The ECC-50DA(E), ECC-50BDA, and ECC-125DA(E) are advanced amplifiers with power ratings of 50W, 100W, and 125W, respectively, designed for use with the ECC-50/100(E) emergency command center. These distributed audio amplifiers enhance audio messages for widespread distribution within a facility when additional power is necessary. They are constructed as self-contained units, allowing for convenient installation near protected areas to minimize wiring requirements for speaker circuit outputs. Each ECC-50DA(E) can deliver a total power output of 50W and features four built-in, fully supervised speaker circuits/zones. The ECC-125DA(E) provides a total power output of 125W and also includes four built-in, fully supervised speaker circuits/zones. Both amplifiers can be expanded to accommodate eight speaker circuits when an optional ECC-CE4 module is installed. For installations requiring redundancy, the ECC-50BDA offers either 50W or 100W of primary power, supplemented by 50W of backup power, and comes standard with eight fully supervised speaker circuits/zones. Any combination of up to eight ECC-50DA(E)s, ECC-50BDAs, or ECC-125DA(E)s can be connected to the ECC-50/100(E), achieving a cumulative output of 1,100W of audio. The audio I/O amplifiers are connected to the data bus and audio-riser bus of the ECC-50/100(E) primary operating console. Each unit is equipped with its own power supply, including a built-in battery charger, and is fully supervised by the ECC-50/100(E) for any fault conditions. Features Benefits: - The ECC-50DA(E) and ECC-125DA(E) units are equipped with four onboard fully supervised speaker circuit zones, expandable to eight circuits with the addition of an optional ECC-CE4 module. - The ECC-50BDA features eight onboard fully supervised speaker circuits/zones. - Any combination of up to eight ECC-50DA(E)s, ECC-50BDAs, or ECC-125DA(E)s can be utilized within the ECC-50/100(E) system, providing a total of 1,100W of audio power and 24 speaker circuit outputs. - The ECC-50BDA supports various configurations: 50W primary/50W backup, 100W primary/no backup, and 100W primary/50W backup (optional ECC-50WBU required). - The ECC-50BDA is compatible with low-frequency sounders as per UL 464. For compatible devices, refer to device compatibility document #15384. - Supports both Class A (Style Z) and Class B (Style Y) wiring configurations. - Simplified setup and configuration are facilitated through a built-in web-based programming utility on the ECC-50/100(E). - Complies with UL 2572 (Communication and Control Units Mass Notification Systems) and UL 864 (Emergency Voice Evacuation for Fire). - Features a built-in power supply and battery charger capable of supporting up to 35Ah (for batteries exceeding 18AH, the BB-26 or BB-55F Battery Box is recommended). - The ECC-50DA(E) and ECC-50BDA are field-selectable for operation at either 25VRMS or 70.7VRMS.