The SPA480 amplifier was specifically developed to meet the requirements of EN 60849 for safety installations.
Each amplifier module is fitted with its own 220 VAC/24 VDC power supply for increased system reliability. To avoid handling errors, the volume output is set using the potentiometer located at the back of the apparatus.

	Data Sheet
SPA480

Further to standard protection via fuses, SPA amplifiers also have electronic and thermal protection to protect them from all potential hazards.
A ventilator provides forced cooling for the final power shelves and internal parts of the apparatus. It starts up automatically when the heat shunt reaches a certain temperature threshold, and stops when the temperature returns to normal values.
Four LEDs display the status of each amplifiers: AC or DC power supply, Line Overload and Temperature overload.
Furthermore, a three LEDs Vu-Meter indicates the presence and level of audio signal.
A surveillance circuitry is continuously monitoring the temperature and the presence of AC and DC power supplies for both amplifiers. In case of a problem, the overload LEDs will be switched ON and the Fault relay will be activated. The channels can be bridged together in order to create a single channel amplifier with twice or four time the power.

MAIN PROPERTIES

• Balanced 0 db inputs.
• 100 V outputs.
• Thermostatic ventilation.
• Power supply internal surveillance.
• 230 VAC and 24 VDC power supply.
• "Amplifier status"  contact output.
• Connexions on detachable screw-on terminal boards.
• Bridged mode accepted.