)

 

.25, .5, 1, 2, & 5

 

 

Secondary Impedance (ohms)

 

8 Ohms

 

 

Maximum Insertion Loss

 

1.5dB

 

 

Primary Termination

 

6" (152mm) Com. Lead Color Coded

 

 

Core Size

 

12" X 58" (16 X 16mm)

 

 

Power Rating (Watts)

 

5

 

 

 

 

 

 

FEATURES

10oz dual cone speaker provides familiar response & performance

Quality 5 watt-dual voltage transformer

Individually packaged for stocking & ordering convenience

APPLICATIONS

The SD72 is an aggressively priced, high quality speaker/transformer package suitable for most any paging or background application includ- ing retail stores, restaurants, schools and other institutional facilities.

GENERAL DESCRIPTION

The speaker used in the SD72 is the next generation of Atlas high per- formance 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 watt 8" (205mm) loudspeaker with a 10oz. (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 45Hz to 19kHz (nominal) with a sensitivity of 97dB and a dispersion angle of 105°. Package includes factory installed 25/70.7V 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 aes- thetic application requirements.

ARCHITECT & ENGINEER SPECIFICATIONS

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 45Hz-19kHz (nominal). Sensitivity shall be 97dB 1W/1M. Voice coil shall be black anodized aluminum to help dissipate heat, have an impedance of 8 ohms 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.

One

Specifications subject to change without notice

1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.

AtlasSound.com

TELEPHONE: (800) 876-3333 / FAX (800) 765-3435

2.39

© 2002 Atlas Sound

Printed in U.S.A.

001102

ATS001450 RevA 11/02

SL1-2021

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Atlas Sound specifications SD72 Specifications, Features, Applications, General Description

SD72 specifications

The Atlas Sound SD72 is a powerful and versatile sound distribution amplifier that has gained recognition in various professional audio environments. Known for its reliability and flexibility, the SD72 is ideal for applications such as public address systems, commercial sound installations, and performance venues. Its ability to accommodate multiple input sources while delivering high-quality audio makes it a popular choice among audio engineers and installers.

One of the standout features of the SD72 is its ability to support a range of input signals. It boasts multiple balanced and unbalanced input options, allowing users to connect various sources seamlessly. This makes it perfect for environments where numerous audio devices need to be integrated, such as schools, auditoriums, and conference centers.

The SD72 is equipped with a robust output section that provides multiple zones of audio distribution. This capability allows for independent volume control in different areas, enabling personalized sound experiences. Each output can be fine-tuned to ensure optimal sound quality, which is particularly important in venues where sound reinforcement is critical.

Another key characteristic of the Atlas Sound SD72 is its built-in signal processing technology. This includes features such as a feedback eliminator, equalization options, and dynamic range control. These technologies work together to minimize feedback and deliver a crisp, clear audio experience. Audio professionals appreciate the reliability of the SD72, especially in live sound applications where inconsistencies can lead to significant issues.

In addition to its technical features, the SD72 is designed with user convenience in mind. The unit features an intuitive front panel with easy-to-read LED indicators, making it simple to monitor levels and make adjustments on the fly. The rack-mountable design further contributes to its versatility, allowing for straightforward installation in various setups.

In summary, the Atlas Sound SD72 is a sophisticated sound distribution amplifier that stands out due to its multiple input options, advanced signal processing technologies, and user-friendly design. Its capacity to deliver high-quality audio across multiple zones makes it an ideal solution for a wide array of professional sound applications, ensuring that audiences receive the best audio experience possible.