MAC70v
USER MANUAL
MANUAL DE INSTRUCCIONES
NOTICE D’EMPLOI
BEDIENUNGSANLEITUNG
MAC70v
3
INSTRUCTIONS MANUAL MAC70v
1. IMPORTANT REMARK 04
1.1. Safety Precautions 04
2. INTRODUCTION 04
3. INSTALLATION 05
3.1. Placement and mounting 05
3.2. Connectable Signal Sources 05
4. OPERATION AND USAGE 06
4.1. Start up 06
4.2. Monitoring 06
4.3. Channel gain and equalization 06
4.4. Using the CROSSFADER 07
4.5. Talkover 07
4.6. Outputs 07
5. CONSIDERATIONS 08
5.1. Ground loops, background noise 08
5.2. Cleaning 08
6. TECHNICAL CHARACTERISTICS 32
7. DIAGRAMS 33
7.1. Configuration diagram 33
7.2. Function list 34
7.3. Function diagram 36
7.4. Block diagram 37
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.
4
1. IMPORTANT REMARK
We thank you for trusting on us and choosing our MAC70v mixer. In order to get the
most in operation and efficiency from your mixing unit, it is VERY IMPORTANT for you - before
you plug anything - to read this manual very carefully and take seriously into account all
considerations specified within it.
In order to guarantee the optimum operation of this unit, we strongly recommend that
its maintenance be carried out by our Authorised Technical Services.
1.1. Safety Precautions
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.
There are no user serviceable parts inside the unit.
2. INTRODUCTION
The MAC70v mixer is designed for its use in discotheques, ballrooms, bars, disco bars
and external P.A. applications.
The MAC70v has 6+1 mixable channels, i.e. 6 channels with conventional sliding fader
plus one special channel for the effect return with rotary potentiometer, which can be used to
input normal line-level signals from any source. It features 10 stereo inputs: 3 PHONO, 4 HIGH
LINE (high line level for compact disc, DAT, MP3 players), and 3 LOW LINE, AUX IN and MIX;
plus 2 more inputs for balanced microphones (XLR 3).
All channels have a lever switch input selector, independent gain control and 3-band
tone controls. The MAC70v also has a removable, externally exchangeable CROSSFADER that
can be assigned to the channels.
All inputs are PFL-capable in order to visually (through the VU meters) and
acoustically (through headphones) monitor any signal connected to the inputs of the unit.
In the MAC70v, we have cared specially about the roughness, long-time response and
maximum adaptability to the DJ needs, getting a total ease of operation.
5
3. INSTALLATION
3.1. Placement and mounting
The first thing to take into account when looking for the placement of the MAC70v is
your comfort and an easy access to all the connections.
The MAC70v has 19" (482.6 mm), 7U (310.5 mm) rack mounting ears that allow
you to place it in a standard rack.
Because of the high gain of the PHONO and MIC inputs, the mixer must be placed as
far as possible from noise sources (dimmers, engines, etc.) as well as from any mains cable.
You should never, under any circumstance, remove the metallic cover of the mixer.
The MAC70v, being a low consumption unit, does not need any cooling; you should
anyway avoid exposure to extreme temperatures and the operating environment must be as dry
and dust free as possible.
The MAC70v operates under voltages between 90 and 264 V at 47 to 63 Hz. All
models of the MAC v-series feature an over dimensioned power supply that adapts to the
mains voltage in any country of the world with no need to make any adjustments.
In order to protect the mixer from eventual mains overloads, it has a time-lag 0,5 A
(50) mains protection fuse. Should this fuse ever blow off, disconnect the mixer from mains
and replace it with an identical one. NEVER REPLACE THE FUSE WITH ANOTHER ONE WITH A
HIGHER VALUE.
ATTENTION: Changing the fuse must be performed by qualified technical personnel.
3.2. Connectable Signal Sources
- Turntables / Phono: They must be fitted with a magnetic cartridge with nominal
output level between -60dBV and -20dBV (1 to 100 mV). The PHONO (39) inputs of the
MAC70v 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).
- Microphones: The MIC inputs (36) are ready for a nominal input level of -50dBV
(3.16 mV) and are equipped with XLR 3 connectors. These inputs provide, through the input
selector (1) at ATT position, an input sensitivity reduction of 20dB; this is, from -50 to -30dBV
(3.16 to 31.6mV). 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 600:) monophonic microphones must be used. In case of
working with an unbalanced connection Pin 1 and Pin 3 must be short-circuited.
The MAC70v features a Phantom power supply for the connection of condenser
microphones. A switch for general activation of the phantom power can be found on the front
panel of the unit (12). However, a set of internal jumpers allow you to inhibit the phantom
power for individual microphone inputs. The default setting of these jumpers on the MAC70v is
"Phantom ON". See configuration diagram.
6
-LINE Inputs. Given the important level differences between usual LINE and CD
sources (e.g. Tape decks), the MAC70v provides specialized inputs for each source. The
sensitivity of the HIGH LINE input (38) is 0dBV (1V), while the LOW LINE (37) sensitivity is
-10dBV(316mV).
Compact disc, DAT, MP3, DVD Audio... should be connected to the HIGH LINE input.
Tape recorders, cassettes, tuners, videos... should be connected to the LOW LINE input.
- Headphones: In order to achieve the best performance, they should be high
impedance type (200-600
:
). They must be connected to the HEADPHONES OUT (26)
connector, a standard ¼" stereo jack. Connect ground to sleeve, ring to right and tip to left.
- Other mixers: The MIX (41) input provides a direct access to the main mix bus, so
this is a perfect input for another mixer to be plugged in without using up a regular input.
- Power amplifiers: See paragraph 4.6.
4. OPERATION AND USAGE
4.1. Start up
Power up the mixer by pushing the POWER (13) switch. The green pilot-light,
integrated into the switch itself, will immediately light up. Although the noise generated by
powering up the MAC70v is reduced to a bare minimum and is nearly null with the MASTER
(21, 28) faders down, it is always advisable not to forget about this power-up sequence: sound
sources, mixer, equalizers, active filters and power amplifiers. Power down the equipment by
following the inverse sequence. This way the peaks or transients produced by powering
up / down a device do not affect the following one in the audio chain and, as a result, they do
not reach the loudspeakers, which are the most vulnerable audio elements in this case.
4.2. Monitoring
The MAC70v is equipped with an acoustical and visual monitoring system, through
headphones, CUE output and VU METER. When switching ON any of the PFL buttons, signal(s)
present at the input(s) will be seen at the VU METER. If no switch is at the ON position, the
signal present at the main mix bus is heard (open faders). By pushing the OUT1/OUT2 buttons,
the right VU-Meter displays the signal present at the output 1 or output 2. If no switch is at the
ON position, the signal present at the main mix bus is shown (open faders)
It is also possible to monitor through the CUE (42) output. This output carries the very
same signal as the headphones output does. Its nominal output level is 0dBV (1V) and it is
controlled by the rotary knob CUE VOL (29).
4.3. Channel gain and equalization
These controls allow individual input sensitivity and tone adjustments for each
channel.
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Thanks to the GAIN (2) control, you can precisely adjust the signal level of an
incoming musical signal to match the level of the music that is playing on air through another
channel. This operation may be performed visually (through the left VU-meter) and acoustically
(through the headphones), successively comparing both signals with the PFL buttons. The Gain
knobs offer an adjustment range of ±20dB.
The tone controls (3-4-5) of channels 1, 2, 3 and AUX have a range of -20 to
+10dB, while channels 4, 5 and 6 range from CUT to +10dB.
4.4. Using the CROSSFADER
The MAC70v provides a short travel sliding potentiometer placed horizontally. This
potentiometer is called CROSSFADER (32) and enables a direct mixing of the signals present at
the inputs. The odd channels 1, 3 and 5 feature a XFA switch with activation indicator, that
assigns this channel to side A of the crossfader. If these switches are not activated, the signal
bypasses the crossfader circuit and passes directly to the main mix bus. An analogue XFB
switch at the even channels 2, 4 and 6 assign these signals to side B of the crossfader or direct
them to the main mix bus.
The MAC70v's CROSSFADER is based around an electronic VCA circuit that greatly
extends its life and additionally has the great advantage of being removable and replaceable by
yourself. To do so, just follow these instructions:
1- Remove the screws of the plate that hold the CROSSFADER.
2- Remove the set from the mixer.
3- Detach the multipin connector.
4- Replace the whole set or remove the screws that tie the potentiometer.
5- Tie the new potentiometer and the associated printed circuit and multipin connector
to the plate.
6- Attach the multipin connector.
7- Place the set on the mixer.
8- Fix the screws of the plate.
4.5. Talkover
This device automatically reduces the signal level just at the first voice "hit" of the DJ
or speaker on the microphone plugged to the channel which is assigned to the Talkover. When
the DJ stops talking the music level comes up to the initial level. The talkover is enabled
through the ON (31) switch, and has efficiency, EFF (34), main signal level attenuation
(between 0 and 30 dB) and recovery time, TIME (33), the time necessary for a progressive
come back to the original level (between 0,1 and 3 sec).
The channel(s) assignable to Talkover are internally selectable, see configuration
diagram. The MAC70v talkover is factory preset at channel 1.
4.6. Outputs
The MAC70v mixer has two independent outputs, OUT1 and OUT2. Each one has its
own volume control, with a sliding fader for OUT1 (28), and a rotary one for the OUT2 (21).
Both outputs have a dedicated balance control BAL (25-20).
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You must be careful when setting up the general output level of the mixer. The "clip"
display of the connected power amplifiers must never remain permanently lit, but do it only
occasionally by following the rhythm of the bass signals that are being played.
The MAC70v mixing unit is factory adjusted at 0dBV/1V, although this output can be
internally modified to +6dBV/2V. See configuration diagram.
The OUT1 output (45-46) is balanced or symmetrical, and the pin-out of the
connector is as follows:
Hot or direct signal > Pin 2
Cold or inverted signal > Pin 3
Ground > Pin 1
The balanced circuit simulates an output transformer, so if you wish to use OUT1 in
non-balanced mode, you should short circuit the unused pin to ground. Otherwise, the signal
will not have an appropriate level and quality.
The OUT2 output (47) is non-balanced or asymmetrical.
The MAC70v has two recording outputs: REC1 (44), which is pre-talkover (no signals
which activate the talkover are passed to this output, so no attenuation occurs) and REC2 (43),
which is influenced by the talkover.
Finally, a MONO (24) switch that converts an stereo signal into a monophonic one or
sends one side to both channels. This switch affects the outputs OUT1, OUT2, and REC2.
5. CONSIDERATIONS
5.1. Ground loops, background noise
You should always make sure that the signal sources coming to the unit, as well as all
devices connected to its outputs, do not have their grounds interconnected, that is; ground must
never come from two different devices. Should this ever happen, noises could occur and seriously
interfere the sound quality.
Cable shielding, when connected to the chassis, must never be interconnected, so as to
avoid ground loops.
The MAC70v mixer has been designed for the lowest possible background noise.
Independently from the electronic design itself, background noise level will directly depend on the
right installation and use of the mixing unit.
I. e.: setting a channel VOL to "2" and the output to "10" is not the same as the other
way round. In the first case, the signal coming to the mixing amplifier - which has got its own
noise - is low, and so is the signal-to-noise ratio (low signal). When the output amplifier boosts the
whole signal we will get a very high background noise. In the second case - with the channel
fader at maximum - the mixing level is high, and so is the signal-to-noise ratio. When the signal
reaches the VOL OUTPUT and is boosted, it will keep a much better signal-to-noise ratio than in
the preceding case.
5.2. 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 amplifier through
the holes of the front panel.
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MANUAL DE INSTRUCCIONES MAC70v
1. NOTA IMPORTANTE 10
1.1. Precauciones 10
2. INTRODUCCIÓN 10
3. INSTALACIÓN 11
3.1. Ubicación y montaje 11
3.2. Fuentes de señal conectables 11
4. OPERACIÓN Y USO 12
4.1. Puesta en funcionamiento 12
4.2. Monitoraje 13
4.3. Ganancia y ecualización de vía 13
4.4. Utilización del CROSSFADER 13
4.5. Talkover 14
4.6. Salidas 14
5. CONSIDERACIONES 15
5.1. Bucles de masa, ruido de fondo 15
5.2. Limpieza 15
6. CARACTERÍSTICAS TÉCNICAS 32
7. DIAGRAMAS 33
7.1. Diagrama de configuración 33
7.2. Lista de funciones 34
7.3. Diagrama de funciones 36
7.4. Diagrama de bloques 37
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.
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1. NOTA IMPORTANTE
Agradecemos su confianza por haber elegido nuestro mezclador MAC70v. Para
conseguir la máxima operatividad y rendimiento de su mesa de mezclas 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 sea llevado a cabo por nuestros Servicios Técnicos autorizados.
1.1. Precauciones
Este aparato debe ser conectado a tierra mediante su cable de alimentación.
No exponga el aparato a la caída de agua o salpicaduras, no ponga encima objetos con
líquido ni fuentes de llama desnuda, como velas. No obstruya los orificios de ventilación
con ningún tipo de material.
Cualquier cambio en la configuración debe ser realizado por personal técnico cualificado.
En caso de requerir alguna intervención y/o conexión desconexión del aparato debe desconectarse
previamente de la alimentación.
En el interior del aparato no existen elementos manipulables por el usuario.
2. INTRODUCCIÓN
El mezclador MAC70v está concebido para el uso en discotecas, salas de fiesta, pubs,
disco bares y aplicaciones de sonorización.
El MAC70v dispone de 6+1 vías mezclables, 6 canales con fader deslizante
convencional y una vía especial para retorno de efectos con fader rotativo a la que también puede
conectársele cualquier señal que entregue nivel de línea. Dispone de 10 entradas estereofónicas: 3
de PHONO, 4 HIGH LINE (Línea de alto nivel para compact disc, DAT, reproductores de MP3), 3
de LOW LINE, AUX IN y MIX; y finalmente 2 entradas preparadas para micrófonos balanceados
(XLR 3).
Todos los canales disponen de un selector de entradas de palanca, control de ganancia
independiente para cada una de las vías así como controles de tono de tres bandas. El MAC70v
incorpora un potenciómetro CROSSFADER reemplazable exteriormente y asignable desde las vías.
Todas las entradas disponen de la función PFL para monitorizar visualmente mediante el
Vu-Meter y acústicamente mediante auriculares cualquier señal conectada a las entradas de la
mesa.
En el MAC70v se ha cuidado por encima de todo la fiabilidad, dureza al paso del tiempo
y la máxima adaptabilidad a las necesidades del Disc-jockey, consiguiendo de esta forma una total
comodidad de operación.
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3. INSTALACIÓN
3.1. Ubicación y montaje
La principal consideración a tener en cuenta en el momento de buscar la ubicación del
mezclador MAC70v debe ser la máxima comodidad de trabajo del operador, permitir una total
facilidad en la realización de las conexiones que el mezclador va a ser punto de partida y llegada.
El MAC70v equipa unos perfiles laterales que permiten, dado su tamaño standard de
19" (482.6mm) y 7 unidades rack de altura (310.5mm), enrracarlo.
.
Dada la elevada ganancia de las entradas de PHONO y de MICRO 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 MAC70v 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 MAC70v funciona con corriente alterna de 90 a 264V y 47 a 63 Hz. Todos los
modelos MAC serie v equipan una fuente de alimentación sobredimensionada capaz de
adaptarse sin ningún tipo de ajuste a la tensión de red de cualquier país del mundo.
Para proteger a la mesa de mezclas de eventuales sobrecargas, el MAC70v está
protegido con un fusible de red (50) de 0.5A temporizado. En el caso de que éste se fundiera se
sustituiría por otro de idénticas características. EN NINGÚN CASO DEBE PONERSE UN FUSIBLE
DE VALOR MÁS ELEVADO.
PRECAUCIÓN: El cambio de fusibles debe ser realizado por personal técnico
cualificado.
3.2. Fuentes de señal conectables
- Platos giradiscos: Deben ir equipados con cápsula magnética capaz de dar un nivel de
salida nominal entre -60 y -20dBV (1 y 100mV). Dado que las entradas de PHONO (39) del
MAC70v tienen una elevada capacidad de sobrecarga, puede admitir cápsulas de mayor nivel de
salida. Estas entradas tienen una sensibilidad nominal de -40dBV(10mV).
- Micrófonos: Las entradas de Micro (36) están preparadas para un nivel nominal de
entrada de -50dBV (3.16mV). Son del tipo XLR 3. Permiten a través del selector de entradas (1)
en posición ATT una reducción de 20dB de la sensibilidad de esta entrada, pasaría pues de -50 a
-30dBV(3.16 a 31.6 mV).
Estas entradas de micrófono admiten la conexión en modo balanceado para ello se
realizará la conexión del conector XLR 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 600
:
) y monofónicos. Para
conexiones NO balanceadas cortocircuitar a masa el terminal 3.
12
El MAC70v dispone de alimentación phantom para micrófonos equipados de
condensador. El conmutador de activación general de la alimentación phantom se encuentra
ubicado en el panel frontal del aparato (12). Un jumper interno permite además inhibir el
funcionamiento de la alimentación phantom de forma individual para cada micro. Las entradas
MIC del MAC70v se sirven de fábrica con el jumper interno en posición “phantom ON”. Ver
diagrama de configuración
- Entradas LINE. Dadas las importantes diferencias de nivel existentes entre las fuentes
del tipo CD y de LINE convencional (por ejemplo magnetófonos a cassette), el MAC70v incorpora
entradas diferenciadas para cada uno de estos elementos. Así la sensibilidad de las entradas
marcadas como HIGH LINE (38) es 0dBV (1V) y las de LOW LINE (37) es -10dBV (316mV).
Reproductores CD, DAT, MP3, DVD Audio... se conectarán a las entradas HIGH LINE.
Magnetófonos, cassettes, sintonizadores, videos... se conectarán a las entradas LOW LINE.
- Auriculares: Para obtener el mejor rendimiento en su funcionamiento, éstos deberán ser
de alta impedancia (200-600
:
). Se conectarán a la salida HEADPHONES OUT (26) situada en su
propia placa de mandos mediante un conector jack normalizado de 1/4" estereofónico. El casquillo
del jack será la masa, el anillo central el canal derecho y la punta el canal izquierdo.
- Otras mesas de mezcla. La entrada MIX (41) ofrece un acceso directo al bus de
mezcla principal por lo que es una entrada perfecta para interconectar con otra mesa de
mezclas sin necesidad de utilizar una entrada normal.
- Amplificadores de potencia: Ver apartado 4.6.
4. OPERACIÓN Y USO
4.1. Puesta en funcionamiento
Esta se realizará mediante el interruptor de red POWER (13) e inmediatamente se
iluminará el piloto verde integrado en el propio interruptor. Aunque el ruido producido por la puesta
en funcionamiento del MAC70v es mínimo y queda prácticamente anulado al hacerlo con los
controles de MASTER (21 y 28) cerrados, siempre resulta muy recomendable poner en marcha
todos los aparatos siguiendo la secuencia siguiente: Fuentes de sonido, unidad de mezclas,
ecualizadores, filtros activos y finalmente amplificadores de potencia. El paro de los aparatos debe
realizarse en la secuencia inversa. Siguiendo este orden los picos o transitorios producidos por el
encendido o apagado de los aparatos no afecta a los siguientes, y por consiguiente tampoco
llegan a los altavoces, elementos extremadamente susceptibles de averiarse en estos casos.
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