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QSC Audio DSP-4 manual Introduction

Models: DSP-4

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Introduction

The DSP-4 is a digital signal processor (DSP ) accessory for audio power amplifiers. It is designed to reduce the need for external signal processing while increasing overall system reliability through distributed intelligence. It is intended pri- marily for QSC’s CX, DCA, and Powerlight2 series amplifiers and mounts directly to the rear panel of the 2-RU, 2-channel models of these amplifiers (pre-August, 1999 date-code of the CX, DCA and Powerlight2, and all ISA models will require use of an external power supply). Use of the DSP-4 with Powerlight models requires remote mounting, external power supply and use of a special interconnect cable (PL6.0/9.0 only). Refer to the Appendix for application infor- mation. The DSP-4 can also be used with amplifiers that do not have a QSC DataPort (older QSC models, non-QSC mod- els) with a reduced feature set and remote mounting/exter- nal power.

The signal processing capabilities include Compres- sors, Limiters, multiple Parametric Filters, High- and Low- Pass Filters, Shelf Filters, Muting, Attenuation, Multiple Delays, Polarity Reversal, and Audio Routing. A new feature of the DSP-4 is amplifier output Power Limiting (QSC DataPort amplifiers only). Analog-to-digital and digital-to- analog converters are 24-bit resolution and 48 kHz. sam- pling rate. Post-processor audio outputs are daisy-chain- able for connection to additional amplifiers. Input sensitivity and output level is software selectable. Dynamic range is greater than 106 dB. Inputs are balanced and the post-DSP outputs are pseudo balanced.

Physically, the DSP-4 is a small module that “piggybacks” onto the back panel of the specified QSC amplifiers. It con- nects directly to the DataPort on the back panel and is secured with supplied hardware. When used with other

amplifiers, the DSP-4 is mounted remotely on a rack-mount accessory bracket providing a solid mounting platform. There are two LED’s; blue to indicate power status and green to indicate input signal presence.

Connections include an RS-232 port and a DataPort pass- through connector for use with QSC DataPort products . For non-DataPort applications, two XLR audio inputs and two XLR outputs (post-DSP) are provided. There is a power receptacle for use with amplifiers that do not provide DataPort power or with non-QSC amplifiers.

Control of the DSP-4is accomplished with the supplied QSC Signal Manager software and an RS-232 connection between the module and PC. The Signal Manager software provides an easy-to-use graphical user interface where DSP “objects” are placed onto a palette and connected. This interface allows for almost infinite configuration possibili- ties. Once the DSP-4 has been set up as desired and the configuration saved to the DSP-4, connection to the PC is no longer required. This feature allows essentially tamper- proof amplifier DSP set up. Further changes can be imple- mented in the field by simply connecting a PC and loading the new setup into the DSP-4.

Operation over an Ethernet network can be accomplished using QSC’s QSControl platform. Please refer to the soft- ware documentation (software Help file and Readme.txt file) for supported feature-set and operation information.

From all of us at QSC Audio, thank you for your purchase. Be sure to check our website at http://www.qscaudio.com for the latest software and firmware updates as well as sample DSP configurations.

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QSC Audio DSP-4 manual Introduction
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DSP-4 specifications

The QSC Audio DSP-4 is a state-of-the-art digital signal processor designed to deliver exceptional audio performance across various applications. This versatile device caters to the needs of live sound, installations, and broadcasting, making it a popular choice among audio professionals. With a robust feature set and advanced technologies, the DSP-4 ensures seamless integration and an unparalleled audio experience.

One of the standout features of the QSC DSP-4 is its powerful processing capabilities. Equipped with a high-performance quad-core processor, it can handle complex audio tasks efficiently, allowing users to manipulate audio signals in real-time. This ensures that even the most demanding audio environments can be managed smoothly.

The DSP-4 boasts a user-friendly interface, making it intuitive for both seasoned audio engineers and newcomers alike. The device comes with a comprehensive software suite that enables users to create and modify audio configurations with ease. The drag-and-drop functionality and visual representation of signal flow simplify the process of designing intricate audio setups.

In terms of connectivity, the QSC DSP-4 offers multiple input and output options, including digital and analog connections. This flexibility allows the device to integrate seamlessly with various audio systems, whether they involve microphones, musical instruments, or other audio sources. Moreover, it supports multiple audio formats, ensuring compatibility with a wide range of equipment.

Among the notable technologies in the DSP-4 is its advanced equalization capabilities. The device features graphic and parametric equalizers that allow for precise control over frequency response, enabling users to tailor the audio output to their specific needs. Additionally, the DSP-4 includes a variety of essential audio processing tools such as compression, gating, and delay, further enhancing its functionality.

The QSC DSP-4 is designed with reliability in mind, featuring robust construction and advanced thermal management to ensure stable operation in demanding environments. Its compact form factor allows for easy installation, whether in racks, on shelves, or in custom setups.

Another noteworthy aspect of the DSP-4 is its scalability. Users can easily expand their audio setups by linking multiple units together, allowing for larger projects or more complex configurations without sacrificing performance. This scalability, combined with the device's rich feature set, makes the QSC DSP-4 a powerful tool for any audio professional.

In summary, the QSC Audio DSP-4 is a highly capable digital signal processor that combines advanced processing power, user-friendly design, and extensive connectivity options. Whether for live events or permanent installations, the DSP-4 stands out as an essential component in delivering superior audio quality.