3-ZA40A EDWARDS Zoned Amplifier 40 Watt Class A/B. 40 Watt Selectable For 25 Or 70 Vrms Class A/B Output. Mounts In 1 Lrm Space. Has Built In Class. A/B Nac Rated At 3.5 Amps. Supports One User Interface Module.

The EST3 audio amplifiers take full advantage of proven digital technology to deliver highly intelligible voice audio for evacuation and Mass Notification/Emergency Communication (MNEC) purposes. Digital messages generated by the Audio Source Unit (ASU) and live paging messages are multiplexed into eight separate channels transmitted over fiber optic cable or a single twisted pair of wires. Each zoned amplifier contains integrated demultiplexing circuitry that allows any one of the eight digital audio channels to place messages or signals on the amplifier’s built-in speaker circuit.

Audio channel selection is network software controlled, and audio amplifiers mount in the same enclosures as other EST3 equipment. Power for the amplifiers comes from standard system power supplies through the local rail. Field wiring connects to removable terminal blocks on the amplifier module. Amplifiers support either 25 VRMS or 70 VRMS power limited speaker circuits. For visual signaling, each 20 or 40 watt amplifier comes standard with one 24 Vdc power limited Notification Appliance Circuit.

With their advanced digital technology and flexible design, EST3 audio amplifiers provide reliable and efficient voice audio solutions for emergency communication and mass notification systems, ensuring clear and effective communication in critical situations.

Specifications:

Features:

• Three sizes available
• Simultaneous eight channel digital audio
• Speaker circuit built into amplifier
• 3.5 amp 24 Vdc notification circuit on 20 and 40 watt amplifiers
• Network software control of channel selection
• Integral backup tone generator
• Part of an end-to-end 520 Hz signaling solution