The AtlasIED T20 30-Watt Line Matching Transformer is designed to connect compatible 8-ohm loudspeakers and compression drivers to 25V or 70.7V distributed audio systems. With multiple primary power taps and a 30-watt power rating, the T20 provides flexible speaker power selection for commercial paging, sound reinforcement, and high-noise communication applications.
Designed for professional installations, the T20 offers a 60 Hz–20 kHz frequency response (±1.5 dB) and an 8-ohm secondary output. Its wide frequency range makes it suitable for compatible speaker systems requiring efficient impedance matching and reliable audio reproduction.
The transformer is particularly useful with compression driver horns in industrial facilities, warehouses, manufacturing plants, and other environments where intelligible paging and announcements are essential.
Features and Benefits
30-Watt Line Matching for Distributed Audio
The T20 allows a compatible 8-ohm speaker or compression driver to operate from a 25V or 70.7V constant-voltage speaker line.
This is useful in commercial sound systems where multiple loudspeakers share a distributed amplifier circuit.
Multiple Primary Power Taps
Selectable primary connections provide flexibility when matching speaker power requirements to the system design.
The T20 supports the following power taps:
- 70.7V: 1.8W, 3.7W, 7.5W, 15W, and 30W
- 25V: 1.89W, 3.7W, 7W, and 15W
These tap options allow installers to choose an appropriate power level based on speaker capability, desired output, and available amplifier power.
8-Ohm Secondary Connection
The transformer features an 8-ohm secondary, allowing connection to compatible low-impedance loudspeakers and compression drivers.
This makes the T20 useful when incorporating suitable 8-ohm speakers into a constant-voltage distribution system.
Wide 60 Hz–20 kHz Frequency Response
With a published frequency response of 60 Hz–20 kHz (±1.5 dB), the T20 is designed to pass a broad range of audio frequencies.
Actual system frequency response will depend on the connected loudspeaker, amplifier, and installation.
Designed for Compression Driver Horn Applications
The T20 is especially suited for compatible compression driver horn loudspeakers used in high-ambient-noise environments.
Applications include paging, voice announcements, and industrial sound systems requiring dependable speaker line matching.
Compact Construction and Solder-Lug Connections
The T20 features a compact transformer assembly with solder-lug primary and secondary connections.
Its small dimensions make it practical for integration into compatible loudspeaker assemblies and professional audio installations where mounting space is limited.
AtlasIED T20 Key Features
- Professional 30-watt line matching transformer
- Compatible with 25V and 70.7V distributed speaker lines
- Multiple primary power taps
- 8-ohm secondary impedance
- 60 Hz–20 kHz frequency response
- ±1.5 dB frequency response tolerance
- Maximum 0.5 dB insertion loss
- Designed for compatible compression driver horns
- Suitable for high-noise paging environments
- Solder-lug primary and secondary connections
- Compact transformer construction
- Five-year manufacturer warranty
AtlasIED T20 Audio Performance
Transformer Type | Line Matching |
Power Rating | 30W |
Primary Voltage | 25V / 70.7V |
Secondary Impedance | 8Ω |
Frequency Response | 60 Hz–20 kHz (±1.5 dB) |
Maximum Insertion Loss | 0.5 dB |
70.7V Power Taps | 1.8, 3.7, 7.5, 15, 30W |
25V Power Taps | 1.89, 3.7, 7, 15W |
AtlasIED T20 Technical Specifications
Model | T20 |
Primary Connections | Solder Lugs |
Secondary Connections | Solder Lugs |
Core Size | 5/8" x 5/8" |
Height | 1-5/8" (4.13 cm) |
Width | 1-15/16" (4.92 cm) |
Depth | 3/4" (1.91 cm) |
Shipping Weight | 2.50 lbs (1.13 kg) |
Warranty | 60 Months |
Recommended Applications
Industrial Paging Systems: Provides line matching for compatible horn speakers used in warehouses, factories, and manufacturing facilities.
Commercial Distributed Audio: Allows suitable 8-ohm loudspeakers to be connected to 25V or 70.7V speaker distribution systems.
Schools and Institutional Facilities: Useful in paging and announcement systems requiring appropriate speaker power selection.
Transportation and Public Facilities: Suitable for compatible paging speaker assemblies where reliable voice communication is needed.
Sound System Upgrades: Provides a transformer option when integrating compatible low-impedance loudspeakers into an existing constant-voltage system.
Need a Compatible Horn Speaker?
The AtlasIED T20 is designed for use with compatible 8-ohm compression drivers and horn loudspeakers.
When selecting a speaker, verify its impedance, power handling, mounting provisions, and compatibility with the transformer's selected power tap.
Why Buy the AtlasIED T20 from Audio Supply?
Audio Supply offers professional AtlasIED transformers, loudspeakers, and commercial audio equipment for distributed sound and paging applications. The T20 provides flexible 25V/70.7V line matching, multiple power taps, and reliable performance for compatible professional speaker systems.
