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CMX PA-4500MX – 4 Zone Mixer Amplifier
► Massive 2000W Total RMS Output: 4 Discrete Amplification Channels Delivering 4 × 500W RMS
► True 4-Channel Audio Matrix Routing: Route Any Input Source to Any Output Zone Independently
► Dual Output Versatility: Simultaneous 100V Commercial Constant Voltage & 8–16Ω Low-Impedance per Zone
► Built-In Digital Multimedia Player Supporting Bluetooth Wireless, USB, SD Card & FM Radio
► 3 Balanced Combo XLR/6.35mm Mic/Line Inputs with Dedicated 48V Phantom Power & Gain Controls
► Mic 1 VOX Highest Priority Override, EMC Alarm Input & Emergency Remote Mute Integration
► Supports Up to 8 Remote Paging Microphones (PA-4500RM) & 4 Remote Wall Panels (PA-4500WP) via CAT6
► Master Chime Generator with Dedicated Level Adjustment for Clear Pre-Announcement Notification
► Standard 19-Inch 3U Heavy-Duty Rack-Mount Metal Chassis with Multi-Stage Protection Suite
CMX PA-4500MX – 4 Zone Mixer Amplifier
Professional Enterprise 4-Zone Audio Matrix Mixer Amplifier with 4 × 500W (2000W RMS Total) Power Amplification, 4-Channel Matrix Routing, Built-In Bluetooth/USB/SD/FM Player, Dual 100V & 8Ω Simultaneous Outputs & CAT6 Remote Control Architecture
The CMX PA-4500MX is an enterprise-grade 4-zone commercial audio matrix mixer amplifier engineered for large-scale multi-room hospitality, leisure, corporate, and public infrastructure venues. Delivering an immense 2,000 Watts RMS total power through four discrete 500W amplification channels (4 × 500W), the PA-4500MX combines a flexible 4-channel audio matrix with integrated multi-zone power amplification in a single heavy-duty 19-inch 3U rack-mount chassis. Any input source—including the integrated Bluetooth/USB/SD/FM multimedia player, three balanced combo XLR mic/line inputs with switchable 48V phantom power, and auxiliary line sources—can be matrix-routed to any of the four output zones completely independently. With simultaneous support for 100V distributed lines and 8–16Ω low-impedance loudspeakers, connectivity for up to 8 remote CAT6 paging microphones (PA-4500RM) and 4 in-room remote control wall plates (PA-4500WP), priority VOX override, and third-party fire alarm emergency mute integration, the PA-4500MX establishes the ultimate benchmark for commercial audio distribution.
Ideal For
Core Engineering Features
High-Capacity 4 × 500W (2000W RMS) Multi-Zone Amplification
Houses four discrete 500W RMS industrial power amplifier channels, providing immense headroom and drive capability across four independent loudspeaker zones without requiring external booster amplifiers.
Full 4-Channel Audio Matrix Routing Architecture
Allows any audio input—including the built-in Bluetooth media player, 3 combo microphone/line inputs, or external auxiliary sources—to be routed independently to any of the 4 zones simultaneously.
Simultaneous 100V & 8–16Ω Speaker Outputs
Each of the 4 zones supports simultaneous 100V commercial constant voltage lines for long ceiling speaker runs as well as direct 8–16Ω low-impedance taps for foreground hi-fi loudspeakers.
Integrated Bluetooth & Digital MP3 Media Player
Built-in commercial multimedia audio player supports wireless Bluetooth streaming, USB flash drives, SD memory cards, and a digital FM tuner with an informative front-panel status screen.
CAT6 Remote Paging Microphones & In-Room Wall Panels
Equipped with dual RJ45 bus interfaces supporting up to 8 remote multi-zone paging microphones (PA-4500RM) and up to 4 in-room remote control wall plates (PA-4500WP) over standard CAT6 cabling.
Balanced Combo XLR Inputs with 48V Phantom & VOX Priority
Features 3 universal combo XLR/jack inputs with independent 48V phantom power switches, input gain trims, and VOX priority override that automatically ducks background music during live announcements.
Emergency Remote Mute & Fire Alarm Integration
Includes dedicated emergency remote mute contact closure and EMC priority input to immediately override background music and interface directly with third-party building fire alarm systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | CMX PA-4500MX |
| Brand | CMX Audio |
| Product Type | 4-Zone Audio Matrix Mixer Amplifier with Bluetooth / USB / FM |
| Rated Power Output | 4 × 500 Watts RMS Continuous (2,000 Watts RMS Total) |
| Amplifier Architecture | 4 Discrete Power Channels with True 4-Channel Matrix Routing |
| Speaker Outputs | 100V Constant Voltage & 8–16Ω Low-Impedance per Zone (Simultaneous) |
| Integrated Audio Source | Built-In Bluetooth Receiver, USB Flash Drive, SD Card Player, Digital FM Tuner |
| Microphone / Line Inputs | 3 × Balanced Combo XLR / 6.35mm Jacks with Switchable +48V Phantom Power & Gain Trims |
| Auxiliary Line Inputs | 2 × Stereo RCA Line Inputs (775 mV / 10 kΩ) |
| Remote Control Bus | 2 × RJ45 Ports for up to 8 × PA-4500RM Remote Mics & 4 × PA-4500WP In-Room Wall Panels (CAT6) |
| Priority Levels | Mute > EMC > Mic 1 / Remote Paging Mics > Other Input Sources |
| Total Harmonic Distortion (THD) | < 0.1% at Rated Power |
| Signal-to-Noise Ratio (SNR) | > 80 dB |
| Tone Controls | Independent Bass (±10 dB) & Treble (±10 dB) Controls on Each Input Channel |
| Chime Generator | Built-In Master Pre-Announcement Chime with Dedicated Volume Control |
| Circuit Protection | Short-Circuit, Audio Clip Limiting, Overload, High-Temperature Thermal Shutdown |
| Power Requirements | AC 230V, 50/60 Hz Standard Mains |
| Form Factor | Standard 19-Inch 3U Rack-Mount Heavy-Duty Steel Chassis |
| Chassis Dimensions (W × D × H) | 484 mm × 405 mm × 132 mm (19″ 3U) |
| Net Weight | 19.5 kg |
Frequently Asked Questions
What makes the CMX PA-4500MX different from a standard 4-zone mixer amplifier?
Unlike standard mixer amplifiers that only route a single audio source to multiple zones with volume attenuators, the PA-4500MX is a true 4-channel audio matrix amplifier. It features four independent 500W power amplifier channels, allowing four completely different audio sources (e.g. Bluetooth in Zone 1, USB music in Zone 2, an external TV feed in Zone 3, and radio in Zone 4) to play simultaneously.
Can the PA-4500MX drive both 100V ceiling speakers and 8-Ohm hi-fi speakers?
Yes. Each of the four output zones provides dedicated terminals for both 100V commercial distributed lines (ideal for numerous ceiling speakers over long cable distances) and 8–16Ω direct low-impedance loads (ideal for higher fidelity foreground speakers).
How do remote wall panels and paging microphones connect to the PA-4500MX?
The amplifier features two dedicated RJ45 ports on the rear panel. Using standard CAT6 network cabling, you can connect up to 8 remote zone-paging microphones (PA-4500RM) and up to 4 in-room remote wall panels (PA-4500WP), allowing staff in individual rooms to select audio sources, adjust volume, or plug in a local phone/microphone.
How does priority override and fire alarm integration operate?
The PA-4500MX features a multi-tiered priority hierarchy: Emergency Mute > EMC Input > Mic 1 VOX / Remote Paging Mics > General BGM Sources. In an emergency, contact closure from the facility’s fire alarm system instantly mutes background music to allow critical evacuation announcements.
Do the microphone inputs support professional condenser gooseneck microphones?
Yes. All three primary microphone inputs use balanced combo XLR/6.35mm jacks and include individual dipswitches to supply +48V phantom power, ensuring compatibility with high-end condenser paging microphones and dynamic mics alike.
Engineer Your Perfect Commercial Audio & Visual Environment
Contact our AV specialists for professional product selection, system integration, and turnkey installation support.
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ProjecXive India –
The {‘author’: ‘ProjecXive Commercial Audio Specialist’, ‘author_email’: ‘support@projecxiveindia.in’, ‘rating’: 5, ‘content’: ‘The CMX PA-4500MX is an absolute powerhouse for commercial audio installations. Featuring 4 discrete 500W amplifier channels (2000W total), true 4-channel matrix routing, simultaneous 100V and 8-Ohm outputs, and comprehensive CAT6 remote panel/microphone integration, it provides an unbeatable multi-zone public address and music distribution platform.’} is an excellent choice for commercial and professional AV installations. It delivers outstanding performance, reliable build quality, and seamless integration with standard AV infrastructure. Our team at ProjecXive India has verified this product for professional commercial use. Highly recommended for system integrators and AV designers.