Assessments - 2, GPA: 4.5
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Cone Material: Treated Paper Surround Material & Damping: Self Edge with Dampener Flux Density: 10,600 Gauss, 1.06 Tesla Magnet Weight: Nominal, 10 oz. (260g) Basket Material: 20 ga. Stamped Steel Voice Coil Diameter: 1" (25mm) Voice Coil Material: Copper Voice Coil Former Material: Black Anodized Aluminum Voice Coil Winding Width: .265 (7mm) Top Plate Thickness: .239 (6mm) Weight: 2.4 lbs. (1060g) Diameter & Depth Less Xfmr: 81.8" (206mm) Dia. & 27.8" (73mm) Deep THIELE-SMALL PARAMETERS Pe: 16 Watts Qes: .556 Sd: 33.1 In.3 Fs: 105 Hz Qms: 6.58 Le@1kHz: .74 mH Xmax: .05 in. BL: 8.9 N/A Mms: .369 oz Resistance: 6.4 ohms Efficiency: 2.9% Cms: .039 in./lb. Qts: .513 Vas: .507 Ft.3 FEATURES • Industry Standard 8" (203mm) Coaxial, 16-Watt, Loudspeaker • Offers Proven Performance with Wide Frequency Response • Post-Mounted Tweeter Adds Strength and a More Attractive Appearance • Ideal for Multi-Purpose Commercial, Industrial, and Institutional Use APPLICATIONS Use Atlas Sound 8" (203mm) dia., multi-purpose, coaxial loudspeaker Model C803A for voice transmission, music and signal reproduction in high-quality commercial, industrial and institutional applications. GENERAL DESCRIPTION Model C803A. High-quality, 16-watt Model C803A utilizes a post- mounted tweeter which adds strength to the assembly and provides an attractive appearance. This coaxial loudspeaker features a 70 Hz 15.5 kHz, ±5dB frequency response and a broad, uniform dispersion pattern of 120°. Such provisions allow for highly intelligible sound reproduction and better distribution for high-quality sound systems. The C803A combines a full-size 8" (203mm) dia. low-frequency reproducer and a 3" (76mm) high-frequency reproducer. The two sections are coupled via a built-in crossover network. The woofer has a 10 oz. (260g) ceramic magnet; the tweeter has a 2.35 oz. (67g) ceramic magnet and the unit has a peak sensitivity of 98dB (at 1 watt, 1 meter). The loudspeaker is available with six different factory-installed line- matching transformers to meet a variety of project requirements (see chart below). Model C803A mounts a wide variety of Atlas Sound baffles and enclosures, with the optimum sealed enclosure size being .36 cu. ft. ONE MODEL COMBINATIONS / TRANSFORMER SPECIFICATIONS SPKR. / XFMR. PRIMARY COMBINATIONS XFMR. PRIMARY XFMR. FREQUENCY TAPS SECONDARY INSERTION CORE POWER AVAILABLE VOLTAGE RESPONSE (WATTS) IMPEDANCE LOSS (MAX) SIZE RATING C803AT25 LT-25 25 V 100 Hz - 10 kHz, ±1.5dB .5, 1, 2 & 5 8 Ohms 1.5dB 1.2" x 5.8" (16 x 16mm) 5 Watts C803AT47 HT-47 70.7 V 60 Hz - 12 kHz, ±1.0dB .5, 1, 2 & 4 8 Ohms 1.0dB 5.8" x 5.8" (16 x 16mm) 4 Watts C803AT70 LT-70 70.7 V 100 Hz - 10 kHz, ±1.5dB .5, 1, 2 & 5 8 Ohms 1.5dB 1.2" x 5.8" (16 x 16mm) 5 Watts C803AT72 LT-72 25/70 V 100 Hz - 10 kHz, ±1.5dB .5, 1, 2 & 4 8 Ohms 1.5dB 1.2" x 5.8" (16 x 16mm) 4 Watts C803AT82 HT-82 25 V 50 Hz - 15 kHz, ±1.0dB 1, 2, 4, 8 4 & 8 Ohms 0.6dB 1" x 3.4" (25 x 19 mm) 8 Watts C803AT87 HT-87 70.7 V 50 Hz - 15 kHz, ±1.0dB 1, 2, 4, 8 4 & 8 Ohms 0.6dB 1" x 3.4" (25 x 19mm) 8 Watts For additional information on Atlas Sound transformer models, refer to technical literature #SL1-1369. Specifications subject to change without notice 1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 876-3333 / FAX (800) 765-3435 © 2001 Atlas Sound LP Printed in U.S.A. 000501 SL1-1037 57 ARCHITECT & ENGINEER SPECIFICATIONS Unit shall be Atlas Sound 8" dia. loudspeaker Model C803A or loudspeaker/ transformer combination Model ______ (utilizing Atlas Sound line-matching transformer Model _____). The low-frequency reproducer cone shall be a full 8" (203mm) in diameter and the high frequency reproducer cone shall be 3" (76mm) in diameter. The woofer shall have a 10 oz. (260g) ceramic magnet; the tweeter shall have a 2.35 oz. (67g) ceramic magnet. The two reproducer sections shall be coupled through a built-in crossover network. The crossover frequency shall be at 2800 Hz. Frequency response range shall be 70 Hz to 15.5 kHz, ±5dB. Sensitivity shall be 98dB at 1 watt, 1 meter. Voice coil impedance shall be 8 ohms. Low frequency voice coil diameter shall be 1" (25mm) and operate in a magnet field of at least 10,600 gauss. Transformer primary voltage shall be _____ (25V, 70.7V, 70/25) with a frequency response range of _______ and power taps at ____ watts. Insertion loss shall not exceed ____dB. The maximum depth of the loudspeaker shall not exceed 27.8" (73mm). C803A: Frequency Response C803A: Impedance C803A: Fundamental vs 2nd & 3rd Harmonics (Raised 20dB) @ 1 watt C803A Frequency ResponseOverlay at 0, 15, 30 & 45 degrees Octave Bands Normalized to Zero On Axis Specifications subject to change without notice 1601 JACK MCKAY BLVD. / ENNIS, TEXAS 75119 U.S.A. / TELEPHONE: (800) 876-3333 / FAX (800) 765-3435 © 2001 Atlas Sound LP Printed in U.S.A. 000501 SL1-1037 ...