The AtlasIED BT720-4-T47 is a professional 4-inch in-ceiling speaker assembly designed for commercial paging, background music, and distributed audio systems. Combining the AtlasIED FC104 high-compliance loudspeaker, a factory-mounted 4-watt 70.7V transformer, and the T720-4 baffle, this preassembled speaker package provides a convenient solution for commercial ceiling installations.
Part of the AtlasIED B Series, the BT720-4-T47 delivers clear voice reproduction and balanced background music performance. Its high-compliance 4-inch speaker features a 10-ounce ceramic magnet and damped cone construction, providing a 150Hz–17kHz frequency response and 94dB sensitivity (1W/1m).
With a wide 135° dispersion pattern, the BT720-4-T47 helps distribute sound evenly throughout commercial spaces, making it suitable for offices, retail stores, restaurants, educational facilities, and other distributed audio applications.
The factory-assembled construction reduces installation preparation, while the included T720-4 baffle features torsion-spring mounting for convenient installation in compatible ceilings.
Factory-Assembled Speaker, Transformer, and Baffle
The AtlasIED BT720-4-T47 combines the essential components of a commercial ceiling speaker into one convenient assembly.
The package includes:
- AtlasIED FC104: 4-inch high-compliance loudspeaker
- 4-Watt 70.7V Transformer: Provides selectable power taps for distributed audio systems
- AtlasIED T720-4 Baffle: Ceiling baffle with torsion-spring mounting
These components are factory-assembled, eliminating the need to purchase and assemble each part separately.
This design helps reduce installation preparation and simplifies equipment selection for commercial audio contractors.
High-Compliance 4-Inch Speaker for Paging and Background Music
The BT720-4-T47 incorporates the AtlasIED FC104 loudspeaker, designed for full-range voice and music reproduction in commercial environments.
Its high-compliance cone and 10-ounce ceramic magnet provide smooth audio performance across a 150Hz–17kHz frequency range.
With 94dB sensitivity at 1 watt/1 meter, the speaker is designed to provide efficient sound reproduction for distributed audio installations.
The BT720-4-T47 is suitable for applications requiring clear announcements, general paging, and background music.
Wide 135° Sound Dispersion
The AtlasIED BT720-4-T47 provides a 135° dispersion angle measured at -6dB in the 2kHz octave band.
This wide coverage pattern helps distribute sound throughout the listening area.
Wide dispersion can be particularly useful in commercial ceiling speaker installations where consistent audio coverage is important.
Depending on ceiling height, room acoustics, and desired sound levels, the speaker's coverage characteristics may help reduce the number of loudspeakers required compared with narrower-dispersion designs.
Proper speaker spacing should always be determined according to the installation requirements.
Factory-Mounted 4-Watt 70.7V Transformer
The BT720-4-T47 includes a factory-mounted transformer designed for 70.7V distributed audio systems.
The transformer provides four selectable power taps:
- 0.5 watts
- 1 watt
- 2 watts
- 4 watts
These settings allow installers to adjust the power delivered to individual speakers based on the required sound level and system design.
Lower tap settings may be appropriate for quieter background music areas, while higher settings can provide additional output where needed.
The selectable taps also help installers balance sound levels across multiple speakers connected to a compatible 70.7V amplifier.
T720-4 Baffle with Torsion-Spring Mounting
The included AtlasIED T720-4 baffle provides a finished ceiling appearance and incorporates torsion-spring mounting.
The torsion-spring design helps simplify installation in compatible ceiling assemblies.
This makes the BT720-4-T47 a practical option for commercial projects requiring multiple ceiling speakers.
The appropriate mounting supports, tile bridges, and protective enclosures should be selected according to ceiling construction and applicable installation requirements.
Designed for Commercial Paging and Background Music
The AtlasIED BT720-4-T47 is designed for commercial distributed audio systems using compatible constant-voltage amplification.
Its combination of clear voice reproduction, wide dispersion, and selectable transformer taps makes it suitable for a variety of applications.
Common installations include:
- Office paging and background music
- Retail stores and shopping areas
- Restaurants and hospitality facilities
- Educational buildings
- Commercial waiting rooms
- Administrative offices
- General announcement systems
- Distributed background music installations
The factory-assembled design is particularly useful for projects requiring consistent speaker configurations throughout a building.
AtlasIED BT720-4-T47 Key Features
- Professional 4-inch in-ceiling speaker assembly
- Designed for commercial paging and background music
- Factory-assembled loudspeaker, transformer, and baffle
- Includes AtlasIED FC104 high-compliance loudspeaker
- Includes AtlasIED T720-4 ceiling baffle
- Factory-mounted 4-watt 70.7V transformer
- Selectable 0.5W, 1W, 2W, and 4W transformer taps
- High-compliance speaker with damped cone construction
- 10-ounce ceramic magnet
- 150Hz–17kHz frequency response
- 94dB sensitivity (1W/1m)
- 135° dispersion at -6dB, 2kHz octave band
- Torsion-spring baffle mounting
- Factory-assembled design simplifies installation preparation
- Suitable for commercial distributed audio systems
- 60-month manufacturer warranty
AtlasIED BT720-4-T47 Technical Specifications
| Specification | Details |
|---|
| Manufacturer | AtlasIED |
| Product Series | B Series |
| Model | BT720-4-T47 |
| Product Type | In-Ceiling Speaker / Transformer / Baffle Assembly |
| Speaker Model | FC104 |
| Baffle Model | T720-4 |
| Speaker Type | High-Compliance Loudspeaker |
| Speaker Diameter | 4" (102mm) |
| Magnet | 10-Ounce Ceramic |
| Transformer | Factory-Mounted 4W |
| Transformer Voltage | 70.7V |
| Power Taps | 0.5W, 1W, 2W, 4W |
| Sensitivity | 94dB (1W/1m) |
| Frequency Response | 150Hz–17kHz |
| Dispersion | 135° (-6dB, 2kHz Octave Band) |
| Baffle Mounting | Torsion Spring |
| Depth | 3.64" |
| Manufacturer Warranty | 60 Months from Date of Purchase |
Typical Applications
Office Paging Systems
Provide distributed audio coverage for employee announcements, general paging, and background music.
Retail Stores
Deliver music and announcements throughout sales floors and other commercial areas.
Restaurants and Hospitality
Support background music and paging systems in dining areas, reception spaces, and other commercial environments.
Educational Facilities
Provide audio reproduction for paging and general announcements in compatible school and administrative installations.
Commercial Buildings
Integrate with compatible 70.7V amplifiers for distributed audio systems requiring multiple ceiling speakers.
Why Buy the AtlasIED BT720-4-T47 from Audio Supply?
At Audio Supply, we specialize in professional audio equipment for commercial paging, background music, and distributed sound systems.
The AtlasIED BT720-4-T47 provides a convenient factory-assembled ceiling speaker solution, combining the FC104 loudspeaker, 4-watt transformer, and T720-4 baffle in one package.
Whether you're installing a new commercial sound system or expanding an existing paging installation, Audio Supply can help you select compatible amplifiers, speakers, and installation accessories.
Need a Compatible 70V Amplifier?
The AtlasIED BT720-4-T47 is designed for use with compatible 70.7V distributed audio amplifiers.
When selecting an amplifier, consider the number of speakers, their transformer tap settings, and the total system power requirements.
For example, ten BT720-4-T47 speakers tapped at 4 watts each would require 40 watts of speaker power, before allowing additional amplifier capacity for system design.
Contact Audio Supply for assistance selecting a compatible AtlasIED amplifier for your commercial ceiling speaker installation.
