4-In x 8-Out DSP Processor

 The 4.24C is a four input/eight output digital signal processor capable of precise control of a broad range of audio functions. The front panel interface allows quick access to all control parameters by offering dedicated function buttons, eliminating the need for hidden sub-menus. A backlit 2 x 20 character LCD displays channel and function settings. Dedicated buttons provide access to all audio functions and system tools. For even faster set-ups and stronger visualization of Input/Output routing, EQ, and Filter curves, an RS-232 port is provided for use with Ashly's control software (Protea Software Suite) and a PC. Advantages of using the software include greater preset capacity, and a very intuitive visual representation of the audio routing and control process. Full control is also available via MIDI input and output jacks.

The Protea 4.24C utilizes state of the art DSP technologies, beginning with 24 bit, 48kHz delta-sigma A/D converters with 128x oversampling. Digital processing includes Gain, Polarity Invert, Parametric EQ, Shelving Filters, Time Delay, Crossover Functions, Compression, Limiting, and Signal Routing, all taking place in twin 120MHz Motorola DSP56362 high performance DSP processors. D/A conversion uses 24 bit delta-sigma converters with 128x oversampling. All inputs and outputs are precision balanced and RF protected using XLR connectors.

Each input allows you to control gain, delay and six filters (each of them your choice of parametric, low or high shelf). In addition to setting crossover frequencies, each output may be assigned to any one or a combination of inputs, allows you to program four parametric, low or high shelf filters, delay for time delay adjustments, output gain, reverse polarity and a compressor/limiter for speaker protection. All this in one rack space with XLR input and output connections.

In all, the Protea 4.24C is a powerful, easy to use processor for use in live sound or fixed installation applications combining precise audio processing and superior sound.

Features

One Rack Space
Four Inputs - Eight Outputs
Extremely Intuitive User Interface
Crossover, EQ, Delay and Limiter Functions
Outputs Assignable to Any Input
Superior Sonic Quality
Front Panel, PC or MIDI Programming and Control
Third Party Control Friendly
XLR Audio Connections
Balanced Inputs and Outputs
Parametric Filters and Comp/Limiter to Control Feedback Problems
Linkwitz-Riley, Bessel and Butterworth Filters
12, 18, 24 and 48dB/Octave Slopes
Parametric EQ: 1/64th to 4 Octave Range
Input and Output Delay
Limiter on Each Output
Individual Input and Output Metering
Four Levels of Security

Applications

Conventional PA Systems
FOH
Monitors
Aux fed subs
L-C-R configurations
Multi-zoned systems