Digital Signal Processing - QSC DXP Series User Manual

Introduction
The DXP adds new capabilities to the DCP line of Digital Cinema Processors, creating a powerful solution for today's networked D-Cinema audio
systems. From server to speakers, the DCP and DXP combine to offer a complete set of tools to facilitate all the signal processing, audio distribution,
monitoring and automation control services required in a modern D-Cinema sound system.
A single DXP provides all signal processing and monitoring functions for up to 12 DCA Amplifi ers connected via DataPort connectors. The DXP also
offers relays and contact closure inputs to interface with automations and other theatre systems like masking, dimmers, and curtain, as well as a Mic/
Line input to facilitate connection of podium microphones in multi-use facilities.
The DCP and DXP communicate via CobraNet on a standard Ethernet infrastructure. Up to two DXP's may be connected to each DCP. The DXP
requires a DCP for operation.
The DXP provides advanced DSP presets for QSC's Digital Cinema Speakers (DCS), the DXP optimizes loudspeaker performance while simplifying
cinema sound system wiring and confi guration. The DXP can provide crossovers for bi-amp, tri-amp or quad-amp operation or it can be used to power
full range systems like surround channels.
The use of standard Ethernet infrastructure allows the power amplifi ers for the screen channels and subwoofers to be mounted near the speakers,
eliminating long and expensive speaker cables and conduit. The DataPort connection through the DXP allows the remote-mounted amps and speakers
to be fully monitored and controlled from the DCP.
The DCP/DXP combination is more than an audio processor. Whether designing a system for a single auditorium or designing a large multiplex, the
DCP and DXP together offer the fl exibility in confi guration, networking, audio distribution and advanced management services to get the job done.
Features
• The DXP accepts 16 Digital inputs via CobraNet. It supports crossover processing for up to 5 screen channels or up to 6 Auxiliary (point
source) channels.
• Analog Mic/Line Input
• Compatible with all existing QSC DCA amplifi ers
• Dual internal power supplies seamless recovery in the event of a failure
• Continued development of software and fi rmware will add new capabilities via easy updates

Digital Signal Processing

The DXP digital signal processing capability outperforms traditional analog crossovers and equalizers for optimized speaker performance. Crossover
frequency, parametric equalization, polarity, delay and gain can be precisely adjusted for each speaker in your system. Active 2-way, 3-way and 4-way
crossovers are available. Advanced crossover presets for QSC DCS speakers speeds system set-up and ensures maximum performance. Full range
outputs for surround channels are also supported.
Less Wiring, Faster Setup
The DXP greatly simplifi es system wiring and setup, signifi cantly reducing installation time and labor cost. Input to the DXP is provided via standard
Ethernet hardware via CobraNet from the associated DCP. Digital audio is routed over the network from the DCP to the DXP. The use of QSC's HD-15
DataPort cables to connect the DCA amplifi ers to the DXP speeds installation as all traditional XLR and barrier strip terminations are eliminated.
DCP and DXP processors simplify setup by using a menu-driven, PC-based software program for confi guration. The program includes a speaker data
fi le that lists default parameters for popular cinema speaker models. Commonly used confi gurations can also be saved on a disk, or redistributed
across a network, allowing easy transfer of settings to the DXP. All confi guration data may be saved to an SD memory card in the DCP, allowing easy
transfer of settings to a new (backup) DCP or DXP, should replacement ever be required.
Advanced Monitor and Control Functions
In addition to audio monitoring of amplifi er inputs and outputs, the DXP includes QSC's exclusive "load fault" detection. The DXP monitors all
amplifi er outputs and indicates opens and shorts in the speaker system, providing confi rmation that all amplifi er outputs are functioning properly. In
addition, the DXP detects all amplifi er clipping and protect modes, and heat sink temperature. The DXP can also turn amps off and on, and control
external devices via the four relay outputs.
DCP Connect applications for iOS and Android mobile devices provide system control, fault reporting, and diagnosis, accessible through remote wi-fi
network access throughout a cinema multiplex.
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