Digital Audio Products 4.24C 24 Bit Digital Crossover and System Processor Operating Manual A S H LY A U D I O I N C . 8 4 7 H o l t R o a d Webster, N Y 1 4 5 8 0 - 9 1 0 3 P h o n e : ( 5 8 5 ) 8 7 2 - 0 0 1 0 Toll-Fre e : ( 8 0 0 ) 8 2 8 - 6 3 0 8 F a x : ( 5 8 5 ) 8 7 2 - 0 7 3 9 w w w. a s h l y.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor Table Of Contents 2 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1 Audio Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNPACKING . . . . . . . . . . . . . . . . . . . . . .
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 6 PROTEA SYSTEM SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 How to Get Protea System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 Installing Protea System Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3 Connecting the 4.24C to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 14 14 14 7 TROUBLESHOOTING . .
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.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 4. FRONT PANEL CONTROL FEATURES 4.1 Function Keys and Data Wheel System Processor 24 Bit Digital Crossover To the right of the LCD display Esc are two unlabeled function keys and a rotary data wheel. All audio and sysPreset 01 tem parameters are edited using these 4 x 2-way Crossover three controls.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor Input Gain LCD Display 4.6 Audio Functions 4.6a Gain Input and Output Gain are separately adjustable from -40dB to +12dB in 0.1dB increments. The output gain menu also provides for selection of input source(s) for a given output channel, as well as polarity of the outgoing signal. Input signal sources are A, B, C, D, A+B, C+D, all four inputs combined, or no input (Off).
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor Parametric EQ (PEQ) uses peak filters with the ability to control boost or cut, frequency center, and bandwidth. Think of one band of parametric EQ as a single graphic equalizer fader except that the frequency is variable, not fixed, and that the bandwidth, or how "wide" the filter affects the frequency spectrum at the center frequency, is completely variable.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor Input (Long) Time Delay For Remote Speakers Speaker on M ain Stage Secondary Speaker 200 ft from M ain Stage Sam e sound arrives at two different times. Fix by delaying secondary speakers 177m S. of the venue with direct line-of-sound to multiple loudspeakers.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor slope for every application, so experiment to see which one sounds most pleasing in a specific system. Ashly factory default presets use all 24dB/octave Linkwitz-Riley filters in the crossover section, but of course they can be changed to suit the application. Crossover illustration from Protea System Software, showing two way crossover at 1KHz.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 4.6e Limit A full function compressor/ limiter is included on each output channel. A limiter is commonly used to prevent transient audio signal spikes from damaging loudspeakers, manage analog and digital recording levels, optimize broadcast levels, or "thicken" the sound of an audio source (compression). The adjustable parameters include Limiter In/Out, Limiter Threshold, Ratio, Attack Time, and Release Time.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 4.7b Save Once the 4.24C has been adjusted to suit the application, the changes can be permanently saved to memory*. To save a new configuration or save changes to an existing preset template, begin the process by pressing the Save button once. The LCD display prompts for the new (or same) preset number, and after selecting the desired number press Save again.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor buttons 1-8 (recommended) or the data wheel (0-9) to enter a new code, then press Enter on the LCD. The LCD then prompts the user to either change the code to a new four digit number, or change the Security status to one of the other three options. The only way to fully remove a security code once it has been entered is with a factory reset.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor A Note About Input Signal Levels: There are no analog gain trim adjustments on the Protea 4.24C, therefore all the processing (including gain) is done in the digital domain. As a consequence of this design philosophy, it is important to feed the Protea processor with the proper nominal signal level to achieve good signal to noise performance as well as headroom before clipping. The Protea 4.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 6. PROTEA SYSTEM SOFTWARE Protea System Software version 3.1 - Crossover Section for 4.24C control. Ashly offers a powerful software control interface for the PC Windows environment, including separate control sections for the 4.24C crossover/processor, 4.24G graphic EQ (and slaves), the two parametric EQ slaves (2.24P and 4.24P), and the VCM-88, a high performance eight channel remote level controller. 6.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 7. TROUBLESHOOTING 7.1 - Audio Troubleshooting Tips No power - Is the detachable AC cord fully plugged in? Is the rear panel power switch on? Controls don't work - check the Security Level. If set to Full Lockout, then Protea unit is "view only". Change security settings in Util menu. No sound - Check to see if the input or output is muted.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 8. SPECIFICATIONS Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Active Balanced, 18KΩ Max. Input Level . . . . . . . . . . . . . . . . . . +20dBu Input Gain Range . . . . . . . . . . . . . . . . . . -40dB to +12dB Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . Active Balanced, 112Ω Max. Output Level . . . . . . . . . . . . . . . . . +20dBu Output Gain Range . . . . . . . . . . . . . . . .
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 9. DIMENSIONS 1. 75" 1. 50" 0. 0 0" 0. 25" 18. 75" 19. 00" 4. 24C Crossover 0. 25" 0. 0 0" 6. 00" 10. WARRANTY INFORMATION The unit you have just purchased is protected by a limited five-year warranty . To establish the warranty, be sure to read completely, fill out and return the warranty card that came with your product. Fill out the information below for your records.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor 11. PROTEA 4.24C INSTALLATION RECORD Installation _________________________ Installed by _________________ Date _____________________________ Venue Contact ______________________ Phone No.
Operating Manual - PROTEA SYSTEM II 4.24C Crossover / System Processor Output 3: Output EQ Source ______________ EQ Filter no. 1 EQ Filter no. 2 EQ Filter no. 3 EQ Filter no.
Operating Manual - PROTEA SYSTEM II 4.
