LEM DX 26 PLUS User manual

1
Contents
Warnings and Installation . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Before starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
The Basic Principles of Navigation and Editing . . . . . . . . . . . . . 11
Configuration of the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Adjusting the input signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
First Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Display information in default conditions . . . . . . . . . . . . . . . . . . 15
System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Number of PRESETS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Type of PRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Name of the PRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PRESET Modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Menu map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Variations of the Audio Parameter editing pages . . . . . . . . . . . . 20
PRESET menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Load PRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Store & Naming PRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Dump Out PRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Incoming Dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Contents

2
DELAY Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
The practical differences between Input and Output Delay . . . . . . . . 26
Input Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Output Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
EDIT menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Input Noise Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Input EQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Type of filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Centre Frequency / Cutoff Frequency . . . . . . . . . . . . . . . . . . . . . . . 32
Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Xover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Low Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
High Pass Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Type of filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Crossover frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Output EQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Output Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Output Pol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Output Compressor/Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Reaction times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
UTILITY Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Ganging submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Input Ganging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Output Ganging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Units submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Delay Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Lim. Thresh. Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Temperature Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Misc. Setup submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Contents

3
Contents
Input Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Output Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Wake Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
LCD Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Lock submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How to enable protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Protection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How to disable the protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Memory Card submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
How to format the Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Comm. Setup submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
PRESET Change RX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Factory PRESETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 62

4
Warnings and Installation
✔✔
✔✔
✔ Connection to the mains supply
The unit has its own built-in power supply. Before switching on the unit, make certain that the mains voltage
matches that shown on the rear (a tolerance of up to ±10% is acceptable). Before connecting or disconnecting
the power cord, make certain the ON/OFF switch is in the OFF position.
✔✔
✔✔
✔ Switching on and off
CAUTION: before switching on or off, make certain that the sound system’s amplifiers are off or that all unit’s
outputs are automatically forced into MUTE status: this will avoid signal peaks, which are annoying and
sometimes dangerous (particularly for speaker enclosures).
✔✔
✔✔
✔ Connecting and preventing or identifying interference
First of all, check that the apparatus is installed in a place free from industrial or RF (radio frequency) interfer-
ence. Avoid installing your equipment very near radio or TV sets, mobile phones, etc., as these can cause
noisy interference. When connecting the other parts of your sound system, watch out for the so-called “ground
loops”, which could cause hum and jeopardize the products’s excellent Sound-to-Noise and low distortion
characteristics.
The best way (even if not always feasible) to avoid ground loops is to connect the electric ground of all the
equipment to a single central point (“star” system). In this case, the central point can be the mixer.
✔✔
✔✔
✔ Protection and maintenance
Don’t force knobs or switches: these are designed and manufactured to respond to light pressure and could
be damaged if used with excessive force. Take care of your connector cables, a very frequent cause of small/
big problems. Always grip them by the connector, avoid pulling them forcefully and wind them without forming
knots or sharp bends: they’ll last longer this way, and be more reliable, which is a definite advantage.
Avoid exposing the product to strong direct sunlight, high temperatures or intense vibrations, in very dusty or
particularly damp surroundings or, even worse, in the rain: this will help to avoid the risk of faulty operation,
deterioration or even electric shocks and fires. The product is built in shock-resistant material. Nevertheless,
protect it during transport with a flight-case to avoid the risk of any casual accidents. When you’ve finished
using the apparatus, it’s always advisable to protect it from dust, but any dust that does form should be
removed using a cloth or a soft brush. Never use alcohol, acetone or any solvents. The effect does not require
any other maintenance.
✔✔
✔✔
✔ In the event of breakdown
All user-adjustable parts are external and easily accessed. In the event of a breakdown, do not open the
apparatus, but contact the nearest Generalmusic/Lem Service Centre.
✔✔
✔✔
✔ Keeping the documentation
Keep this user’s manual for future consultation. Also remember that the effect will get a better price on the
secondhand market if (as well as being in good condition) it has its original documentation and packaging.
Warnings and Installation

5
Introduction
Congratulations for having chosen the DX 26 PLUS!
DX 26 PLUS is an extremely versatile digital processor for loudspeaker systems
based on the GENERALMUSIC custom DSP RED 208. This powerful 40 bit resolution
DSP, together with low-noise 24 bit converters, provides an extremely high processing
quality and a dynamics suitable for the most professional applications.
DX 26 PLUS has 2 inputs (analog or digital) and 6 independent outputs and
can be configured as 2 or 3-way stereo, 2, 3, 4, 5 and 6-way mono or as distribution mixer with up
to 6 outputs. Configurations that allows the 2 input signals to be summed and routed to different outputs
are also available
Each of the 2 inputs has:
- MASTER DELAY, available also on the input SUM;
- digital NOISE GATE;
- 5-BAND PARAMETRIC EQ;
- level control.
Each of the 6 outputs has:
- DELAY line;
- 5-BAND PARAMETRIC EQ;
- CROSSOVER HP and LP filters which can be selected from the BESSEL, BUTTERWORTH and
LINKWITZ-RILEY types with slopes up to 48dB;
- phase control with 5° steps through a full 360°;
- digital COMPRESSOR/LIMITER;
- level and MUTE control.
All settings can be stored and recalled in an instant. In fact, the system has:
- 21 Factory PRESETS, each of which can be used as a basic configuration for preparing custom
PRESETS, others already optimized for LEM loudspeaker systems.
- 64 User PRESETS, which can be freely programmed to store all the system settings.
- 128 Card PRESETS, in fact User PRESETS that can be stored on Multimedia Memory Cards.
Each User or Card PRESET can contain any of the Input/Output configurations available.
All operations are carried out via user interface that includes a 2x16 LCD, a convenient DIAL for
the parameter modification and selector buttons for the direct access to all the features. DX 26 PLUS is
also equipped with 2 types of serial interface (RS232 and RS485) for the remote control thru a PC and
for the linking of more units.
Introduction

6
Front Panel
MODE
Key for selecting the PRESET, DELAY, EDIT and UTILITY menus.
Selection is made by pressing MODE repeatedly until the required menu is reached, indicated by
the relative LED. Selecting a menu allows access to the editing of its parameters. If none of the
menu LEDs are lit, the display shows the name of the current PRESET (i.e. the PRESET currently
loaded in the memory) and no parameter can be modified.
LEDs MENU
Show the selection status of the PRESET, DELAY, EDIT and UTILITY menu.
DISPLAY
Rear-lit 2x16 display.
Allows to view the pages of the various menus and the relative parameters.
PREV / NEXT
Menu page navigation keys.
Each menu is made up of several pages, which can in turn contain other pages or a variable number
of parameters. The PREV and NEXT keys allow to go to the previous page or the next one
respectively.


 


Navigation cursor keys.
Each editing page contains a variable number of parameters (fields).
The 

and 

keys allow to move the cursor in the page, selecting the various parameters available
as required.
DIAL
Encoder for editing values.
Allows to modify the value of the selected parameter.
Turn the DIAL clockwise to raise the value and counter clockwise to lower it.
Front Panel

7
ENTER
Enter key.
☞Allows access to the editing page whose name is shown on the display.
In some cases (e.g. PRESET name) also allows to:
☞Access the editing of the selected parameter
☞Confirm the value entered
ESC
Escape key.
☞Allows to exit the editing page shown on the display, confirming the value entered.
In some cases (e.g. PRESET name) also allows to:
☞Exit the editing of the selected parameter
☞Reject the value entered and return to the stored value.
CARD
Slot for the MEMORY CARD.
Holds a MULTIMEDIA CARD on which 128 User PRESETS can be stored and recalled whenever
required.
MEMORY CARDS are very useful for safe storage for later use of PRESETS and for their transfer
from one DX 26 PLUS to another one.
INPUT LEVEL A-B
LED ladders indicating the level of inputs A and B.
N.B.: the input gain is adjusted using the INPUT GAIN parameter (EDIT menu).
To ensure a good signal/noise ratio, i.e. an up-front distortion-free signal, keep the signal quite
high, but make certain the red CLIP LED doesn’t light up continually. CLIP.
OUTPUT LEVEL 1-2-3-4-5-6
LED ladders showing the level of the respective outputs.
N.B.: the output level is adjusted using the OUTPUT GAIN parameter (EDIT menu).
IMPORTANT! Enabling the LIMITER on any output also changes the way in which the level is
displayed on the corresponding LED ladder: in this case, in fact, the level shown on the ladder is
no longer the “absolute” output level, but the level of the signal at -24dB, -12dB, -6dB compared
to the LIMITER threshold (orange LIMIT LED), whatever the threshold value is.
MUTE 1-2-3-4-5-6
Keys with LEDs for muting the signal of the respective outputs.
When the LED is lit, the MUTE function is enabled and no signal is fed to the relative output.
N.B.: this function is useful for avoiding signal peaks (bumps) when the sound system is switched on and off, for
isolating the individual audio sections during testing or sound checks, to enable or disable sound reinforcement zones
quickly, etc.
The mode in which the MUTE function is restored when the unit is switched on can be set using
the Wake Up function (UTILITY menu, Misc. Setup submenu) and can be set as Normal (last
setting before the unit was switched off) or Mute (all outputs automatically forced into Mute status).
Front panel

8
Rear Panel
INPUTS A-B
Audio inputs of the respective sections. Combo Connectors (compatible with balanced XLR
and JACK).
The A/D conversion is made with high quality, low noise 20 bit converters.
DIGITAL IN
Digital audio input A-B. Balanced XLR-F connector (one cable is enough to feed both inputs).
The digital inputs can be used in alternative to the analog ones (A & B inputs) to connect the processor
to units fitted with AES/EBU digital outputs (i.e. digital mixers). In this case, two conversions are by-
passed, improving the signal quality. The Digital/Analog Input selection can be set using the Input Select function
(UTILITY menu - Misc. Setup submenu).
A signal connected to the digital input has the same processing as that connected to analog input.
OUTPUTS 1-2-3-4-5-6
Audio outputs. Balanced XLR-M connectors.
The D/A conversion is made with high quality, low noise 20 bit converters.
RS232
RS232 serial communication interface port.
Allows incoming and outgoing communication between a DX 26 PLUS and a PC or other DX 26
PLUS units.
Communication protocol includes:
- Remote control: connecting the DX 26 PLUS to a PC and using the LEM editing software is
possible to remotely control all the processor functions.
- PRESET DUMP: connecting two DX 26 PLUS it’s possible to DUMP the single PRESETS from
one unit to the other (see DUMP procedure).
- PROGRAM CHANGE commands send/receive: connecting two DX 26 PLUS it’s possible, when
a PRESET is recalled on the first one, to send a PROGRAM CHANGE command to the second
one to recall the same PRESET number (see LOAD PRESET procedure).
Rear Panel

9
RS485 IN & OUT
RS485 standard serial communication interface port.
Allows incoming and outgoing communication between a DX 26 PLUS and a PC or other DX 26
PLUS units.
The characteristics of the RS485 interface make these ports particularly suitable for remote control
over long distances (difficult with RS232 standard ports) and for daisy-chaining several DX 26 PLUS.
POWER
Unit’s ON/OFF switch.
Before switching on or off, make certain that the sound system’s amplifiers are off to avoid signal
peaks, which are annoying and sometimes dangerous.
AC ~
Connector for the power supply cable.
Before switching on the unit, make certain that the mains voltage matches that shown on the rear
(a tolerance of up to ±10% is acceptable). Before connecting or disconnecting the power cord,
make certain the ON/OFF switch is in the OFF position.
Rear Panel

10
Signal Processing
Balanced inputs (IN A & IN B).
20-bit A/D converters.
LED ladders for monitoring input signals.
NOISE GATE on the inputs.
5-band parametric equalizers for A & B inputs.
3 delay lines (IN A, IN B & Sum A+B).
Routing System for connecting INPUTS and OUTPUTS.
Delay lines in 1-6 output.
Low-pass filters (LPF) with phase fine control - CROSSOVER.
High-pass filters (HPF) - CROSSOVER.
5-band parametric equalizers for the outputs.
Output level controls.
Polarity inverter.
Output level COMPRESSOR/LIMITERS.
LED ladders showing output levels and limiter action.
Output MUTING controls.
20-bit D/A converters.
XLR-M balanced outputs.
Signal Processing

11
Getting Started
Before starting
Attention!
Before starting work, remember that the DX 26 PLUS is a powerful versatile signal processor mainly
designed for use with audio systems, whose input and output routing configurations can be set only by
recalling one of the PRESETS included in the internal memory. These characteristics mean that correct
careful use must be made of the unit and users must be sufficiently familiar with the unit’s main functions.
So before going ahead, it’s advisable to get to know at least the introductory part of this manual.
The Basic Principles of Navigation and Editing
All the DX 26 PLUS parameters and functions can be accessed and edited using the buttons on the
front panel. All available information is shown on each occasion on the display.
The control software is organized in the PRESET, DELAY, EDIT and UTILITY menus, each of which
contains the relative types of parameters and functions. The navigation, i.e. access to the system’s menus,
and changes of the various parameters follow logical criteria, which can be summed up as follows:
☞The menu is selected using the MODE key.
☞The menu selected is indicated by the relative menu LED and showed on the display.
☞In default conditions (i.e. when none of the menu LEDs are lit), the display shows the principle infor-
mation on the PRESET currently loaded in the memory.
☞Each menu is made up of several pages, which can be reached using the PREV and NEXT keys.
☞Each page is accessed by means of the ENTER key and left using the ESC key or MODE key.
☞A page can contain other pages. In this case, the name of the page is preceded by an arrow ➔
☞Each page contains one or more parameters (fields), which can be selected using the WW
WW
Wand XX
XX
X
keys.
The selected parameter can be identified by its flashing characters.
☞Changes are made to the selected parameter by means of the DIAL knob.
Changes have immediate effect and, apart from a few exceptions (for example when assigning a
name to a PRESET), don’t need to be confirmed to be entered.
Getting Started

12
Configuration of the System
☞Refer to the Configurations chapter to find the DX 26 PLUS configuration which corresponds with
your sound system (2 x 3 ways; 2 x 2 ways + 2 Aux Mono; etc.)
☞Refer to the Connections chapter and, with the equipment switched off, carry out the audio and power
connections among the various components of your sound system.
☞Connect the mains cable and switch on only the DX 26 PLUS. The display shows data regarding the
operating system release for a few seconds.
LEM DX26PLUS
- Release 1.0 -
At the same time, the system restores the exact operating conditions at the time of switching off.
N.B.: in actual fact, a “photograph” of the last scene used is uploaded. This includes the last PRESET loaded, all the
temporary changes (if any) made to it and the settings of the various options of the system.
The system then enters default status, showing the main operating information on the display.
A
13 B24 S56
2U2x2
W
+2M
A
X
☞Set all the DX 26 PLUS outputs in MUTE status (LEDs lit) by pressing the relative keys.
☞Load the Factory PRESET containing the configuration you’ve found:
Press the MODE Key until the PRESET menu LED lights up.
The display shows the Load PRESET page:
Load Preset
3F2x3
W
(example)
Use the DIAL to find the necessary Factory PRESET (indicated by the letter F). Check that if, among
the PRESETS available, there are already some optimised for the specific speaker enclosures being
used.
Press ENTER.
The display shows the PRESET loaded in the unit’s memory and the relative configuration:
A
135 B246
3F2x3
W
(example)
Getting Started

13
Adjusting the input signal
Setting the input signal of a digital unit is particularly important, much more than with an analog unit, as
any saturation of the A/D converters caused by excessively high input signals cause a typical particu-
larly distinct noise (high level square wave).
Proceed as follows:
+ Keep the DX 26 PLUS outputs in MUTE status (LEDs lit).
+ Feed a signal in on the DX 26’s input and watch the INPUT LEVEL A-B LED ladders.
To obtain a good signal/noise ratio, i.e. an up-front distortion-free signal, keep the signal quite high, but
make certain the red CLIP LED doesn’t light up continually.
+ First of all, find the output level setting for your mixer (or other unit) connected to the input of the DX 26
PLUS
+ Then adjust the DX 26 PLUS input gain if necessary:
Press the MODE key until the EDIT menu LED lights up.
Use the PREV and NEXT keys to go to the Input Gain page:
´In
p
ut Gain
Press ENTER. The display shows the INA Gain or INA&B Gain page (according to the configuration
and other utilities loaded in the memory):
IN
A
G
A
IN
0.0dB
IN
A
&
BG
A
IN
0.0dB
Use the DIAL to change the gain value and watch the level of the signal on the LED ladders until the
ideal values are reached.
IN
A
G
A
IN
-2.5dB
IN
A
&
BG
A
IN
+6.0dB
Then use the PREV and NEXT keys to access the INB Gain page (if there is one – this depends on the
configuration and the other utilities loaded in the memory).
Repeat the settings as explained above.
Getting Started

14
First Setup
At this point, the first custom setup can be prepared.
The following is only a description of setup procedure.
The detailed specifications of each parameter are shown in the respective paragraphs of the manual.
☞Firstly, set the following parameters in the order shown:
Output Pol. Polarity of the outputs
Xover Crossover frequencies (separation of the speaker channels)
Output Delay Alignment of the speaker enclosure components
Output Gain Levels of the outputs
N.B.: the regulation of the DX 26’s parameters is closely linked to the characteristics of the sound system’s components.
So if you’re not experts, refer to the documentation and technical specifications of your power amplifiers, loudspeaker
enclosures, monitors, etc. This will enable you to work faster and safely.
☞Disable the MUTE function on the outputs you intend using and listen the sound, carry out instrumental
checks (if you have the necessary equipment) and any corrections required.
☞Then, if necessary, adjust the values of the following functions:
Output EQ Output equalizers
Output Comp/Limit Output compressor/limiters
N.B.: in this first phase of setting up your sound system, the adjustment of these functions (which are very useful, if
not indispensable during installation) can wait. Remember however that adjusting the equalizers also affects the signal
level. So if considerable equalization changes are made, remember to check and if necessary adjust the output levels
too.
Getting Started

15
Display information in default conditions
In default conditions, i.e. when none of the menu LED’s is lit, so no type of editing is enabled, the
display shows the main information on the PRESET currently stored in the memory:
A
13 B24 S56
2U2x2
W
+2M
A
X
There are various information areas:
System configuration
A
13 B24 S56
2U2x2
W
+2M
A
XSystem configuration
The bold letters indicate the inputs:
A= Input A
B= Input B
S= SUM (sum of inputs A and B)
Numbers 1, 2, 3, 4, 5and 6indicate the respective outputs.
In the example:
The signal connected to Input Ais assigned to outputs 1and 3.
The signal connected to Input Bis assigned to outputs 2and 4.
The Sum of the signal on inputs Aand Bis assigned to outputs 5and 6.
The system is therefore configured as shown in the following diagram.
Getting Started

16
Number of PRESETS
A
13 B24 S56
2U2x2
W
+2M
A
XNumber of PRESET
21 Factory PRESETS, 128 User PRESETS and 128 Card PRESETS are available.
Type of PRESET
A
13 B24 S56
2U2x2
W
+2M
A
XType of PRESET
There are 3 categories of PRESETS:
F= Factory PRESETS factory programmed, cannot be permanently changed.
These include all the system’s usable configurations + some specific setups
for LEM enclosures.
These are the starting points for creating User PRESETS and Card PRESETS
from scratch.
U= User PRESETS can be programmed by users.
C= Card PRESETS can be programmed by users and stored on a Multimedia Memory Card.
Name of the PRESET
A
13 B24 S56
2U2x2
W
+2M
A
XName of the PRESET
In the example, the name indicates a two-way stereo system + two auxiliary mono outputs.
N.B.: the name of a Factory PRESET normally indicates the general structure of the sound system to be connected
to the DX 26 PLUS or of a specific speaker enclosure model.
The name of a User PRESET and a Card PRESET can be edited as required. For example:
A
13 B24 S56
2UM
y
LiveSetu
p
Getting Started

17
PRESET Modifications
M
A
13 B24 S56
2U2x2
W
+2M
A
XPRESET Modifications
This indication shows that the value of one or more parameters has been temporarily modified with
respect to the values stored in the PRESET shown.
Practically speaking, this indication means that the changes made to the PRESET have not been
stored.
N.B.: once it has been enabled, the indication remains even if the “original” values are reset manually.
The indication disappears as soon as the PRESET is saved or as soon as a new PRESET is loaded
(including this same PRESET).
In other words, the indication disappears as soon as stored values are accessed.
If the PRESET isn’t saved, temporary changes are lost as soon as a new PRESET is loaded (including
this same PRESET).
N.B.: temporary changes are kept on the other hand in the “buffer memory”: when the unit is switched on, the system
maintains exactly the same settings as when the unit was switched off, including temporary changes.
System Protection
T
A
13 B24 S56
2U2x2
W
+2M
A
X
P
A
13 B24 S56
2U2x2
W
+2M
A
X
These indications appear when the LOCK function (UTILITY menu) is enabled, i.e. when the system is
totally (T) or partially (P) protected against accidental or unauthorized changes (even if temporary).
Protection is ensured by a password, without which editing procedure can’t be unlocked.
Getting Started

18
Menu map
Menu map
The control software is organized in PRESET, DELAY, EDIT and UTILITY menus, each of which contains
the relative types of parameters and functions.
To facilitate menu navigation, refer to the following map:
menu
PRESET Load Preset
Store Preset
Dump Out Pre set
Incoming Dump
menu
DELAY Input Delay
Output Delay
parameters
parameters
menu
EDIT Input Gain
Input EQ
Noise Gate
Xover
Output EQ
Output Gain
Output Pol.
parameters
parameters
parameters
parameters
parameters
parameters
parameters
Output Cmp/Limit parameters
Input GATE parameters
parameters In these pages, the number of the parameters and how they are presented varies according
to the configuration of the PRESET and according to Ganging and Units settings (UTILITY menu). In fact, these pages
only show the parameters that can actually be used, in the most suitable form of editing.
Menu map

19
menu
UTILITY
Comm. Setup Preset Change RX
Ganging Input Ganging
Output Ganging
Delay UnitUnits
Lim. Thresh. Unit
Temperature Unit
Input SelectMisc. Setup
Output Meters
Temperature
Wake Up
LCD Contrast
Lock Lock
Memory Card Format Card
Menu map

20
Variations of the Audio Parameter editing pages
parameters
DX 26 PLUS can be configured with a large number of IN/OUT combinations.
In some configurations certain parameters aren’t used.
To streamline editing, the system only presents the parameters that can be used on each
occasion.
For example, in the case of a 6-way configuration, input B and SUM aren’t used. The system
therefore only presents the parameters relative to Input A.
Some functions also affect the way in which parameters are edited or represented.
The Ganging function (UTILITY menu) allows to “group together” the treatment of compatible inputs
and/or outputs.
For example, it allows to equalize simultaneously and with identical values the two outputs which
feed the mid sections of a stereo sound system.
The Units option (UTILITY menu) allows to edit the values of several functions using the
measurement units preferred.
For example, it allows to edit the Delay in meters, millimeters, milliseconds or microseconds.
In these cases too, the system automatically presents the parameters in the most suitable type
of editing.
For example, in the Input Delay function
´In
p
ut Dela
y
according to the configuration of the PRESET and according to Ganging and Units settings, the
system can have variations of this type:
IN
A
DEL
A
Y
77ms Editing of individual inputs
IN
A
&
B DEL
A
Y
77ms Editing of ganged inputs
IN
A
DEL
A
Y
26.5m Measurement units preferred
Menu map