AtlasIED M812-S2T7-BX-RS 8-Inch Sound Masking Speaker with 70V Transformer

The AtlasIED M812-S2T7-BX-RS 8-Inch Sound Masking Speaker is a professional commercial audio loudspeaker assembly designed for sound masking systems installed above suspended tile ceilings. Featuring an 8-inch dual-cone speaker, a factory-installed 70.7V transformer, and a durable steel enclosure, this unit helps distribute low-level masking sound throughout open offices and other environments where speech privacy is important.

Unlike conventional ceiling speakers that project sound directly into a room, the M812-S2T7-BX-RS uses an upward-facing speaker design to direct masking audio into the ceiling plenum. This allows the sound to disperse through the surrounding ceiling environment, helping create more consistent background sound when incorporated into a properly designed sound masking system.

The integrated 70V transformer provides selectable 0.5W, 1W, 2W, and 5W taps, allowing installers to adjust individual speaker output levels to suit the acoustic requirements of different areas.

The M812-S2T7-BX-RS arrives factory-assembled and wired, complete with an acoustically treated steel enclosure and channel mounting rails for suspended T-bar ceiling systems.

AtlasIED M812-S2T7-BX-RS Key Features

• 8-Inch Dual-Cone Loudspeaker: Uses the Atlas C10A speaker for professional sound masking applications.
• Upward Sound Dispersion: Designed to direct masking audio into the ceiling plenum rather than directly toward occupants.
• 70.7V Transformer: Factory-installed transformer for commercial distributed audio systems.
• Selectable Power Taps: Choose 0.5W, 1W, 2W, or 5W to accommodate system requirements.
• Externally Accessible Transformer Leads: Simplifies power tap selection without disassembling the enclosure.
• 100 Hz–10 kHz Frequency Response: Supports the frequency range used in commercial sound masking applications.
• Acoustically Treated Enclosure: Heavy-gauge steel housing with internal fiberglass treatment to reduce enclosure resonance.
• 529 Cubic Inch Enclosure Volume: Provides a dedicated housing for the 8-inch loudspeaker.
• Suspended Ceiling Installation: Includes two 23¾-inch channel mounting rails and associated installation hardware.
• Factory-Assembled and Wired: Reduces installation preparation time.
• Black Epoxy Finish: Durable finish suitable for concealed ceiling installations.
• UL 1480 Listed: Designed for professional commercial audio installations.

Designed for Commercial Sound Masking Systems

Sound masking systems introduce carefully controlled background sound to help reduce the intelligibility of nearby conversations.

In open offices and other shared workspaces, speech can travel between desks, meeting areas, and adjoining spaces. A properly designed sound masking system can make distant conversations less distracting and improve perceived speech privacy.

The AtlasIED M812-S2T7-BX-RS is designed to serve as a loudspeaker component within such a system.

Typical applications include open-plan offices, call centers, administrative facilities, and commercial buildings where consistent background masking sound is desired.

The speaker requires an appropriate sound masking signal source and compatible 70V amplification equipment. It does not generate masking noise independently.

Upward-Facing Speaker for Suspended Ceilings

The M812-S2T7-BX-RS is specifically designed for installation above suspended tile ceilings.

Its upward-facing 8-inch speaker directs sound into the ceiling plenum, where the surrounding environment helps distribute the masking audio.

This arrangement differs from conventional downward-facing ceiling speakers used for paging and background music.

The speaker mounting plate does not include a perforated grille, leaving the driver exposed within the intended concealed installation environment.

Proper spacing, placement, system equalization, and level adjustment are important for achieving consistent masking coverage.

Integrated 70V Transformer with Four Power Taps

The AtlasIED M812-S2T7-BX-RS includes a factory-mounted 70.7V line transformer with four selectable power settings:

• 0.5 watt
• 1 watt
• 2 watts
• 5 watts

These taps allow installers to adjust the amount of power delivered to each speaker, helping balance masking sound levels throughout the installation.

Transformer leads are accessible externally, allowing power tap adjustments without removing the loudspeaker from its enclosure.

This design is especially useful for larger commercial systems with multiple sound masking loudspeakers connected to a common 70V amplifier.

Acoustically Treated Steel Enclosure

The M812-S2T7-BX-RS features a heavy-gauge cold-rolled steel enclosure designed for professional installations.

The enclosure includes acoustic undercoating and fiberglass treatment to help reduce unwanted cabinet resonance.

With an internal volume of 529 cubic inches, the enclosure provides a dedicated acoustic housing for the Atlas C10A 8-inch dual-cone loudspeaker.

The black epoxy finish provides durable protection for the housing in suitable indoor installation environments.

Convenient Channel Rail Mounting

The M812-S2T7-BX-RS includes two 23¾-inch channel support rails and the required mounting hardware for compatible suspended T-bar ceiling systems.

Because the loudspeaker, transformer, and enclosure are factory-assembled and wired, installers can position the complete assembly within the ceiling structure and connect it to the sound masking system.

Installation should follow AtlasIED's instructions and applicable building and electrical codes.

AtlasIED M812-S2T7-BX-RS Technical Specifications

Specification	Details
Manufacturer	AtlasIED
Model	M812-S2T7-BX-RS
Product Type	Channel-mounted sound masking speaker assembly
Loudspeaker	Atlas C10A
Speaker Size	8 inches
Speaker Design	Dual-cone
Dispersion	Upward
Transformer	Factory-installed 70.7V
Maximum Transformer Tap	5 watts
Selectable Power Taps	0.5W, 1W, 2W, 5W
Frequency Response	100 Hz–10 kHz
Sensitivity	97 dB peak / 94 dB average
Enclosure Material	Heavy-gauge cold-rolled steel
Enclosure Treatment	Acoustic undercoating and fiberglass
Enclosure Volume	529 cubic inches
Enclosure Dimensions	11⅝ in. square × 4 in. deep
Mounting Rails	Two 23¾-inch channel rails
Mounting Application	Suspended T-bar ceiling systems
Finish	Black epoxy
Weight	Approximately 9 lb
Safety Listing	UL 1480
Manufacturer Warranty	60 months from date of purchase

Recommended Applications

• Open-Plan Offices: Helps reduce distractions caused by nearby conversations.
• Call Centers: Supports more consistent background masking coverage across work areas.
• Corporate Buildings: Suitable for sound masking installations above suspended ceilings.
• Administrative Facilities: Helps improve perceived speech privacy in shared workspaces.
• Professional Offices: Useful in environments where conversation intelligibility needs to be reduced.
• Commercial Sound Masking Projects: Integrates into appropriately designed 70V sound masking systems.

Why Buy the AtlasIED M812-S2T7-BX-RS from Audio Supply?

Audio Supply offers professional AtlasIED speakers and commercial audio equipment. We can help you identify compatible amplification and sound masking components for your installation.

Need a Compatible 70V Amplifier or Sound Masking System?

The AtlasIED M812-S2T7-BX-RS requires a compatible 70V amplifier and an appropriate sound masking signal source.

For larger installations, speaker placement, transformer tap settings, and system tuning should be determined as part of the overall acoustic design.