The AT-FR rack type fire emergency broadcast power amplifier is used as a system expansion unit together with a fire emergency voice control panel. Installed in a standard 19" cabinet, it receives audio and control signals from the main voice panel and drives additional 120 V constant-voltage loudspeaker lines in the building.
With 150W, 350W and 500W power options, the amplifier can be selected according to project size and required speaker load. It is designed for continuous operation in fire emergency broadcasting and voice evacuation systems, supplying clear and stable audio to field speakers over long cable runs.
The amplifier includes protection and supervision functions such as overload protection, output line monitoring and power supply fault indication, helping to ensure that faults are discovered early and do not affect the whole system. It is suitable for use in shopping malls, office buildings, factories, schools, hospitals and other commercial and industrial sites where the fire emergency broadcasting system needs additional power and coverage.
Rack mount fire emergency broadcast power amplifier for system expansion
Available power ratings: 150W / 350W / 500W
Works together with fire emergency voice control panels via signal / network cable
120 V constant-voltage output for standard fire loudspeakers
Supports long speaker lines and multiple speaker circuits
Overload protection: reduces risk of damage under heavy load or short-circuit
Output line supervision and power fault indication (sound and light alarm)
19" rack type, 1U panel, easy to install in standard cabinets
Ideal for extending coverage in medium and large fire emergency broadcasting and voice evacuation systems
| Item | Specification |
|---|---|
| Product Type | Rack type fire emergency broadcast power amplifier |
| Installation | 19" cabinet, 1U rack mount |
| Output Voltage | 120 VAC constant-voltage speaker line |
| Rated Output Power | 150W / 350W / 500W (model dependent) |
| Mains Input | AC 187 V to AC 242 V |
| Frequency Response | 80 Hz to 8 kHz (±3 dB) |
| Harmonic Distortion | ≤ 5% |
| Signal-to-Noise Ratio | ≥ 70 dB |
| Operating Temperature | 0 °C to 40 °C |
| Operating Humidity | ≤ 95% RH (non-condensing) |
| Protection Functions | Overload protection, output line supervision, power fault alarm |
| Typical Use | Expansion amplifier for fire emergency voice panel |
Expansion of fire emergency broadcasting systems in:
Shopping malls and retail centres
Office buildings and commercial complexes
Factories and warehouses
Schools, universities and training centres
Hospitals and healthcare facilities
Airports, railway stations and other large public buildings
