CXD4.5Q Network Processing Amplifier, 4 Channels, Class-D

The QSC CXD4.5 Processing Amplifier from CXD Series is designed specifically for the needs of integrators. It provides efficient, robust, and high-fidelity power to drive multiple channels and configurations of loudspeakers. It simultaneously deploys sophisticated digital processing with optimal energy and rack space efficiency. This 4-channel amplifier with onboard DSP has the capability to configure and combine channels in various ways to drive a wide range of loudspeaker systems including 70V and 100V without the use of transformers. This amplifier not only provides the power and processing to make your system perform better, it also offers efficiency ensuring that energy consumption will be kept to a minimum over the life of the installation. The CXD4.5 Processing Amplifier features FAST (Flexible Amplifier Summing Technology) that actively distributes the total amplifier power in various configurations across 1, 2, 3, or all 4 outputs. Moreover, this power can also be used to drive 70 or 100V speaker lines directly from any 1 or all of the 4 outputs. This flexibility allows this amplifier to drive (for example) 2 full-range surface mounted speakers along with a subwoofer and a 100V distributed speaker line; or a high-power subwoofer and a bi-amplified full-range loudspeaker; three 70V distributed speaker lines and a low impedance surface mount speaker line; or a single high-power channel driving monster subwoofers. This amplifier uses QSC’s class-D power amp design in combination with a custom power stage utilizing an output device. This purpose built MOSFET device provides high voltage operation without needing a full bridge output and offers good audio quality and thermal performance due to co-location of the semiconductors. The CXD4.5 Processing Amplifier benefits from the PowerLight power supply and Power Factor Correction (PFC) that aligns the current waveform with the AC mains voltage waveform. PFC enables the amplifier to draw current from the wall in an efficient and controlled manner resulting in power from a single standard AC breaker. This amplifier also incorporates several energy conservation and efficiency strategies. One such tool is the multi-stage sleep mode that saves energy when possible without sacrificing performance. This Processing Amplifier also doubles as a loudspeaker processor. Integration of DSP and amplification means that the processor knows exactly what the amplifier is doing, allowing the dynamics processing and protection circuitry to be accurate and effective. This synergistic approach employs both RMS and Peak Limiters that provide the amplifier and loudspeaker combination to produce more output without being pushed to distortion or destruction. The onboard DSP offers 4 channels of crossover filters, parametric EQ, alignment delay, and dynamics processing. Additionally when using QSC loudspeakers (sold separately), this amplifier offers Intrinsic Correction, a combination of filtering, limiting, and speaker processing, which compensates for the non-linearities in array and horn design, resulting in good performance.

• Seamless Q-SYS integration with audio transport and control via standard Gigabit Ethernet protocols and hardware
• Capable of providing up to 5,000 W continuous and 8,000 W peak with 70V/100V direct drive on the CXD4.3Q and CXD4.5Q
• Flexible Amplifier Summing Technology™ (FAST) permits total amplifier power to be distributed across one, two, three or all four channels
• PowerLight universal switchmode power supply with PFC for highest effiency, improved audio performance, and low weight.
• Mic/Line input Euroblock connectors and touch-proof Euroblock loudspeaker connections
• Eight bi-directional GPIO connections that can be used for analog or digital inputs or outputs to/from Q-SYS
• Built-in energy saving modes ensure that the amplifier will draw the minimum amount of AC power while still providing outstanding audio quality
• Q-SYS technical support is available 24/7-worldwide