Description The MXR 4500/4 is a powerful master unit within the DXT 4000 Voice Alarm system, built for rack-mounted applications in small to medium-scale environments requiring EN 54-16 compliance. With 500 W total output and Class D amplification technology, it can manage up to 4 independent zones, ensuring clear and effective emergency communication. The unit includes an onboard DSP platform for precise environmental equalization and audio optimization, improving both speech intelligibility and music performance. Emergency messages can be stored and monitored via SD card, while a spare amplifier switching function provides added reliability. Integrated audio sources are accessible from the front panel, and up to 8 units can be linked in a MASTER-SLAVE setup via the built-in IE 3008 board. Compatible with microphone consoles such as BM 3804, BM 3804FM, ME 3801, and BE 3806 button extensions, the MXR 4500/4 is designed to deliver flexible and dependable voice alarm functionality. Its 4U rack-mountable design, EN 54-4 certified internal power supply, and 48 V DC backup capability make it an ideal choice for critical safety applications. Features 500 W total output powerSupports up to 4 independent zonesAdvanced on-board DSP platformCertified EN 54-16 and EN 54-4Emergency messages on monitored SD cardSpare power amplifier switching functionIntegrated audio source on front panelRack mount installation (4U)Expandable up to 8 units in MASTER-SLAVE configuration Specifications Number of zones managed4Built-in power amplifierYesSpare amplifier switchYesMax number of consoles4Console buses1Emergency audio channels1Max connectable units8Communication busSerialConnection cablesJ-Type fire-ratedEmergency messagesYes (on SD card)Amplifier classD Number of channels4Output power @ 100 V500 W RMSA/B speaker lineYesFrequency response80 Hz ÷ 16 kHzSignal/noise ratio>98 dBTHD @ 1 kHz<0.3 %Total inputs3 (Balanced Mono)Line inputs/connectors2 / Euroblock, JACKVOXYesPaging inputs/connectors1 / EuroblockPaging commandSerialPaging emergencyYesGPI (monitored/photo)6 / 6 / 6Signal outputs/connectors1 / JACKPower outputs/connectors4 / EuroblockGPO6DSPYesTone controlsYesHigh-pass filter20 Hz ÷ 500 HzConfigurationDIP switch, Front panelChime toneYesCoolingConvectionProtectionsShort circuit, Thermal, DC, Fuses, VHFUSB/SD audio sourceYes / YesOperating voltage220-240/115 V~ 50/60HzVoltage selectionInternalDC power/inputYes / 48 VPower consumption (max)700 WSafety agencyCE compliantEN54-16 certifiedYesEN54-4 certifiedYesCPR number0068-CPR-230/2025MaterialMetalColorBlack – RAL 9005Rack mounting19″, 4UHeight178 mm / 7.01 inchesWidth482 mm / 18.98 inchesDepth426 mm / 16.77 inchesWeight12.75 kg / 28.11 lbsPackage height262 mm / 10.31 inchesPackage width523 mm / 20.59 inchesPackage depth523 mm / 20.59 inchesPackage weight16.55 kg / 36.49 lbs
