Ecler AMPACK SERIES User manual

USER MANUAL

MANUAL DE INSTRUCCIONES

NOTICE D'UTILISATION

BEDIENUNGSANLEITUNG

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INSTRUCTION MANUAL

1. IMPORTANT REMARK 04

1.1. Conformity with international standards 04

2. INTRODUCTION 04

3. INSTALLATION 05

3.1. Placement and mounting 05

3.2. Mains connection 05

3.3. Input connections 06

3.4. Output connections 06

3.5. Input/Output options 07

4. OPERATION AND USAGE 07

4.1. Start up 07

4.2. Input attenuation 07

4.3. Remote control 08

4.4. Connection of the VCA control 08

4.5. AUTO STANDBY function 09

4.6. Indicators 09

4.7. DLAPACK2-70 10

5. CLEANING 10

6. FUNCTION LIST 11

7. FUNCTION DIAGRAM 11

8. TECHNICAL CHARACTERISTICS 39

9. BLOCK DIAGRAM 40

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 REMARK

Congratulations! You are the owner of a carefully designed and manufactured equipment. We

thank you for having purchased our AMPACK2-70 / 4-70 compact amplifier or DLAPACK2-70 line

adaptor.

It is VERY IMPORTANT that you read this manual before connecting the amplifier in order

to obtain its maximum performance.

We recommend our authorised Technical Services whenever any maintenance task should

be needed so that optimum operation shall be achieved.

1.1. Conformity with international standards

The AMPACK2-70 / 4-70 amplifier series complies with the following international standards:

• EN55103-1 Electromagnetic compatibility.

• Product family standard for audio, video, audio-visual and entertainment lightning control apparatus

for professional use

• Part 1: Emission

• EN55103-2 Electromagnetic compatibility.

• Product family standard for audio, video, audio-visual and entertainment lightning control apparatus

for professional use

• Part 2: Immunity

• EN60065 Audio, video and similar electronic apparatus. Safety requirements

Guidelines 73/23/EEC and 2004/108/EC are therefore accomplished

2. INTRODUCTION

The AMPACK2-70 / 4-70 compact amplifier series offers to the installer the most resistant and

reliable amplification technology available on the professional audio market. Its compact and silent

design allows its usage in nearly every place and application that requires power values up to 4 x 70W

RMS at low impedance (4Ω). For 100V line applications, you need to use the DLAPACK2-70 dual

converter to transform two 70W channels at 4 Ω in two 70W channels for 100V line (see paragraph 4.7.

DLAPACK2-70 for more information).

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Main characteristics:

• 2 x 70W RMS (AMPACK2-70) or 4 x 70 WRMS (AMPACK4-70) amplifier at 4 Ω

• Integrated power supply

• AUTO STANDBY: when no signal is present, the AMPACK enters the Standby mode, reducing its

power consumption

• Silent amplifier (convection cooling, without fan)

• Stereo, parallel and bridged operating modes are available

• VCA based remote control for volume (independent for each input channel)

• EUROBLOCK connectors for input, output and VCA remote control

• Additional RCA stereo input jack (AMPACK2-70 only)

• Mono 1+2 switch (AMPACK2-70 only)

• Independent gain controller for each channel, protected against unintentional changes

• Integrated 100Hz high-pass filter

• Direct mounting on 35mm DIN rail

3. INSTALLATION

3.1. Placement and mounting

AMPACK series is suitable for direct mounting on 35mm DIN rail

3.2. Mains connection

The amplifier is powered with alternate current, 220-240V 50/60Hz.

The amplifier should have an earth connection in good conditions (earth resistance, Rg=30Ω

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 grids with any kind of material.

In case there is some type of intervention and/or connection-disconnection of the amplifier,

it is most important to previously disconnect the mains power supply. There are no user or

serviceable parts inside the amplifier.

You should avoid that the supply cable twists with the shielded signal cables, as this

could lead to unwanted hum.

Additionally, as a corrective measure of hum caused by situations like these ones, the

AMPACK series has a built-in high-pass filter with a 100Hz cut-off frequency and a front panel switch to

activate it.

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3.3. Input connections

The signal input use electronically balanced EUROBLOCK connectors (7) with input impedance greater

than 20kΩ and a nominal sensitivity of 0dBV(1V). The pin out is as follows:

Additionally, the AMPACK2-70 has an unbalanced stereo RCA input (6) for direct

connection of audio sources like CD players, DVD players, media players, etc.

3.4. Output connections

The outputs (11) are located on the front panel with Euroblock connectors.

The cables that connect the AMPACK’s outputs with the loudspeakers must offer high

quality, with sufficient section and as short as possible. This is especially important when the

distance between amplifier and speakers are great; a section of at least 2.5mm

2

is recommended for

distances up to 10m; for greater distances, section should be greater than 4mm

2

.

Remember that the minimum operation impedance is 4Ω when using the amplifier

in mono or stereo and 8Ω when using the bridge mode. For a correct operation of the AMPACK lower

impedances than the ones described previously should not be used.

Caution: In bridged mode only the terminal indicated on the unit should be used.

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3.5. Input/Output options

The AMPACK2-70 allows the following operating modes:

• Stereo: channels 1 and 2 are separately amplified and respectively sent to outputs 1 and 2 (the

Mono/Stereo switch, labelled as MONO 1 +2 on the front panel, must NOT be engaged)

• Parallel (Mono): the Mono/Stereo switch, labelled as MONO 1+2 on the front panel, must be

engaged. Channels 1 and 2 are summed and sent to the amplifier channels 1 and 2, each

channel having an independent output volume

• Bridged: the switch should also be engaged, as in the previous case. Observe the output wiring

guidelines indicated on the device when it operates in bridged mode. Channels used in bridged

mode should have their "VOL" attenuators set at the same position, preferably at maximum

level.

The AMPACK4-70 allows the following operating modes:

• Independent: channels 1, 2, 3 and 4 are independently amplified and respectively sent to

outputs 1, 2, 3 and 4

• Parallel: to operate in this mode, you must connect the same input signal to multiple channels of

amplification, each channel having an independent output volume

• Bridged: this mode can operate with channel pairs 1-2 and/or 3-4. This requires connecting the

same input signal to channels 1-2 (and/or 3-4) and wiring outputs as indicated on the equipment

for operating in bridged mode. Channels used in bridged mode should have their "VOL"

attenuators set at the same position, preferably at maximum level.

4. OPERATION AND USAGE

4.1. Start up

This can be done using the power switch (1) and immediately the ON led (3) will start

lightning. We highly recommend the "safe power up sequence": First the sound sources, then mixer,

equalizers, active filters, processors and, finally, power amplifiers. Powering off should be done by

following the exact reverse sequence in order to avoid any possible peaks reaching the next device,

and consequently protecting the loudspeakers, which are specially sensitive to these peaks.

4.2. Input attenuation

These are rotary potentiometers, one per channel, located on the front panel (9) and labelled

as VOL.

These attenuators allow connection of different sound source types, independent level

control per channel of amplification and connection of speakers handling less power than the

amplifier can provide at full capacity (avoiding damage by negligence when setting the sound source

volume).

An independent level adjustment can be done using a screwdriver or another appropriate

tool.

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4.3. Remote control

AMPACK provides VCA remote control terminal strips for the volume of each channel,

labelled as REMOTE CONTROL on its front panel.

The combined usage of the rotary potentiometers located at the front panel (9) and the

remote VCA (12) control determines the final value of the signal’s attenuation for each input channel.

Therefore, a certain value can be fixed for the signal attenuation using the rotary so that the remote

control via VCA will not exceed this value and viceversa, that is, the two controls are connected in

series.

4.4. Connection of the VCA control

The signal remote attenuation level for each input channel can be set using 3 types of external

devices connected to REMOTE CONTROL ports on the front panel:

a) Using a remote potentiometer with nominal resistance between 10kΩ and 50kΩ.

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

c) Using remote relays/dry contacts.

NOTE

: you can connect a maximum of 16 REMOTE CONTROL ports in parallel to the

same hardware control potentiometer. It is essential to assemble all grounds from

amplifiers these ports belong to.

Cables can be up to approximately 500 meters, using a minimum section of 0.5 mm

2

.

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

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4.5. AUTO STANDBY function

The AUTO STANDBY functionality allows flexible installation of the AMPACK series in less

accessible places, since you can leave the device indefinitely connected to mains supply, its activation

or deactivation automatically depending on the presence of an input signal.

If the signal present at any of the device inputs remains under -35dBV for more than 2

minutes, the AMPACK automatically enters in STANDBY mode. This is well indicated by the front panel

ON indicator turning from green (ON) to red (STANDBY).

When in STANDBY mode, the power consumption of the AMPACK2-70 and the

AMPACK4-70 is lower than 9W.

When the signal level becomes higher than -35dBV the device will automatically switch to ON

mode.

4.6. Indicators

The "SP" LED (8) indicates signal presence at the amplifier input. It lights up when the

input level exceeds the set detection threshold.

The "CLlP" LED (10) lights up when the signal delivered to the speakers is nearly really to

clipping or amplifier saturation. This system considers possible variations of the mains voltage,

always giving a real indication independent of the mains voltage. Care should be taken when

adjusting input levels. The CLIP indicators (saturation or clipping) should never stay permanently lit,

but only (and at the most) at the rhythm of the sound sequence lowest frequencies. Otherwise the

signal feeding the power stages would suffer high distortion levels and have low acoustic quality and

intelligibility.

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4.7. DLAPACK2-70

The DLAPACK2-70 is a dual line adapter converting two low impedance (4 ohms)

amplified signals in two signals suitable to work at high impedance (70 or 100V line). In this way, it is

possible to use an AMPACK2-70 or AMPACK4-70 to connect a high impedance speaker system

(you have to use two DLAPACK units with the AMPACK4-70 and one unit with the AMPACK2-70).

The connection must be made as follows:

1. With all equipment disconnected from mains, connect one at a time the outputs

of the AMPACK2-70 or 4-70 to the inputs of the DLAPACK.

2. Then connect the DLAPACK outputs to the high impedance speaker system,

using for them the 0V (or negative) and 70 or 100V (positive) terminals

depending on whether this system’s speakers are equipped with 70 or 100V

transformers.

In both types of connections always respect signals and wiring polarity.

NOTE

: in this type of installation, it is recommended to activate the 100Hz high-pass filter.

5. CLEANING

The AMPACK 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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6. FUNCTION LIST

1. Power on switch, 0/I

2. Automatic power off configuration, AUTO STANDBY

3. LED indicator, AUTO STANDBY

4. High-pass filter switch, HPF

5. Mono-stereo switch, 1+2

6. Signal input RCA connector, 1 2

7. Input Screwable terminal strip

8. Signal present indicator, SP

9. Channel volume control, VOL

10. Clip indicator, CLIP

11. Output terminals

12. Screwable terminal for remote control

13. Mains socket

14. Input Screwable terminal, INPUTS

15. Line output Screwable terminal, OUTPUTS

7. FUNCTION DIAGRAM

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8. TECHNICAL CHARACTERISTICS 8. CARACTERÍSTICAS TÉCNICAS

8. CARACTERISTIQUES TECHNIQUES 8. TECHNISCHE DATEN

AMPACK2-70 AMPACK4-70

POWER 20-20kHz 1% THD

1 Channel @ 4Ω

68 WRMS 68 WRMS

1 Channel @ 8Ω

35 WRMS 35 WRMS

2-4 Channels @ 4Ω

64 WRMS 57 WRMS

2-4 Channels @ 8Ω

35 WRMS 34 WRMS

1-2 Bridged @ 8Ω

135 WRMS 130 WRMS

Frequency response (-3dB) 10Hz - 40kHz 10Hz - 40kHz

High pass filter 3rd order Butterworth 100Hz 100Hz

THD+Noise @ 1kHz Full Pwr. <0.08% <0.1%

Intermodulation distortion 50Hz & 7kHz, 4:1 <0.1% <0.3%

TIM 100 <0.06% <0.15%

S+N/N 20Hz -20kHz @ 1W/4Ω

>80dB >80dB

Damping factor 1kHz @ 8Ω

>140 >140

Channel crosstalk @ 1kHz >50dB >50dB

Input Sensitivity / Impedance

0dBV/>20kΩ 0dBV/>20kΩ

Auto power threshold >-35dB aprox. >-35dB aprox.

Auto power time 2 min. aprox. 2 min. aprox.

Mains Voltage 230V AC 230V AC

Power consumption (pink noise, 1/8 power @ 4ohm) 96VA 135VA

Power consumption (pink noise, 1/3 power @ 4ohm) 170VA 250VA

Power dissipation (standby) <9W <9W

Dimensions 234x158.5x75mm 234x158.5x75mm

Weight 1.6kg 1.75kg

DLAPACK2-70

Output voltages 70/100V

Power rating 80W RMS MAX

Frequency response (-3dB) 45Hz÷25kHz

Dimensions 230x151.5x75mm

Weight 3.9kg

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ECLER Laboratorio de electro-acústica S.A.

Motors 166-168, 08038 Barcelona, Spain

INTERNET http://www.ecler.com e-mail: info@ecler.es

50.0193.01.00

Ecler AMPACK SERIES User manual

Ecler AMPACK SERIES User manual

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