Galaxy Audio DSPOT User manual

USER’S MANUAL
DS-SP24
2x4 Speaker Processor
USB
USB
(482mm)
19"
DIGITAL
DIGITAL
®
DS-SP24

1
Contents
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.
For the most up to date manual and information
visit www.galaxyaudio.com.
Introduction..........................................................................................1
Safety Instructions................................................................................ 2
Overview...............................................................................................3
Getting Started with Front Panel Controls........................................ 4 - 27
Using the PC Interface.................................................................. 28 - 34
Volume Controls Table................................................................. 35 & 36
Specifications..................................................................................... 37

2
Safety Instructions
Safety Instructions
!
IMPORTANT SAFETY INSTRUCTIONS !
READ these instructions.
KEEP these instructions.
HEED all warnings.
FOLLOW all instructions.
DO NOT use this apparatus near water.
CLEAN ONLY with dry cloth.
DO NOT block any ventilation openings. Install in accordance with the manu-
facturer's instructions.
DO NOT install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.
DO NOT defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wider blade or the third
prong are provided for your safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet.
PROTECT the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
ONLY USE attachments/accessories specified by the manufacturer.
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11.
This symbol indicates that dangerous voltage
Constituting a risk of electric shock is present
within this unit.
This symbol indicates that there are important
Operating and maintenance instructions in the
Literature Accompanying This Unit
UNPLUG this apparatus during lightning storms or when unused for long periods of
time.
REFER all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is dam-
Aged, liquid has been spilled or objects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not operate normally, or has been
dropped.
DO NOT expose the apparatus to dripping and splashing. DO NOT put objects filled
with liquids, such as vases, on the apparatus.
USE only with a cart, stand, tripod, bracket, or table
Specified by the manufacturer, or sold with the
Apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
Remove the batteries from the receiver if the system will not be used for a long
period of time. This will avoid any damage resulting from a defective, leaking
battery.
DO NOT throw used batteries into a fire. Be sure to dispose of or recycle used
batteries in accordance with local waste disposal laws.
12.
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®
DS-SP24
Overview
Described below are the functions of the front panel control buttons and encoders for
The DS-SP24.
1 2 3456 7 8 9 10 11 12 13
1 - LCD Display
2 - Navigation/Parameter 1 Key
3 - Parameter 2 Key
4 - Enter Key
5 - Escape Key
6 - Utility Key
7 - Parameter 3 Key
8 - Input A Edit/Mute Button
9 - Input B Edit/Mute Button
10 - Output 1 Edit/Mute Button
11 - Output 2 Edit/Mute Button
12 - Output 3 Edit/Mute Button
13 - Output 4 Edit/Mute Button
3

The DS-SP24 has two factory pre-set working modes: “1x2 Way X-Over” and “4 Way X-Over”.
After the initialization, the DS-SP24 will show on the LCD the first of the embedded preset working
modes, or the last one selected prior to the unit being turned off.
First time activation will default to the first of the preset working modes.
Getting Started
When the DS-SP24 is turned ON the device model name will appear in the LCD screen:
A status bar will show the progress of the DS-SP24 initialization process:
DS-SP24
1x2 WAY X-OVER
DS-SP24
GALAXY Audio
DS-SP24
Getting Started Using Front Panel Interface
4

• Encoders and ENTER, ESC buttons
The DS-SP24 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.
The “ENTER” and “ESC” buttons allow the user to confirm or NOT confirm the operations
performed by the encoders.
• UTILITY, A/B and 1/2/3/4 buttons
The UTILITY button allows the User to enter the Sub-menus and set the general characteristics of
the Processor. The A and B buttons allow the User to enter the Editing Menus of the Processor's
Input Channels and buttons 1, 2, 3 and 4, allow the User to enter the Editing Menus of the
Processor's Output Channels.
The A and B buttons as well as the 1, 2, 3 and 4 buttons have double functions dependent on the
push and hold time.
When the A and B buttons are pushed and held for more than one second Input Channels A or B
are either MUTED or UN-MUTED. The red LED will illuminate when the Channel is MUTED. When
the “MUTE” LED is OFF, then the related Input Channel is UN-MUTED.
A momentary push of the A and B buttons enters the Editing Mode for the Input Channels (see
later for the Input Channel Editing details).
The blue “EDIT” LED will now be ON.
When the 1, 2, 3 and 4 buttons are pushed and held for more than one second the Output Channels
1, 2, 3, and 4 are either MUTED or UN-MUTED. The red LED will illuminate when the Channel is
MUTED. When the “MUTE” LED is OFF, then the related Output Channel is UN-MUTED.
A momentary push of the 1, 2, 3 and 4 buttons enters the Editing Menu for the Output Channels
(see later for the Output Channel Editing details). The blue “EDIT” LED will now be ON.
• DS-SP24 Menu and Sub-Menu Structures
As stated above, the start-up default screen is the following factory preset:
From this point, sub-menus are accessed using the “UTILITY”, “A/B”, “1/2/3/4”, “ENTER” and
“ESC” buttons and all parameters and values are navigated by the “NAV/PM1”, “PM2” and
“PM3” encoders. Please refer to the following menu structures:
DS-SP24
1x2 WAY X-OVER
5

● Menu “UTILITY” [access by pushing the “UTILITY” button]
From the “Default Screen”, it is possible to access the “UTILITY” menu by pushing the “UTILITY”
button and the Sub-Menus pages can be selected by rotating the “NAV/PM1” encoder clockwise
and counter-clockwise.
Once selecting the sub-menu page, using the “ENTER” button will access the Sub-Menu pages,
again “scrollable” using the “NAV/PM1” encoder and accessible for parameter editing again
pushing the “ENTER” button.
Through the “ESC” button, it is any time possible to go back to the page preceding the “ENTER”
button use.
Once inside the Sub-Menus pages, several options can be scrolled and using the PM2 or PM3
encoders and selected/confirmed pushing the “ENTER” button.
Note: In every Sub-Menu the option currently selected/running will have an asterisk “ * ” showing
to the right of the description on the LCD screen.
Options that are not selected/running will be displayed without an Asterisk.
Pushing the ENTER button on an unselected option will mean an asterisk will then appear and this
option will now take over as the currently selected/running option.
System Utilities Sub-menu – this sub-menu allows to access several operations related to the
DS-SP24 Start Up and General Configuration:
From the “System Utilities Sub-menu”, pushing “ENTER” and then using the “NAV/PM1”encoder
for scrolling will give access to the following pages:
– System Setup: this page allows the selection of the operating mode of the DS-SP24:
The operating mode can be chosen from a selection of 2 Xover options
1x 2 WAY ........ .in this operating mode, the DS-SP24 is configured as a 2 Input to 4 Output X-Over,
where the 2 Inputs are automatically assigned to the Outputs as follows:
– Input A to Outputs 1/2 [Out1=LowA and Out2=HighA]
– Input B to Outputs 3/4 [Out3=LowB and Out4=HighB]
4 WAY ....... . .in this operating mode, the DS-SP24 is configured as a Mono Input to 4 Output
X-Over, where the Input A is automatically assigned to the Outputs as follow:
– Input A to Outputs 1/2/3/4 [Out1=Band-1, Out2=Band-2, Out3=Band-3 and Out4=Band-4]
By pressing ENTER on the System Setup page and rotating the “PM2” or “PM3” encoder, it is
possible to select all the available X-Over preset modes.
UTILITY MENU
- System Utilities -
SYSTEM UTILITY
- System Setup -
6

When the “1x2 WAY XOVER” is selected, the “System Setup” page will appear as follows:
To change the desired operating mode for the DS-SP24, the screen must reflect the X-Over
required and then simply pressing the “ENTER” button will bring up the following screen asking for
confirmation to load the selected operating mode:
If confirmed by pressing ENTER the selected preset mode will load. While the device is configuring
the X-Over the following screen will be appear:
The new preset mode will now be shown with an asterisk.
– Input Routing: the DS-SP24 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:
By pressing ENTER on Input Routing and then rotating the “PM2” or “PM3” encoders, it is possible
to select the Main Inputs for the DS-SP24, allowing the User to choose between Analog or S/PDIF
Digital.
The selection can be confirmed by pressing the “ENTER” button.
The following screen shows that the Analog Input has been selected:
System Setup
Setup: 1x2 WAY XOVER *
New Xover
[Enter] to confirm
Please Wait . . . . .
Changing Xover
Input Routing
Source: Analog *
SYSTEM UTILITY
- Input Routing -
7

– Delay Time/Distance: this page allows you to select the measurement unit to be used for
the Delays: Time (in milliseconds “ms”) or Distance (in meters:“m”)
By pressing ENTER and rotating the “PM2” or “PM3” encoder, it is possible to select the
measurement unit to be used for the delay, which will be confirmed by pushing the ENTER button.
The following screen shows the selected delay measurement is Time (milliseconds):
SYSTEM UTILITY
- Delay Units -
Delay Units
Unit : Time (ms) *
– Software Version:
This page allows you to confirm the Software Version running on the DS-SP24:
Program Utilities Sub-menu – this sub-menu allows you to access several options related to
the DS-SP24 operating mode and to manage the presets stored and recallable within the Unit:
By pressing the ENTER button and then using the “NAV/PM1” encoder the following pages can be
accessed:
– Recall a Program: this page allows the Loading of a preset program. You can store up to 24
presets in the DS-SP24 memory:
By pressing ENTER and rotating the “PM2” or “PM3” encoders, it is possible to scroll through all
current available user presets.
If NO USER PRESETS are stored yet, the screen will show the following:
SYSTEM UTILITY
- Software Version -
UTILITY MENU
- Program Utilities -
PROGRAM UTILITY
- Recall a Program -
Recall a Program
No Stored Xovers
8

If presets have previously been stored by the user, anyone of them can be recalled:
By using the “PM2” or “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” button and this will force
the DS-SP24 to begin to load this selected preset and the following transitory screen will appear:
Once loaded the DS-SP24 will exit to the “Recall a Program” screen automatically and the above
screen will disappear:
Note: At any time it is possible to quit the recalling action by pressing the “ESC” button.
– Save a Program: this page allows you to store a new preset in the DS-SP24’s memory:
By pressing the ENTER button and rotating the “PM2” or “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 “Save a Program” screen will show empty memory locations
For all 1-24 presets as shown in the example below for location 10:
[ENTER] to Recall.
01: PRESET 1
Loading New Program . . . . .
01: PRESET 1
PROGRAM UTILITY
- Recall a Program -
PROGRAM UTILITY
- Save a Program -
Save a Program
10: Empty Memory
9

When storing an edited configuration for the DS-SP24, select the location for a preset from the 24
available by using the “PM2” or “PM3” encoders.
Once the desired location appears on the screen press ENTER again to reach the “Set Program
Name” page.
In this page the User can enter a Preset Name (up to 16 Characters) by using the “PM2” or “PM3”
encoder to choose a character and the “NAV/PM1” encoder to move between the 16 available
locations for the character’s positioning.
The current position of the cursor is shown by a “blinking underscore”.
The following is an example of a screen while entering the preset name “Stage 1 2x2” in location
10:
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:
Pressing “ENTER” again, will store the preset in the selected location with the chosen name and
the following transitory screen will appear on the LCD:
Once the preset is stored, the above screen will disappear returning to the following screen:
If during the Preset Storing process you want to overwrite an existing memory location select this
location in the “Save a Program” page, then ENTER and you will be asked if you want to overwrite
this preset with the following “[ENTER] to Overwrite” screen displaying the currently stored preset
and location:
Saving to Memory. . . . .
10: Stage 1 2x2
Set Program Name.
10: Stage 1 2x2 ?
[ENTER] to Save
10: Stage 1 2x2 ?
[Enter] to Overwrite
10: Stage 1 2x2 ?
PROGRAM UTILITY
- Save a Program -
10

If you wish to proceed press “ENTER” again and the DS-SP24 will go ahead with the “Set Program
Name” page and the subsequent overwrite on completion of the previously described storing
process.
Note: At any time it is possible to quit the storing action by pressing the “ESC” button.
– Delete a Program: this page allows you to delete a preset already stored in the DS-SP24
memory:
By pressing the ENTER button and rotating the “PM2” or “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 1-24 presets as shown in the example below for location 10:
If Presets are available they will be shown in the “Delete a Program” page as follows:
By using the “PM2” or “PM3” encoder it is possible to select a preset to be deleted.
Pressing the “ENTER” button on a selected preset will bring up the “[Enter] to Delete.”page
Showing the selected preset.
For example, if we want to delete the preset 10, “Stage 1 2x2”, the screen will be the following:
Confirming the deletion by pressing “ENTER” again, will force the DS-SP24 to erase the selected
preset and the following transitory screen will appear:
Once the preset is deleted, the above screen will disappear returning to the following screen:
PROGRAM UTILITY
- Delete a Program -
Delete a Program
10: Empty Memory
Delete a Program
- 10: Stage 1 2x2 -
[ENTER] to Delete
10: Stage 1 2x2
Erasing Xover Memory. . . . .
10: Stage 1 2x2
PROGRAM UTILITY
Delete a Program
11

Note: At any time it is possible to quit the deleting action by pressing the “ESC” button.
Interface Utilities Sub-menu – this sub-menu allows you to define the remote control interface
[USB or RS485] to be used for controlling the DS-SP24:
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-SP24.
By pressing “ENTER” and then using the “PM2” or “PM3” encoders you can choose between the
two possible interfaces (USB or RS485) for the DS-SP24.
Pressing ENTER on a selected source will make an asterisk appear to the right of the description
on the LCD as in the following example which shows the selected interface as USB.
Security Sub-menu – this sub-menu allows the User to set the parameters shown, lock the
DS-SP24 and set a Password therefore limiting the unit's functions and controls to those who have
only access to the appropriate Password.
Press ENTER and then use the “NAV/PM1” to scroll between options.
– Show Parameter: Pressing ENTER from the above menu will access the “Show Parameter”
Sub Menu.
UTILITY MENU
- Interface Utilities -
INTERFACE UTILITY
- Interface Setup -
Interface Setup
Source: USB *
SECURITY UTILITY
- Show Parameter -
UTILITY MENU
- Security Utilities -
12

Press ENTER again and use the “PM2” or “PM3” encoders to scroll between the “be shown” and
“not be shown” options. An asterisk will highlight which option is selected.
Choosing the “be shown” option means that once the unit is locked, you cannot access parameter
editing features, but they will be displayed on the LCD screen.
Choosing the “not be shown” option means that once the unit is locked, the parameters will not be
shown at all. With this option, when trying to access a parameter, the following screen message
will appear:
– Lock Unit: this sub-menu allows the user to lock the device so no parameters can be edited
or modified.
When the Unit is in an unlocked condition, all parameters will be available for editing. When
you select On, all parameters will be locked and are not available for editing.
When you select lock from the menu, the unit will be locked and the lock menu automatically
exited. The screen will revert to the “Default” showing the current X-Over configuration and
the preset selected and beside the preset’s name a “keylock” icon indicating that the
DS-SP24 is locked.
– User Password: from the “User Password” sub-menu:
Press “ENTER” to access the “User Password” page:
Lock Unit
Lock : On *
Parameter will
not be shown *
SYSTEM UTILITY
- Lock Unit -
SECURITY UTILITY
- User Password -
User Password
[ ]
13

Using the “PM2” or “PM3” encoders 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 “DSSP24” as the password:
The DS-SP24 will exit the “Unit Lock” sub-menu and jump to the “User Password” sub-menu page
screen:
If the password entered in the “Confirm Password” page matches the one entered in the “Enter
Password” page, the following screen will appear.
The Password is now configured and held in the device’s memory.
The user can now decide to “lock” the DS-SP24 by Password, inhibiting the access to ALL
processor functions depending on the setting of the parameter “Password Enable/Disable”,
explained in the following paragraph.
– Enable Password: from the “Enable Password” sub-menu:
Press “ENTER” to gain access to the “Enable Password” screen:
User Password
[DSSP24]
SYSTEM UTILITY
- Insert Password -
Confirm Password
[DSSP24]
SYSTEM UTILITY
- User Password -
Enable Password
Password: Disable *
14

Once a Password has been entered into the DS-SP24 through the steps described in the previous
paragraph, it is possible to “Enable” or “Disable” the password function and therefore lock the
DS-SP24 restricting access to all functions.
When a password has been entered you will be able to select the “Enable” option from the menu
and the unit will not be accessible for editing. In “Locked by Password Status”, all DS-SP24
functions are inhibited to the User, including the use of the Mute A/B and MUTE 1/2/3/4 buttons.
The only access available is to the parameters of the input/output channels (accessible by
pressing the edit button), ONLY to READ the values (no editing possible) if the “be shown” flag
in the “Show Parameter” Sub-Menu has been selected.
Once “Locked by Password” the “keylock” icon will appear on the default LCD screen and no menu
pages will be accessible, with the exception of the “User Password” option.
To regain access to the full operation of the DS-SP24, ENTER to the “User Password” screen and
press the UTILITY Button to access the following screen to enable the correct password to be
entered:
After the correct password has been entered, you will be able to access the full functionality of the
DS-SP24, the “lock Icon” will disappear from the “Default Screen” and automatically the “Enable
Password” page will be back to the “Disable” condition:
If no Password has been set within the DS-SP24, as described in the previous paragraphs, the
DS-SP24 will not allow you to enable any Password, and the choice in the “Enable Password” will
be limited to only the “Disable” option.
● Menu “Input A and B” Input Channels Editing [access by pushing the “A/B” buttons]
From the “Default Screen”, it is possible to access the “Input A and B” menu by pushing the “A” or
“B” button. Once the button is pressed the related blue “EDIT” LED will turn ON. The Sub-Menu
pages can now be scrolled through by rotating clockwise and counter-clockwise the “NAV/PM1”
encoder.
For parameter editing it is necessary to press ENTER and an arrow will appear on the left of the
screen “-> ”. Then use the “PM2” and “PM3” encoders for selecting and setting the parameter
values. On some parameters that have three independent values, you will also need to use the
“NAV/PM1” encoder, eg filter parameter settings.
Note: All parameter editing can be done using the “NAV/PM1”, “PM2”, and “PM3” encoders and the
current shown value of the selected option is AUTOMATICALLY loaded during the encoders’ use
and stored as the current value once leaving the page.
User Password
[ ]
Enable Password
Password: Disable *
15

Gain page – from this screen it is possible to set the Input Channels Level from -12dB to +6dB,
press ENTER an arrow will appear on the left of the screen “->” then use the “PM1” or “PM2”
buttons.
The value set on this screen will only affect the input level of the selected Channel A or B.
The following is an example screen for the “Gain” page that has set the Gain of Input Channel A to
+0.0dB:
Delay page – from this page it is possible to set the Input 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” Delay
Time in steps of 20.8 microseconds.
The following is an example screen for the “Delay” page where the Delay Time of Input Channel A
is set to 160.1872mS:
EQ: [x] sub-menu – from this sub-menu it is possible to set the Input Channels five available
Parametric or Shelving Filters.
The DS-SP24 allows the user to select either Bell or Shelving Parameters and assign them
independently using the 5 available filters.
In order to select the filter's type, it is necessary to have the filter's GAIN=0.0dB, then using the
“PM2” encoder, rotate it “clockwise” in order to decide the Bell filter's Bandwidth, or
“counter-clockwise” to select the Shelving filter type (Low or High) and its order (1st or 2nd).
So, in order to define the filter type for the filter number 1 (“x”=1), it is necessary from the above
Screen, to enter the filter's editing page pressing the ENTER button, and the screen has to appear
as follows:
Input-A Gain
-> Gain = + 0.0dB
Input-A Delay
-> Delay = 160.1872mS
Input-A EQ-X
1.00KHz BW1.05 0.0dB
Input-A EQ-1
-> 1.00KHz BW1.06 0.0dB
16

In this case, the filter's GAIN=0.0dB, and being BW=1.05, the current filter selected is a Bell type
now, rotating the “PM2” encoder clockwise, the parameter BW will range from 0.05 up to 3 for
identifying a bandwidth value for a Bell filter.
If a Bell filter is selected, then the Gain can be modified from 0.0dB and the BW will range between
0.05 and 3.
If the user wants to select a Shelving filter from the above setting, with the GAIN=0.0dB [if the
GAIN is not 0.0dB, it is necessary to set it at 0.0dB using the “PM3” encoder], rotate the “PM2”
Counter-clockwise. Once BW reaches the 0.05 value, at the next step of the “PM2”
counter-clockwise rotation, the selection of the Shelving filters will be entered.
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. 2nd Order High Shelving = -12HiSh [on the screen]
Once the desired Shelving filter is selected, the “PM3” can then be used to select the desired GAIN
and when the GAIN is set at a value different from 0.0dB, then the filter type cannot be changed
until this GAIN is returned to 0.0dB.
BELL Filter: As an example, if we want to set a bell filter within EQ-1, then the BW has to be set at
a desired value of say 1.00 using the “PM2” encoder, the GAIN at say +3dB using the “PM3”
encoder and the center Frequency at say 1.00KHz with the “NAV/PM1” encoder.
The EQ sub-menu screen will show the following:
Once in the Bell 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 Center Frequency, Bandwidth BW
and Gain.
The Center Frequency of the Parametric Filter can be edited using the “NAV/PM1” encoder, the BW
the “PM2” encoder and the Gain the “PM3” encoder:
“Center Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1/24 of an
Octave and can be adjusted by rotating the “NAV/PM1” encoder.
“Bandwidth BW”: the selectable BW range is from 0.05 Octave to 3 Octave in steps of 0.05 Octave
and can be adjusted by rotating the “PM2” encoder.
“Gain”: the selectable Gain range is from -15dB to +15dB in steps of 0.5 dB and can be adjusted by
rotating the “PM3” encoder.
Low Shelving Filter: As an example if we want to set a low shelving filter within EQ-1 then the
“PM2” encoder has to be rotated counter-clockwise until the desired Low Shelving filter say -6LoSh
appears on the screen, the GAIN at say +3.0dB using the “PM3” encoder and the High Cut
Frequency at say 1.00KHz with the “NAV/PM1” encoder.
The EQ sub-menu screen will show the following:
Input-A EQ-1
->1.00kHz BW=1.00 + 3.0dB
Input-A EQ-1
->1.00kHz -6LoSh + 3.0dB
17

Note: Once the desired Low Shelving filter is selected, the “PM3” can then be used to select the
desired GAIN and when the GAIN is set at a value different from 0.0dB, then the filter type cannot
be changed until this GAIN is returned to 0.0dB.
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” encoder, the
Filter's Order can be adjusted by the “PM2” encoder and the Gain the “PM3” encoder:
“Hi Cut Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1/24 of an
Octave and can be adjusted by rotating the “NAV/PM1” encoder.
“Low Shelving Order”: the selectable Low Shelving Filter's range can be selected between the 1st
(Lo-1st.) and the 2nd (Lo-2nd.) one.
“Gain”: the selectable range of the Gain is from -15dB to +15dB in steps of 0.5 dB and can be
Adjusted by rotating the “PM3” encoder.
High Shelving Filter: As an example if we want to set a high shelving filter within EQ-1 then the
“PM2” encoder has to be rotated counter-clockwise until the desired High Shelving filter say -
6HiSh appears on the screen, the GAIN at say +3dB using the “PM3” encoder and the Low Cut
Frequency at say 1.00KHz with the “NAV/PM1” encoder.
The EQ sub-menu screen will show the following:
Note: Once the desired High Shelving filter is selected, the “PM3” can then be used to select the
desired GAIN and when the GAIN is set at a value different from 0.0dB, then the filter type cannot
be changed until this GAIN is returned to 0.0dB.
Once in the High 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 Low Cut Frequency, Filter's Order
and Gain.
The Lo Cut Frequency of the High Shelving Filter can be edited using the “NAV/PM1” encoder, the
Filter's Order can be adjusted by the “PM2” encoder and the Gain the “PM3” encoder:
“Lo Cut Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1/24 of an
Octave and can be adjusted by rotating the “NAV/PM1” encoder.
“High Shelving Order”: the selectable High Shelving Filter's range can be selected between the
1st (Lo-1st.) and the 2nd (Lo-2nd.) one.
“Gain”: the selectable range of the Gain is from -15dB to +15dB in steps of 0.5 dB and can be
adjusted by rotating the “PM3” encoder.
Note1: Once the desired options have been selected using the 3 encoders, they are automatically
saved as current and stored in the DS-SP24 system status once leaving the page.
Note2: To exit this page, push the “ESC” button.
Input-A EQ-1
->1.00kHz -6HiSh + 3.0dB
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● Menu “Output 1/2/3/4” Output Channels Editing [access by pushing the “1/2/3/4” buttons]
From the “Default Screen”, it is possible to access the “Output Channel” menu by pressing the “1”
or “2” or “3” or “4” button. Once pressed, the related blue “EDIT” LED will turn ON.
The Sub-Menus pages can now be scrolled through by rotating clockwise and counter-clockwise
the “NAV/PM1” encoder.
For parameter editing it is necessary to press ENTER and an arrow will appear on the left of the
screen “->”. Then use the “PM2” and “PM3” encoders for selecting and setting the parameter
values. On some parameters that have three independent values, you will also need to use the
“PM1” encoder, for example for the filter’s parameter setting.
Note: All parameter editing can be done using the “NAV/PM1”,“PM2”, and “PM3” encoders and the
current shown value of the selected option is AUTOMATICALLY loaded during the encoders’ use
and stored as the current value once leaving the page.
HPF sub-menu – from this sub-menu it is possible to set the Output Channels High Pass Filter
(HPF).
The following is an example of a HPF sub-menu screen with the filter set at 24dB Linkwitz/Riley on
Output1... using the name “High” (see later for assigning a Name to the outputs):
The filter's parameters can be modified by use the “PM2” and “PM3” encoders for editing the
Filter's Low Cut Frequency and the Filter's Type and Order.
The Low Cut Frequency of the High Pass Filter can be edited using the “PM2” encoder and the
Filter's Type and Order can be edited by using the “PM3” encoder.
“Low Cut Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1/24 of
an Octave and can be adjusted by rotating the “PM2” encoder.
“High Pass Type and Order”: allows you to select the X-Over's High Pass Filter Shape and Order.
The available shapes and orders for the High Pass Filter, that are accessible by rotating the “PM3”
encoder, are listed below:
– No Cut-Off (High 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)
– Butwrth 24dB (Butterworth Filter 24dB/Oct Slope)
– Lnk/Ril 24dB (Linkwitz/Riley Filter 24dB/Oct Slope)
– Bessel 24dB (Bessel Filter 24dB/Oct Slope)
Note1: Once the desired options have been selected using the 2 encoders, they are automatically
saved as current and stored in the DS-SP24 system status once leaving the page.
Note2: To exit this page, push the “ESC” button.
Out-1 High HPE
-> 20.0 Hz Lnk/Ril 24dB
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