Atlas AH99-12ST Specifications

12" AH Series Stadium Horns 90° x 90°
Features
• Heavy duty mounting bracket (included) allows for easy installation to
most any fl at surface
• Three forged eyebolts included for suspended installation
• 200 watts power handling
• Constant Directivity design offers controlled coverage of 90°
horizontal by 90° vertical (2 kHz octave band)
• Driver compliment includes 12" cast frame woofer with a
concentrically mounted 1" exit compression driver coupled to a 90°
H x 90° 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 watts 70.7V transformer
• Effi ciency rating of 101 dB (1 W/1 M)
• Maximum output of 126 dB (Rated Power @ 1 M)
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
AH99-12ST
AH99-12ST
©2008 Atlas Sound SL2-3036 ATS002873 RevA 1/08
Applications
Atlas Sound model AH99-12ST 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 audito-
riums.
Weather resistant construction features of the AH99-12ST 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 12" cast frame woofer.
Installation
A heavy-duty stainless steel "C" style mounting bracket is included with
the AH99-12ST 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 AH948-ST includes a weather resistant 7 pole terminal block con-
nector on the underside of the speaker for ease of hook-up. This ter-
minal block includes connection points for internal 70.7V transformer
with taps settings of 7.5, 15, 30, and 60 watts and 8 Ω connection for
transformer bypass.
AtlasSound.com
AH99-12ST
1/4