The MXR 4500/2 is the master unit of the DXT 4000 Voice Alarm system, engineered for rack-mount installations in small to medium-sized environments requiring EN 54-16 certification. This robust unit delivers 500 W total output power through a Class D+ amplifier and supports up to 2 controlled zones. It includes a monitored SD card for emergency message playback, spare amplifier switching, and an integrated DSP for superior audio clarity and equalization. The built-in IE 3008 board allows for master-slave configuration, connecting up to 8 units. With EN 54-4 certified internal power supply and 48 V DC backup, this unit ensures high reliability. It can be paired with BM 3804, BM 3804FM, and ME 3801 consoles, as well as BE 3806 button extensions, to enable live announcements and emergency paging. Designed for 19″ rack mounting in a 4U space, the MXR 4500/2 is compact, durable, and ideal for critical communication applications.
Features
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500 W total power
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Up to 2 zones controlled
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On-board DSP platform
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Certified EN 54-16 and EN 54-4
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Emergency messages on monitored SD card
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Spare power amplifier facility
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Integrated audio source on front panel
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Rack mount installation (4U)
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Up to 8 units connectable in master-slave configuration
Specifications
| Number of zones managed | 2 |
| Built-in power amplifier | Yes |
| Spare amplifier switch | Yes |
| Max number of consoles | 4 |
| Console buses | 1 |
| Emergency audio channels | 1 |
| Max connectable units | 8 |
| Communication bus | Serial |
| Connection cables | J-Type fire-rated |
| Emergency messages | Yes (on SD card) |
| Amplifier class | D+ |
| Number of channels | 2 |
| Output power @ 100 V | 500 W RMS |
| A/B speaker line | Yes |
| Frequency response | 80 Hz ÷ 16 kHz |
| Signal/noise ratio | >98 dB |
| THD @ 1 kHz | <0.3 % |
| Total inputs | 3 (Balanced Mono) |
| Line inputs/connectors | 2 / Euroblock, JACK |
| VOX | Yes |
| Paging inputs/connectors | 1 / Euroblock |
| Paging command | Serial |
| Paging emergency | Yes |
| GPI (monitored/photo) | 6 / 6 / 6 |
| Signal outputs/connectors | 1 / JACK |
| Power outputs/connectors | 2 / Euroblock |
| GPO | 6 |
| DSP | Yes |
| Tone controls | Yes |
| High-pass filter | 20 Hz ÷ 500 Hz |
| Configuration | DIP switch, Front panel |
| Chime tone | Yes |
| Cooling | Convection |
| Protections | Short circuit, Thermal, DC, Fuses, VHF |
| USB/SD audio source | Yes / Yes |
| Operating voltage | 220-240/115 V~ 50/60Hz |
| Voltage selection | Internal |
| DC power/input | Yes / 48 V |
| Power consumption (max) | 700 W |
| IP protection grade | — |
| Safety agency | CE compliant |
| EN54-16 certified | Yes |
| EN54-4 certified | Yes |
| CPR number | 0068-CPR-230/2025 |
| Material | Metal |
| Color | Black – RAL 9005 |
| Rack mounting | 19″, 4U |
| Height | 178 mm / 7.01 inches |
| Width | 482 mm / 18.98 inches |
| Depth | 426 mm / 16.77 inches |
| Weight | 11.3 kg / 24.91 lbs |
| Package height | 262 mm / 10.31 inches |
| Package width | 523 mm / 20.59 inches |
| Package depth | 523 mm / 20.59 inches |
| Package weight | 15.1 kg / 33.29 lbs |
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