Atlas AH5040S User manual

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 1/4
©2008 Atlas Sound SL2-2048 ATS001850 RevE 1/08
Features
• Effi ciency rating of 104 dB (1 W/1 M)
• 250 watts power handling
• Maximum output of 128 dB (Rated Power @ 1 M)
• Constant directivity design offers controlled coverage of 50˚
horizontal by 40˚ vertical (2 kHz octave band)
• Excellent low frequency response down to 80 Hz (–5 dB) provides
bass you can feel
• Driver compliment includes a 15" cast frame woofer with a
concentrically mounted 1" exit compression driver coupled to a
50˚ H x 40˚ V HF horn
• Full range frequency response of 75 Hz – 17 kHz (± 5 dB)
• Easy, weather resistant connection via parallel 4 pole terminal strip
• 8 Ω nominal system impedance (70.7V operation via optional
Atlas Sound model AF140 transformer)
• Heavy duty stainless steel mounting bracket (included) allows for
easy installation to most any fl at surface
• Three forged eyebolts also included for suspended installation
Applications
Atlas Sound model AH5040S stadium horn is ideal for directional
sound distribution where full range reproduction, maximum intellig ibility,
and high sound pressure levels are required. Applications include foot-
ball stadiums, sports arenas, baseball fields, convention centers, and
auditoriums.
Weather resistant construction features of the AH5040S include a mul-
tiple screen configuration to prevent moisture from damaging internal
components.
A perforated aluminum screen covers the large horn mouth, a secondary
screen is in place forward of the high frequency driver, and a third tightly
perforated screen protects the 15" cast frame woofer.
Installation
A heavy-duty stainless steel "C" style mounting bracket is included with
the AH5040S to allow easy mounting to most any flat surface. Three
drop forge eyebolts are also pre-installed (2-front of horn plus 1-rear for
"pull-up") for suspension mounting via load rated wire rope. (Use caution
when suspending any object overhead. Refer to installation manual for
more details).
The AH5040S includes a parallel wired, weather resistant 4 pole ter-
minal block connector on the underside of the device for easy hook-up
and daisy chain wiring to other AH5040S’s. If 70.7V/100V operation
is required the optional Atlas Sound AF140 autoformer may be used.
NOTE: Due to the full range operation capabilities of the AH5040S
70.V/100V operation although possible, is discouraged. Better frequency
response and amplifier dampening factor can be realized by using large
gauge (#10 to #12) home runs and series/parallel hook-up wiring at
the head end location with direct coupled, low impedance amplifiers.
Generally speaking, this improvement of frequency response and ampli-
fier dampening factor is worth the sacrifice of line loss over distance
- especially if transformer insertion loss at the loudspeaker location is
considered.
AH5040S
AH5040S
15" 2-Way Stadium Horn System 50° x 40°
AH5040S

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 2/4
©2008 Atlas Sound SL2-2048 ATS001850 RevE 1/08
Technical Specifications
Power Rating: 250 watts (45V) RMS
350 watts (53V) Peak
Sensitivity (1 W / 1 M): 104 dB SPL (70 Hz – 17 kHz 1⁄3 octave
bands)
Frequency Response: 75 Hz - 17 kHz (±5 dB)
Dispersion: 50˚ x 40˚
Impedance: 8 Ω Nominal
Minimum Impedance: 5.6 Ω @ 9000 Hz Nominal -6 dB Minimum
Height: 23.75" (603.25 mm)
Width: 21.41" (543.81 mm)
Depth: 30.07" (763.78 mm)
Shipping Weight: 125 lbs (56.7 kg)
Driver Type: 1" HF & 15" LF
Architect & Engineer Specifications
Loudspeaker shall be Atlas Sound Model AH5040S or approved equal.
Loudspeaker shall be a 2-way design incorporating an environment-resis-
tant housing.
Loudspeaker shall include a 15", horn loaded, cast frame woofer housed
in a 2296 cubic inch (1.3 feet3) enclosure and an integral, concentrically
mounted 1” exit compression driver coupled to a constant directivity
high frequency horn. The three pole (18 dB/octave) dividing network
crossover frequency shall be 1.4 kHz. The dividing network shall include
a poly switch protection circuit for the high-frequency component.
The loudspeaker system shall be capable of providing a sound dispersion
angle of 50˚ horizontal by 40˚ vertical in the 2 kHz octave band.
Rated power shall be 250 watts based on EIA Standard RS-426B*
Enclosure shall be UV-resistant, steel reinforced, low pressure injection
molded fiberglass and shall include a 3 stage multiple mesh filter system
for weather and rodent resistance:
A. Large 20-gauge perforated aluminum screen on front mouth
assembly.
B. 100 x 100 weave stainless steel mesh between HF horn and
HF driver.
C. 100 x 100 weave stainless steel mesh over 15" woofer.
Sensitivity shall be 104 dB SPL (75 Hz to 17 kHz 1⁄3 octave bands) mea-
sured at a distance of one meter on axis with a one watt input.
Overall frequency response shall be 75 Hz to 17 kHz ( ±5 dB).
The loudspeaker shall include a stamped and formed, 12-gauge stainless
steel mounting bracket assembly for surface mounting and three M8
drop forged eyebolts for suspension mounting.
The input section located on the bottom rear of the loudspeaker shall
include a parallel wired 4 pole terminal block connector (1+ & 1- to input,
2+ & 2- provided as a through connection)
Nominal impedance shall be 8 Ω.
Dimensions shall be: Height: 23.75" (603.25 mm)
Width: 21.41" (543.81 mm)
Depth: 30.07" (763.78 mm)
Weight: 125 lbs (56.7 kg)
* EIA test spectrum is applied for eight hours.
(This procedure provides a rigorous test of both thermal and
mechanical failure modes.)
(21.41)
23.75
14.63
30.07
28.75
28.75"
(730.25 mm)
21.41"
(543.81 mm)
20.07"
(763.78 mm)
23.75"
(603.25 mm)
14.63"
(371.6 mm)

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 3/4
©2008 Atlas Sound SL2-2048 ATS001850 RevE 1/08
AH5040S Horizontal Beamwidth (-6 dB)
AH5040S Vertical Beamwidth (-6 dB)
AH5040S Frequency Response

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 4/4
©2008 Atlas Sound SL2-2048 ATS001850 RevE 1/08
AH5040S Impedance (ohms) vs. Frequency
AH5040S Horizontal Polars (Normalized to Zero on Axis) (-6 dB)
AH5040S Vertical Polars (Normalized to Zero on Axis) (-6 dB)