Montarbo LM 260 User manual

OWNER’S MANUAL
LM 260
LOUDSPEAKER MANAGEMENT PROCESSOR

Owner’s manual | LM 260 Loudspeaker Management Processor
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LM 260
LOUDSPEAKER MANAGEMENT PROCESSOR
WARNING
In order to protect your own and others’ safety
and to avoid invalidation of the warranty of
this product, please read this section carefully
before operating this product.
•Read all documentation before operating your equipment.
•Retain all documentation for further reference.
•Mains voltage must correspond to rear unit label.
•Damages caused by connecting to improper AC voltage are
not covered by any warranty.
•Always operate the unit with the AC ground wire connected
to the electrical system ground. Precautions should be taken
to avoid equipment faulty, improper or inefficient grounding.
•After connection to power supply Standby LED is lit, showing
that some components inside are already powered.
•Make sure the signal is correctly connected to amplifier input
channel following current input mode.
•Please turn off the power switch when extracting the power
cord and signal cable, or adjusting the input mode switch.
•In order to split one signal to more than one amplifier, we
suggest to use a signal distributor.
•In typical use, please set the volume to -0dB position.
•If you need to supply power to more than one unit power
amplifiers, to eliminate the big surge current interference
to electricity net, and preventing the voltage fluctuate
abnormal when simultaneously switching on the amplifiers,
we recommend you use the sequence power procedure.
•Do not obstruct the air entrance and exit ports.
To reduce the risk of electric shock, do not
removecover (orback).Nouser serviceable parts
inside. Refer servicing to qualified personnel.
CAUTION
This product does not contain user serviceable parts. In order
to prevent fire and/or electrical shock, never disassemble it.
For maintenance and servicing always refer to the official
FiveO by Montarbo®Distributor in your Country or to qualified
personnel specifically authorised by the Distributor.
WEEE | Waste from Electrical and Electronic Equipment
ATTENTION!
The crossed out wheeled bin symbol that can be found
on this product means that the product is covered by the
Waste from Electrical and Electronic Equipment Directive.
The symbol is intended to indicate that waste from
electrical and electronic equipment must be subject to a selective
collection. For more details on available collection facilities please
contact your local government office or the retailer where you pur-
chased this product. The solid bar underneath indicates that the
product has been put on the market after 13th August 2005.
INFORMATION ON PROPER DISPOSAL
Information on Disposal for Users (private households)
In the European Union | Attention: If you want to dispose of
this equipment, please do not use the ordinary dust bin! Used
electrical and electronic equipment should not be disposed of via
the normal household waste stream but must be treated separa-
tely and in accordance with legislation that requires proper tre-
atment, recovery and recycling of used electrical and electronic
equipment. Following the implementation by member states, pri-
vate households within the EU states may return their used elec-
trical and electronic equipment to designated collection facilities
free of charge*. In some countries* your local retailer may also
take back your old product free of charge if you purchase a similar
new one. *Please contact your local authority for further details.
In other Countries outside the EU | If you wish to dispose of
this product, please contact your local authorities and ask for the
correct method of disposal.
In Switzerland | Used electrical or electronic equipment can be
returned free of charge to the dealer, even if you don’t purchase
a new product. Further collection facilities are listed on the home-
page of www.swico.ch or www.sens.ch.
Information on Disposal for Professional Users
In the European Union | If the product is used for business pur-
poses and you want to discard it: please contact your FiveO by
Montarbo®dealer who will inform you about the take-back of the
product. You might be charged for the costs arising from take-
back and recycling. Small products (and small amounts) might be
taken back by your local collection facilities.
In Spain | Please contact the established collection system or your
local authority for takeback of your used products.
In other Countries outside the EU | Please contact your local
authorities and ask for the correct method of disposal.
The lighting flash with arrowhead symbol within an equilateral
triangle, is intended to alert the user to the presence of uninsulated
’dangerous voltage’ within the product’s enclosure, that may be of
sufficient magnitude to constitute a risk of electric shock to humans.
The exclamation point within an equilateral triangle, is intended
to alert the user to the presence of important operating and
maintenance (servicing) instructions.
IMPORTANT PRECAUTIONS

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CONTENTS
Important precautions
Contents
Introduction
Features
Installation
Operations
Tips
DESCRIPTION
1. Front panel
2. Real panel
3. Fast system configuration
4. Menu details
4.1 Menu details
4.2 Menu details
4.3 Menu details
4.4 Routing
4.5 Versions
4.6 Language
5. Preset editing
6. Software
6.1 Installation
6.2 Operation
6.3 Main page
6.4 X-over
6.5 Out pages
6.6 Example
6.6.1 LOW
6.6.2 MID
6.6.3 HIGH
7. Troubleshooting
8. Technical specifications
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PACKAGE CONTENTS
∙ Loudspeaker management processor
∙ AC power cable
∙ All Control Software CD
∙ Owner’s manual
∙ Warranty certificate

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INTRODUCTION
First of all, thank you for choosing a product FiveO by Montarbo®. This line of products has been designed for those who
want to set-up their user friendly audio sound system with excellent performances and outstanding value. Furthermore, we
manufacture all FIVEO products to assure you many years of satisfying and reliable operation.
Your LM 260 Loudspeaker Management processor, which perfectly suits the needs of stage, bands, rehearsal rooms and
even recording studios applications. Please, in order to enjoy each feature of your new processor thus achieving the best sonic
results, take a few moments to carefully read these instructions.
For further information about your microphone, please check our website www.fiveo.it, or send an email to: mail@fiveo.it
FEATURES
Your LM 260 Loudspeaker Management processor has been designed to successfully work in most demanding live and
studio applications. LM260 provides your several processing devices for your sound system. The first unit is a digital crossover,
allowing you to choose dividing frequencies for each way of your sound system, with slopes up to 24dB/Oct. by Bessel,
Butterworth and Linkwitz-Riley filters. The delay line allows you to align the emission point of each driver. The powerful 10-
band parametric equalizer allows you to make frequency response fine adjustments to perfectly tune each output of your
sound system in any venue. Furthermore we provided you also a useful phase switch and a limiter section to avoid amplifiers
overload.
Versatility, reliability and toughness will make LM 260 your faithful sound-mate for years...
∙ USB Firmware and Software
∙ Option for Linked Stereo DSP Processing
∙ 2-Channel XLR Input and 6-Channel XLR Output
∙ 2x1, 2x2, 2x3, 1x4, 1x5, 1x6 Crossover Configurations
∙ Independent 10-band Parametric EQ for each output
∙ Independent Output Limiter for each output
∙ Independent Output Alignment Delay for each output
∙ Power on/off Mute Circuitry
∙ 1 Factory Preset / 49 User Programmable Presets
∙ 2x16 LCD Display
∙ Front Panel Input and Output Meters
∙ Front-Panel Output Mutes
S OF T WA R E U SE
A USB I/O Type B (square) port is provided for upload/download presets to computer. Please, check the software pages to have
an easier and faster control over your LM 260.
INSTALLATION
Be sure that there is enough space around the unit to comfortably work and even for cooling purposes, to avoid over-heating.
Don’t place your processor on high-temperature devices such as power amps or radiators. LM 260 is connected to the
mains via the supplied cable. First connect the cable plug to the mains, then turn on the processor.
Please note that all units must be properly grounded.
For your own safety, you should never remove any ground connector/device from electrical devices or power cables, or make
them inactive. Please ensure that only qualified people install and operate the mixing console.
OPERATIONS
With your amplifiers turned off, start making connections. Using XLR cables connect balanced line level sources to LM 260 inputs, and
LM 260 outputs to amplifiers inputs. Turning on your LM 260, the last used preset is loaded but for a short time all LM 260 outputs
are set to MUTE. It’s a safety feature to avoid problems to connected sound systems, particularly when the levels are set to the maximum.

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TIPS
We strongly suggest you to avoid exposition to loud music for prolonged periods, you risk to seriously damage your hearing.
It’s a good idea to check all the cables in your warehouse before departing, as well as carrying with you spare cables for any
emergency.
In order to prevent switch-on thumps, and subsequent drivers damages, please keep in mind the first audio lesson: amplifiers
must be turned on last, amplifiers must be turned off first! In order to keep the front panel clean, please scrub it with a soft
fabric just moistened with water. Don’t use solvents, which may corrode the front panel printing and paint.
Before activating your sound system, please carefully check mains grounding. Otherwise you could have hum or other
unpleasant noise. We suggest you to regularly inspect audio INPUTS level indicators. In this way, you can immediately detect
any abnormal level setting, making a fast reduction of input levels you can avoid inputs overloads.
Be careful using LM 260 extremely boosted EQs and LEVELs; such operation could overload the amplifiers inputs! So, we
suggest you to use the EQ to emphasize sound nuances and details, even cutting EQ on other bands! If the output CLIP LED
of any band is continuously lit, please check all the settings (LEVEL, Eqs, etc.) for that band; keeping in mind your settings,
you can operate in a fast way to reduce output levels thus avoiding amplifiers input overload.

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DESCRIPTION
1. FRONT PANEL
A/B INPUTS Meters – LM260 provides the user with two independent, seven-segment input meters ranging from SIG
to CLIP. These meters monitor the input signal level, as adjusted from the source.
Display – This 16 character 2 lines backlit display will show you all the information about LM260 parameters and their values.
DIAL – This DIAL (encoder) can be used in two ways. Rotating it you can edit parameter values, to set the desired value.
Pushing it you can select most features.
PAGE keys – Navigate through the pages by depressing PAGE or PAGE successively until arriving at the desired page.
PREV/NEXT keys – Navigate through the parameters by depressing NEXT or PREV successively until arriving at the desired
parameter.
OUTPUT LEVELS – LM260 provides the user with two independent, seven-segment output meters ranging from SIG to
CLIP. These meters monitor the input signal level, as adjusted from the source.
OUTPUT MUTE keys – Each output channel of the LM260 contains a MUTE key. These keys are automatically activated
for safety during parameters editing, and can be manually used to do safe operations.
2. REAR PANEL
Outputs 1-6 – The output section of your LM260 offers six balanced XLR connectors.
USB port – Your LM260 can be interfaced to your computer by this USB Type B (square).
Inputs 1-2 – The input section of your LM260 offers two balanced XLR connectors.
115V/230V selector – This selector can be used match the unit to local voltage supply. In order to avoid accidental
operation, this selector is protected by a small cover, secured by a screw.
IEC Power Cord Receptacle – This cord receptacle contains also a fuse-holder. Use only the right type (and value)
replacement fuse! An IEC power cord is supplied in unit package.
Power Switch – The Power Switch turns the LM260 on and off. Please don’t forget a basic rule: power amplifiers should
be powered down prior to turn on your LM260.
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3. FAST SYSTEM CONFIGURATION
First of all switch off the equipment, carry out the audio and power connection from the various components of your sound
system. After connecting all audio cables, connect the mains cord and only at the end switch on the LM260.
The display will show
Initializing...
while all outputs are muted for some seconds. Meanwhile, the system will restore the exact operating conditions at the time
of switching off.
Then the system will enter into default status, showing last loaded Preset name:
FIVEO LM260
DEFAULT PRESET
Set all the LM260 outputs in MUTE status (LEDs lit) by pressing the relative keys.
Load the Factory PRESET containing the configuration.
Preset Menu
Pressing MENU once the display will show you the last loaded preset, for example:
Load: 1
DEFAULT PRESET
Following examples are based on DEFAULT PRESET; for further details, please read following paragraphs. Pressing again
MENU you recall the following screens:
Save: 1
DEFAULT PRESET
Access Level:
** Unlocked **
Routing: Stereo 3-way
Version Info HW: 2.35.4
Language: English
Adjusting the input signal
It is much more important to set the input signal of a digital unit than that of an analogue unit, since excessively high input
signals will make any saturation of the A/D converters cause a particularly distinct noise (high typical level square wave).
Proceed as follows: Keep the LM260 outputs in MUTE status (keys lit). Feed a signal in LM260 INPUTS and check 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 flash continuously.
Find out your mixer (or other sound source) output operating level and check LM260 input LEDs.
To adjust the input gain, please check “In 1 Gain” and “In 2 Gain” settings. If necessary reduce it counter-clockwise rotating
the DIAL, please note that minimum step is 0.25dB Using the DIAL to change the gain value, check the level of the signal
on the INPUT LED ladders until the ideal values are reached.
Then use the NEXT key to access to “In 2 Gain” page (it will depend on the configuration; linking input Gains, you just need
to set one Gain value). If necessary, repeat the settings as explained above.
At this point, the first custom setup can be prepared. The detailed specifications of each parameter are shown in the respective
paragraphs of the manual.

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4. MENU DETAILS
4.1 PRESET LOAD
Pressing the DIAL the display will show the Number and the name of the preset, for example:
Load: 1
DEFAULT PRESET
Pressing the DIAL, the display will show:
Load Preset ?
NO/YES
You can chose YES by pressing PREV/NEXT or by rotating the DIAL.
4.2 PRESET SAVE and naming
Pressing MENU, the display will show:
Save: 1
DEFAULT PRESET
Pressing the DIAL again the display will show:
Set Presetname:
Using the DIAL you can set DESIRED preset name. Please note that you can move the DIAL clockwise only, so to adjust a wrong entry,
you’ve to press more times the DIAL, thus returning to the wrong entry.
Available naming entry characters are:
! “ # $ % & ‘ ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B C D E F G H I J K LM N
O P Q R S T U V W X Y Z [ ] ^ _ ` a b c d e f g h i j k l m n o p q r s t u v w x y z { | }
4.3 ACCESS
You can chose Access Level between *** Locked *** and ** Unlocked ** options.
Choosing Locked, please store your password in a very safe way!
The default is ** Unlocked **.
The Default password is AllDSP.
Of course you can modify it, with a different 8-characters password to be confirmed in ACCESS screen two.
4.4 ROUTING
By rotating the DIAL, you can chose between following Operating Modes:
OPERATING MODE OUTOUT 1 OUTOUT 2 OUTOUT 3 OUTOUT 4 OUTOUT 5 OUTOUT 6
Mono 4-way Channel A Channel A Channel A Channel A Channel A
Channel B Channel A Channel B
Mono 5-way Channel A Channel A Channel A Channel A Channel A Channel A
Channel B
Mono 6-way Channel A Channel A Channel A Channel A Channel A Channel A
Stereo 1-way Channel A Channel B Channel A
Channel B Channel A Channel B Channel A Channel B Channel A Channel B
Stereo 2-way Channel A Channel B Channel A Channel B Channel A
Channel B Channel A Channel B
Stereo 3-way Channel A Channel B Channel A Channel B Channel A Channel B

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4.5 VERSION
Version Info has three screens:
HardWare
SoftWare
Serial Numbers.
By pressing DIAL, you can toggle among version screens, as follows:
Version Info HW: 2.35.4
Version Info SW: 1.9.9
Version Info SN: 0000010131
4.6 LANGUAGE
By rotating the DIAL you can chose between following screens:
Language: English
Idioma: Español
Langue: Français
Sprache: Deutsch
Taal: Nederlands
By pressing the DIAL, you can chose the desired language.

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5. PRESET EDITING
After loading the needed preset, you can edit the values pressing NEXT.
First value to be adjusted is INPUT GAIN.
The display will show:
In 1 Gain
3.00dB
The value range is from -50.00dB up to +12.00dB, in 0.25dB steps
Pressing NEXT again the display will show:
In 1 Link: Off
Values are On and Off. Pressing PAGE you can recall In 2, which has the same two NEXT/PREV screens.
Pressing PAGE again you can recall all the outputs.
For details about outputs signal, please check 4.4 ROUTING (page 8).
Pressing NEXT you recall the OUTPUT GAIN screens and the display will show, for example:
Out 1 Gain
0dB
The value range is from -50.00dB up to +12.00dB, in 0.25dB steps
Out 1 Link: Off
Values are On and Off. Pressing NEXT you recall the LINK screen The display will, for example, show:
Out 1 Link: Off
Values are Off or On. Pressing NEXT you recall the PHASE screen. The display will, for example, show:
Out 1 Phase: Normal
Values are Normal or Inverted. Pressing NEXT you recall the LIMITER screen, the first display will show THRESHOLD setting,
for example:
Out 1 Limiter: Thr.: 0dBu
Range is from -30.00dBu up to +9.00dBu, in 0.25dBu steps.
Pressing NEXT you recall the PEQ screens, one for each 10 Output parametric equalizers.
The display will, for example, show:
Out 1 PEQ 10 Freq: 10240Hz
Each parametric EQ band can be set in 20Hz-20000Hz range, with 1Hz step.
Pressing again the DIAL, you can chose each parametric equalizer gain:
Out 1 PEQ 10 Gain: 0dB
Range is from -12.00dB up to +12.00dB, in 0.25dB steps.

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Pressing again the DIAL, you can chose each parametric equalizer Q factor:
Out 1 PEQ 10 Q: 1.00
Values are adjustable in 0.20-25.00 range, with 0.10 Q steps.
Pressing again the DIAL, you can chose each parametric equalizer type:
Out 1 PEQ 10 Type: Bell
You can chose EQ type among: Bell; Notch; High Shelf; Low Shelf and Allpass.
Finally, pressing NEXT you can enable/disable each PEQ band, the screen will show:
Out 1 PEQ 10 Enabled: On
Values are Off or On.
Pressing NEXT you recall the HighPass crossover screen, the display will show, for example:
Out 1 HighPass Freq: Off
The HighPass to Off or tuned 20Hz-20000Hz range, with 1Hz step.
Pressing the DIAL you can chose HighPass filter type among the following options:
LR 24dB
BES 24dB
BUT 24dB
BES 18dB
BUT 18dB
LR 12dB
BES 12dB
BUT 12dB
BES 6dB
BUT 6dB
Please note: LR = Linkwitz-Riley BES = Bessel BUT = Butterworth.
Pressing NEXT you recall the LowPass crossover screen, the display will show, for example:
Out 1 LowPass Freq: Off
The HighPass to Off or tuned 20000Hz-20Hz range, with 1Hz step.
Pressing the DIAL you can chose LowPass filter type among the following options:
LR 24dB
BES 24dB
BUT 24dB
BES 18dB
BUT 18dB
LR 12dB
BES 12dB
BUT 12dB
BES 6dB
BUT 6dB
Please note: LR = Linkwitz-Riley BES = Bessel BUT = Butterworth.

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Pressing NEXT you recall the DELAY screen, the display will show, for example:
Out 1 Delay 0ms
You can adjust Delay value from 0.000ms up to 4.995ms, in 15ms steps.
You can chose values in mm. (range from 0mm to 1.71m) or in feet (range from 0ft to 5.62ft).
In mono routing only, pressing NEXT you recall the MIXER screen showing, for example:
Out 1 Mixer: Input 1 0dB
pressing DIAL again, the display could show:
Out 1 Mixer: Input 2 0dB
The minimum value is Off, than the range is from -47.75 up to 0dB, in 0.25dB steps.

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6. SOFTWARE
6.1 INSTALLATION
System requirements:
1. CPU: Pentium 3 or up
2. Internal memory: 512Mb or more
3. Hard disc: 500Mb or more
4. Operating system: Windows XP or up
Installation and uninstallation
1. Install
Insert the manager system installation CD, select LMS installation procedure: All control setup.exe. Mouse double-clicks to
begin the installation: Install according to the system tips by step.
2. Uninstall
Opens START menu and select ‘Allcontrol’ menu and then choose ‘Uninstall Allcontrol’ uninstall and confirm, then the
software will be uninstalled automatically.
Equipment Upgrade:
When software has upgrades, you can update the internal process of equipment by software. Connect equipment to your
computer through USB cable, then, operate Firmware Upload and click Start to upgrade software.
6.2 OPERATIONS
After connecting the USB port to your computer and your LM260, you can launch the Five0 DSP Software.
Turning on your LM260, you’ll see the progress in “Finding Hardware” box.
The basic DEFAULT PRESET screen will show you several Menus.
On the left we’ve a column with several boxes.
MAIN recalls the main screen
X-OVER recalls Crossover page
OUT1 to OUT 6- recall all the Outputs settings
6.3 MAIN PAGE

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The central column shows following sections:
PRESETS LOCAL with Store and Load boxes.
These boxes are related to your computer memory, allowing you to store to and to load from the folder:
Programs > AllControl > presets.
PRESETS UNIT
The top box shows the name of currently active preset. The middle box shows the list of 50 available preset + “0” preset called
Last Setting, i. e. the parameters of the preset as currently edited.
Finally we have the Store and Load boxes.
Pressing Load the computer synchronizes with your unit, this operation is shown in a box with a green progress line.
Pressing Store the changes done (and momentarily kept in “0” preset called Last Setting) are stored in unit internal memory.
LINK
Feature one lit box and one box for unit choice.
If the unit is turned off you will be warned by a text box showing “No units found. The software will start in demo mode.”
In this case the light will be red, and the software will work in “LM260 (Demo)” mode. Turning on your unit, you can chose
the way of working between “LM260 (Demo)” mode and “FIVEO LM260 (USB port#)”
UNIT NAME
Shows the name of currently active unit.
ALLCONTROL DSP COMMAND CENTRE
Shows input and output sliders, with active text boxes. These text boxes show the level settings, and can be used to do fine
adjustments. Under the active text boxes there are LINK locks to link odd (which has priority) and even pairs, and MUTE switches.
6.4 X-OVER
The main screen shows frequency response from 10Hz up to 20kHz, and dynamic range from +10dB up to -50dB. On the right
there are 6 OUTPUT LEVEL indicators, and MUTE and PHASE INVERT switches.

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On the bottom we’ve 6 sections for crossover settings.
First of all there are 3 LINK locks to link odd (which has priority) and even outputs.
HPF - allows you to chose the frequency and the type of each band High-pass filter
LPF - allows you to chose the frequency and the type of each band Low-pass filter
G can be used to make Gain small adjustments
D is useful to set each driver Delay time
In the example shown in preview pic (page 14), we set a Stereo 3-way crossover type, with linked output pairs.
Subwoofers are cut with a 150Hz 24dB Butterworth slope, with 4.00 ms Delay line, to alignate the emission of the sub with
the emission of the satellites.
Satellites woofers have a 120Hz 24dB Bessel slope, thus achieving a small overlap with subs, and HPF @ 3500Hz, 24dB Butterworth
slope.
Hi-frequency drivers have a 3500Hz 24dB Butterworth slope, and no HPF cut.
6.5 OUT PAGES
OUT PAGES
The main screen shows frequency response from 10Hz up to 20kHz, and 10-band PEQ operations from +15dB up to -15dB. On
the left there is the MIXER section, with two sliders: In 1 and In 2.
The PEQ section has one ON box (when it’s lit, that band is active), followed by a TYPE box (Allpass; Bell; High Shelf; Low Shelf
and Notch) and active boxes for FREQ, Q and GAIN. On the bottom you have crossover HPF and LPF sections with preset boxes
for crossover type and active boxes for frequency setting.
The activity of these controls is shown in main screen as a graph, with overall settings shown by a white line.
On the right you have a very large output GAIN slider ranging from +12.00dB up to -48.00dB; on the bottom there’s a active
box indicator. Then you have the MUTE and INVERT indicators, lit when the switches are activated.
The DELAY knob adjusts the delay line from 0.00ms up to 5.00ms, with 0.01ms steps.
On the bottom right corner you have the LIMITER section with THR (Threshold) from -30dB up to +9.00dB, with 0.25dB steps.
Finally there’s the REL (Release) control, which is adjustable from 1.00 up to 100.00.

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6.6 EXAMPLE - (2x3 - 3-way stereo)
6.6.1 LOW
In above example we did two Eq settings on OUT 1 & 2, which are linked. We cut by 12.00dB lower disturbing frequencies by
a Low Shelf filter tuned @ 25Hz, with 25.00Q. In this way we obtained a very effective cut of lower frequencies, this cut just
affects lower piano notes! We boosted by 2.25dB 153Hz with 1.00Q, to achieve more presence of lower frequencies.
This screen display also the 150Hz Butterworth 24dB LPF and 4.00ms delay, and Limiter section THR @ 0.00 (it’s “off “) and
REL @ 50.00
The overall result of above settings is shown by white line.
6.6.1 MID

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In the example on preview page we did four Eq settings on OUT 3 & 4, which are linked, We needed to boost 250Hz by 4.00dB
with a tight 25.00Q bell. We cut by 4.00dB 700Hz with a quite wide 5.00Q (pink shaded area) We boosted by 1.00db 1.0kHz,
with wide 1.00Q.
All above operations have been suggested by overall sound system in venue, as checked with a spectrum analyzer. Ops... The
Bell @ 20kHz is activated but it doesn’t affect the overall sound, since its Gain is 0.00dB(!) and the frequency response @ 20kHz
is hardly cut by 3.50kHz Butterworth LPF!
This screen display also the 120Hz 24dB Bessel HPF and 3.50kHz Butterworth 24dB LPF, no delay, and Limiter section THR @
0.00 (it’s “off”) and REL @ 50.00
The overall result of above settings is shown by white line.
6.6.3 HIGH
In above example we did just one Eq setting on OUT 5 & 6, which are linked. To obtain a better dispersion we used a High Shelf filter tuned @
5.00kHz with just 1.00dB boost, so achieving the green area increment.
This screen display also the 3.50kHz Butterworth 24dB HPF and no LPF and delay. In order to prevent our drivers from any damage, we set the
Limiter section THR @ -5.00, but with a very fast REL setting @ 1.00
The overall result of above settings is shown by white line.

Owner’s manual | LM 260 Loudspeaker Management Processor
18
LM 260
LOUDSPEAKER MANAGEMENT PROCESSOR
7. TROUBLESHOOTING
No response
Check the mains power cord is firmly plugged.
Try to turn ON other units the check if they’re powered. If the LCD is lit, the unit needs maintenance.
No output sound
Please check the connections. Check the MUTE front panel keys status. Check the Output Gain settings.
LCD not lit
Please check the power supply cord, otherwise your unit needs maintenance.
Inputs indicator do not lit
Check the input signal (the signal from your audio source).
Distorted sound
Check the signal output from your source. Check the INPUTS levels and your “Gain In” settings.
Then check the OUT Gain settings.
Check the processing parameters, in particular EQ settings.
Check also the output signal path, i.e. if the LOW outputs are wrongly connected to MID amplifiers inputs
LM260 needs immediate maintenance in following cases:
1. If water or other liquids have dripped over or into the cabinet
2. When you feel an unpleasant smell of burnt
3. If the cabinet has severe indentation and deformation
4. When the keys and/or the DIAL are stuck
In above cases and in any other situation where you feel your LM260 is not properly working, please immediately contact your dealer, your
country tech support, or us writing to: mail@fiveo.it.

LM 260 Loudspeaker Management Processor | Owner’s manual
19
LM 260
LOUDSPEAKER MANAGEMENT PROCESSOR
ANALOG INPUTS
Number of Inputs 2 XLR 3-F
Input Impedance > 10kΩ
Input sensitivity +4dB
Input gain Adjustable from +12dB to -50dB, with 0.25dB steps
ANALOG OUTPUTS
Number of outputs 6 XLR 3-M
Output Impedance < 60kΩ
Output sensitivity +4dB
Output gain Adjustable from +12dB to -50dB, with 0.25dB steps
Max Output level +9dBu, with 600Ω load
TECHNICAL SPECIFICATIONS
Sampling frequency 96kHz
Frequency response 20Hz ÷20kHz
THD+N +10 to +60 dB
PARAMETERS
Max delay 5ms
Turnover Frequency (High pass/Low pass) 20Hz ÷ 20kHz, 1Hz step
Center Frequency (High pass/Low pass) 20Hz÷20kHz, 1Hz step (19980 positions)
Filter gain +12dB to -12dB, 0.25dB step
High pass/Low pass Filter FilterFilter Q Value 0.2-0.25, step pitch 0,1
Crossover types Bessel/Butterworth 6/12/12/24dB-oct, Linkwitz-Reily 12/24dB-oct
Limiter Threshold from +9dBu to -50dBu
Releasing time 1-100
Phase 180° phase
Input level meter 2x7 spot, from -30dB to digital clipping
Output level meter 6x7 spot, from -30dB to digital clipping
Language selection English, German, Spanish, French, Dutch
Version info Versions info for hardware, software and DSP module
PHYSICAL
Dimensions (WxDxH) 482 x 125 x 44.5 (mm.) 19” x 5” x 1.3/4”
Packaging dimensions (WxDxH) 565 x 210 x 120 (mm.) 22.1/4” x 8.1/4” x 4.3/4”
Gross weight 3.5kg (7.3/4lbs)
Power supply AC 115/230V, 50/60Hz
Power Consumption <10W
8. TECHNICAL SPECIFICATIONS

LM 260
LOUDSPEAKER MANAGEMENT PROCESSOR
The information contained in this manual have been carefully drawn up and checked. However no responsibility will be assumed for any incorrectness.
This manual cannot cover all the possible contingencies which may arise during the product installation and use. Should further information be
desired, please contact us or our local distributor. Elettronica Montarbo srl can not be considered responsible for damages which may be caused to
people and things when using this product. Specifications and features are subject to change without prior notice.
Elettronica Montarbo srl
via G. di Vittorio 13 | 40057 Cadriano Granarolo Emilia (BO) ITALY
T+39 051 6047711
F+39 051 765226
@mail@fiveo.it
www.fiveo.it
Company under the control of EKO Music Group SpA
© Elettronica Montarbo srl | Printed in China
The product is made in China under license of Elettronica Montarbo srl.
The product is compliant with the EU legislation.