Ecler WARM2 User manual

v.20211222
WARM2
DJ Mixer
Two-Channel Analogue Rotary Mixer
USER MANUAL

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INDEX
1. IMPORTANT REMARK.............................................................................................................4
2. IMPORTANT SAFETY INSTRUCTIONS ...............................................................................4
3. IMPORTANT NOTE...................................................................................................................6
4. WARM2 and ECLER HISTORY .............................................................................................. 6
5. INTRODUCTION ........................................................................................................................8
Key Features .......................................................................................................8
6. FUNCTION DIAGRAM..............................................................................................................9
7. INSTALLATION AND CONNECTION .................................................................................10
Audio Input Connections...................................................................................... 10
Phono Inputs ....................................................................................................11
Line Inputs........................................................................................................11
Microphone Input..............................................................................................11
Audio Output Connections ................................................................................... 11
HOUSE Output ................................................................................................. 12
BOOTH Output ................................................................................................. 12
Record output ...................................................................................................12
FX Send/Return effects loop .............................................................................12
Headphones......................................................................................................12
8. QUICK START ..........................................................................................................................13
9. OPERATION AND USAGE ....................................................................................................15
Start-up ............................................................................................................... 15
Control Description .............................................................................................. 15
Input selector....................................................................................................15
Channel TRIM ...................................................................................................15
Equalization ......................................................................................................15
Monitoring System ...........................................................................................16
Sending to external effects units FX Send/Return .............................................16
Potentiometers ................................................................................................. 16
HOUSE and BOOTH output levels.....................................................................16
10. FURTHER CONSIDERATIONS.............................................................................................17
Ground loops ....................................................................................................... 17
Background noise................................................................................................. 17
Audio connections................................................................................................ 18
Cleaning............................................................................................................... 18
11. CONFIGURATION DIAGRAM...............................................................................................19

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12. BLOCKS DIAGRAM.................................................................................................................20
13. TECHNICAL FEATURES ........................................................................................................21
14. ECLER SIGNATURE ................................................................................................................23

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1. IMPORTANT REMARK
The lightning 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 persons.
The exclamation point within an equilateral triangle is intended to alert the
user to the presence of important operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
WARNING (If applicable): The terminals marked with symbol of “ ”
may be of sufficient magnitude to constitute a risk of electric shock. The external
wiring connected to the terminals requires installation by an instructed person or the
use of ready-made leads or cords.
WARNING:To prevent fire or shock hazard, do not expose this equipment to rain or
moisture.
WARNING:An apparatus with Class I construction shall be connected to a mains
socket-outlet with a protective earthing connection.
2. IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves,
or other apparatus (including amplifiers) that produce heat.

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9. Do not defeat the safety purpose of the polarized or grounding type plug. A
polarized plug has two blades with one wider than the other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
prong are provided for your safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at the
plugs, convenience receptacles, and at the point where they exit from the
apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Unplug the apparatus during lightening sorts or when unused for long periods
of time.
13. Refer all servicing to qualified personnel. Servicing is required when the
apparatus has been damaged in any way, such as power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
14. Disconnecting from mains: Switching off the POWER switch all the functions
and light indicators of the amplifier will be stopped, but fully disconnecting the
device from mains is done unplugging the power cord from the mains input
socket. For this reason, it always shall remain readily operable.
15. Equipment is connected to a socket-outlet with earthing connection by means
of a power cord.
16. The marking information is located at the bottom of apparatus.
17. The apparatus shall not be exposed to dripping or splashing and that no
objects filled with liquids, such as vases, shall be placed on apparatus.
WARNING:This product must not be discarded, under any circumstance,
as unsorted urban waste. Take to the nearest electrical and electronic waste
treatment centre.
NEEC AUDIO BARCELONA, S.L. accepts no liability for any damage that may be
caused to people, animal or objects due to failure to comply with the warnings above.

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3. IMPORTANT NOTE
Thank you for choosing our WARM2 analogue rotary mixer!
It is VERY IMPORTANT to carefully read this manual and to fully understand its
contents before any connection in order to maximize your use and get the best
performance from this equipment.
To ensure optimal operation of this device, we strongly recommend that its
maintenance be carried out by our authorized Technical Services.
The Ecler WARM2 analogue rotary mixer come with a 3-year warranty.
4. WARM2 and ECLER HISTORY
Although the origins of the company date from 1965, ECLER presented its first mixer
back in the 70s: the A4, a simple 4 channel mixer oriented to Super 8 film sound
edition. The company grew in the 70s with the boom of disco and tourism.
It was the era of the AM 4 and AC 4, the first mixers tailored to DJ s. The AC 4 was a
high fidelity mixer designed to meet the most demanding sound requirements in
discos, theatres, cinemas, recording studios, conference rooms… The electronic
circuits and the extreme selection of all components and transistors used, made the
AC 4 a professional high quality mixer.
Milestones as SCLAT modular mixers, MAC Series High Standard Club mixers, AC-6
High-End Installation mixer (recognize as a legendary mixer by Hispasonic), the HAK
Series battle mixers Designed and manufactured with expert consultation from DMC
and ITF champions all over the world, or the award-winning Eternal contactless
magnetic crossfader are Ecler constant innovation examples.
Ecler DJ Division Pro Team selected artists with a diverse and deep music background
to share its inputs looking for the perfect mixing devices. From minimal to deep
house, from techno to hip hop, from breaks to electro… all of them share our passion
for music and technology. Dj’s like Michael Mayer, Pastaboys, Luciano, Antoine
Clamaran, Funk D’Void, Dj Hell, Ricardo Villalobos, Savas Pascalidis (to name a few).
When it comes to gear, they need the maximum quality, reliability and tools to
express their creativity.
Ecler mixers was installed in prestigious clubs worldwide, such as Pacha (Marrakech)
or Café del Mar (Ibiza).
After 13 years hiatus, Ecler release a new top notch mixer:
WARM2 Warehouse analogue rotary mixer!

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WARM2 was inspired by The Warehouse in Chicago, a place where many consider the
cradle of House Music back in 1977. This place ignited the spark that eventually
became the House Music scene we love and admire today.
Back in the days, Frankie Knuckles, the godfather of House Music and The Warehouse
first musical director, was reconstructing the soul and disco existing songs, by
changing the tempo and layering different bits of percussion over them. These
alterations transformed the dancefloor forever.
Rotary mixers have an special feel, creating a smoother and subtler transitions.
Legendary Djs like J oe Clausell, Louie Vega and more recently Floating Points or
Motorcity Drum Ensemble are top class users of these particular devices.
With WARM2, you’ll be able to get Ecler's design expertise at your fingertips, its
unquestionable audio quality, and the “ Alps Blue Velvet” potentiometers precision for
the perfect mix. The 4th order inbuilt isolator, will definitely expand your performance
possibilities by removing frequencies, infusing drama in an acapella track, enhancing
musical riffs or creating a tremolo effect by rapidly twisting the knobs.
With a width of 18.5 centimetres, WARM2 is the narrowest rotary mixer on the
market. Despite this, it includes interesting features such as: 3-band EQ + Trim, FX
Send control and Pre/Post fader selector, and an excellent dynamic and headroom
range. WARM2 provides the best analogue sound for your dancefloor in a portable
format.

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5. INTRODUCTION
WARM2 is a professional two channels analogue rotary DJ mixer, designed and
manufactured by ECLER in Barcelona. With over 50 years of experience in
professional analogue audio design and using the best components available on the
market, Ecler offers a new rotary mixer with a new best in class warm and crystal
clear analogue sound, its classic sharp filters, a 4th order isolator and its narrow
portable format. All circuits are strictly designed, mounted and tested at Ecler
facilities in Barcelona, in order to offer the best professional grade quality and
reliability.
Key Features
•2+1 Mixing channels
•1 MICRO input
•2 PHONO inputs
•3 LINE inputs
•Master Output (HOUSE) on XLR and RCA connectors
•Booth Output on RCA connectors
•6.3mm J ack and 3.5mm mini-jack Headphone Monitor Outputs
•3 band full cut EQ for main channels and 2 band full cut EQ for
MICRO/LINE channel
•3 bands isolator (300Hz and 4KHz, -∞ /+12dB, 4th order 24dB/oct )
•Maximum Output without distortion: 21dBV (23dBu)
•Mechanized from a solid block of aluminum knob, without visible screw.
Ecler Unique design
•Alps Blue Velvet Potentiometers
•FX Send control and Pre/Post fader selector
•Screen-printed faceplate by selective anodizing
•Wooden side panels included

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6. FUNCTION DIAGRAM
1. LED indicator ON
2. Input Selector (PHONO, LINE MIC)
3. Input sensitivity adjust, TRIM
4. Treble control, HIGH
5. Midrange control, MID
6. Bass control, BASS
7. Pre-Fader listening control, PFL
8. Send switch to effect bus, PRE/POST
9. Effect Send controller, FX SEND
10. Channel volume control
11. LED VU Meter
12. Isolator control
13. Channel 3 volume control
14. Master volume control, HOUSE
15. Monitoring volume control, BOOTH
16. Stereo J ack Headphones
17. Monitor Headphones Volume control
18. PFL/MIX monitoring control, SOURCE
19. RCA Monitoring Unbalanced Output, BOOTH
20. XLR Master Balanced Output, HOUSE
21. RCA Master Unbalanced Output, HOUSE
22. External FX return Input, FX RETURN
23. External FX send Output, FX SEND
24. Recording Output, REC
25. Line Input, LINE 2
26. Phono Input, PHONO 2
27. Line Input, LINE 3
28. Phono Ground Pin
29. Microphone Input, MICRO
30. Line Input, LINE 1
31. Phono Input, PHONO 1
32. Mains Socket
33. Power Switch

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7. INSTALLATION AND CONNECTION
Warm2 is conceived as a portable desktop mixer with a small form factor and
optimized to be placed between two turntables or two digital players.
We recommend to place it in a comfortable position for the end user, without placing
it in direct contact with the turntables to avoid transmitting shocks and vibrations to
the styluses during use.
Because of the high gain of the PHONO and MICRO inputs, always try to place the
mixer as far away as possible from noise sources (dimmers, engines, etc.) and mains
wires.
The WARM2 operates with a universal input power supply and can perfectly works
without any internal modification from 90V to 264V –47 to 63Hz. Ensure 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 0.5A
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.
Audio Input Connections
INPUT 1 PHONO Turntable
INPUT 1 LINE CD or Digital Deck
INPUT 2 PHONO Turntable
INPUT 2 LINE CD or Digital Deck
INPUT 3 MICRO Microphone
INPUT 3 LINE CD or Digital Deck

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Phono Inputs
Phono Turntables must be fitted with a magnetic cartridge with nominal output level
between -55dBV and -25dBV (1.77 to 56mVrms). The WARM2 PHONO inputs (26
and 31) have high headroom (margin before saturation) and they can handle higher
output cartridges than what is usual. These inputs are supplied with a nominal input
sensitivity of -40dBV (10mVrms). Act on TRIM control in order to adjust the input
sensitivity depending by the cartridges in use.
Line Inputs
The sensitivity of the inputs marked as LINE (27-27-30) is 0dBV (1Vrms). You can
connect sound sources such as CD or digital players, as well as keyboards and other
instruments.
Microphone Input
The MIC input (29) is ready for a nominal input level of -50dBV (3.16 mVrms). The
connection of balanced signals is as follows:
Hot or direct signal > Tip
Cold or inverted signal > Ring
Ground > Sleeve
Low impedance (200 to 600) monophonic microphones must be used. For non
balanced microphones we recommend monophonic jack plugs although stereo ones
are also suitable if the ring is short-circuited to the sleeve. The WARM2 includes 18V
Phantom power for condenser microphones. An internal jumper allows disabling the
phantom power. The WARM2 MICRO input is delivered with enabled phantom power
by default (see the configuration diagram).
Audio Output Connections
HOUSE Main power amplifier
BOOTH Booth/Room2 power amplifier
REC Recording
FX Send/Return External effect devices (Input and Output)
Monitor Headphones

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HOUSE Output
This stereo output feeds the PA system through balanced XLR3 connectors (20) and
an unbalanced RCA connector (21). The nominal level of HOUSE output is set to 0dBV
(1Vrms) by default, but it can be set to +12dBV (4Vrms) using an internal dip-switch
(look at Configuration Diagram). The HOUSE output level is controlled by the HOUSE
potentiometer (14).
BOOTH Output
Commonly used as an independent local "Booth" output for the DJ . This stereo
BOOTH (19) has unbalanced RCA connections and its level is set at 0dBV (1Vrms) but
can be changed to +12dBV (4Vrms) through internal dip-switch (look at Configuration
Diagram). The BOOTH level is controlled by the BOOTH (15) potentiometer.
Record output
This output pair uses RCA type connectors. REC (24) is placed on the rear connection
panel. The nominal level of the REC output is 0dBV (1Vrms). This output is taken
post-fader, before the MASTER signal.
FX Send/Return effects loop
The RCA connectors on the FX SEND output (23) and the FX RETURN input (22) allow
creating a signal loop for external effects processors, samplers or sequencers. The
nominal level for the SEND output, as well as for the RETURN input, is 0dBV (1Vrms).
The signal sent to the FX SEND output can be taken before or behind the fader using
the PRE/POST switch (8) and the send level can be set using the related
potentiometer (9).
Headphones
In order to obtain the best performances, Headphones should be high impedance type
(200-600). Plug them in the MONITOR output (16) on the front panel: 1/4" and 1/8”
stereo jack are available for connection. Sleeve is Ground, Ring is Right Channel and
Tip is Left Channel.

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8. QUICK START
Install and connect the WARM2 mixer as described
in the previous chapter.
This “ Quick Start” guide explains a simple
procedure to route and headphone monitoring a
turntable.
1. Set the controllers to their initial position
Set Channel 1 TRIM, HIGH, MID and BASS
(3, 4, 5 and 6) rotary controls to their central
position. Set the channel potentiometer (10)
to zero rotating it counter clockwise.
2. Connect your turntable
Connect your turntable to the PHONO input
on channel 1 (31), choose your favourite
record and start to play it.
3. Connect the headphones
Connect your headphones to the related
output (16). Set the headphones VOLUME
controller (17) to minimum level and move
the SOURCE selector (18) to PFL position.
4. Connect the main power cable
Connect the power cable to the power
supply input (32) and turn it on using the
MAINS INPUT switch (33). Both elements
are located on the mixer backside.
5. Select the input source
Make sure that the channel 1 input switch
(2) is placed in PHONO position and press
the PFL button (7). The PFL VU-meter (11)
should start to work. If this doesn’t happen,
verify that the turntable is correctly
connected and that the record is playing.
6. Adjust the input level

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Move the TRIM (3) control until the VU-meter shows 0dB.
7. Send the signal to the HOUSE
Rotate the channel 1 potentiometer (10) clockwise at its maximum.
8. Monitor the output with your headphones
Adjust the VOLUME controller (17) to obtain a comfortable monitoring volume.
Now you should hear music with your headphones. Turn the SOURCE
controller (18) clockwise to crossfade from the PFL signal to the MIX signal.
When this controller is completely turned to the right, only the MIX signal will
be monitored. In this case the PFL and the MIX signal are both referred to
channel 1 so you will listen the same signal in both positions.
9. Check the EQ operation
Adjust the EQ of the track with the 3-way stereo equaliser (4, 5, 6) and unleash
your creativity with the powerful 3-way isolator (12). This 4th order tone control
has been designed for a creative sound edition: each way can be individually
isolated and boosted using the big and ergonomic rotary controllers.

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9. OPERATION AND USAGE
Start-up
Switch on the mixer using the switch (33) located in the mixer back panel. Now the
LED ON (1) indicator will be lit in green. Even if the typical bump noise of audio
devices during the start-up is minimized in the WARM2 thanks to the internal anti-
bump circuits, it is always recommendable to turn on the devices using the following
sequence:
1. Sound sources
2. Mixer, sound processors, effects
3. Finally, power amplifiers
The shut-down routine should be done by following the exact reverse sequence in
order to avoid any possible damage to the loudspeakers.
Control Description
Input selector
Each channel provides an input toggle switch selector (1) that allows selecting the
PHONO or LINE inputs for the main channels and MIC or LINE inputs for the third
channel.
Channel TRIM
All the WARM2 input channels have an accessible TRIM input sensitivity control (3).
These controls adjust the input level of each channel in order to compensate the level
of different sources connected to the mixer, or different phono cartridges in case of
turntables.
The gain adjustments should be done with great care, using as a reference the PFL
VU-meter (11). The standard level reference used to mix audio signals is 0dBV.
Equalization
The rotary tone controls for each channel provide a +10/-30dB boost/cut at high (4)
and low frequencies (6) and +10/-25dB at the mid range (5). This control allows
equalizing the track in use or it can be used in all the creative ways possible. In

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addition to the channel EQ, a powerful 3-way Isolator (12) is available on the main
output. It provides a +12/-70dB boost/cut at high and low frequencies and +12/-40
dB at the mid range. This great attenuation range is specially designed for creative live
performance.
ATTENTION: Use equalization carefully; by boosting too much the low frequency
range, you can induce an excessive displacement of the loudspeakers membrane.
Monitoring System
WARM2 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 monitored
visually and pre-listened pressing the dedicated PFL (7) button.
For HEADPHONES monitoring, the SOURCE rotary potentiometer (18) allows you to
blend a selected PFL together with the main MIX Program. The VOLUME rotary
potentiometer (17) controls the level of headphones output.
Sending to external effects units FX Send/Return
The 2 main channels of WARM2 are equipped with rotating potentiometers (9) that
allow sending the signal to an external effects unit, sampler, etc. These
potentiometers allow to precisely adjusting the signal level sent from each channel.
The FX SEND output (23) has to be connected to the effects processor’s input and its
output to the RETURN input (28) or any LINE input (35).
This signal send can be configured either PRE or POST fader with the PRE/POST
toggle switch (10).
Potentiometers
The WARM2 is equipped with original J apanese ALPS blue velvet potentiometers that
offer extremely soft and smooth transitions both for channels and isolator controls.
HOUSE and BOOTH output levels
WARM2 features two main output level controls: HOUSE and BOOTH. The master
level is controlled by the HOUSE (14) level knob. The BOOTH level is controlled by the
BOOTH (15) level knob.
IMPORTANT: With the default output settings of 0dBV (look at Configuration
Diagram) and when the HOUSE (14) or BOOTH (15) potentiometers are at their
maximum position, the output signal levels of HOUSE (20-21) and BOOTH (19) will

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faithfully follow the MIX VU-meter (11) indications, in order to have a real perception
of the signal output.
As the MIX VU-Meter is monitoring the MIX bus and not the outputs, when the
internal extra-gain of 12dBV is set on the outputs (look at Configuration Diagram) and
when the HOUSE or BOOTH potentiometers are at their maximum position, the VU-
Meter indications will be displaced of +12dBV: 0dBV corresponds to +12dBV.
HOUSE output (20) is electronically balanced so the unbalanced level (21) always
matches with the balanced level (20).
WARM2 has extended headroom: its maximum output without distortion can reach
21dBV (23dBu)!
Take care of the devices connected to the mixer outputs checking the VU-meters and
please try to stay away from the red light zone!
10. FURTHER CONSIDERATIONS
Ground loops
Avoid that the sources connected to the mixer and the devices connected to its
output have their ground reference interconnected; it means that the ground
reference should never have two or more different paths, because hums and noise
can appear influencing the sound quality. In order to avoid ground loops, ensure that
the shielding of cables, if connected to the chassis, are never connected with each
other.
Background noise
The use of active circuitry can yield, depending on the configuration, to a significant
noise level. The WARM2 have been specifically designed with a very reduced noise
figure. Anyway, the noise level will always depend by the correct use and installation
of the mixer and by the correct gain chain. It is not the same setting up the channel
potentiometer at "2" and the HOUSE level at "10" that vice versa. In the first case you
get a poor signal to noise ratio that will be fully amplified by the master output 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.

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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.
Cleaning
The control panel should never be cleaned with solvent or abrasive substances as it
could become damaged. To clean it, use a slightly moist soft cloth, together with a
neutral liquid detergent, and then dry it with a clean cloth. We suggested removing all
sweat stains after use. Be careful to ensure that liquids never enter in the machine
through any of the openings.

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11. CONFIGURATION DIAGRAM

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12. BLOCKS DIAGRAM