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Galaxy Audio DSPOT DS-CP25 User Manual

Digital signal processor

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DS-CP25
USER'S MANUAL
L
IN
R
IN
L
OUT
R
OUT
L
COMP
R
COMP
®
DS-CP25
USB
Multi-Band Compressor
USB
USB
19"
DIGITAL
DIGITAL
(482mm)

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Summary of Contents for Galaxy Audio DSPOT DS-CP25

  • Page 1 DS-CP25 USER’S MANUAL COMP COMP ® DS-CP25 Multi-Band Compressor 19" DIGITAL DIGITAL (482mm)
  • Page 2: Table Of Contents

    Introduction Introduction Thank you for choosing a Galaxy DSPOT Digital Signal Processor. You have joined hundreds of thousands of other satisfied Galaxy customers. Since 1977 Galaxy Audio’s professional experience in design and manufacturing ensure our products’ quality, performance and reliability.
  • Page 3: Safety Instructions

    Safety Instructions Safety Instructions This symbol indicates that dangerous voltage This symbol indicates that there are important Constituting a risk of electric shock is present Operating and maintenance instructions in the within this unit. Literature Accompanying This Unit ! IMPORTANT SAFETY INSTRUCTIONS ! USE only with a cart, stand, tripod, bracket, or table READ these instructions.
  • Page 4: Overview

    Overview Described below are the functions of the front panel control buttons and encoders for the DS-CP25. COMP COMP ® DS-CP25 2 3 4 10 11 12 13 14 15 16 17 18 1 - LCD Display 2 - Navigation/Parameter Key 3 - Parameter 2 Key 4 - Enter Key 5 - Escape Key...
  • Page 5: Getting Started With Front Panel Controls

    Getting Started • Getting Started As soon as the DS-CP25 is turned ON, the device model name will appear in the LCD screen: Multi-Band Compressor DSP Processor And a status bar will show the progress of the DS-CP25 initialization process: Multi-Band Compressor The DS-CP25 has the possibility to store/recall up to 20 presets.
  • Page 6 • Encoders and ENTER, ESC buttons The DS-CP25 is equipped with 3 Relative Encoders, “NAV/PM1”, “PM2” and “PM3”. These encoders allow you to navigate the user interface and edit sections of the processor. They allow the user to navigate within the screen for the selection of sub-menus, pages and parameters and to select the values to be assigned during the editing operations.
  • Page 7 MENU “LCOMP/RCOMP” RMS Compressors Editing [Access by pushing the “Lim/Comp” - “Edit/Bypass” buttons] This Menu is related to the editing of the RMS compressors parameters and to the selection of the number of bands for the DS-CP25 compressor to work with. The DS-CP25 can work as Monoband, 2 or 3 bands stereo compressor.
  • Page 8 From the “System Utilities Sub-menu”, pushing “ENTER” and then using the “NAV/PM1” encoder for scrolling will give access to the following pages: Power-On Procedure - this gives you the ability to select the option that will apply when the DS-CP25 powers up after being switched on: SYSTEM UTILITY: Power On Procedure...
  • Page 9 Input Routing - the DS-CP25 Processor is equipped with 2 Analog Inputs (Balanced Female XLR) and a stereo S/PDIF Digital Input (RCA connector). The “Routing Options” page allows you to select the desired Input type: SYSTEM UTILITY: Input Routing By pressing “ENTER” on Input Routing and then rotating the “PM2” or “PM3” encoder, it is possible to select the Main Inputs for the DS-CP25, allowing the User to choose between Analog or S/PDIF Digital.
  • Page 10 If presets have previously been stored by the user, any one of them can be recalled: [ENTER] to Recall 01: PRESET 1 By using the “PM3” encoder it is possible to scroll through the stored presets. Once the desired preset appears on the screen, select it by pressing the “ENTER”...
  • Page 11 Save a Program 10: Light Comp 3b To store the Preset Name, press the “ENTER” button again. The above action will take you to the “Enter to Save” page showing the selected location for the preset and the final edited name: [Enter] to Save 10: Light Comp 3b Pressing “ENTER”...
  • Page 12 By pressing the “ENTER” button and rotating the “PM3” encoder, it is possible to scroll through the previously saved presets and the available empty locations (identified by “Empty Memory”). If no user presets are stored, the “Delete a Program” screen will show empty memory locations for all 1-20 presets as shown in the example below for location 10: Delete a Program 10: Program...
  • Page 13 From “Interface Utilities”, press “ENTER” to access the Interface Setup. Interface Setup - this screen allows you to choose the remote control protocol for the DS-CP25. INTERFACE UTILITY: Interface Setup By pressing “ENTER” and then using the “PM2” or “PM3” encoder you can choose between the two possible interfaces (USB or RS485) for the DS-CP25.
  • Page 14 Using the “PM3” encoder to choose a character and the “NAV/PM1” encoder to move between available locations you can enter a 6 Character Password Name. The current position of the cursor for the characters to be entered is shown by a “blinking underscore”. During this editing phase, the display is as follows if we were using “DSCP25”...
  • Page 15 • Menu “Input LIN/RIN” - Input Channel. Eq. Editing [access by pushing the “EQ Edit/Mute” buttons] From the “Default Screen”, it is possible to access the “Input LIN/RIN” menu by pushing the “EQ Edit/Mute” buttons at the bottom of the LIN or RIN LED bars. Once the button is pressed, the related blue “EDIT” LED will turn ON.
  • Page 16 HPF sub-menu - from this sub-menu, it is possible to set the Input Channels High Pass Filter (HPF), preceding the bank of 5 Peaking/Shelving filters. The following is an example of a HPF sub-menu screen with the filter set at 24dB Linkwitz/Riley on Channel A/Left: OutputA Left ->...
  • Page 17 The available shapes and orders for the Low Pass Filter that are accessible by rotating the “PM3” encoder are listed below: - No Cut-Off (Low Pass Filter Bypassed) - Butwrth 6dB (Butterworth Filter 6dB/Oct Slope) - Butwrth 12dB (Butterworth Filter 12dB/Oct Slope) - Lnk/Ril 12dB (Linkwitz/Riley Filter 12dB/Oct Slope) - Bessel 12dB (Bessel Filter 12dB/Oct Slope) - Butwrth 18dB (Butterworth Filter 18dB/Oct Slope)
  • Page 18 Still rotating the “PM2” counter-clockwise, the Shelving filters and their order will be selectable in the following sequence: 1. 1st Order Low Shelving = -6LoSh [on the screen] 2. 2nd Order Low Shelving = -12LoSh [on the screen] 3. 1st Order High Shelving = -6HiSh [on the screen] 4.
  • Page 19 Once in the Low Shelving Filter’s edit screen, all the filter’s parameters can be modified using the “NAV/PM1”, “PM2” and “PM3” encoders for editing the Filter’s High Cut Frequency, Filter’s Order and Gain. The Hi Cut Frequency of the Low Shelving Filter can be edited using the “NAV/PM1”...
  • Page 20 • Menu “AGC and Output Limiter” Editing [access by pushing “Lim/Comp - Edit/Bypass” buttons] From the “Default Screen”, it is possible to access the “AGC and Output Limiter” menu by pressing the “Lim/Comp - Edit/Bypass” buttons at the bottom of the LOUT or ROUT LED bars. Once pressed, the related blue “EDIT”...
  • Page 21 Before proceeding to illustrating the editing and setting of the AGC parameters, it is good to remember how an AGC (Automatic Gain Controller) works. Refer to the following picture: The AGC is an Expansion/Compression process applied with slow Attack and Release times, to the INPUT signal of a Unit, in order to maintain the average amplitude of the OUTPUT signal at a defined level, independently from the average amplitude of the input sources.
  • Page 22 When the Signal coming out of the AGC process (Output), applied to the AGC input, is above the “Cmp Thr”, it is compressed up to the minimum compression coefficient defined by the “Cmp Ratio”. When the AGC output is comprised within the “Thr Hold” and the “Cmp Thr”...
  • Page 23 AGC Cmp Thr page - from this screen, it is possible to set the AGC Compression Threshold from -10dBu up to +20dBu. Press “ENTER”, an arrow will appear on the left of the screen “->” then use the “PM3” encoder. The following is an example screen for the “AGC Cmp Thr”...
  • Page 24 Delay page - from this page, it is possible to set the Output Channels Delay Time from 000.0000ms up to 848.9984mS, by steps of 1mS or 20.8uS. To set the Delay time, press “ENTER”, an arrow will appear on the left of the screen “->” then use the “PM2” encoder to set the Delay Time in steps of 1mS and the “PM3”, for setting the “fine”...
  • Page 25 “Attack Time [A]” - the selectable range of the Peak Limiter’s Attack Time is from 5ms to 200ms, in steps of 1ms from 5ms to 20ms, then in steps of 5ms from 20ms to 30ms, then in steps of 10ms from 30ms to 100ms, and then in steps of 20ms from 100ms to 200ms.
  • Page 26 Menu “RMS Compressors Editing [Access by pushing the “Lim/Comp - Edit/Bypass” buttons] ” Ÿ From the “Default Screen”, it is possible to access the “RMS Compressors” menu by pressing the “Lim/Comp - Edit/Bypass” buttons at the bottom of the 3xLCOMP or 3xRCOMP LED bars. Once pressed, the related blue “EDIT”...
  • Page 27 The DS-CP25 multi band compressor, can operate as 3 bands, 2 bands or Mono band compressor unit. Because of that, within the Compressors Menu there are up to 3 common control pages, allowing the user to set the number of bands for the compressor and, independently from this selection, to set the X-Over frequencies for the definition of the 3 or 2 bands.
  • Page 28 CrossOver 1 page - when the DS-CP25 is set in Mono Mode, “1 band”, this page is not available and the RMS single compressor will act on the overall input band. When the DS-CP25 is set as “2 band” compressor, then from this page it is possible to set the Cross Over frequency, separating the 2 bands, dividing the full one.
  • Page 29 When set with the above controls, the Compressor’s number of bands and eventually the X-Over frequencies, each compressor operating on each single band is an RMS Compressor working as shown by the following picture: The RMS Compressor is a Compression process, applied with fast slow Attack and Release times to the INPUT signal of a Unit, in order to maintain the amplitude of the OUTPUT signal at a defined level, when input level is exceeding a defined intervention Threshold.
  • Page 30 Attack Time page - from this page, it is possible to set the Attack Time parameters of the RMS Compressor. Upon pushing “ENTER”, the RMS Compressor’s Attack Time editing page can be entered and using the “PM3” encoder, the “Attack Time” parameter can be set. OutputA Left Cmp1 ->...
  • Page 31 Ratio page - from this page, it is possible to set the “Knee” type of the RMS Compressor. Upon pushing “ENTER”, the RMS Compressor's Knee editing page can be entered and using the “PM3” encoder, the Ratio” parameter can be set. “...
  • Page 32 • LED Meter Bars The DS-CP25 has on its front panel, 10 LED meter bars, able to show constantly the overall status of the processed signals. Logically, the LED meter bars can be divided in 2 different blocks: 1. LED Meter Bars for the Clip/lnput level displaying 2.
  • Page 33: Using The Pc Interface

    Using the PC Interface Using the DS-CP25 Software. Load the Software “SetupDS-CP25V1.0.0” either with the included CD or via the Galaxy Website. Double click on “Setup”, choose “Run” the software will load. Go to programs and double click on DS-CP25V1.0.0 Connect the SDS-CP25 with the USB cable to your computer.
  • Page 34 The software will look for active devices and show them in a list. To edit Double click on the desired device in the ID list. The Main Page will load.
  • Page 35 The device will also be locked out from front panel control at this point. You may choose to “Load Preset from PC”, “Save Preset to PC”, “Store Preset to Device”, “Read Preset from Device” You can name a device by selecting edit device name. From the main page you can choose the section you want to adjust by clicking on the associated block.
  • Page 36 Select the PEQ or crossover block to access the filters. Select the Compressor Block to access the Compressor page.
  • Page 37 Select the Limiter Block to access the Limiter page. Select the Delay block to access the delay page.
  • Page 38 Select the AGC Block to access the AGC page. You can copy parameters between channels by selecting the copy channel block and then selecting the source parameters and the destination.
  • Page 39: Specifications

    Specifications • DS-CP25 Technical Specifications Made in China The DS-CP25 Digital Speaker Processor is based on a powerful analog and digital DSP platforms having the following specifications: Analog Input Signal: ChA/ChB Bal. Female XLR Maximum Input Level: +20dBu Analog Output Signal: Ch1/Ch2 Bal. Male XLR Maximum Output Level: +20dBu Digital Processing (DSP): SAM3716, 24bits (data) x 96 bits (coeff.) A/D Converters: AKM5392, 24bits...
  • Page 40 Information can be viewed online at http://www.galaxyaudio.com/warranty.php DS-CP25 Specifications in this manual are subject to change without notice. For the most up to date manual and information visit www.galaxyaudio.com. 1-800-369-7768 www.galaxyaudio.com © Copyright Galaxy Audio 2014 V02062014 Printed in China...