Ecler NXA User Manual [en, de, es, fr]

USER MANUAL MANUAL DE INSTRUCCIONES NOTICE D'UTILISATION BEDIENUNGSANLEITUNG

NXA series

Graphic Symbol Explanation

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.

The lightning flashes printed next to the OUTPUT terminals of the amplifier are intended to alert the user to the risk of hazardous energy. Output connectors that could pose a risk are marked with the lightning flash. Do not touch output terminals while amplifier power is on. Make all connections with amplifier turned off.

WARNING: To prevent fire or shock hazard, do not expose this equipment to rain or moisture

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.

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, suck 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 (14) 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 (15). For this reason, it always shall remain readily operable.

15. Caution! The lateral heat sinks may have sharp edges

LIST OF CONTENTS

1. IMPORTANT NOTE 04

1.1. Precautions 04

2. INTRODUCTION 04

3. INSTALLATION 06

3.1. Location, assembly, ventilation 06

3.2. Mains connection 06

3.3. Signal input connections 06

3.4. Output connections 07

3.5. Ethernet port 07

3.6. GPI remote control ports 07

3.7. Connecting the GPI remote control ports 07

3.8. FAULT port (equipment self-diagnosis) 08

4. OPERATION AND USAGE 09

4.1. Start up 09

4.2. Front panel LED indicators 09

4.3. Front panel controls 10

5. CLEANING 10

6. FUNCTION LIST 11

7. FUNCTION DIAGRAM 11

8. TECHNICAL CHARACTERISTICS 42

9. BLOCK DIAGRAM 45

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.

1. IMPORTANT NOTE

Congratulations! You're the owner of a carefully designed and manufactured product. Thank you for your confidence and your choice of our NXA series multi-channel digital processing amplifier, with Ethernet and RS-232 remote control. In order to obtain maximum operativity and perfect functioning order, it is most important to carefully read all considerations taken into account in this manual before connecting this amplifier. We recommend our authorised Technical Services if any maintenance task should be needed so that optimum operation shall be achieved. The NXA series is guaranteed for 3 years.

1.1. Precautions

The equipment must be correctly grounded (ground resistance, Rg = 30 or less). The environment must be dry and dustless. 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 grilles with any kind of material. If the device requires any intervention and/or connection/disconnection, it must be first powered off. Do not handle the speaker output terminals with your device turned on, there are voltages up to 400Vpp. The output cabling should be connected by a qualified technician. Otherwise only use pre-made flexible cables. There are no user serviceable parts inside the amplifier.

2. INTRODUCTION

The NXA series consists of three models with 4 channels and two models with 6 channels:

o NXA4-80: 4 x 80 W RMS @ 4 o NXA4-200: 4 x 200 W RMS @ 4 o NXA4-400: 4 x 420 W RMS @ 4 o NXA6-80: 6 x 80 W RMS @ 4 o NXA6-200: 6 x 200 W RMS @ 4

All models are equipped with convection cooling, without fan, a feature allowing a very quiet operation,

suitable for installation in noise sensitive environments.

The output (amplified) channels can work independently or paired, two operating modes being then available: BRIDGE (one pair behaves as a single higher power amplifier) or PARALLEL (one pair has two amplified outputs, but both receive and deliver identical signals, simultaneously managed).

It also incorporates significant technological innovations regarding digital processing and remote management via Ethernet and RS-232, making it the perfect candidate to undertake mobile applications and fixed installations, centralized or distributed, requiring highly integrated remote control and monitoring with standard Ethernet networks. NXA units are delivered with an internal DSP processing module and matrix functions, as well as EclerNet remote management, that allows the physical connection of the amplifier to an Ethernet network and its remote management and monitoring from anywhere on this one, using EclerNet Manager (*) Windows® application. Please refer to the EclerNet Manager software manual for more information.

Other remarkable features of this series are :

 4/6 analogue audio inputs

 4/6 amplified output channels (SINGLE (independent), PARALLEL or BRIDGED modes)

 4/6 GPI remote control ports (compatible with 0-10VDC analogue devices, such as WPmVOL and

WPmVOL-SR wall panels). A GPI port can control one or more inputs or outputs (volume) or manage the recall of presets 1 to 5 (GPI-1 only)

 Class D amplifiers (optimal energy consumption)

 Auto stand-by function (optimal energy consumption)

 100% silent, thanks to unforced convection cooling (no fan)

 First class digital audio codecs, with excellent signal-to-noise ratio

Ethernet interface, supporting EclerNet Manager software platform and UCP (User Control Panels)



web server-web client remote control system

 RS-232 Interface

 TP-NET external remote control protocol, via Ethernet and RS-232 (compatible with Crestron®,

AMX®, RTI®, VITY®, etc..)

 POWER ON / OFF button and / or front panel volume controls can be deactivated by software,

preventing unauthorized tampering

 Front panel volume controls are assignable to one or more audio inputs or one or more amplified

outputs

 Self-diagnosis function for correct operation of the amplifier, with FAULT relay: allows the device failure

detector to switch to an external redundant system

 Integrated "Anti-clip" system

 Rack format (2RU)

 Integrated DSP processor, configurable from EclerNet Manager. Main functions:

o Each channel has a dedicated audio input mixer that enables you to generate a separate mix

from the ones made in the other channels

o Independent controls per channel: VOLUME, MUTE, SOLO, PHASE INVERSION, MAX. VOL

(upper volume limit) and MIN. VOL (lower volume limit)

o LP and HP crossover filters, up to 4th order, per channel o Bank of 8 parametric EQ filters, per channel o Compressor with THRESHOLD, COMP. RATIO, ATTACK, RELEASE, KNEE and MAKE-UP

GAIN settings, per channel

o Delay, up to 1000 milliseconds, per channel o DUCKER function (priority): an input can be configured with highest priority, being able to

reduce and replace the audio content of any channel, when its signal exceeds the detection threshold. This feature is vital in emergency / evacuation systems, which should play a specific alarm message and / or evacuation instead of the regular audio program when detecting an emergency scenario

o 5 configuration memories (presets) are available

* EclerNet Manager software is available on www.ecler.com.

3. INSTALLATION

3.1. Location, assembly, ventilation

NXA series products have a 19" rack format (2RU).

It is very important not to enclose the amplifier or expose it to extreme temperatures as it generates heat.

It’s also necessary to promote the passage of fresh air through the ventilation holes of the chassis, leaving at least one rack unit off between each device and installed above and below it in the rack frame.

If multiple products are installed in the same rack or in a cabinet with closed doors, it is highly recommended to install fans in their upper and lower ends for a forced airflow from the bottom up.. This upward air flow will help to dissipate the heat generated inside.

In order to optimize as much as possible the correct thermal dissipation of equipment installed in a closed rack, it is advisable not to place power amplifiers under other appliances, but upon these ones.

All NXA series products are supplied with plastic washers in order to be mounted in a rack without

damaging the mounting ears.

3.2. Mains connection

NXA series products are powered by 110-120, 220-240VAC, 47 / 63Hz , depending on the country (see nameplate on the device). The mains cables must not be near the shielded cables carrying the audio signal, as this could cause humming.

3.3. Signal input connections

NXA series rear panel provides analog, balanced, line level signal inputs. The selection of hardware inputs

and their routing and mixing towards either amplifier channel is performed from the EclerNet Manager control application. Please refer to the EclerNet Manager software manual for more information.

Signal input connectors are 3 position screw terminal block (7). The wiring is:

HOT or direct signal > Pin + COLD or inverted signal > Pin GROUND > Pin 

For unbalanced connection short-circuit pin  to pin -.

STACK outputs (8) available for inputs 1 and

2 are parallel to the input and serve to re-send the signal of these inputs (INPUTS, CH1 / CH2) to other input channels, amplifiers or sound systems.

The input impedance is 22K (balanced). This impedance makes possible to parallel several amplifiers without loosing audio quality.

3.4. Output connections

The rear panel OUTPUTS section is fitted with two position screw terminal block (9) for each amplifier

channel (4 or 6, depending on model). Always respect the relative polarity for outputs (+ and - on each output connector), wiring and speakers. In bridge mode, follow the wiring and polarity standard indicated near the output screw terminal block and labeled as "BRIDGE".

SINGLE / PARALLEL / BRIDGE operating modes are selected from EclerNet Manager control application. Please refer to the EclerNet Manager software manual for more information.

The connection cable that joins the amplifiers outputs and the loudspeakers must be of good quality,

sufficient section and as short as possible. This is most important when the distances to cover are long ones i.e. up to 10 meters it is recommended to use a section not inferior to 2.5mm

and for superior distances 4mm2.

3.5. Ethernet and RS-232 ports

An RJ-45 connector (12) allows the connection to an Ethernet network and its management from EclerNet

Manager application, or its control from a third party equipment, thanks to the TP-NET external control protocol. A 3-pin Euroblock connector for the integrated RS-232 (11) interface also allows the device remote control using the TP-NET protocol. Refer to the EclerNet Manager manual and TP-NET protocol for more information.

3.6. GPI remote control ports

The NXA series rear panel provides 4 or 6 (depending on the model) 0-10VDC remote control ports (13), labeled "GPI 1-6", to which you can connect analogue devices such as the WPm series wall panels. With the EclerNet Manager application, a function can be assigned to each of these ports: a GPI port can control one or more inputs or outputs (volume) or manage the presets #1-5 recall (GPI-1 only).

The level of each amplifier channel or output volume is determined by the sum of values of:

 its front rotary control (if it has one assigned)  its channel fader (slider) (in EclerNet Manager)  its GPI remote control port (if it has one associated with its volume control)

3.7. Connecting the GPI remote control ports

By linking a remote port to a volume control, the amount of attenuation applied to the assigned input(s) or output(s) can be determined using three types of external devices:

a) A potentiometer with a nominal value between 10k and 50k (e.g. WPM series wall panels).

b) Using a device that generates a control voltage from 0 to 10V DC.

c) Using remote relays/dry contacts.

: You can connect up to 16 remote control ports in parallel to the same hardware control

NOTE

potentiometer. Ground connections of all devices those ports belong to must be joined.

The connection cables can be up to 500m long if a section of 0.5mm

is used.

Consult the available accessories at your ECLER dealer or at www.ecler.com

3.8. FAULT port (equipment self-diagnosis)

The rear panel FAULT connector (10) is a NO / NC dry contact linked to the self-diagnosis function of the unit. This function measures from time to time if each amplifier channel is indeed working properly and delivering the correct amplified program to its output terminals. If the test result is correct, i.e. if the amplifier is perfectly operating, the FAULT contact remains at its default position, adopted immediately after the boot sequence. If, on the contrary, and for whatever reason, the amplifier is not functional or is not correctly operating, the FAULT contact toggles (a closed contact opens and an opened contact closes).

Thus, an external device can monitor whether a NXA device is working properly or not, and in the latter case it can report the fault and / or switch to a redundant equipment.

You can activate this function from the EclerNet Manager application and determine the integrity test frequency (every minute, every hour, etc.).

4. OPERATION AND USAGE

4.1. Start up

When the rear panel POWER switch (14) is pressed, the amplifier is powered by the network and can be

switched on, briefly holding the front POWER button (6) or remotely from the EclerNet Manager application or with the TP-NET protocol.

In a complete audio installation, it is important to start up the equipment in the following sequence: sound sources, mixer, equalizers, active filters, processors and finally power amplifiers. To turn them off the sequence should follow an inverse pattern.

4.2. Front panel LED indicators

NXA series products have the following LEDs on their front panel:

 SP indicators (2): indicate a signal presence in the amplification channels. These indicators light up when the

input signal exceeds a -40dB threshold.

 CLIP / PROTECT indicators (4): (available only on models 4-200, 6-200 and 4-400)

They light up for two possible reasons:

o When the signal delivered to the speaker is close to the actual clipping level. The CLIP detection

system considers possible voltage fluctuations of power supply, always giving a real indication even if they exist. It is normal for CLIP indicators to be lit at the bass frequencies rhythm for high operating levels, as these frequencies have the higher energy content. You must take care that these indicators do not permanently light up during normal operation of the equipment.

o To indicate the absence of signal at the amplified output of the unit in the following cases:

 During the startup process up to the end of the STANDBY time necessary to stabilize the

amplifier internal tensions, before being finally operational.

 The equipment enters protection mode if it detects a low frequency signal that may

damage the speakers, excessive internal temperature, a short circuit at the amplified

output or a possible internal damage. In any case, if these indicators permanently light up, it is a sign of malfunctioning and its cause should be investigated.

 CLIP indicators (3): (available only on models 4-80 and 6-80)

They light up when the signal delivered to the speakers is near clipping. The CLIP system considers possible voltage fluctuations of power supply, always giving a real indication even if they exist. It is normal for CLIP indicators to be lit at the bass frequencies rhythm for high operating levels, as these frequencies have the higher energy content. You must take care that these indicators do not permanently light up during normal operation of the equipment.

 DATA transfer indicator (5): blinks to indicate a data transfer activity between the device and the remote

control PC running EclerNet Manager.

Note: all front panel LEDs blink when the "Device Finder" function is activated in EclerNet Manager application. That’s useful for identifying a physical device from its virtual counterpart in this application. Please refer to the EclerNet Manager software manual for more information.

4.3. Front panel controls

The front panel includes a series of knobs and a on/off button.

The equipment can be locally switched on by holding down the POWER key until the startup sequence

begins. Shutdown also requires holding down the same key during a brief period.

The POWER key has an integrated LED that lights up in orange when the amplifier is in standby mode (STANDBY), in green during operation (ON), and in red during the startup sequence or when the amplifier is in protection mode.

After turning on and once the boot sequence completed, the device is available for use in normal conditions.

Each front panel LEVEL knob (4 or 6, depending on the model) can be linked to the volume control of one or more audio inputs or one or more audio outputs of the unit. The linking, like the other device setup settings, is made from the EclerNet Manager application. See the EclerNet Manager manual for more information.

Moreover, the EclerNet Manager application allows the DSP processing management (volume, phase, EQ, compression, delay, customised input mixes for each output channel, priority or DUCKER function, etc..) for each channel, each channel being used independently (SINGLE) or in pairs (BRIDGE, PARALLEL modes) and remotely managed individually or by groups of channels and / or amplifiers from a remote Ethernet location.

In BRIDGE and PARALLEL modes, the output level control of each channel pair from a front LEVEL knob is done using the first channel of the pair only (CHANNEL 1 for 1 & 2, CHANNEL 3 for 3 & 4 and Channel 5 for 5 &

6).

GPI ports also allow to remote control the input or output volume from a potentiometer or another external hardware device. Remember that the final level of each amplifier channel or output volume is determined by the sum of values of:

 its front rotary control (if it has one assigned)

 its channel fader (in EclerNet Manager)

 its GPI remote control port (if it has one associated with its volume control)

5. 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.

6. FUNCTION LIST 7. FUNCTION DIAGRAM

1. Input attenuator

2. Signal present indicator, SP

3. Clip indicator, CLIP

4. Combined clip and protection indicator,

CLIP/PROT

5. Data transfer indicator, DATA

6. On / Off key, POWER ON

7. Input terminal block

8. Terminal block to other amplifiers, STACK

9. Output terminal block

10. FAULT terminal block

11. RS-232 terminal block

12. Ethernet port

13. Terminal block for remote control device

14. Start-up switch

15. Mains socket

Explicación de los Símbolos Gráficos

El símbolo del relámpago con una flecha en la punta y dentro de un triangulo equilátero, tiene el propósito de alertar al usuario de la presencia de un voltaje peligroso y sin aislar dentro del aparato, y de una magnitud tal que puede constituir riesgo de descarga eléctrica para las personas.

El símbolo de exclamación dentro de un triangulo equilátero, tiene el propósito de alertar al usuario de la presencia de instrucciones importantes sobre la operación y mantenimiento en la información que viene con el producto.

Los símbolos de relámpagos dibujados cerca de los terminales de salida se utilizan para alertar al usuario del riesgo de descargas peligrosas. Los conectores de salida que podrían plantear algún riesgo se indican con este símbolo del relámpago. No toque los terminales de salida mientras que el amplificador esté encendido. Hacer todas las conexiones con el amplificador apagado.

ADVERTENCIA: para prevenir choques eléctricos o riesgo de incendios, no exponer este equipo a la lluvia o la humedad.

INSTRUCCIONES IMPORTANTES DE SEGURIDAD

1. Lea estas instrucciones

2. Guarde estas instrucciones

3. Preste atención a todas las advertencias

4. Siga todas las instrucciones

5. No utilice este aparato cerca del agua

6. Límpielo solamente con un paño seco

7. No bloquee ninguna abertura para ventilación. Instálelo de acuerdo con las instrucciones del fabricante

8. No lo instale cerca de fuentes de calor como radiadores, estufas u otros aparatos que produzcan calor, incluidos amplificadores.

9. No elimine el propósito de seguridad del cable de corriente polarizado o con conexión de tierra. Un cable polarizado tiene dos bornes, uno más ancho que el otro. Un enchufe con conexión a tierra, tiene dos bornes y un tercer borne conectado a tierra. Este tercer borne está previsto para su seguridad. Si el cable proporcionado no entra en su enchufe, consulte con un técnico electricista para reemplazar ese enchufe obsoleto.

10. Proteja el cable eléctrico de ser aplastado, en especial en la zona de los conectores, los receptáculos de los mismos y en el punto en el que el cable sale del aparato.

11. Utilice solamente los accesorios especificados por el fabricante.

12. Desconecte el aparato durante las tormentas eléctricas o cuando no lo vaya a usar durante periodos largos de tiempo.

13. Para cualquier reparación, póngase en contacto con un servicio técnico cualificado. La reparación es necesaria cuando el aparato no funciona con normalidad o ha sido dañado por cualquier motivo, ya sea porque el cable o el enchufe estén dañados, porque se hayan derramado líquidos o hayan caído objetos dentro del aparato, o porque el aparato haya sido expuesto a la lluvia o se haya caído.

14. Desconexión de la red: apagando el interruptor de POWER (14) todas las funciones e indicadores del amplificador se pararán, pero la completa desconexión del aparato se consigue desconectando el cable de red de su conector (15). Por esta razón, éste siempre debe tener fácil acceso.

15. ¡Precaución! Los radiadores laterales pueden tener bordes cortantes.

ÍNDICE

1. NOTA IMPORTANTE 14

1.1. Precauciones 14

2. INTRODUCCIÓN 14

3. INSTALACIÓN 16

3.1. Ubicación, montaje, ventilación 16

3.2. Conexión a red eléctrica 16

3.3. Conexiones de entrada de señal 16

3.4. Conexiones de salida 17

3.5. Puertos Ethernet y RS-232 17

3.6. Puertos GPI de control remoto 17

3.7. Conexionado de los puertos GPI de control remoto 17

3.8. Puerto FAULT (autodiagnóstico del equipo) 18

4. FUNCIONAMIENTO 19

4.1. Puesta en marcha 19

4.2. Indicadores LED del panel frontal 19

4.3. Controles del panel frontal 20

5. LIMPIEZA 20

6. LISTA DE FUNCIONES 21

7. DIAGRAMA DE FUNCIONES 21

8. CARACTERÍSTICAS TÉCNICAS 42

9. DIAGRAMA DE BLOQUES 45

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.

1. NOTA IMPORTANTE

¡Enhorabuena!. Vd. posee el resultado de un cuidadoso diseño y una esmerada fabricación. Agradecemos su confianza por haber elegido nuestro procesador digital multicanal y autoamplificado serie NXA, equipado con control remoto Ethernet y RS-232. Para que pueda conseguir la máxima operatividad y un funcionamiento perfecto, antes de su conexión es MUY IMPORTANTE que lea detenidamente las consideraciones que se detallan en éste manual. Para asegurar el óptimo rendimiento del aparato, su mantenimiento debe ser realizado por nuestros Servicios Técnicos. La serie NXA tiene una garantía de 3 años.

1.1. Precauciones

El equipo debe conectarse a una toma de tierra en correctas condiciones (Resistencia de tierra, Rg = 30 o menos). El ambiente de trabajo deberá ser seco y estar totalmente libre de polvo. 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. En caso de requerir alguna intervención y/o conexión-desconexión del dispositivo debe desconectarse previamente la alimentación. No manipular los terminales de salida hacia el altavoz con el equipo en marcha; se hallan presentes tensiones de hasta 400 Vpp. El cableado de la salida debe ser realizado por personal técnico cualificado o usar cables flexibles ya preparados. En el interior del amplificador no existen elementos manipulables por el usuario.

2. INTRODUCCIÓN

La serie NXA consta de 3 modelos de 4 canales y otros 2 de 6 canales:

o NXA4-80: 4 x 80 W RMS @ 4 o NXA4-200: 4 x 200 W RMS @ 4 o NXA4-400: 4 x 420 W RMS @ 4 o NXA6-80: 6 x 80 W RMS @ 4 o NXA6-200: 6 x 200 W RMS @ 4

Todos los modelos disponen de ventilación por convección, sin ventilador, característica que les confiere

un funcionamiento muy silencioso y apto para su instalación en entornos sensibles al ruido ambiental.

Los canales de salida (amplificados) pueden trabajar de manera independiente o bien emparejados, siendo posible en éste último caso los modos de trabajo PUENTE (una pareja se comporta como un único amplificador de mayor potencia) o PARALELO (una pareja mantiene sus dos salidas amplificadas, pero ambas reciben y entregan señales idénticas, siendo gobernadas de manera simultánea).

Incorpora además importantes innovaciones tecnológicas en cuanto a procesamiento digital y gestión remota vía Ethernet y RS-232, que la convierten en el perfecto candidato para acometer aplicaciones móviles e instalaciones fijas, tanto centralizadas como distribuidas, que requieran de control y supervisión remotos de alto nivel e integración con redes Ethernet estándar. Las unidades NXA incluyen de serie un módulo interno de procesamiento DSP y funciones matriciales, así como gestión remota EclerNet, que permiten el conexionado físico del amplificador a una red Ethernet y su gestión y supervisión remotas desde cualquier punto de la misma, empleando para ello la aplicación Windows® EclerNet Manager (*). Consulte el manual de la Aplicación EclerNet Manager para obtener más información..

Otras características destacables de esta serie son:

 4/6 entradas de audio analógicas

 4/6 canales de salida amplificada (modos de trabajo SINGLE (independiente), PARALELO o

PUENTE)

 4/6 puertos GPI de control remoto (compatible con dispositivos analógicos 0-10VDC, como los

paneles murales WPmVOL y WPmVOL-SR). Un puerto GPI puede controlar una o varias entradas o salidas (volumen), o bien gestionar la recuperación de presets 1 a 5 (sólo GPI-1)

 Amplificadores Clase D (óptimo consumo energético)

 Función Auto stand-by (óptimo consumo energético)

 100% silenciosos, gracias a la ventilación por convección, no forzada (sin ventilador)

Codecs de audio digital de primerísima clase, con una excelente relación señal-ruido



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