AtlasIED FA138T87 8" Coaxial Ceiling Speaker with 70V Transformer

The AtlasIED FA138T87 is a premium 8-inch coaxial ceiling speaker designed for high-quality sound reproduction in commercial paging, background music, and distributed audio systems. Featuring a factory-installed 8-watt, 70.7V transformer, a reinforced polypropylene woofer, and a ferrofluid-cooled dome tweeter, the FA138T87 delivers detailed audio performance in professional installed sound applications.

Part of the AtlasIED Strategy Series, the FA138T87 combines a durable 8-inch coaxial loudspeaker with an integrated high-pass/low-pass crossover network to provide balanced sound reproduction across its specified 75Hz–20kHz frequency range.

The speaker features a reinforced polypropylene woofer cone, custom butyl rubber surround, 1½-inch vented Kapton voice coil, and 21-ounce magnet assembly. A ½-inch Mylar-dome, ferrofluid-cooled tweeter provides high-frequency reproduction for clear speech and detailed background music.

With selectable 1W, 2W, 4W, and 8W transformer taps, the FA138T87 allows installers to adjust individual speaker output levels within a compatible 70.7V distributed audio system.

Its front-loading design supports installation with compatible AtlasIED Strategy Series enclosures, mounting rings, and grilles, making it a flexible choice for commercial ceiling speaker applications.

Premium 8-Inch Coaxial Speaker Design

The AtlasIED FA138T87 uses an 8-inch coaxial loudspeaker configuration that combines low-frequency and high-frequency drivers into a single speaker assembly.

The coaxial arrangement allows the woofer and tweeter to reproduce their respective frequency ranges from a compact, integrated design.

This makes the FA138T87 well suited for ceiling-mounted applications where consistent sound coverage and space-efficient installation are important.

The speaker incorporates several performance-oriented components:

• Reinforced polypropylene woofer cone
• Custom butyl rubber surround
• 1½-inch vented Kapton voice coil
• 21-ounce magnet assembly
• ½-inch Mylar-dome tweeter
• Ferrofluid-cooled high-frequency driver

Together, these components support clear speech reproduction and detailed music playback in commercial audio environments.

Integrated High-Pass and Low-Pass Crossover

The FA138T87 features a circuit-board-mounted high-pass/low-pass crossover network.

This crossover divides the audio signal between the woofer and tweeter, allowing each driver to reproduce its intended frequency range.

The integrated crossover helps maintain balanced sound reproduction across the speaker's operating bandwidth.

For commercial paging and background music systems, this design supports improved clarity compared with basic single-driver speaker configurations.

Factory-Installed 8W 70.7V Transformer

The AtlasIED FA138T87 includes a factory-installed 8-watt, 70.7V transformer designed for commercial distributed audio systems.

The transformer provides four selectable power taps:

• 1 watt
• 2 watts
• 4 watts
• 8 watts

These tap settings allow installers to adjust the power delivered to individual speakers based on room size, desired sound level, and system design.

For example, a lower tap may be appropriate for quieter office areas, while a higher tap can provide additional output in larger or noisier spaces.

This flexibility makes the FA138T87 suitable for multi-speaker 70.7V installations.

The 8W transformer rating is the maximum available transformer tap.

The total connected speaker load must remain within the capacity of the associated 70.7V amplifier.

Wide Frequency Response for Speech and Music

The AtlasIED FA138T87 provides a manufacturer-listed frequency response of 75Hz–20kHz.

This range supports both speech reproduction and background music applications.

The speaker's coaxial design and integrated crossover help provide balanced reproduction across low, midrange, and high frequencies.

This makes the FA138T87 useful for installations requiring more detailed audio reproduction than basic paging-only loudspeakers.

Typical applications include corporate offices, educational facilities, retail environments, and commercial buildings.

110-Degree Sound Dispersion

The FA138T87 features a manufacturer-listed 110° dispersion pattern.

This coverage characteristic helps installers plan speaker spacing and placement in ceiling-mounted audio systems.

Proper speaker placement can improve sound distribution throughout the listening area.

The wide dispersion makes the FA138T87 suitable for distributed speaker layouts where consistent coverage is important.

Actual coverage will depend on mounting height, room acoustics, and speaker placement.

Durable Components for Commercial Installations

The FA138T87 incorporates materials designed for dependable performance in professional audio environments.

The reinforced polypropylene woofer cone and butyl rubber surround provide durable driver construction.

Its vented Kapton voice coil and 21-ounce magnet support the speaker's performance characteristics.

The ferrofluid-cooled tweeter helps manage heat within the high-frequency driver assembly.

These features make the FA138T87 a practical choice for commercial installations requiring reliable, high-quality audio reproduction.

Compatible with AtlasIED Strategy Series Enclosures

The FA138T87 is designed to integrate with compatible AtlasIED Strategy Series mounting components.

The manufacturer identifies two enclosure families:

AtlasIED FA97-8 Series Enclosures

The FA97-8 Series provides a high-performance enclosure option with approximately 0.22 cubic feet of internal volume and acoustic batting.

These enclosures are designed to complement compatible Strategy Series speakers.

AtlasIED FA95-6 Series Enclosures

The FA95-6 Series provides an economical enclosure option with approximately 0.17 cubic feet of internal volume.

This series offers an alternative for installations requiring a compatible speaker backbox.

Both enclosure families are designed to support the Strategy Series front-loading speaker installation method.

Compatible enclosures and mounting accessories are sold separately.

Front-Loading Installation Design

The AtlasIED Strategy Series is designed to simplify speaker installation and maintenance.

When used with compatible enclosures, the speaker assembly can be front-loaded into the mounting system.

The enclosure mounting arrangement uses rotating clamps that can be adjusted with a screwdriver.

This installation method helps reduce the time required to mount compatible speaker assemblies.

The front-loading design is particularly useful in commercial projects involving multiple ceiling speakers.

Optional Mounting Rings and Installation Accessories

The FA138T87 can also be used with compatible AtlasIED mounting accessories for installations where a conventional enclosure may not be required.

AtlasIED FAPR-8 Plaster Ring

The optional FAPR-8 mounting ring supports compatible ceiling or wall installations with limited available mounting depth.

It provides an alternative mounting method where a separate enclosure is not used.

AtlasIED FA-TR8 New Construction Ring

The optional FA-TR8 new construction ring can be used as a cutout pattern and location marker during drywall installation.

This accessory helps installers establish speaker locations before the final ceiling or wall surface is completed.

Compatible Strategy Series Grilles

The Strategy Series supports compatible decorative grilles designed for push-on installation.

These grilles use serrated mounting studs that engage the compatible mounting assembly without requiring separate grille attachment hardware.

Grilles, enclosures, and mounting rings should be selected according to the specific installation requirements.

UL 1480 Safety Listed

The AtlasIED FA138T87 is listed to UL 1480, according to the manufacturer's specifications.

This safety listing is relevant for commercial audio installations where listed loudspeaker equipment is required.

Installers should verify all applicable electrical, building, and fire safety requirements for the project.

Ideal Applications for the AtlasIED FA138T87

The FA138T87 is suitable for commercial distributed audio systems requiring clear speech and high-quality background music.

Common applications include:

• Commercial paging systems
• Background music installations
• Corporate offices
• Retail stores
• Educational facilities
• Hospitality environments
• Conference facilities
• Institutional buildings
• Commercial distributed audio systems
• Professional ceiling speaker installations

Its coaxial design, selectable transformer taps, and wide dispersion make it a versatile solution for commercial 70.7V speaker systems.

AtlasIED FA138T87 Key Features

• Premium 8-inch coaxial loudspeaker
• Factory-installed 8W, 70.7V transformer
• Selectable 1W, 2W, 4W, and 8W power taps
• Reinforced polypropylene woofer cone
• Custom butyl rubber surround
• 1½-inch vented Kapton voice coil
• 21-ounce magnet assembly
• ½-inch Mylar-dome tweeter
• Ferrofluid-cooled high-frequency driver
• Integrated high-pass/low-pass crossover
• 75Hz–20kHz frequency response
• 110° dispersion
• 89.5dB average sensitivity
• 93dB peak sensitivity
• Compatible with AtlasIED Strategy Series enclosures
• Front-loading speaker installation
• Compatible with optional FAPR-8 mounting ring
• Compatible with optional FA-TR8 new construction ring
• UL 1480 safety listed
• 60-month manufacturer warranty

AtlasIED FA138T87 Technical Specifications

Note: The FA138T87 includes the speaker and factory-installed transformer. Compatible enclosures, grilles, and mounting accessories are separate components unless specifically included in a package.

Why Buy the AtlasIED FA138T87 from Audio Supply?

At Audio Supply, we specialize in professional audio equipment for commercial paging, background music, and distributed sound systems.

The AtlasIED FA138T87 combines premium coaxial speaker construction, a factory-installed 70.7V transformer, and flexible Strategy Series mounting options, making it a practical choice for commercial audio installations requiring clear speech and detailed music reproduction.

Whether you're designing a new distributed ceiling speaker system or replacing an existing loudspeaker, Audio Supply can help you select compatible AtlasIED components for your project.