Ecler HSA300 User Manual [en, de, es, fr]

USER MANUAL
MANUAL DE INSTRUCCIONES
NOTICE D'UTILISATION
BEDIENUNGSANLEITUNG

HSA300

INSTRUCTION MANUAL

1. IMPORTANT NOTE 04

1.1 Precautions 04

2. INTRODUCTION 04

3. INSTALLATION 04

3.1. Placement and assembly 04

3.2. Mains connection 05

3.3. Signal input connections 05

3.4. Output connections 05

3.5. Internal switch for high-pass filters 05

4. OPERATION AND USAGE 06

4.1. Turning on 06

4.2. LED indicators on the front panel 06

4.3. Volume control on the front panel 06

5. CLEANING 06

6. DIAGRAMS 07

6.1. List of Functions 07

6.2. Diagram of Functions 07

6.3. Configuration diagram 23

6.4. Block diagram 23

6.5. Technical characteristics 24

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

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1. IMPORTANT NOTE

Congratulations! You are the owner of a carefully designed and manufactured equipment. We thank
you for your trust in having chosen our single-channel HSA300 amplifier.

For the maximum effectiveness of the amplifier, it is VERY IMPORTANT that you read this User's
Guide carefully and follow the recommendations contained herein before connecting it.
We recommend our authorised Technical Services whenever any maintenance task is needed so
that optimum operation shall be achieved.

1.1. Precautions

This device must be grounded through its power cord.
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 grids with any kind of
material.

Any change in the configuration of the unit must be carried out by qualified technical personnel.
Before any work is done on the unit it should be disconnected from the power source.

There are no user serviceable parts inside the unit.

2. INTRODUCTION

The HSA300 is a single-channel power amplifier with a directly amplified high impedance output

(100V line). Its main features are:

 SPM 100 Technology - N Channel direct high impedance amplification (100V line), without

output transformers, which has the following advantages over the classic amplification for a 100V
line using transformers:

o Better frequency response in the low band of the audible spectrum (bass frequencies), in

the absence of the usual degradation for this part of the spectrum caused by the
saturation of the transformer cores

o High performance
o Low weight

 Thermal protection
 Overload protection
 “Anti-clip” or anti-saturation system against strong input signals

3. INSTALLATION

3.1. Placement and assembly

The HSA series amplifiers come in 19" rack module format, two units high.
It is important that the amplifier, as a heat source, is not placed next to other equipment nor
exposed to high temperatures.
If the installation is done inside rack cabinets enclosed by doors, it is highly recommended to fit
these with forced ascending ventilation, installing fans at the top and bottom. This upward flow of
ventilation will help in dissipating the heat generated inside.
In order to favour as far as possible the proper heat dissipation of the equipment units installed in
rack cabinets, it is advisable not to place the power amplifiers under other devices, but rather above
these.

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The HSA amplifiers are supplied with plastic washers so they can be mounted in a rack without

damaging the mounting flanges.

3.2. Mains connection

The amplifier is powered with alternating current, depending on the country, 110-120, 220-240V
50/60Hz. (see specifications plate on the device), and its maximum power draw is 482VA.
The amplifier must be connected to proper grounding ( resistance, Rg=30 or less).
Avoid intertwining the mains cable with the shielded cables that carry the audio signal, as this could
lead to interference and humming.

In order to protect the unit from an eventual electrical overload or momentary power peaks from the
internal circuits it is fitted with a fuse. Should it ever blow, unplug the unit from mains and replace it with an
identical one. If the new fuse blows again, contact our Authorized Technical Service immediately.

CAUTION: IN NO EVENT SHOULD A FUSE OF HIGHER VALUE THAN THE NOMINAL
VALUE BE INSTALLED.

3.3. Signal input connections

On it rear panel, the HSA300 amplifier has an analogue, balanced and line level input signal.

The signal input connectors are three pin Euroblock connectors (11). The assignment of the
connections is as follows:

Live or direct signal > Terminal +

Cold or inverted signal > Terminal -

Ground > Terminal 

For unbalanced connections short the - terminal to ground.

The input impedance is 22k (balanced) with a nominal sensitivity of 0dBV (1V). This impedance
allows for a large number of amplifiers to be connected in parallel without degrading the sound quality.

3.4. Output connections

The OUTPUT section on the rear panel is fitted with a two pin (10) Euroblock connector. During
the wiring tasks of one or more amplifiers, always respect the relative polarity of the outputs (+ and ­markings on each output connector), cabling and speakers.

3.5. Internal switch for pass-high filters

Inside the amplifier there is a (“jumper”) switch to enable / disable the high-pass filter of the
amplifier, with a cut-off frequency set at 70Hz and with a slope of 18dB / octave. It is recommended that
in certain applications the high pass filter should act on the 100V line, especially when the audio
playback content is primarily vocal (paging announcements, for example).

Refer to section 6.5. Block diagram and 6.3. Configuration diagram for further information.

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4. OPERATION AND USAGE

4.1. Turning on

This is done by means of the POWER ON (6) mains switch and the pilot light in the switch itself will
come on.

In a full audio installation it is essential to start up the equipment in the following sequence: sound
sources, mixers, equalizers, processors, active filters, and finally, the power amplifiers. To shut these down,
follow the reverse sequence. By following this sequence the peaks or transients produced by switching a
device on or off will not affect the next ones in the chain, preventing these from getting to the speakers,
which are the components that are likely to suffer damage in these cases.

4.2. LED indicators on the front panel

The HSA300 has the following LED indicators on the front panel:

 SIGNAL (4) presence indicator: warns of the presence of a signal at the amplifier's input. This

indicator lights up when the signal present at the input exceeds -35dB

 OVERLOAD (3) indicator: lights up when the channel reaches its power delivery capacity limit,

due to a load with an excessively low impedance

 CLIP (2) cut-off indicator: lights up when the signal delivered to the speakers is cut close to the

actual cut-off level. This CLIP system takes into account the possible fluctuations in voltage of

the power supply, always providing a true reading even though these exist. It is normal that when

operating at high output power, the CLIP indicators light up in synchronisation with the low

frequencies, which carry the most energy. Ensure that these indicators do not stay permanently

lit during the normal operation of the equipment

 THERMAL (1) heat protection indicator: indicates that the amplifier has entered a state of over-

temperature protection, its normal operation will be restored when its temperature returns to the

normal operating temperature range.

4.3. Volume control on the front panel

The front panel has rotating volume control (5) for the amplifier output level.

In the packaging of the device, you will find bag with a transparent cap that can be fitted to the
rotating control on the front panel . Its function is to protect the volume setting from accidental changes
while the installation is being used. Once inserted it is necessary to use a flat screwdriver or a similar
tool to remove it.

5. CLEANING

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. Ensure that water never gets into the amplifier through the holes of the front panel.

The front panel should not be cleaned with solvents or abrasive substances because the silk

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6. DIAGRAMS

6.1. List of Functions

1. THERMAL, heat protection indicator

2. CLIP cut-off indicator

3. OVERLOAD indicator

4. SIGNAL presence indicator

5. Volume

6. POWER switch and start up pilot light

7. Mains socket

8. Fuse holder

9. GND grounding terminal

10. OUTPUT screw-type connectors

11. INPUT screw-type connectors

12. Fan

6.2. Diagram of Functions

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MANUAL DE INSTRUCCIONES

1. NOTA IMPORTANTE 09

1.1 Precauciones 09

2. INTRODUCCIÓN 09

3. INSTALACIÓN 09

3.1. Ubicación y montaje 09

3.2. Conexión a red 10

3.3. Conexiones de entrada de señal 10

3.4. Conexiones de salida 10

3.5. Conmutador interno para filtros paso-altos 10

4. OPERACIÓN Y USO 11

4.1. Puesta en marcha 11

4.2. Indicadores LED del panel frontal 11

4.3. Control de volumen del panel frontal 11

5. LIMPIEZA 11

6. DIAGRAMAS 12

6.1. Lista de funciones 12

6.2. Diagrama de funciones 12

6.3. Diagrama de configuración 23

6.4. Diagrama de bloques 23

6.5. Características técnicas 24

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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