Ashly PROTEA SYSTEM II 4.24C Bedieningshandleiding - Pagina 4
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Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor
1. INTRODUCTION
Thank you for your purchase of this Ashly Protea 4.24C Digital Crossover/System Processor.
The Protea SYSTEM II series builds on the tradition of quality and value which has earned Ashly its
place as a market leader in crossovers, equalization, and signal processing.
Your new 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. For
even faster set-ups and stronger visualization of Input/Output routing, EQ, and Filter curves, an RS-
232 PC port is provided for use with Windows™ Protea System Software. Full control is also avail-
able via MIDI input and output jacks.
1.1 AUDIO FEATURES
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 Fil-
ters, 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.
1.2 USER INTERFACE
Front Panel Interface: A backlit 2 x 20 character LCD displays channel and function settings. Dedicated
buttons provide access to all audio functions and system tools. The display indicates the current preset number, then
subsequently shows the selected input or output and its active control parameters. Five segment LED arrays on each
input and output provide audio level information and mute status.
Protea System Software: The computer interface uses Ashly PROTEA SYSTEM SOFTWARE for Windows,
which allows complete PC control of the 4.24C through an RS-232 serial port. Protea system software is supplied with
each unit, or can be downloaded at no cost from the Ashly web site. Advantages of using the software include greater
preset capacity, and a very intuitive visual representation of the audio routing and control process.
2. UNPACKING
As a part of our system of quality control, every Ashly product is carefully inspected before leaving the
factory to ensure flawless appearance. After unpacking, please inspect for any physical damage. Save the shipping
carton and all packing materials, as they were carefully designed to minimize the possibility of transportation damage
should the unit again require packing and shipping. In the event that damage has occurred, immediately notify your
dealer so that a written claim to cover the damages can be initiated. The right to any claim against a public carrier can
be forfeited if the carrier is not notified promptly and if the shipping carton and packing materials are not available for
inspection by the carrier. Save all packing materials until the claim has been settled.
3. AC POWER REQUIREMENTS
Note: The AC power switch for model 4.24C is on the back panel. The Protea 4.24C uses a universal input
power supply which will accept any line voltage in the range of 80VAC to 260VAC, 50-60Hz, and is exceptionally
resistant to voltage dips, or "brown outs". A standard IEC-320 grounded AC inlet is provided on the rear panel to
accept the detachable power cord. Never remove the AC earth ground connection to the 4.24C. In the event of fuse
failure, refer the product to a qualified service technician for fuse replacement, replacing only with the same type and
rating fuse.
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