Atlas SD72WV User manual

Specifications subject to change without notice
© 2002 Atlas Sound Printed in U.S.A. 001102 ATS001452 RevA 11/02 SL1-2023
2.43
One
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone] / FAX [phone] AtlasSound.com
8" PREASSEMBLED SPEAKER PACKAGE
/ BAFFLE AND VOLUME CONTROL SD72WV
SD72WV 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 125Hz
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 .36 mH
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
Maximum Insertion Loss 1.5dB
Primary Termination 6"(152mm) Com. Lead Color Coded
Core Size 1⁄2"X 5⁄8"(16 X 16mm)
Power Rating (Watts) 5
FEATURES
• 10oz speaker provides familiar response & performance
• Quality 5 watt-dual voltage transformer
• Attractive CRS white powder coat baffle with center mounted
volume control
• Control loudspeaker volume in individual office and zone areas
• Incorporate or remove volume control knob to suit
application requirements
• Individually packaged for stocking & ordering convenience
APPLICATIONS
The SD72WV is an aggressively priced, high quality speaker/baffle
transformer package with center mounted volume control suitable for
most any paging or background application including retail stores,
restaurants, schools and other institutional facilities. Easy-to-adjust
knob style potentiometer sets output level so that audio may be heard
optimally in work centers with fluctuating ambient noise, including multi-
task areas, individual offices, departments and conference areas.
Models feature a baffle mounted volume control knob, which can be
removed to protect sound level settings from tampering and/or for aes-
thetic preference.
GENERAL DESCRIPTION
The speaker used in the SD72WV is the next generation of Atlas 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 SD72WV.
Model SD72WV 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 SD72WV operates within a
frequency response range of 45Hz-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. The SD72WV includes a factory installed CRS
baffle with concealed loudspeaker mounting studs and includes screw
mount hardware. The SD72WV baffle features standard mounting holes
to accommodate the majority of Atlas Sound 8" tile bridges, mounting
rings and enclosures. When specifying mounting hardware be advised
that the dimensions of the SD72WV baffle match the Atlas Sound
Model 62-8. The baffle finish is white powder coat epoxy. The baffle
mounted volume control has a 5 watt audio rating and is factory wired
to the voice coil. Units are shipped assembled, ready for installation.
ARCHITECT & ENGINEER SPECIFICATIONS
Unit shall be Atlas Sound 8" loudspeaker Model SD72WV utilizing line
matching transformer and white CRS baffle. 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 imped-
ance of 8 ohms and a diameter of 1" (25mm). Transformer primary volt-
age shall be 25V/70.7V with a frequency response range of 100Hz-
10kHz. Insertion loss shall not exceed 1.5dB. Unit shall include factory
installed CRS baffle with center mounted volume control. Volume control
knob may be removed to allow only a screwdriver adjustment. Baffle shall
include welded speaker mounting studs and all necessary hardware to
match the baffle to associated optional hardware. Baffle overall diameter
shall not exceed 123⁄4" (324mm). Baffle shall be finished in white powder
coat epoxy.
SD72WV
(Front View) (Rear View)

Specifications subject to change without notice
© 2002 Atlas Sound Printed in U.S.A. 001102 ATS001452 RevA 11/02 SL1-2023
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone] / FAX [phone] AtlasSound.com
Fundamental
Fundamental vs. 2nd & 3rd Harmonics
(Transformer Bypassed)
SD72WV Impedance
(Transformer Bypassed)
Frequency Hz
SD72WV Frequency Response
(Transformer Bypassed)
Frequency Hz
dB Pa
Ohms
dB Pa
Frequency Hz
2nd Harmonic
3rd Harmonic
* (C) Speaker mounting stud pattern.
** (D) Baffle mounting hole pattern.
▲EQ81 tile bridge works only with 96-8 Series enclosures.
Side ViewFront View
SD72WV BAFFLE INFORMATION
DIMENSIONS MOUNTS OPTIONAL
MODEL DIA. (A) PROJECTS (B) (C)* (D)** ENCLOSURE (OR) MTG. RING TILEBRIDGE
SD72WV 123⁄4"1⁄4"7
5⁄8"11 1⁄4"
(EZ )95-8 Series, T95-8 Series, 75-8(E1)(E2), 81-8R(S)
(324mm) (6mm) (194mm) (286mm) EZ96-8, CS95-8(NS), 76-8(E1)(E2),
199-8, Q408, 96-8 Series▲P77-8, P78-8 EQ81s▲
SD72WV OCTAVE BAND POLARS