Atlas AH6565S User manual

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 1/4
©2008 Atlas Sound SL2-2081 ATS002223 RevC 1/08
Features
• Effi ciency rating of 102 dB (1 W / 1 M)
• 250 watts power handling
• Maximum output of 126 dB (Rated Power @ 1 M)
• Constant Directivity design offers controlled coverage of
65˚ H by 65˚ V (2 kHz octave band)
• Excellent low frequency response provides bass you can feel
• Driver complement includes a 15” cast frame woofer with a
concentrically mounted 1” exit compression driver coupled to a
65˚ H x 65˚ V HF horn
• Full range frequency response of 75 Hz – 14.5 kHz (±5 dB)
• Easy, weather resistant connection via 4-pole terminal block
connector
• 8 Ω nominal system impedance (70.7V / 100V 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 AH6565S stadium horn, with its square coverage pat-
tern, is ideal for down firing applications like convention centers where
full range reproduction, maximum intelligibility, and high sound pressure
levels are required. Other applications include football stadiums, sports
arenas, baseball fields, convention centers, and auditoriums.
Weather resistant construction features of the AH6565S 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 AH6565S to allow easy mounting to almost 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 aircraft cable. (Use cau-
tion when suspending any object overhead. Refer to the installation
manual for more details.)
The AH6565S includes a 4 pole terminal block connector on the underside
of the device for easy hook-up and daisy chain wiring to other AH6565S.
If 70.7V/100V operation is required the optional Atlas Sound AF140 auto-
former may be used.
NOTE: Due to the full range operation capabilities of the AH6565S,
70.7/100V operation is possible, but 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.
AH6565S
AH6565S
15” 2-way Stadium Horn System 65° x 65°
AH6565S

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 2/4
©2008 Atlas Sound SL2-2081 ATS002223 RevC 1/08
23.75
20.25
14.63
30.08
21.41
Technical Specifications
Power Rating: 250 watts (45V) RMS
Sensitivity 1W1M: 104 dB SPL (70 Hz – 17 kHz 1⁄3 octavebands)
Frequency Response: 75 Hz - 14.5 kHz (±5 dB)
Dispersion: 65˚ x 65˚
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: 30.08" (764.03 mm)
Shipping Weight: 125 lbs (56.7 kg)
Driver Type: 1" HF and 15" LF
Architect & Engineer Specifications
Loudspeaker shall be Atlas Sound Model AH6565S 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 in3 (1.3 cubic feet) 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 cross-
over 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 65˚ horizontal by 65˚ 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 102 dB SPL (70 Hz – 14.5 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 – 14.5 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 4 pole terminal block connector.
Nominal impedance shall be 8 Ω.
Dimensions shall be: Height 23.75" (603.25 mm)
Width 21.41" (543.81 mm)
Depth 30.08" (764.03 mm)
Weight 125 lbs (56.7 kg)
* EIA test spectrum is applied for eight hours. (This procedure pro-
vides a rigorous test of both thermal and mechanical failure modes.)
30.08"
(764.03) mm
20.25"
(514.35 mm)
23.75"
(603.25 mm)
14.21"
(360.93 mm)
21.41"
(543.81 mm)

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 3/4
©2008 Atlas Sound SL2-2081 ATS002223 RevC 1/08
AH6565S Horizontal Beamwidth ( -6 dB)
AH6565S Vertical Beamwidth ( -6 dB)
AH6565S Frequency Response

1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: [phone]
FAX [phone] AtlasSound.com 4/4
©2008 Atlas Sound SL2-2081 ATS002223 RevC 1/08
AH6565S Impedance (ohms) vs. Frequency
AH6565S Horizontal Polars (Normalized to Zero On Axis) ( -6 dB)
AH6565S Vertical Polars (Normalized to Zero On Axis) ( -6 dB)