Atlas 8"" 2-Way Staium Horn System AH66-8ST Specification Sheet
AH66-8ST
8" 2-Way Stadium Horn System 65° x 65°
Applications
Atlas Sound model AH66-8ST stadium horn is ideal for directional sound
distribution where full range reproduction, maximum intelligibility, and
high sound pressure levels are required. Applications include football
stadiums, sports arenas, baseball fields, convention centers, and auditoriums.
Weather resistant construction features of the AH66-8ST include a
multiple 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 8” cast frame
woofer.
Installation
A heavy-duty stainless steel "C" style mounting bracket is included with
the AH66-8ST to allow easy mounting to most any flat surface. Three
drop forged 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 AH66-ST includes a weather resistant 7 pole terminal block connector on the underside of the speaker for ease of hook-up. This terminal
block includes connection points for internal 70.7V transformer with taps
settings of 7.5, 15, 30, and 60 watts and 8
bypass.
AH66-8ST
Ω connection for transformer
Features
• Heavy duty mounting bracket (included) allows for easy installation to
most any fl at surface
• Three forged eyebolts also included for suspended installation
• 100 watts power handling
• Constant directivity design offers controlled coverage of 65°
horizontal by 65° vertical (2 kHz octave band)
• Driver compliment includes 8” cast frame woofer with a
concentrically mounted 1” exit compression driver coupled to a
65° H x 65° V HF horn
• Easy, weather resistant connection via a convenient recessed
terminal block located on the bottom of the loudspeaker
• Includes a built-in, high effi ciency 60 watt 70.7V transformer
• Effi ciency rating of 100 dB (1 W / 1 M)
• Maximum output of 120 dB (Rated Power @ 1 M)
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
©2008 Atlas Sound SL2-3031 ATS002869 RevA 1/08
AH66-8ST
AtlasSound.com
1/4
Technical Specifications
Power Rating: 100 watts
Sensitivity 1 W / 1 M: 100 dB SPL (70 Hz to 17 kHz 1⁄3 octave bands)
Frequency Responce: 90 Hz - 15 kHz (±5 dB)
Dispersion: 65˚ x 65˚
Impedance: 8 Ω Nominal
Transformer Taps: 7.5, 15, 30, and 60 watts
Height: 20.95” (532.13 mm)
Width: 17.91” (454.91 mm)
Depth: 20.98” (532.89 mm)
Shipping Weight: 102 lbs (46.27 kg)
Driver Type: 1" HF & 8" LF
Architect & Engineer Specifications
Loudspeaker shall be Atlas Sound Model AH66-8ST or approved equal.
The loudspeaker system shall be a horn-loaded, 2-way design with an 8”
inch polycone woofer.
The loudspeaker system shall include an 8”, horn loaded, cast frame
woofer 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 shall have a crossover frequency
of 1.8 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 100 watts RMS based on EIA Standard RS-426B.*
Enclosure shall be UV-resistant, low pressure injection molded fiber
glass and shall include a 3 stage multiple mesh filter system for weather
and rodent resistance: to include a 20-gauge perforated aluminum
screen on front mouth assembly, a 100 x 100 weave stainless steel
mesh between HF horn and HF driver and a 100 x 100 weave stainless
steel mesh over 8” woofer. The loudspeaker shall include a stamped and
formed, 2 MM stainless steel powder coated mounting bracket assem
bly for surface mounting and three M8 drop forged eyebolts for suspen
sion mounting two at the front and one at the rear to allow the speaker
system to be suspended and aimed using rated wire rope.
1
Sensitivity shall be 100 dB SPL (90 Hz to 15 kHz in
⁄3 octave bands)
measured at a distance of one meter on axis with a one watt input half
space (2.83V).
Overall frequency response shall be 90 Hz to 15 kHz (±5 dB).
The input section located on the bottom rear of the loudspeaker shall be
via 7 position screw down terminal strip internally configured to allow
input to an internally mounted 70.7V transformer with 7.5, 15, 30, & 60
watt taps and a by-pass jumper direct coupled to the Speaker for nomi
Ω operation. The system connections shall be protected from the
nal 8
elements by a screw affixed weather resistant cover.
Dimensions shall be: Height: 20.95" (532.13 mm)
Width: 17.91” (454.91 mm)
Depth: 20.98” (532.89 mm)
Weight: 102 lbs (46.27 kg)
* EIA test spectrum is applied for eight hours.
(This procedure provides a rigorous test of both thermal and
mechanical failure modes.)
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17.91"
(454.91 mm)
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
©2008 Atlas Sound SL2-3031 ATS002869 RevA 1/08
20.98"
(532.89 mm)
12.03"
(305.56 mm)
AtlasSound.com
20.95"
(532.89 mm)
2/4
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