USER MANUAL
MANUAL DE INSTRUCCIONES
NOTICE D’EMPLOI
BEDIENUNGSANLEITUNG
SAM614
3
INSTRUCTION MANUAL SAM614
1. IMPORTANT REMARK 04
1.1. Safety Precautions 04
2. INTRODUCTION 04
3. INSTALLATION 05
4. INPUTS 05
4.1. Phantom power supply 06
4.2 Talkover 06
5. OUTPUTS 06
5.1. Out A / B 06
5.2. "REC" Recording outputs 07
5.3. PHONES Output 07
6. CONSIDERATIONS 07
6.1. Starting Up 07
6.2. Input sensibility 07
6.3. Channel indicators 08
6.4. Equalizatión 08
6.5. Level indicators 08
6.6. Audio monitoring 08
6.7. Ground loops, background noise 08
6.8. Cleaning 09
7. TECHNICAL CHARACTERISTICS 32
8. DIAGRAMS 33
8.1. Configuration diagram 33
8.2. Function list 34
8.3. Function diagram 36
8.4. 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 SAM614 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.
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
Easy operation, 1-unit rack-height professional mixer, designed for P.A. and professional
outdoors sound applications. These are its main features:
- Six channels: 2 inputs for balanced microphones, 2 inputs for line signals and 2 switchable,
combined balanced microphone / line inputs.
- Phantom power supply at all microphone inputs
- Two balanced stereo output buses where each channel may be assigned to one or both buses
using A / B switches on the front panel.
- Accurate input gain adjustment (accessible with screwdriver) and channel volume
- LED indicators for each channel: Input signal presence and clipping.
- 3-Band tone controls (accessible with screwdriver) for each output bus.
- Mix level indicators for each output bus (-10, 0 and +6dB)
- Headphones monitoring selector with volume control
- 2 recording outputs
- Mono / Stereo selector for output A
- Built-in talkover
5
3. INSTALLATION
This unit has been specially designed to be placed in a standard 19" rack, taking up 1 height
unit. The SAM614 is very well suited to be operated by people with a low technical knowledge. This is
why its input sensitivity and tone controls are not easily accessible. Both adjustments should be
performed from the front panel with a small screwdriver
Two considerations must be taken into account when you look for the right location where to
put your SAM614: first, maximum user comfort and second, easy access to the back panel in order to
plug several different devices to and from the mixer.
Your SAM614 has a very low power consumption, so it does not need any fan cooling, but
you should avoid exposing the unit to very extreme temperatures and the atmosphere of the room
where it is located should be as dry and dust-free as possible.
Also, you should place the SAM614 away from noise sources (dimmers, motors, etc...), as
well as from the power cables.
The SAM614 operates under voltages between 90 and 264 V at 47 to 63 Hz. This device
features 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 overloads, the SAM614 is protected by a timered
power fuse (31) of 0.5A. If it gets blown up, you must replace it with an identical one. NEVER
REPLACE THE FUSE WITH ANOTHER ONE WITH A HIGHER VALUE.
CAUTION: Fuse substitutions have to be performed by a qualified technician.
4. INPUTS
The SAM614 Mixer accepts two different input signal types: MIC and stereo LINE
-Microphones: Channels 1 and 2 feature microphone inputs. Channels 3 and 4 also
include microphone inputs but may additionally be switched to LINE. XLR-3 connectors (21) are
used on all microphone inputs, which are prepared to accept a nominal input level of -45dBV (5.6
mV). These microphone inputs admit balanced operation. For that, it respects following connection
scheme:
Hot or direct signal > Pin 2
Cold or inverted signal > Pin 3
Ground > Pin 1
Microphones should have a low impedance (200 to 600Ω) and be monophonic. For non-
balanced operation, Pin 3 must be shorted to ground.
-Stereo LINE inputs: These are placed on channels 5 and 6 as well as on channels 3 and
4, which have an input switch and can be used alternatively as microphone inputs. Compact disc
players, tape recorders, videos... should be connected to any stereo LINE input, which feature RCA
connectors. All these inputs accept line level signals ranging from -25 to +15dBV (56.2mV to 5.62V).
-Tuners and auxiliary devices: Any auxiliary device capable of delivering between 56.2mV
and 5.62V should be connected to a LINE input (23)
-Turntables CAN NOT BE CONNECTED directly to the SAM614, as none of the inputs has
a built-in RIAA preamplifier.
6
-Connection to other mixers: When operating as a slave device, the SAM614 can be
connected to another mixer using the REC outputs (24-25). On the other hand, the SAM614 can
receive another mixer's output signals through any of its LINE inputs (master operation).
4.1. Phantom power supply
The mixer features a general activation switch for the phantom power supply (20)
necessary for condenser microphones. The switch is located on the devices rear panel. Additionally,
a set of internal jumpers can be used to individually disable the phantom supply on each MIC input.
The SAM614 is delivered with these internal jumpers set to PHANTOM ON. In order to disable one
channel's phantom supply, please refer to the configuration diagram.
4.2. Talkover
The purpose of this circuit is to automatically attenuate the musical signal. The talkover
function affects only the output bus A, that is OUT A and REC A.
In the SAM614, this mechanism comes into action whenever there is signal present on the
MIC input of channel 1, consequently attenuating all other signals assigned to the output BUS A. The
attenuation amount, or efficiency, is 30dB and starts at the first voice hit. The time in which the
musical signal recovers its original level is 2 seconds. This time can be internally modified to 1 or 3
seconds. Please refer to the configuration diagram.
It is also possible to modify the unit so that another microphone input or even a line input
activates the talkover function. To modify the talkover activation channel please refer to the
configuration diagram.
5. OUTPUTS
5.1. Out A / B
The SAM614 features two main outputs OUT A (26-27) and OUT B (28-29). They are
identically laid out balanced outputs with XLR-3 sockets.
Following connection scheme should be used:
Hot or direct signal > Pin 2
Cold or inverted signal > Pin 3
Ground > Pin 1
The balanced circuitry simulates the behaviour of a transformer. If you wanted to use one
of the outputs in non-balanced mode, you need to connect to ground the output terminal not being
used. Otherwise, the output signal would not have the necessary level nor quality.
7
A / B Output assign pushbuttons (2-4): One of the main advantages of the SAM614 mixer
is that the input signals can be directed to any of the two outputs or to both simultaneously. This
feature is particularly useful when you need to send music or spoken messages to specific zones.
The A / B pushbuttons and their associated LED indicators (7-8) let you redirect each input to the
desired output.
ATTENTION: Care should be taken when adjusting the mixer's general output level OUT
VOL (12). The "clip" indicators of the connected power amplifier should never stay permanently lit. It
may however sporadically light up to the rhythm of the lowest frequencies of the music.
Output A additionally features a mono switch (10) that sums both left and right channels on
output BUS A.
Changing input sensibility from 0dBV to +6dBV: Although both main outputs are factory
adjusted for a nominal level of 0dBV, it is possible to individually raise the level to +6dBV by means
of internal connections. To modify the nominal output levels please refer to the configuration
diagram.
5.2. "REC" Recording outputs
The SAM614 features two additional recording outputs that use RCA type connectors.
These outputs REC A (24) and REC B (25) carry the same signal as the respective main outputs, but
lack tone control and are not balanced. Consequently, the REC A output will be affected by the
talkover function.
5.3. PHONES Output
In order to obtain the maximum performance, headphones should have a high impedance
(200 to 600Ω). Headphones are connected to the PHONES socket (17) on the front panel, a
normalized 1/4'' stereo jack socket. The sleeve is ground, the ring is the right channel and the tip the
left one. The associated A / B pushbutton (15) will let you choose which output bus should be sent to
the headphones socket.
6. CONSIDERATIONS
6.1. Starting up
You can power up this unit by pressing the power switch (18). Although powering up noise is
minimum, it is advisable to power up all your devices by following this sequence: sound sources, mixing
unit, equalizer and - finally - power amplifiers. Powering down sequence must be identical but in reverse
order. By following this simple rules you will avoid any peaks or transitories produced by these
sequences to reach the following devices of the chain.
6.2. Input sensibility
The SAM614 has a highly efficient input sensibility adjustment system that allows for
precise adaptation to the varying levels delivered by different sound sources. This system uses a set
of potentiometers only accessible with an appropriate screwdriver offering an adjustment range of
±20dB in respect to the nominal input sensibility. This wide range is more than enough to adapt to
any existent sound source.
8
For adjusting one channel's input sensibility we recommend you to consider following
guideline: Position the volume potentiometer to position 10 while all other channels are at 0. Start the
sound source at its maximum level and adjust so that the 0dB LED of the output level indicator (OUT
A / B section) sporadically flashes. The +6dB LED should never light up.
Repeat this process with all channels where sound sources will be connected. Make sure
that when all channels are mixed together, the +6dB LED is not permanently lit, but instead
sporadically flashes. Should the former happen, repeat the entire operation attenuating more each
channel.
6.3. Channel indicators
Besides the A / B output assign indicators (see section 5.1), the SAM614 has two useful
indicators on each of its channels.
The SP Signal Presence indicator (5) shows that signal is effectively present on the
channel input.
The CLIP indicator (6) warns that the channel is almost saturated. As a rule of thumb this
indicator should never stay lit permanently.
6.4. Equalization
Tone controls (9-11-13) provide a gain/attenuation of ±15dB for each of the three bands,
which are centered at 100Hz, 2kHz and 10kHz. Because of the intended applications of this unit, it has
a tone control system that needs a screwdriver to be used in order to perform the adjust, thus avoiding
any error during the normal use procedure.
6.5. Level indicators
These indicators (14) monitorize the signal level present on each output bus, before the
final volume control.
6.6. Audio monitoring
The signal present on the output buses A or B can be monitored through the PHONES
output (17). The pushbutton (15) selects the desired bus.
6.7. 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 SAM614 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.
9
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.
6.8. 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.
10
MANUAL DE INSTRUCCIONES SAM614
1. NOTA IMPORTANTE 11
1.1. Precauciones 11
2. INTRODUCCIÓN 11
3. INSTALACIÓN 12
4. ENTRADAS 12
4.1. Alimentación Phantom 13
4.2. Talkover 13
5. SALIDAS 13
5.1. Out A / B 13
5.2. Salidas para grabación “REC” 14
5.3. Salida de auriculares 14
6. CONSIDERACIONES 14
6.1. Puesta en funcionamiento 14
6.2. Ganancia 15
6.3. Indicadores de vía 15
6.4. Ecualización 15
6.5. Indicadores de nivel 15
6.6. Sistema de monitorización auditivo 15
6.7. Bucles de masa, ruido de fondo 16
6.8. Limpieza 16
7. CARACTERÍSTICAS TÉCNICAS 32
8. DIAGRAMAS 33
8.1. Diagrama de configuración 33
8.2. Lista de funciones 34
8.3. Diagrama de funciones 36
8.4. 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.
11
1. NOTA IMPORTANTE
Agradecemos su confianza por haber elegido nuestro mezclador SAM614. 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.
Cualquier cambio en la configuración debe ser realizada 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 SAM614 es un mezclador profesional de una unidad rack de sencilla manipulación
diseñado para aplicaciones de comunicación pública y sonorización. Estas son sus características
principales:
- Seis canales: 2 con entradas para MICRO balanceado, 2 con entradas para LINE y dos
combinados seleccionables MICRO balanceado / LINE.
- Alimentación phantom para las entradas de MICRO.
- Dos salidas estéreo balanceadas con posibilidad de asignar cada vía a una de ellas o a ambas
mediante selectores A / B situados en la placa de mandos.
- Ajuste fino de la ganancia de entrada, accesibles mediante destornillador, y volumen de vía.
- Indicadores luminosos para cada vía: presencia de señal a la entrada y recorte CLIP.
- Controles de tono de tres bandas accesibles mediante destornillador, para cada una de las dos
salidas.
- Indicadores de nivel de mezcla por canal (-10, 0 y +6dB).
- Selector de monitoraje por auriculares con control de volumen.
- Dos salidas de grabación.
- Selector mono / estéreo para la salida A.
- Talkover incorporado.
12
3. INSTALACIÓN
Se trata de un mezclador especialmente diseñado para ubicación en muebles rack de 19",
ocupando una unidad de altura. El SAM614 ha sido concebido para ser manipulado por personas con
pocos conocimientos técnicos. Por esta razón sus ajustes de sensibilidad de entrada y tonos no son
accesibles. Ambos ajustes se realizarán desde el mismo panel frontal mediante destornillador de
ajuste.
Dos consideraciones deben tenerse muy presentes en el momento de buscar la ubicación
de su SAM614: por un lado la máxima comodidad de utilización y por el otro permitir un fácil acceso
en la realización de las conexiones de las que el mezclador va a ser punto de llegada y partida.
Ya que el consumo del SAM614 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.
Debe procurarse situar el mezclador alejado de fuentes de ruido (variadores de tensión,
motores, etc...) así como de los cables de red.
El SAM614 funciona con tensión alterna de 90 a 264V y 47 a 63 Hz. Este aparato equipa
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 SAM614 está protegido
con un fusible de red (31) 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.
4. ENTRADAS
El SAM614 admite dos tipos de entradas MIC y LINE estéreo.
-Micrófonos: Las vías 1 y 2 disponen de entradas para micrófono. Las vías 3 y 4 disponen
asimismo de entradas para micrófono conmutables a LÍNEA. Todas disponen de conectores XLR3
(21) y están preparadas para un nivel nominal de entrada de -45dBV (5.6mV). 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 600Ω) y monofónicos. Para
conexiones NO balanceadas cortocircuitar a masa el terminal 3.
- Entradas LINE estéreo: Se encuentran en las vías 5 y 6 así como en las vías 3 y 4
aunque en este caso están compartidas con las de MICRO y se activan mediante un selector de
entrada. Compact disc, magnetófonos, cassettes y videos... deben ser conectados a cualquiera de
las entradas LINE estéreo, equipadas con conectores tipo RCA. Todas estas entradas admiten
señales de nivel de línea comprendidas entre -25 y +15dBV (56.2mV y 5.62V).
Loading...