MX 3250/4 Architectural and Engineering Specifications DESCRIPTION The product shall be the master unit of the voice alarm system, dedicated to small and medium size applications where an EN 54-16 certified system is required. It shall be equipped with powerful and exceptionally reliable 'Class D' power amplifiers, able to provide a total power up to 250 W. Amplifier outputs shall be 100 V / 70 V (for constant voltage speaker lines). Each zone shall have two outputs to get redundant lines. It shall be able to serve up to 4 independent zones. Moreover, the last internal amplifier can be alternatively used as spare (with automatic change-over). The internal power supply shall be EN 54-4 certified and the backup batteries shall be hosted inside the cabinet, making the system a complete and extremely compact solution. A on-board DSP allows to optimize the equalization and get the best voice intelligibility and background music performance. The system can be completed with emergency microphone consoles, allowing to add live announcements functionality. A simple MP3 player shall be present on its front panel, having an additional aux input for external audio sources. The master unit shall have an internal slot for an optional 'interlink' board for linking up to 8 master units one another. TECHNICAL SPECIFICATIONS The product shall have the following specifications System specifications Number of zones managed 4 Max number of consoles 4 Number of console buses 1 Number of simultaneous emergency audio channels 1 Max number of units connectable 8 Built-in power amplifier Yes Spare amplifier automatic change-over Yes Communication bus Serial Connection Cables J-Type fire-rated Integrated pre-recorded emergency messages Yes Amplifier specifications Number of channels 4 Power output (@ 100 V) 250 W RMS Amplifier Class D+ A/B speakers line Yes Frequency Response (-3dB) 80 Hz ÷ 16 kHz Signal/noise rate (”A” weighted) >98 dB Distortion (THD+N) @ 1 kHz nominal power <0.3 % Input section Total number of inputs 3 Balanced 3 Mono 3 Line inputs 2 Paging inputs 1 Line connectors Euroblock, JACK General Purpose Inputs (GPI) 6 Monitored GPI 6 Photo-coupled GPI 6 VOX Yes Paging connectors Euroblock Paging command Serial Paging emergency Yes Output section Signal output number 1 Power output lines 4 General Purpose Outputs (GPO) 6 Signal output connectors JACK Power output connectors Euroblock Processing DSP Yes Tone controls Yes High-pass filter 20 Hz ÷ 500 Hz Controls Configuration DIP switch, Front panel Chime tone Yes Protections Cooling Convection Short circuit Yes Thermal Yes DC Yes Fuses Yes VHF (Very High Frequencies) Yes Audio sources USB pen drives Yes SD card Yes Power requirement Power consumption 400 W Operating voltage 220-240/115 V~ 50/60Hz Voltage selection Internal DC power Yes DC power value 24 V Standard compliance CPR number 0068-CPR-007/2015 IP protection grade IP 30 EN54-16 certified Yes EN54-4 certified Yes Safety agency CE compliant Physical specifications Cabinet/Case Material Metal Color White Rack mounting 19", 12U Size Height 530 mm / 20.87 inches Width 430 mm / 16.93 inches Depth 190 mm / 7.48 inches Weight 15.96 kg / 35.19 lbs The product shall be MX 3250/4 by RCF S.p.A.