Ecler nuo4 User Manual

USER MANUAL

MANUAL DE INSTRUCCIONES

MANUEL UTILISATEUR

BEDIENUNGSANLEITUNG

2

User Manual Contents

1. IMPORTANT REMARK 04

1.1. Safety Instructions 04

1.2. Warranty Descriptions 04

2. INTRODUCTION 05

3. INSTALLATION 05

3.1. Audio inputs connections 06

3.2. Audio outputs connections 07

4. QUICK START 08

5. OPERATION AND USAGE MANUAL 09

5.1. Start-up 09

5.2. Control Description 09

6. MIDI CONTROLS 12

7. MIDI CONTROL OPERATION 15

8. FURTHER CONSIDERATIONS 18

9. FUNCTION LIST 19

10. FUNCTION DIAGRAM 19

11. TECHNICAL CHARACTERISTICS 71

12. DIAGRAMS 72

12.1. Figures 72

12.1.1. Connection diagram 72

12.1.2. Rack ear system (Fig1) 73

12.1.3. Internal jumper configuration 74

13. BLOC DIAGRAM 75

All numbers subject to variation due to production tolerances. ECLER S.A. reserves the right to make changes or
improvements in manufacturing or design which may affect specifications.

3

1. IMPORTANT REMARK

1.1. Safety Instructions

In order to get the optimum operation and efficiency from your mixing unit, it is VERY IMPORTANT - before you
plug anything - to read this manual very carefully and take seriously into account all considerations specified within
it. We strongly recommend that its maintenance be carried out by our Authorised Technical Services.

This apparatus must be earthed through its mains cable.
Do not expose the unit to rain or water splashes, and do not place liquid containers or incandescent
objects like candles on top of the unit. Do not obstruct the ventilation shafts with any kind of material.

Any change in the configuration of the unit must be carried out by a qualified technician. Should any
connection / disconnection task be done, always disconnect the unit from the mains supply.

1.2. Warranty Descriptions

Your ECLER equipment has undergone exhaustive laboratory and quality control tests before leaving the factory.
Nevertheless, your may be in need of our Technical Service during the period covered by the Guarantee or
afterwards. In that case, carefully protect your equipment in its original packet and send it to our Technical Service
with the transport and insurance paid. Attach a photocopy of your Guarantee Certificate and a detailed description
of the defect you have observed.

ECLER, S.A. guarantees its ECLER products against material or fabrication defects for a ONE-YEAR period (3
YEAR period in SCLAT and NUO series mixers and in the SPM technology amplifiers and 5 YEAR in the
ETERNAL potentiometers) after the date of original purchase.

ECLER, S.A., will repair the defective equipment within the aforementioned period, with no charge for parts and
labour.

To ensure the validity of the Guarantee, it is essential that the attached Guarantee, Registration Card is filled out
correctly and remitted to your ECLER distributor, within 10 DAYS after date of purchase.

The Guarantee is non-transferrable and protects the original buyer only.

The Guarantee does not cover:

- Damages caused by mistreatment or negligent handling, lack of elementary precautions, disregard to the
instructions in the manual, faulty connection or accidents.

- Sets that have been manipulated, altered or repaired other than at the authorized Technical Service centers.

- The exterior fittings and electro-mechanical parts, nor their wear due to use.

- Shipping and insurance expenses, nor for damages the set may incur during its transport.

ECLER, S.A., will not be held responsible for any direct or indirect damage, loss or other damage originated by or
relating to the set.

This Guaranteed is valid only for repairs or services carried out at an authorized Technical Service Center.

4

2. INTRODUCTION

Congratulations! You are the owner of a genuine ECLER professional equipment. The NUO4 has been carefully
designed in collaboration with leading dj performers and advance music producers, developed with the highest
quality components, and manufactured in-house (Barcelona-Spain) under strict quality controls.

The NUO4 is a five-channel stereo mixer with capacity for 11 separate sound sources.

Due to its robustness and format, the NUO4 is mainly dedicated to professional mixing applications (club,
homestudio), or anywhere where a compact sized, high performance mixer is required.

3. INSTALLATION

The first thing to take into consideration when placing your NUO4 is your comfort and an easy access to all the
connections. The NUO4 is basically conceived as a tabletop mixer and its usual placement will be between two
vinyls or CD players. The mixer has a 14.57’’ (37cm) depth and 12.6’’ (32cm) width format. The optional metallic
side profiles kit allows you to firmly fix your mixer to the surface over which it is placed or over its own profiles
(Fig.1). These profiles also allow to tilt the mixer's position for an easier operation. There is another metal brackets
option ('NUORAKI') that allows the mixer mounting in a standard 19" rack.

Because of the high gain of the PHONO and MICROPHONE inputs, always try to place the mixer as far away as
possible from noise sources (dimmers, engines, etc.) and mains wires. For the very same reason, and under any
circumstance, you should never remove the unit's metallic cover.

The power consumption of the NUO4 is very low, so they do not need any cooling, but you should avoid extreme
temperatures and the atmosphere should be as dry and dust free as possible.

The NUO4 operates now with a new universal input power supply “Switching Power Supply” and can perfectly
works without any internal modification from 90V to 264V – 47 to 63Hz. Make sure that the mains-wire is far away
from the signal-cables in order to avoid any possible audio hum.

In order to protect the unit from an eventual electrical overload it carries a T 500mA fuse. Should it ever blow up,
unplug the unit from mains and replace it with an identical one. If the new fuse blows again contact immediately
with our authorized technical service.

ATTENTION: NEVER SHORT-CIRCUIT THE SECURITY PATH NOR USE A HIGHER VALUE FUSE.

CAUTION: Fuse substitutions have to be performed by a qualified technician.

5

3.1. Audio inputs connections

Input 1 H-LINE CD player
Input 1 PHONO Turntable
Input 1 L-LINE Computers, Recorders...

Input 2 H-LINE CD player
Input 2 PHONO Turntable

Input 3 H-LINE CD player
Input 3 PHONO Turntable

Input 4 PHONO Turntable
Input 4 H-LINE CD player
Input 4 MIC Microphone

Input 5 (computer) AUDIO IN Sound card

PFL Monitoring

- Phono Inputs:

Phono Turntables must be fitted with a magnetic cartridge with nominal output level between -55dBV and -25dBV
(1,77 to 56mV). The PHONO inputs (42) of the NUO4 have a high headroom (margin before saturation) and it can
handle higher output cartridges than what is usual. These inputs are supplied with a nominal input sensitivity of

-40dBV (10mV). The NUO4 has two oversized ground terminals to connect the turntables ground wire.

- Line Inputs:

Given the important level differences between usual LINE and CD sources, the NUO4 provides specialized inputs
for each source. The sensitivity of the HIGH LINE (41) input is 0dBV (1V), while the LOW LINE (43) sensitivity is

-10dBV (316mV). CD Players, DAT, MP3, and DVD Audio should be connected to the HIGH LINE input. Tape

players, tuners and some production devices (samplers, sequencers) should be connected to the LOW LINE input.

- Microphone Inputs:

The MIC input (49) is ready for a nominal input level of -50dBV (3.16mV) and is equipped with a XLR3 connectors.
The MIC ATT switch on the rear panel (48) allows a 20dB attenuation on the input sensibility, so that it is changed
from –50 to –30dB (3.16 to 31.6 mV). The connection of balanced signals is as follows:

Hot or direct signal > Pin 2
Cold or inverted signal > Pin 3
Ground > Pin 1

Low impedance (200 to 600Ω) monophonic microphones must be used. In case of working with an unbalanced
connection Pin 1 and Pin 3 must be short-circuited. The NUO4 features a Phantom power supply for the
connection of condenser microphones. A set of internal jumpers allow you to inhibit the phantom power for the
microphone. The default setting of these jumpers on the NUO4 is "Phantom ON". See configuration diagram.

- Computer input

AUDIO IN: This input has a -10dB rated sensitivity, for a correct level matching with sound cards outputs, allowing
a gain adjustment between -∞ and 0dB.

PFL: It has a rated sensitivity of 0dB. This input is designed for prelistening with audio mixing software. It must be
connected to a second sound card's output.

6

3.2. Audio outputs connections

Out 1 Main power amplifier

Out 2 Booth/Room2 power amplifier

Rec Recording

External FX External effect device
(Send and Return) (Input and Output)

Monitor Headphones

- Master Output 1:

These stereo outputs feed the main house P.A. system through a XLR3 Balanced connections. The OUT 1 (55-56)
level is set at 0dBV (1V) but can be changed to +6dBV (2V) through internal jumpers. OUT 1 is controlled by
MASTER 1 (24) level potentiometer.

- Master Output 2:

Commonly used as an independent local "Booth" output for the DJ. This stereo OUT 2 (54) has unbalanced RCA
connections and its level is set at 0dBV (1V) but can be changed to +6dBV (2V) through internal jumpers. The
OUT 2 level controlled by the MASTER 2 (25) potentiometer.

OUT 1 and OUT 2 additionally have a BAL balance control (27) and a common L+R mono/stereo switch (26) for
both outputs.

- Recording Output:

This output pair uses RCA type connectors. REC (53) is placed on the rear connection panel. The nominal level of
the REC output is 0dBV(1V).

- External loop:

The RCA type EXTERNAL FX output SEND (51) and input RETURN (52) allow you to create an external loop with
any effect, sampler or sequencer device. The signal sent to EXTERNAL FX SEND output is selected PRE- or
POST-fader by the FX SEND (11) toggle switch, while its associated knob (10) determines the level.

The nominal levels of the SEND output and RETURN input is 0dBV (1V).

- Headphones:

In order to obtain a high performance, these should be of the high impedance type (200-600Ω). Plug them in of the
two MONITOR outputs (21), in the front panel or top panel, by means of a standard stereo jack. Sleeve is Ground,
Ring is Right Channel and Tip is Left Channel.

7

4. QUICK START

Install and connect the NUO4 as described in the INSTALLATION paragraph nº1.
We will describe a “Quick Start” procedure using the H-LINE input of channel 1 and headphone monitoring output
only.

1

st

- Set the channel controls. Set the input switch (2)

to H-L. Set Channel 1 GAIN, TREBLE, MID, BASS
(1, 5, 6 y 7) rotary controls to their detented centre
position. Set the BASS OFF (8) switch to its up
position (BASS ON). Set the channel fader (13) to its
down position and assign the XFA/MIX/XFB (12)
selector to XFA (your channel is assigned to
crossfader A side).

2

nd

- Adjust the MONITOR VOL (22) to its minimum,

and move the MONITOR PFL/MIX (23) control to
MIX position.

3

rd

Connect a CD player to the channel 1 H LINE

input (41).

4th- Connect a pair of headphones to the MONITOR
Jack output (21).

5

th

- Connect the AC main power cord (58) to the

back of the mixer and switch ON (57) the mixer.

6th- Check that the POWER LED below the
VU-Meter (28) is lit.

7th- Start the reproduction of a CD music track.

8th- Press the yellow led PFL (9) button on channel 1

and adjust GAIN so that the left VU-Meter stays
around 0dBV.

9

th

- Set the channel fader (13) to its up position and

place the crossfader (14) on the "A" side.

10

th

- Adjust the MONITOR VOL (22) in order to

reach a "comfort" sound level in your headphones.

11th- Check the powerful 3 band stereo equalization
(5-6-7). The EQ system is designed for creative
sound performance: each band can be
independently isolated (OFF) through a large
ergonomic rotary control, and a BASS OFF switch
allows a fast bass frequency “kill” effect.

12

th

- Check the crossfader (14) action

MIX position bypasses the crossfader function. The crossfader will allow you to fade the signals assigned at each
side A & B of the slider. The movement of the crossfader allows you to create a smooth music track blend or a fast
"scratch" sound cuts. The fade curve can be very precisely adjusted thanks to the CUT-IN (19) knob* (fade-in
point), the SWITCH/FADE selector (17) (Rounded or Squared curve), the REVERSE selector (18) (Reverse the
sense of the crossfader) and fine curve control (20).

For further operations, please read the rest of this manual.

*Only if an “eternal” crossfader is installed.

8

5. OPERATION AND USAGE MANUAL

5.1. Start-up

To switch the mixer on push the switch labelled POWER (57) located in the rear panel. After a short time, the
POWER LED below the VU-Meters will light up. Although the switching noise produced by the NUO4 is very low
and almost inexistent when starting up the NUO4 with the main faders down, we highly recommend the "safe
power-up sequence", which means that you should switch on your audio devices in the following order:

1. Sound sources.

2. Mixer, equalizers, active filters.

3. Finally, power amplifiers.

Powering off should be done by following the exact reverse sequence in order to avoid any possible damage to the
loudspeakers.

5.2. Control Description

5.2.1. Input selector

Each channel features an input toggle switch selector (2).

5.2.2. Channel gain

All NUO4 inputs have an accessible input GAIN/sensitivity control (1) to compensate existing level differences
between connected sound sources and the console before mixing. The gain settings must be made with extreme
care using SP (Signal Present) (3) and PEAK (2) LEDs, Vu-Meter and/or phones monitoring as a reference. The
standard reference level to mix audio signals is 0dBV. In order to obtain an optimal mixing, set the input level as
close as possible from 0dBV on the PFL Vu-Meter and make sure to never reach the clipping level, using red
PEAK LEDs as a warning for each channel.

5.2.3. Equalization

The rotary tone controls for each channels provide a +10/-30dB boost/cut range for the bass (7) and treble (5)
bands, and +10/-25dB at the mid range (6). This great attenuation range is specially designed for creative live
performance. Also the bass frequencies can be “killed on the fly“ activating the BASS OFF switch (8) located below
each BASS rotary knob.

ATTENTION: Use equalization carefully, by boosting too much the low frequency range, you can induce an
excessive displacement of the speakers membrane.

5.2.4. Monitoring System

The NUO4 is equipped with a flexible and easy monitoring system that will allow the performers to finely tune PFL
(Pre-fader listening) and Mix levels of each input through the VU-METER and the HEADPHONES.

Each channel can be monitorized visually and pre-listened pressing the dedicated yellow led PFL (9) button.

For HEADPHONES monitoring, the PFL/MIX rotary potentiometer (23) allows you to blend a selected PFL together
with the main MIX Program. The VOL rotary potentiometer (22) controls the level of headphones output.

The NUO4 can display (28) at the same time PFL R+L signal (on the first left VU-METER bar) together with the
Main MIX Right and Left signals (second and third VU-METER bars).

9

5.2.5. Channel send to external effect units, FX SEND

All 4 channels of the NUO4 are equipped with rotary potentiometers (10), which allow you to send the channel
signal to an external effects unit (reverb, sampler, etc.). These pots determine the amount of signal that is sent for
each channel. The SEND output (51) must be connected to the input of the effects processor, and the output of the
latter can be fed back via the RETURN input or a LINE input.

This signal send can be configured either PRE- or POST-fader with the PRE/POST toggle switch (11), so that the
level is affected or not by the channel fader.

5.2.6. Channel Faders

The NUO4 uses a new generation of 60mm ECLER faders (13) featuring an improved precision and very smooth
movement, a very fast cut-in-time, and extra long life performance tested up to 4.000.000 operations when
combined to the ECLER VCA system (VCA=Voltage Controlled Amplifier).

The use of VCAs makes possible to edit the fader behaviour. In the front panel FADER SHAPE section, there are
two controls: NORMAL/REVERSE switch (15) allows to reverse fader operation, 0 for an open channel, 10 for a
closed one (channels 1 and 4). Rotary potentiometer SOFT/HARD (16) allows to shape the curve between these
two ends, smooth or abrupt arrival in the four main channels.

All 4 channels can be routed to the NUO4 crossfader using the toggle switch (12). “XFA” position routes the
channel to the A side of the crossfader, and “MIX” position means the channel will not be affected by the crossfader
(assigned to the main MIX always).

5.2.7. Crossfader / “eternal” crossfader upgrade

If you want to extend the crossfader operation life, the NUO4 allows an upgrade to the renowned “eternal”
potentiometer.

The ECLER ETERNAL Crossfader is an inductive fade technology based on a magnetic control. An extremely light
aluminium screen (0,5 gr.) cuts the flux lines of a magnetic field created between two sets of coils. This
electromagnetic modulation controls an assigned Voltage Controlled Amplifier that modifies the gain/attenuation of
the signal. The contactless technology is combined with a custom high quality glides mechanism to offer a very
smooth touch and succeed the most accurate Crossfader system! The ETERNAL concept does have obvious
advantages upon other existing systems using optical technology. Unlike optoelectronic elements, the inductive
concept is resistant to smoke, moisture, temperature and aging. The ETERNAL inductive crossfader has been
specifically designed for performing “turntablism” techniques.

The ETERNAL Crossfader also features new “tuning” features grouped in the XFADER SHAPE section that will
give the NUO4 the most accurate Crossfader adjustment:

SWITCH/FADE selector (17): depending of how sharp you want to get your “scratches”, the NUO4 allows you to
set-up the crossfader performance in FADE or SWITCH. The FADE Mode will give the crossfader a progressive
“roll-off” curve meanwhile the SWITCH Mode will “square” the crossfader curve in order to perform almost as a
Switch for fast “scratches”. Additionally, Both curve modes can be finely tuned with the dedicated potentiometer
(20).

NORMAL/REVERSE Switch (18): so-called “Hamster Switch”, which reverses the crossfader normal direction.
Depending on the chosen "fader direction", you can perform “cuts” and “transforms” by moving the Crossfader in
the same direction.

Electronic CUT-IN-TIME correction (19): This feature is only available if the optional “eternal” crossfader is
installed. In case the standard crossfader is used, the CUT IN adjustment should be turned OFF. The “Cut-in-time”
is the distance between the extreme end of the crossfader and the very first “fade-in” point. The shortest position
will give you almost an instant “Cut-in-time”; to find the shortest “Cut-in-time”, the crossfader must be locked on the
very end of the potentiometer in fade-out position (the PGM is fully attenuated) and the CUT-IN-TIME knob must be
turned to the right until (just before) you get the sound. To lengthen the crossfader “Cut-in-time”, turn the knob to
the left.

10

Both standard and “eternal” potentiometers share the same type of connection. To install the “eternal” crossfader,
please follow these steps.

5.2.8. Replaceable VCA Faders and Crossfaders / “eternal” upgrade

Once any of these components has reached the end of its operating life, it can be easily replaced following these
simple steps:

1. Remove the buttons and the screws on the bottom panel.

2. Remove the two screws that hold the potentiometer to be replaced, and take it out of the mixer.

3. Disconnect the multipin connector.

4. Replace the part with an identical one or with the “eternal” crossfader.

5. Connect the multipin connector.

6. Place the fader back in the mixer and secure it with the two screws.

7. Secure the bottom cover plate with its screws and insert the buttons back in.

Always use original ECLER replacement parts.

5.2.9. MASTER Levels

The NUO4 features two main output level controls MASTER 1 (24) and MASTER 2 (25). The OUT 1 (55-56) level
is controlled by the MASTER 1 level knob. The OUT 2 (54) level is controlled by the MASTER 2 level knob.

The BAL balance potentiometer (27) affects MASTER 1 output as well as MASTER 2 output.

11

6. MIDI CONTROLS

The NUO4 is a DJ mixer that allows to control external devices using MIDI protocol. MIDI functions that are
assigned to each control are user programmable with Ecler Control 4 Lab software.

MIDI (Musical Instruments Digital Interface) is a standard communication protocol between electronic musical
instruments and computers. A MIDI device can operate as a slave (controlled) or master (controller). NUO4
operates as a master unit, which means that it is able to control other electronic musical instruments (synthesizers,
sequencers, rhythm machines, and software... even light controllers). Also, the NUO4 can receive MIDI messages
but only for programming with Ecler Control 4 Lab software.

MIDI OUT connection is done through a standard 5-pin DIN connector (180º). The mixer also incorporates a
USB-MIDI interface to send and receive MIDI information between the mixer and a computer through USB port.

NUO4's MIDI messages belong to 'Channel Messages' and 'System Messages' categories. Transmitting and
receiving devices must be set on the same channel for the message to be communicated.

The NUO4 sends three different types of MIDI messages:

• Note-On and Note-Off messages

• Control Change messages

• System Real-Time Messages

6.1. Connections

There are two audio input connection modes for MIDI-controlled external devices:

• Connecting the external device to any NUO4 H-LINE input.

• Connecting the external device to NUO4 Input 5 (equipped with a gain control)

Device connection is especially important when using DJ software. For this reason, a soundcard with at least two
outputs is recommended.

There are two operating modes to use DJ software with NUO4:

• Using the DJ software virtual mixer that is MIDI-controllable from channels 2 and 3 of the NUO4. In this
case, you would have two outputs on the sound card: one for the MASTER signal and another one for the
PFL signal, which connect respectively to INPUT 5's AUDIO IN and PFL of your mixer.

• Without the software virtual mixer, therefore using channels 2 and 3 of the NUO4 in analog mode. In this
case, the two sound card's outputs are for the two virtual players and will be connected to any H-LINE
input.

6.2. Mixer channels with MIDI messages sending capabilities

Channels 2 and 3 of the NUO4, in addition to their analog operation with PHONO and H-LINE, allow to send MIDI
messages controlling external devices. In order to do that, you have to select the MIDI option with the input
selector. The main application is the control of similar functions (GAIN, EQ, FADER...) on a DJ software virtual
mixer.

12

Available MIDI Controls for each channel:

• 5 rotary controls sending Control Change messages (GAIN, BASS, MID, TREBLE and FX SEND)

• 2 sliders sending Control Change messages (FADER and CROSSFADER)

• 2 switches sending Note-On/Off messages (BASS OFF and PFL)

These MIDI controls are not affected by LAYOUT and A/B selectors in MIDI CONTROL section.

At least one channel input selector and the same channel crossfader assignment must be simultaneously set in
MIDI mode for the crossfader to operate in MIDI mode. In MIDI mode the curve controls do not affect fader and
crossfader operation. Physical position of the rotary and sliding controls can slightly differ between NUO4 and
software.

MIDI controls absolute position for channels 2 and 3 does not automatically update in the external device when you
select MIDI with the input selector. The rotary commands update their position when you move them for the first
time, independently of the external control it is linked to.

As an alternative, to update all controls for a channel, keep the TAP button pressed while you select MIDI with the
input selector.

6.3. Dedicated MIDI control area

The NUO4 has 12 controls exclusively dedicated to send MIDI messages:

• 4 rotary controls (1A - 1D)

• 4 buttons (integrated to the rotary controls) (2A - 2D)

• 4 buttons (3A - 3D)

LAYOUT and A/B selectors do not send MIDI messages but allow the 12 controls
described above to send different messages. This multiplies the amount of messages
to be sent by specific MIDI controls.

A/B switch allows to double the 12 MIDI controls functions. A natural use for A/B switch
is to assign the same mixer button to a same function for two different channels in DJ
software.

For example, let's suppose that you have a DJ software with a mixer and two virtual
players. You want to assign PLAY to the 3B button; A/B switch allows you to send two
different MIDI messages and thus to execute the same function for each player. This
way you obtain:

• PLAY for left player: press 3B with switch in A position

• PLAY for right player: press 3B with switch in B position

LAYOUT selector allows you to send three different messages from each one of the 12
MIDI controls. Its natural use is to assign all the NUO4 MIDI section to three different
parts of DJ software.

For example, let's suppose that you want to control player, effects and sampler parts of
your DJ software. You'll distribute NUO4 MIDI controls this way:

• LAYOUT in position 1: control of DJ software player section

• LAYOUT in position 2: control of DJ software effect section

• LAYOUT in position 3: control of DJ software sampler section

13

Therefore, 3B button could for example execute these functions:

• To activate PLAY: press 3B with LAYOUT in position 1

• To activate FLANGER: press 3B with LAYOUT in position 2

• To activate REC SAMPLER: press 3B with LAYOUT in position 3

In addition, with A/B switch described above, you can execute all these functions for a channel or another one in
your DJ software. This way:

• To activate REC SAMPLER for right player: press 3B with LAYOUT in position 3 and A/B switch in
position A

• To activate REC SAMPLER for left player: press 3B with LAYOUT in position 3 and A/B switch in
position B

In summary, LAYOUT and A/B combinations allow to send 6 different MIDI messages from each of the 12 NUO4
dedicated MIDI controls. Therefore, you can send a total of 72 different MIDI messages.

The controls of the specific MIDI control section can be related to any NUO4 MIDI channels (INPUT2 or INPUT3) or
can operate independently. If they operate as independent controls, they will always send MIDI messages even if
MIDI is not selected with these two channels input selectors. On the contrary, if a control is related to a specific
channel, it will only send MIDI messages with this channel in MIDI mode. This assignation is done with
Ecler Control 4 Lab software.

6.4. Real-time messages

6.4.1. MIDI Clock

The NUO4 transmits a standard timing message named MIDI Clock, to synchronize one or several external MIDI
devices. The synchronization signal is the same message sent 24 times per quarter note.

To control a MIDI device, remember this device has to operate in slave mode (external Clock).

The NUO4 has no internal processor for BPM calculation. The tempo for a specific musical part has to be manually
set, repeatedly pressing the TAP button (a minimum of 5 times) to the desired tempo. The TAP button blinks to the
BPM rate you established.

A more precise BPM adjustment can be done assigning one of the MIDI controls to this function with
Ecler Control 4 Lab software.

MIDI Clock can be deactivated by holding down the TAP button more than 3 seconds. When this happens, TAP
button does not blink. Once deactivated, it will not operate until you explicitly activate it by holding down the TAP
button more than 3 seconds. The selected mode will be maintained after shutdown.

Tempo default value is 120 BPM after each shutdown or MIDI Clock activation.

6.4.2. Start, Stop and Continue messages

When an external device is synchronized by MIDI Clock, standard Start, Stop and Continue messages are used to
control the playing.

Any NUO4 MIDI button can send these messages. Programming is done with Ecler Control 4 Lab software.

14

7. MIDI CONTROL OPERATION

7.1. Drivers installation

To connect the NUO4 to a computer using USB-MIDI interface, you must previously install USB and MIDI drivers
(provided on the CD). The process varies according to the operating system in use. The only supported operating
systems are Windows® 2000 (SP4) and XP.

7.1.1. Windows® 2000

Warning: before connecting the NUO4 to its computer, please perform the following steps. Any other kind of
installation could cause the computer to unexpectedly reboot. This is due to certain peculiarities in Windows® 2000
concerning MIDI devices support through USB.

1. Before connecting the NUO4 to the computer for the first time, run 'install.exe' from the 'Driver' folder on the
CD.

2. When the installer screen comes up, check that the NUO4 is disconnected and press 'Yes' to continue.

3. The 'Digital Signature Not Found' error message may appear during USB driver installation. If it does, click
YES to proceed with installation.

4. Restart your computer when the wizard tells you to do so.

5. After restart, connect the USB cable between the NUO4 and the computer.

6. The operating system will automatically detect the device. There may be a long pause while the operating
system detects the device until the end of the process.

7. Again, if the 'Digital Signature Not Found' error message appears, click YES to proceed with installation

8. Once the process completed, the NUO4 is identified as 'Ecler USB Midi' by the operating system.

9. To safely disconnect NUO4 USB cable, follow the Windows® 2000 standard method to 'Unplug or eject
hardware'. If the USB cable is directly removed a warning appears to inform you that the device extraction
has not been safely done.

7.1.2. Windows® XP (home or professional)

1. Check that the NUO4 USB cable is disconnected and start your computer.

2. Run 'install.exe' program form the “Driver” folder on the CD.

3. Install program will request the user to connect the NUO4 USB cable to the computer and to wait until the
operating system completes the drivers automatic default installation. Do not click 'Accept' until
Windows® XP tells you that the new device is ready to use (If you do it before, the installer tells you that he
can't complete installation and you have to restart the computer before retrying. Carefully follow all the
steps indicated in this manual). Caution: There may be a long pause while the operating system
detects the device until the end of the process.

4. Once Windows® XP tells you that the new device is ready to use, click 'Accept' to proceed with installation.

5. If XP Logo testing warning windows appears indicating that the driver you're going to install is not certified,
click 'Continue anyway' to proceed with installation.

6. Once the process completed, the NUO4 is identified as 'Ecler USB Midi' by the operating system and is
ready to use.

15

ATTENTION: With Windows® XP, if you connect the NUO4 to different USB ports on your computer, you'll have to
repeat the installation for each port and to restart your equipment each time. On the contrary, if you use
Windows® 2000 and connects the NUO4 to different USB ports on your computer, you won't have to repeat the
installation for each one of them, the system automatically identifies them.

We recommend visiting Ecler's web page (www.eclerdjdivision.com) in order to check if driver or software updates
are available.

7.1.3. NUO4 driver uninstall

In order to uninstall NUO4 drivers from any operating system, disconnect first NUO4 USB cable from the computer.
Run 'uninstall.exe' program from the 'Driver' folder on the CD.

1. Follow the wizard instructions.

2. Once the process completed, NUO4 USB-MIDI drivers are uninstalled from your operating system.

This utility uninstalls drivers for all ports on the same computer.

7.2. Controls programming

A same MIDI control can be configured to send different types of message depending on the specific needs of the
external device the user has to control. Programming is done from Ecler Control 4 Lab software.

7.2.1. Rotary controls

The different messages MIDI rotary controls can send are:

• Incremental control: it sends a control change message with the value increase to be done on the related
control; if it is rotated to the right, increments are sent (value 1 to 4) and if it is rotated to the left,
decrements are sent (value -1 to -4). This type of message is well suited for NUO4 MIDI rotary controls 1A
to 1D when you want to manipulate rotary or sliding controls, since they correctly operate independently of
the absolute position they have.

• Absolute control: it sends a control change message with the current absolute value the related control
must have. The value range is 0 (completely to the left) to 127 (completely to the right). The rotary and
sliding controls of NUO4 channels 2 and 3 only accept this mode. Although this mode is not so useful with
NUO4's MIDI controls 1A to 1D, it has been implemented for compatibility.

• Two unlatch buttons: turning to the right sends a Note-On/Off message and turning to the left sends a
different one. This type of message is well suited when you want to control a pair (like up/down, +/-…) with
a rotary button.

• Any NUO4 MIDI control 1A to 1D can be used to finely adjust the tempo (BPM). In this mode no MIDI
command is sent.

16

7.2.2. Control buttons

The different MIDI messages that control buttons can send are:

• Unlatch button (normal push switch): it sends two different note messages (Note-On when pressed and
Note-Off when released). It is well suited to control functions needing a temporary state change while the
button is pressed. An example is pitch adjustment that you activate as long as the button is pressed.

• Latch button (toggle push switch): it sends only one Note-on message whenever it is pressed. It is
appropriate when you want to control functions needing a permanent state change when pressing the
button. An example is the play function of a CD player that is activated by a simple pressing on the button
and vice versa.

• Any NUO4 MIDI button can send real-time messages (Start, Stop and Continue). Programming is done
with Ecler Control 4 Lab software.

7.2.3. Recommendations

As starting point we recommend to configure all rotary controls in incremental mode and buttons in momentary
mode, and to match your software MIDI control configuration to obtain optimal operation.

If your software does not allow suitable settings of these controls, try to modify the MIDI message that the NUO4
sends with Ecler Control 4 lab.

7.3. Assignment advice for external device functions

There is no universal method to assign functions, since each external device has its own particularities.

Our first advice is to spend the necessary time for indepth knowledge of MIDI control capabilities and how to
program them. Most of the external devices with MIDI control can be set; it means you can define the message
each control will respond to.

The second step consists of choosing the external device functions to control and assigning them to the NUO4
MIDI controls. As you should consider different aspects, we pointed out some of the most relevant ones:

• Allocate controlled functions in a logical manner, grouping them by blocks in the three LAYOUT sections
(1/2/3). For example, try to group all player-related functions in a same LAYOUT (Play, Cue, Pitch Up...),
all the effect-related ones in another LAYOUT (Flanger, Echo, Delay...).

• Consider if certain functions have to be kept on the same button independently of LAYOUT position. For
example, if you want the 3B button to execute the PLAY function whatever the LAYOUT and A/B selectors
position is.

• Think if you want to use channels 2 and 3 in analog or MIDI mode.

In order to reach these objectives, you'll probably need to first edit the NUO4 internal programming and to correctly
configure the external device. From Ecler Control 4 Lab check (and if necessary correct):

• that the NUO4 controls send the appropriate type of message to execute the desired function in the
external device

• that the MIDI channel used by the NUO4 is the appropriate one for your external device

• that messages are the appropriate ones for your external device

• that controls having a same function send identical messages

17

Once the configuration has been set up, update your mixer firmware. Then configure your external device so that it
responds to MIDI messages the NUO4 sends. Each external device has its own learning method:

• select the MIDI learning mode

• choose a function on the external device

• move a NUO4 control to send a MIDI message

• the external device combines this MIDI message with that function and store it

7.4. Label printing

Once concrete functions have been assigned to NUO4 MIDI controls, you'll have to identify each button's function.
For this, the NUO4 incorporates an innovative label system.

On the Ecler Control 4 Lab CD-ROM, you'll find a folder dedicated to label printing with two files: one
Microsoft® Word file (.doc) and one CorelDRAW® file (.cdr).

Type the name of the functions that are assigned to MIDI controls and print labels, preferably on transparent paper.
Trim the labels and place them in front of the windows of the magnetized plate through lateral grooves.

8. FURTHER CONSIDERATIONS

8.1. Ground loops

Ensure at all times that no signal sources reaching the mixing desk and no devices connected to its output have
their earths interconnected; that is, earth should never reach them via two or more different paths, as this could
lead to humming which could even interfere with sound reproduction quality. In order to avoid earth loops, ensure
that the shielding of cables, if connected to the chassis, are never connected with each other.
When you connect computer and sound equipment, 'hum' frequently appears, caused by an earth loop. In this
case, it is usually advisable to make the connection through an accessory known as earth loop eliminator, available
in specialized shops.

8.2. Audio connections

As a general rule of thumb, make the signal connections as short as possible and use the best connectors and
cable available. Cables and connectors are frequently held cheap, forgetting that a bad connection can result in a
poor sound quality.

8.3. Background noise

The use of active circuitry can yield, depending on the configuration, to a significant noise level. The NUO4 has
been designed for the minimum possible noise. Anyway, the noise level will always depend on the correct use and
installation of the mixer. It is not the same setting up the FADER at "2" and the MASTER at "10" that the other way
round; FADER at "10" and MASTER at "2". In the first case you get a poor signal to noise ratio that will be fully
amplified by the master while on the second we have a good signal to noise ratio only amplified by "2". As a result,
the background noise is greater in the first case than in the second one.

8.4. Cleaning

The front panel should not be cleaned with dissolvent or abrasive substances because silk-printing could be
damaged. To clean it, use a soft cloth slightly wet with water and neutral liquid soap; dry it with a clean cloth. Be
careful that water never gets into the unit through the holes of the front panel.

18

9. FUNCTION LIST 10. FUNCTION DIAGRAM

1. Input sensitivity adjust, GAIN

2. Input selector

3. Signal present indicator, SP

4. Peak level indicator, PEAK

5. Treble frequency control, TREBLE

6. Midrange frequency control, MID

7. Bass frequency control, BASS

8. Bass frequency isolation switch

9. Prefader listening control, PFL

10. Effect send control, FX SEND

11. Send switch to effect bus

12. Send to XF switch, XFA/MIX/XFB

13. Fader

14. Crossfader

15. Fader reverse function

16. Crossfader Shape adjuster, SOFT HARD

17. Crossfader curve mode, SWITCH FADE

18. Crossfader reverse function

19. Crossfader "cut in time" adjustment, CUT IN

20. Crossfader Shape adjuster

21. Headphones stereo jack connector

22. Headphones volume control, VOL

23. PFL/MIX monitoring crossfade

24. Output 1 level control, MASTER 1

25. Output 2 level control, MASTER 2

26. Left and Right signal sum, L+R

27. Balance control, BAL

28. PFL and MIX vu-meter

29. MIDI rotary control

30. MIDI rotary control

31. MIDI rotary control

32. MIDI rotary control

33. MIDI button

34. MIDI button

35. MIDI button

36. MIDI button

37. LAYOUT Selector

38. A/B switch

39. Input 5, LEVEL control

40. Pre-fader listening control, PFL

41. High Line RCA inputs, H-LINE

42. Turntable phono RCA inputs, PHONO

43. Low Line RCA inputs, L-LINE

44. RCA inputs for computer, AUDIO IN

45. RCA inputs for computer, PFL

46. MIDI OUT

47. USB port

48. Micro input sensitivity switch

49. Microphone input, MICRO

50. Ground pin, GND

51. External effect SEND output, SEND

52. External effect RETURN input, RETURN

53. Recording RCA connector, REC

54. RCA output, OUT2

55. Left channel balanced output, OUT1 L

56. Right channel balanced output, OUT1 R

57. Mains OFF/ON Switcher, O/I

58. Mains socket

59. Fuse holder

19

Contenido del manual

1. NOTA IMPORTANTE 21

1.1. Instrucciones de seguridad 21

1.2. Descripción de la garantía 21

2. INTRODUCCIÓN 22

3. INSTALACIÓN 22

3.1. Conexiones de entrada de audio 23

3.2. Conexiones de salida de audio 24

4. INICIO RÁPIDO 25

5. OPERACIÓN Y USO 26

5.1. Puesta en funcionamiento 26

5.2. Descripción de los controles 26

6. CONTROLES MIDI 29

7. USO DEL CONTROL MIDI 32

8. OTRAS CONSIDERACIONES 35

9. LISTA DE FUNCIONES 36

10. DIAGRAMA DE FUNCIONES 36

11. CARACTERÍSTICAS TÉCNICAS 71

12. DIAGRAMAS 72

12.1. Figuras 72

12.1.1. Diagrama de conexiones 72

12.1.2. Sistema de montaje en rack 73

12.1.3. Configuración interna de los jumpers 74

13. DIAGRAMA DE BLOQUES 75

Todos los datos están sujetos a variación debida a tolerancias de producción. ECLER S.A. se reserva el derecho de realizar
cambios o mejoras en la fabricación o diseño que pudieran afectar las especificaciones.

20

1. NOTA IMPORTANTE

1.1. Instrucciones de seguridad

Para conseguir la máxima funcionalidad del aparato y su máximo rendimiento, es muy importante antes de su
conexión, leer detenidamente y tener muy presentes las consideraciones que en este manual se especifican. Para
garantizar el óptimo funcionamiento de este aparato, recomendamos que su mantenimiento y eventuales
reparaciones sean llevadas a cabo por nuestros Servicios Técnicos autorizados.

Este aparato debe conectarse a tierra a través de su cable de red.
No exponer la unidad a la lluvia o a salpicaduras de agua, no colocar recipientes que contengan líquidos
u objetos incandescentes tales como velas sobre el aparato. No obstruya las rejillas de ventilación.

Cualquier cambio en la configuración de la unidad debe ser llevado a cabo por técnicos cualificados. Cualquier
conexión o desconexión de la unidad debe ser realizada, siempre, con la unidad desconectada de la red.

1.2. Descripción de la garantía

Su equipo ECLER ha superado ensayos de laboratorio y exhaustivos controles de calidad antes de abandonar la
fábrica. No obstante podría darse el caso que necesite nuestro Servicio Técnico durante el periodo que cubre la
garantía o posteriormente. En tal caso, proteja cuidadosamente la unidad en su caja original y envíelo a nuestro
Servicio Técnico con los gastos y el seguro pagados. Adjunte una fotocopia del certificado de garantía y una
descripción detallada del defecto observado.

ECLER, S.A. garantiza sus productos ECLER ante defectos de materiales o fabricación durante el periodo de UN
AÑO (TRES AÑOS en el caso de mezcladores de las series SCLAT y NUO y en los amplificadores de tecnología
SPM y CINCO AÑOS para los potenciómetros ETERNAL) transcurridos tras la fecha de compra original.

ECLER, S.A. reparará el equipo defectuoso dentro del periodo especificado, sin cargo alguno para piezas y mano
de obra.

Para asegurar la validez de la garantía es preciso que la Garantía y la Tarjeta de Registro se rellenen
correctamente y se remitan a su distribuidor ECLER, en el plazo de 10 días después de la fecha de compra.

La garantía no es transferible y solamente protege al comprador original.

La garantía no cubre:

- Daños ocasionados por malos tratos o manejo negligente, falta de cuidados elementales, desatención de las
instrucciones del manual, conexión equivocada o accidentes.

- Aparatos que hayan sido manipulados, alterados o reparados fuera del Servicio Técnico autorizado.

- El mueble exterior, los componentes electromecánicos ni su desgaste por uso.

- Los gastos de envío y seguros, ni los daños que el aparato pueda sufrir durante el transporte.

ECLER, S.A., no será responsable por ningún daño directo o indirecto, pérdida o perjuicio originado por o en
relación con el equipo.

Esta garantía es válida sólo si las reparaciones o servicios se realizan en un Servicio Técnico autorizado.

21

2. INTRODUCCIÓN

¡Felicidades! Por adquirir un auténtico equipo profesional ECLER. El NUO4 ha sido diseñado cuidadosamente en
colaboración con prestigiosos artistas, DJs y productores, desarrollado con componentes de última generación y
fabricado en nuestra planta de Barcelona bajo estrictos controles de calidad.

El NUO4 es un mezclador estéreo de cinco canales con capacidad para 11 fuentes de sonido.

Debido a su formato y robustez, el NUO4 está principalmente concebido para aplicaciones de mezcla profesional
(club, estudio...) donde se requiere un mezclador de tamaño compacto pero excelentes prestaciones.

3. INSTALACIÓN

La principal consideración a tener en cuenta en el momento de buscar la ubicación de su nuevo NUO4 debe ser la
máxima comodidad de trabajo del operador, permitir una total facilidad en la realización de las conexiones de las
que el mezclador va a ser punto de partida y llegada. El NUO4 está básicamente concebido como mezclador de
sobremesa y su ubicación habitual será entre dos reproductores de discos compactos o de vinilo. El mezclador
tiene un formato de 14.57'' (37 cm) de profundidad y 12.6'' (32 cm) de anchura. Mediante el kit de laterales
metálicos (disponibles como opción) (Fig. 1) podrá sujetar firmemente su NUO4, ya sea directamente sobre la
superficie sobre la que se apoye o sobre los laterales, también le permitirán inclinar el mezclador. Existe otra
opción de perfiles metálicos "NUORAKI" que permiten la ubicación del mezclador en muebles rack estándar de
19".

Dada la elevada ganancia de las entradas de PHONO y de MICRÓFONO debe procurarse situar el mezclador lo
más alejado posible de fuentes de ruido (variadores de tensión, motores, etc.) así como de cualquier cable de red.
Por esta misma razón y bajo ninguna circunstancia debe quitarse la tapa metálica del aparato.

Ya que el consumo del NUO4 es muy bajo, éste no precisa ventilación, sin embargo debe evitarse que esté
expuesto a una temperatura extrema y que la atmósfera del local en que esté emplazado sea lo más seca y limpia
de polvo posible.

El NUO4 funciona con una fuente de alimentación conmutada de tipo universal permitiendo trabajar sin ningún tipo
de ajuste desde 90V a 264V – 47/63Hz. Asegúrese de que el cable de red se encuentre lejos de los cables de
señal para evitar zumbidos.

Para proteger al mezclador de eventuales sobrecargas en la línea de red existe un fusible de red de tipo T 500mA.
En caso de que éste se fundiera se desconectaría el aparato y se sustituiría por otro de idénticas características.
Si éste último se volviera a fundir, consulte con nuestro Servicio Técnico.

ATENCIÓN: EN NINGÚN CASO DEBE CORTOCIRCUITAR EL CIRCUITO DE PROTECCIÓN O
PONER UN FUSIBLE DE VALOR MÁS ELEVADO.

ADVERTENCIA: La sustitución del fusible debe ser realizada por un técnico cualificado.

22

3.1. Conexiones de entrada de audio

Input 1 H-LINE Reproductor CD
Input 1 PHONO Plato giradiscos
Input 1 L-LINE Ordenadores, Magnetófonos...

Input 2 H-LINE Reproductor CD
Input 2 PHONO Plato giradiscos

Input 3 H-LINE Reproductor CD
Input 3 PHONO Plato giradiscos

Input 4 PHONO Plato giradiscos
Input 4 H-LINE Reproductor CD
Input 4 MIC Micrófono

Input 5 (computer) AUDIO IN Tarjeta de sonido

PFL Preescucha

- Entradas de Phono:

Los platos giradiscos deben ir equipados con cápsula magnética con un nivel de salida nominal entre –55dBV y

-25dBV (1,77 a 56mV). Las entradas PHONO (42) del NUO4 tienen un amplio margen antes de la saturación

(headroom) y pueden admitir cápsulas con mayor nivel de salida de lo habitual. Estas entradas presentan una
sensibilidad de entrada nominal de –40dBV (10mV). El NUO4 dispone de dos bornes de masa
sobredimensionados para conectar el cable de tierra de los platos giradiscos.

- Entradas de Línea:

Dadas las importantes diferencias de nivel existentes entre las Fuentes del tipo CD y de LINE convencional, el
NUO4 incorpora entradas diferenciadas para cada uno de estos elementos. Así la sensibilidad de las entradas
marcadas como HIGH LINE (41) es 0dBV (1V) y la de LOW LINE (43) es -10dBV (316mV). Reproductores CD,
DAT, MP3, DVD Audio... se conectarán a las entradas HIGH LINE. Magnetófonos, cassettes, sintonizadores, y
algunos equipos de producción (samplers, secuenciadores) se conectarán a la entrada LOW LINE.

- Entradas de Micrófono:

La entrada de MICRO (49),está preparada para un nivel nominal de entrada de -50dBV (3.16mV). La conexión es
del tipo XLR3. A través del conmutador ubicado en el panel posterior (48), en posición MIC. ATT efectúa una
reducción de 20dB de la sensibilidad de esta entrada, pasaría pues de –50 a –30dB (3.16 a 31.6mV). Esta entrada
de micrófono admite la conexión en modo balanceado para ello se realizará la conexión tal y como se indica:

Vivo o señal directa > Terminal 2
Frío o señal invertida > Terminal 3
Masa > Terminal 1

Los micrófonos deben ser de baja impedancia (de 200 a 600Ω) y monofónicos. Para conexiones NO balanceadas
cortocircuitar a masa el terminal 3. El NUO4 dispone de alimentación phantom para micrófonos equipados de
condensador. Un jumper interno permite inhibir el funcionamiento de la alimentación phantom. La entrada MICRO
del NUO4 se sirve de fábrica con el jumper interno en posición "phantom ON". Ver diagrama de configuración.

- Entrada computer

AUDIO IN: La sensibilidad nominal de esta entrada es de -10dB, para una correcta adaptación al nivel de salida de
las tarjetas de sonido, permite un ajuste entre -∞ y 0dB de ganancia.

PFL: Tiene una sensibilidad nominal de 0dB. Esta entrada esta prevista para la preescucha de los programas de
mezcla de audio sobre ordenador. Debe conectarse a una segunda salida de la tarjeta de sonido.

23