The AtlasIED ALA20T-B is a professional column line array speaker designed to deliver clear speech intelligibility, controlled sound coverage, and high-quality audio reproduction in commercial and professional sound systems. Featuring twenty 3-inch full-range drivers and six 3/4-inch high-frequency tweeters, the ALA20T-B combines powerful performance with a slim, contemporary design.
Designed for applications where precise sound distribution is essential, the ALA20T-B provides 135° horizontal coverage and 40° vertical dispersion. This controlled coverage pattern helps direct sound toward the listening area while reducing unnecessary sound energy directed toward ceilings and floors.
With 500 watts RMS power handling at 8 ohms and selectable 70.7V transformer taps, the AtlasIED ALA20T-B supports both low-impedance and distributed audio system applications.
Its durable extruded aluminum enclosure and included adjustable wall mounting hardware make it suitable for houses of worship, conference facilities, auditoriums, educational environments, and other professional audio installations.
Controlled Coverage for Improved Speech Intelligibility
The AtlasIED ALA20T-B uses a column line array configuration to provide controlled vertical dispersion and broad horizontal coverage.
Its 135° horizontal by 40° vertical dispersion allows sound to reach a wide listening area while limiting excessive vertical spread.
This is especially useful in spaces with reflective surfaces, high ceilings, or challenging acoustics.
Typical applications include:
- Houses of worship
- Conference and meeting facilities
- Auditoriums and lecture halls
- Educational institutions
- Commercial public address systems
- Presentation and speech reinforcement installations
The speaker's 90 Hz–20 kHz frequency response supports speech and program audio reproduction.
Twenty Full-Range Drivers and Six High-Frequency Tweeters
The ALA20T-B incorporates a multi-driver configuration consisting of:
- Twenty 3-inch full-range drivers
- Six 3/4-inch high-frequency tweeters
This combination provides controlled sound distribution and detailed audio reproduction in a compact column-style enclosure.
The design is intended for installations requiring intelligible speech and balanced sound without the appearance of a traditional large-format loudspeaker.
500W RMS Power Handling with 70.7V Transformer Taps
The AtlasIED ALA20T-B offers flexibility for different professional audio system designs.
8-Ohm Operation
The speaker provides 500 watts RMS power handling when operated in its specified 8-ohm configuration.
70.7V Distributed Audio Operation
For compatible commercial distributed audio systems, the ALA20T-B provides selectable 70.7V power taps:
- 7.5 watts
- 15 watts
- 30 watts
- 60 watts
These transformer taps allow installers to select the appropriate speaker power level for the application.
The amplifier and speaker configuration should be matched to the selected operating mode and total system load.
Slim Aluminum Enclosure with Flexible Mounting
The ALA20T-B features a durable extruded aluminum enclosure with a slim profile measuring approximately 4.61 inches wide and 5.43 inches deep.
Its contemporary black finish allows it to blend into commercial interiors and architectural environments.
The speaker includes wall mounting brackets that provide vertical tilt adjustment through integrated mounting channels.
For applications requiring pole mounting, an optional pole mount bracket is available separately.
Note: Pole and pole mount bracket are sold separately.
AtlasIED ALA20T-B Key Features
- Professional column line array speaker for commercial and installed sound systems.
- Twenty 3-inch full-range drivers for controlled audio reproduction.
- Six 3/4-inch high-frequency tweeters for detailed high-frequency performance.
- 500W RMS power handling at 8 ohms.
- 70.7V transformer taps: 7.5W, 15W, 30W, and 60W.
- 135° horizontal × 40° vertical dispersion.
- 97 dB sensitivity (1W/1m).
- 90 Hz–20 kHz frequency response.
- Durable extruded aluminum enclosure.
- Slim black column design.
- Included adjustable wall mounting brackets.
- Barrier strip and NL-4 connection options.
- Optional pole mounting accessories available separately.
- 60-month manufacturer warranty.
AtlasIED ALA20T-B Technical Specifications
| Specification | Details |
|---|
| Manufacturer | AtlasIED |
| Model | ALA20T-B |
| Product Type | Column Line Array Speaker |
| Finish | Black |
| Full-Range Drivers | 20 × 3" |
| High-Frequency Tweeters | 6 × 3/4" |
| 8-Ohm RMS Power | 500 Watts |
| Nominal Impedance | 8 Ohms |
| 70.7V Power Taps | 7.5W, 15W, 30W, 60W |
| Horizontal Dispersion | 135° |
| Vertical Dispersion | 40° |
| Sensitivity | 97 dB (1W/1m) |
| Frequency Response | 90 Hz–20 kHz |
| Enclosure Material | Extruded Aluminum |
| Connections | Barrier Strip and NL-4 |
| Mounting | Wall Brackets Included |
| Optional Mounting | Pole Mount Bracket (Sold Separately) |
| Height | 65.75" (1670 mm) |
| Width | 4.61" (117 mm) |
| Depth | 5.43" (137.9 mm) |
| Warranty Period | 60 Months from Date of Purchase |
Typical Applications
Houses of Worship
The ALA20T-B provides controlled vertical coverage and broad horizontal dispersion for speech reinforcement and program audio in worship spaces.
Conference Rooms and Meeting Facilities
Its column design and controlled dispersion make it suitable for presentation audio and spoken-word applications.
Auditoriums and Lecture Halls
The speaker can support clear speech reproduction in educational and presentation environments.
Commercial Sound Systems
With both 8-ohm and 70.7V operating options, the ALA20T-B provides flexibility for compatible commercial audio installations.
Architectural Audio Installations
Its slim aluminum enclosure offers a visually discreet alternative to larger conventional loudspeaker cabinets.
Why Buy the AtlasIED ALA20T-B from Audio Supply?
At Audio Supply, we specialize in professional audio equipment for commercial sound systems, houses of worship, educational facilities, and installed sound applications.
The AtlasIED ALA20T-B combines controlled coverage, flexible amplification options, and a slim architectural design for installations where speech intelligibility and sound quality are priorities.
Whether you're designing a new sound system or upgrading an existing installation, Audio Supply can help you select compatible amplifiers, mounting accessories, and professional loudspeakers.
Need a Compatible Amplifier or Mounting Accessory?
The AtlasIED ALA20T-B supports both 8-ohm and 70.7V operation, allowing integration into compatible professional audio systems.
For permanent installations, wall mounting brackets are included. Optional pole mounting accessories are available separately.
Contact Audio Supply for assistance selecting compatible amplifiers, mounting hardware, and installation accessories.
