Atlas Sound AH99-8T-BSG 8" 2-Way Stadium Horn Speaker System 90X90
Atlas Sound AH99-8T-BSG 8" 2-Way Stadium Horn Speaker System 90X90 is backordered and will ship as soon as it is back in stock.
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Product Overview
The Atlas Sound AH99-8T-BSG is an 8" two-way stadium horn speaker with wide 90° x 90° constant-directivity coverage, built for outdoor sports venue sound systems where intelligible voice and full-range music must reach large seating areas. It is engineered for stadium PA installation, arena paging, and other high-output commercial audio deployments. The weather-resistant IP54 construction supports permanent outdoor mounting, and the wide conical pattern makes it well suited to near-field and mid-throw seating coverage in distributed designs.
Product Description

The AH99-8T-BSG combines an 8" cast-frame woofer with a concentrically mounted 1" exit compression driver on a 90°H x 90°V high-frequency horn, holding pattern control through the 2 kHz octave band so system designers can predict coverage during the design phase. With 100 watts of power handling, 101 dB sensitivity (1W/1m), and 121 dB maximum output, a compact cluster covers bleachers, fields, and concourses with clear announcements and music. The built-in high-efficiency 70.7V transformer provides 7.5, 15, 30, and 60 watt taps along with an 8-ohm direct option, fitting both distributed 70V speaker lines and low-impedance amplifier channels common in commercial AV integration. Weather protection is layered: a perforated aluminum screen covers the horn mouth, a second screen guards the compression driver, and a third tightly perforated screen shields the woofer, while a weep hole on the rear bell lets condensation evaporate. The recessed bottom-mounted terminal block keeps field wiring protected from the elements. Three forged eyebolts support suspended rigging, and the included heavy-duty bracket handles surface-mount outdoor speaker installation on poles and structural steel. The battleship gray finish blends into stadium structures and broadcast catwalk environments. Pair it with the 65° x 65° AH94 model for long-throw zones, and source amplifiers and DSP for the full system from Creation Networks.
Key Features
- Wide 90° x 90° Constant-Directivity Coverage — Conical pattern control through the 2 kHz octave band simplifies seating coverage design with fewer aiming compromises.
- 100W Power Handling, 121 dB Maximum Output — Delivers the sound pressure levels outdoor sports venues require for intelligible paging and music.
- Built-In 60W 70.7V Transformer — Taps at 7.5, 15, 30, and 60 watts plus an 8-ohm bypass support distributed-line or direct amplifier connection.
- Multi-Screen Moisture Protection — Three perforated screens protect the horn mouth, HF driver, and woofer in permanent outdoor installations.
- Condensation Weep Hole — Rear-bell drainage allows internal condensation to evaporate, extending service life in humid climates.
- Recessed Weather-Resistant Terminal Block — Bottom-mounted connection point keeps terminations protected and speeds field wiring.
- Suspended or Surface Mounting — Three forged eyebolts and an included heavy-duty bracket cover both rigging methods.
- Battleship Gray Finish — Durable neutral finish suits stadium steel, catwalks, and exterior structures.
- 5-Year Limited Warranty — AtlasIED backs the speaker for 60 months from date of purchase.
Typical Applications
- Auditorium sound reinforcement and announcements
- House of worship outdoor and overflow audio coverage
- Government space paging and mass notification
- Multi-purpose room and field-house PA systems
Technical Specifications
| Power Taps | 7.5, 15, 30, and 60 Watts & 8Ω |
| Power Rating | 100 Watts |
| Sensitivity | 101 dB SPL (1W/1m) |
| Maximum Output | 121 dB (rated power @ 1m) |
| Frequency Response | 90 Hz – 15 kHz |
| Driver Type | 1" HF compression driver and 8" LF cast-frame woofer |
| Dispersion | 90° x 90° (2 kHz octave band) |
| Weather Rating | IP54 |
| Height | 21.88" (55.57 cm) |
| Width | 19.66" (49.93 cm) |
| Finish | Battleship Gray |
| Included Hardware | Heavy-duty mounting bracket, three forged eyebolts |
| Warranty | 60 months from date of purchase |
Frequently Asked Questions
Does the AH99-8T-BSG work on 70V distributed audio systems?
Yes. The built-in 70.7V transformer offers 7.5, 15, 30, and 60 watt taps, and an 8-ohm option allows direct connection to low-impedance amplifier channels.
Is it rated for permanent outdoor installation?
Yes. The speaker carries an IP54 rating with a triple-screen moisture-protection design and a rear weep hole for condensation, making it suitable for year-round outdoor stadium mounting.
How does the AH99 differ from the AH94 stadium horn?
The AH99-8T-BSG provides wide 90° x 90° coverage for near and mid-distance seating, while the AH94 model uses a narrower pattern for longer throw. Many stadium designs combine both.
What mounting hardware is included?
A heavy-duty surface-mount bracket and three forged eyebolts ship in the box, supporting flat-surface mounting or suspended rigging.
Should I use high-pass protection with this horn?
AtlasIED recommends protecting horn compression drivers from low-frequency energy; the TSD-HF11 protection unit is designed for that role in the amplifier chain.
Can Creation Networks help with stadium sound system design?
Yes. Our commercial AV team at creationnetworks.net assists with coverage modeling, amplifier sizing, and complete system integration.
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.
Nationwide Audiovisual Services, Design, Installation & Support
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From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
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