Atlas C10A Series User manual

© 2006 Atlas Sound LP Printed in U.S.A. 00706 ATS002420 RevA 07/06 SL1-1542
SPKR./
XFMR.
MODELS
INCLUDES
XFMR. TRANSFORMER SPECIFICATIONS
PRIMARY
VOLTAGE XFMR. FREQUENCY RESPONSE PRIMARY TAPS
(WATTS)
SECONDARY
IMPEDANCE INSERTION LOSS CORE SIZE POWER RATING
C10AT25 LT-25 25V 100Hz - 10kHz, ±1.5dB .5, 1, 2 & 5 8Ω1.5dB 1⁄2" x 5⁄8" (13 x 16mm) 5W
C10AT70 LT-70 70.7V 100Hz - 10kHz, ±1.5dB .5, 1, 2, & 5 8Ω1.5dB 1⁄2" x 5⁄8" (13 x 16mm) 5W
C10AT72 LT-72 25/70.7V 100Hz - 10kHz, ±1.5dB .5, 1, 2 & 4 8Ω1.5dB 1⁄2" x 5⁄8" (13 x 16mm) 4W
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone] /FAX [phone] AtlasSound.com
Specifications subject to change without notice
71
ONE
SPECIFICATIONS
Size: 8" (203mm)
Power Handling: 25 Watts Peak, 15 Watts RMS
Sensitivity: 97dB Peak, 94dB Average
Impedance: 8 Ohms Nominal, 8 Ohms Minimum
Frequency Response: 45Hz-19kHz Nominal, 85Hz-8kHz +5dB
Dispersion: 105˚ (2 kHz 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, 10 oz. (260g)
Basket Material: Stamped Plated 20 ga. CRS
VC Diameter: 1" (25mm)
VC Material: Copper
VC Former Material: Black Anodized Aluminum
VC Winding Width: .225"
Top Plate Thickness: .239"
Weight: 32 oz. (908g)
8” DUAL CONE LOUDSPEAKER
AVAILABLE WITH TRANSFORMER
C10A
Series
C10A
FEATURES
• Acoustically Proven, General Purpose 25-Watt Loudspeaker
• Includes Choice of Factory-Installed Line-Matching Transformer
• Ideal for Multi-Purpose Commercial, Industrial and Institutional Use
• Mounts a Wide Selection of Atlas Sound Baffles
APPLICATIONS
Utilize Atlas Sound’s Model C10A, 8" dual-cone loudspeaker for
dependable voice, music and signal reproduction in commercial,
industrial and institutional communication systems. It is the industry
standard for performance and service reliability in general purpose
applications. Model includes a choice of eight factory-installed line
matching transformers to meet a wide range of project requirements.
(For more information on Atlas Sound transformers, see sales sheet
#SL1-1369.)
GENERAL DESCRIPTION
Model C10A is a dual cone, 25W 8" (203mm) 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 C10A operates within a frequency response range of
45Hz to 19kHz with a sensitivity of 97dB and a dispersion angle
of 105˚.
It mounts a wide variety of Atlas Sound round and square baffles and
enclosures to meet functional and aesthetic application requirements.
THIELE-SMALL PARAMETERS
Pe: 15 Watts
Fs: 125Hz
Xmax: .05"
Resistance: 7.3 Ohms
Qts: .80
Qes: .95
Qms: 5.2
BL: 7.9 N/A
Efficiency: 1.9%
Vas: .32 (ft3)
Sd: 33.2 (in2)
Le@1kHz: .36 mH
Mms: .39 oz.
Cms: .024 in./lb.

© 2006 Atlas Sound LP Printed in U.S.A. 00706 ATS002420 RevA 07/06 SL1-1542
Specifications subject to change without notice
1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone] /FAX [phone] AtlasSound.com
C10A: Frequency Response C10A: Impedance
C10A : Fundamental vs 2nd & 3rd Harmonic (Raised 20dB)@ 1Watt C10A: Frequency Response Overlay at 0, 15, 30 & 45 degrees
Octave Bands Normalized to Zero On Axis
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
ARCHITECT & ENGINEER SPECIFICATIONS
Unit shall be Atlas Sound 8" loudspeaker Model ______ or
loudspeaker/transformer combination Model ______ (utilizing line-
matching transformer Model ______). It shall have a (10 oz.) ceramic
magnet and a seamless cone. Frequency response range shall be
_____________.
Sensitivity shall be _______. 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 ____
with a frequency response range of _______. Insertion loss shall not
exceed ____.