Description The MXR 4500/6 is the advanced master unit in the DXT 4000 Voice Alarm system, engineered for rack-mounted applications in small to medium-sized environments requiring EN 54 compliance. Delivering 500 W of total output through high-efficiency Class D amplifiers, this unit supports up to 6 independent speaker zones. It features a built-in DSP platform for precise audio tuning, improving both voice clarity and background music quality. Emergency messages can be stored on a monitored SD card, and a spare amplifier switching facility ensures system reliability. The integrated audio source is accessible via the front panel. The unit allows up to 8 devices to be connected in a MASTER-SLAVE configuration through its included IE 3008 board. Compatible with emergency paging consoles like BM 3804, BM 3804FM, ME 3801, and BE 3806 extensions, the MXR 4500/6 delivers robust, scalable performance for safety-critical applications. Designed for 4U rack installation, the system includes an EN 54-4 certified internal power supply and supports 48 V DC power backup. Features 500 W total power outputControls up to 6 independent zonesBuilt-in DSP for audio optimizationCertified to EN 54-16 and EN 54-4Emergency message playback from SD cardSpare amplifier auto change-overIntegrated front panel audio sourceRack mountable (4U)Expandable to 8 MASTER-SLAVE units Specifications Number of zones managed6Built-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 channels6Output 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/connectors6 / 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 inchesWeight14.2 kg / 31.31 lbsPackage height262 mm / 10.31 inchesPackage width523 mm / 20.59 inchesPackage depth523 mm / 20.59 inchesPackage weight18 kg / 39.68 lbs
