D550i Class D Audio Power Amplifier for Elemec Plus PA/GA System
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GAI-Tronics Systems Class D Audio Power Amplifier D550i for Elemecplus PA/GA System Efficiency 80% (240VAC 100V Line) Class D Operation LCD Status Indication 550W 2U Modular Design Comprehensive fault monitoring User-friendly Set up & Commissioning At the heart of all GAI-Tronics Public Address Systems is the D550i Class D Power Amplifier. The D550i is designed for use in GAI-Tronics high integrity Elemec, NOVA and Advance public address and alarm systems. GAI-Tronics designs and manufactures sophisticated public address and alarm systems to suit specific markets and applications. The NOVA system addresses multiple zones, multiple networks and multiple speech path applications such as large petrochemical facilities. Elemecplus addresses self-contained applications such as platforms and FPSOs. ADVANCE combines public address with multistation intercom capability. The field proven D550i amplifier is designed for performance in a range of applications, continuous 550W RMS rated outputs for Alarm Systems to high quality music reproduction. To reduce the risk of single point failure on AC systems, the Amplifier has its own internal rectified DC power supply. Fault protection and 20 kHz load sensing are contained within the Amplifier. Load sensing is easily configured by use of pushbuttons on the front of each amplifier. This load sensing facility allows loudspeaker monitoring and automatically detects changes in the load of the connected loudspeakers. Thermostatically controlled fans, integral to each unit, provide forced air cooling to the output power devices only during high temperature operation. System expansion is easily achieved by simply adding more amplifiers without the need to change controller hardware.

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GAI-Tronics Systems Class D Audio Power Amplifier D550i for Elemecplus PA/GA System SPECIFICATIONS LCD Indicator Panel on the front of the amplifier displays the following information: • High Temperature Operation • Output Overload Condition • Amplifier Shutdown Protection Active • Power Healthy • Amplifier Enabled / Disabled • Fuse Failure • Zone Allocation • Bargraph of output level Electrical • Output power: 550W • Line output voltage: 100V rms (or client spec) • Input sensitivity: 0dBm (0.775V rms) for rated output • Frequency response: 50Hz - 18kHz (-3dB points) • Total harmonic...

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