Atlas Sound AH99-12T-BSG 12" 2-Way Stadium Horn System 90° x 90°
Atlas Sound AH99-12T-BSG 12" 2-Way Stadium Horn System 90° x 90° is backordered and will ship as soon as it is back in stock.
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Product Overview
The AtlasIED AH99-12T-BSG is a 12" 2-way stadium horn system designed for wide-coverage, directional sound distribution at football stadiums, sports arenas, baseball fields, convention centers, and auditoriums. Its constant directivity design delivers a broad 90° horizontal by 90° vertical pattern, making it the wide-dispersion choice for covering near-field seating and large open areas in an outdoor stadium sound system. A built-in 60-watt 70.7V transformer lets it drop directly onto a distributed 70V paging line, simplifying commercial PA system installation.
Product Description

The AH99-12T-BSG combines a 12" cast frame woofer with a concentrically mounted 1" exit compression driver coupled to a 90°H x 90°V high-frequency horn, reproducing 80 Hz to 15 kHz for full-range announcements, referee calls, and music in demanding venues. With 200 watts of power handling, 101 dB sensitivity, and 126 dB maximum output, it maintains speech intelligibility at the high sound pressure levels outdoor crowds require. The built-in, high-efficiency 70.7V transformer offers tap settings of 7.5, 15, 30, and 60 watts plus an 8-ohm bypass on the weather-resistant terminal block, so integrators can set per-speaker levels on a distributed line or run the horn from a low-impedance amplifier channel. Weatherized construction includes a multiple-screen configuration: a perforated aluminum screen over the horn mouth, a secondary screen forward of the high-frequency driver, and a third tightly perforated screen protecting the 12" woofer, plus a weep hole in the horn bell for condensation drainage and an IP54 rating. Installation hardware is included: a heavy-duty stainless steel C-style bracket mounts to most flat surfaces, and three pre-installed drop-forged eyebolts (two front, one rear pull-up) support suspended rigging with load-rated wire rope. Where longer throw is needed, pair this horn with the narrower-pattern AH54-15-BSG in the same series. Find companion amplifiers, transformers, and horns in the AtlasIED collection at Creation Networks.
Key Features
- 90° x 90° Constant Directivity Coverage — Wide, controlled 90° horizontal by 90° vertical pattern (2 kHz octave band) covers broad seating areas with fewer aiming compromises.
- Built-In 70.7V Transformer — Internal 60W high-efficiency transformer with 7.5, 15, 30, and 60 watt taps plus 8-ohm bypass connects directly to distributed 70V paging lines.
- 200W Power Handling — Handles 200 watts for high-output voice and music reproduction in large venues.
- Full-Range 2-Way Driver Complement — 12" cast frame woofer and 1" exit compression driver deliver 80 Hz to 15 kHz response with strong intelligibility.
- High Output — 101 dB sensitivity (1W/1M) and 126 dB maximum output at rated power reach across open-air venues.
- Weather-Resistant Construction — Triple-screen moisture protection, weep hole drainage, and IP54 rating support permanent outdoor stadium installation.
- Complete Mounting Hardware — Heavy-duty stainless steel C-style bracket and three pre-installed forged eyebolts cover both surface and suspended installation.
- Weatherized Wiring — Recessed weather-resistant terminal block on the underside of the loudspeaker speeds field hook-up.
Typical Applications
- Auditorium
- Multi-purpose room
Primary deployments are outdoor venues: football stadiums, sports arenas, baseball fields, and convention centers.
Technical Specifications
| Model | AH99-12T-BSG |
| Power Handling | 200 Watts |
| Power Taps | 7.5, 15, 30, and 60 Watts (70.7V) plus 8Ω bypass |
| Sensitivity | 101 dB SPL (1W/1M) |
| Maximum Output | 126 dB (rated power @ 1M) |
| Frequency Response | 80 Hz - 15 kHz |
| Dispersion | 90° x 90° (2 kHz octave band) |
| Drivers | 12" cast frame woofer (LF); 1" exit compression driver (HF) |
| Nominal Impedance | 8 ohms (transformer bypass) |
| Weather Rating | IP54 |
| Width | 22.06" (56.03 cm) |
| Weight | 87 lbs (39.46 kg) |
| Warranty | 60 months from date of purchase |
Frequently Asked Questions
Does the AH99-12T-BSG need an external transformer for 70V systems?
No. A 60-watt 70.7V transformer is built in, with taps at 7.5, 15, 30, and 60 watts accessible on the terminal block. An 8-ohm bypass connection is also provided for low-impedance amplifier channels.
Is this horn suitable for permanent outdoor installation?
Yes. It is IP54 rated with a triple-screen moisture barrier and a weep hole in the horn bell that allows internal condensation to evaporate, supporting year-round outdoor use.
How do I mount the AH99-12T-BSG?
A heavy-duty stainless steel C-style bracket is included for flat-surface mounting, and three pre-installed drop-forged eyebolts (two front, one rear) support suspension with load-rated wire rope. Follow the installation manual and local rigging codes for overhead suspension.
When should I choose the 90° x 90° pattern over a narrower horn?
Choose the 90° x 90° AH99-12T-BSG for wide near-to-mid throw coverage such as bleacher faces and open concourses. For long-throw coverage of distant seating, the AH54-15-BSG with its 50° x 40° pattern is the better fit; many stadium designs use both.
What amplifier should drive this speaker?
On a 70V distributed system, budget amplifier power for the tap settings used across the line. For 8-ohm direct operation, size the channel to the 200W power handling. Our team can help spec a matching AtlasIED amplifier.
What warranty applies?
AtlasIED covers the AH99-12T-BSG for 60 months from the date of purchase under its limited warranty.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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