Ecler ESAM702 Bedienungsanleitung

50-0297-0104 eSAM702 EN

eSAM702

ANALOGUE MIXER

Installation Analogue Mixer

USER MANUAL

 
2 
 
INDEX
 IMPORTANT REMARK............................................................................................................. 3 
 IMPORTANT SAFETY INSTRUCTIONS ...............................................................................3 
 IMPORTANT NOTE...................................................................................................................5 
 INTRODUCTION........................................................................................................................5 
 INSTALLATION.......................................................................................................................... 6 
 INPUTS ........................................................................................................................................7 
 OUTPUTS....................................................................................................................................8 
 STARTING UP............................................................................................................................9 
 EQUALIZATION.........................................................................................................................9 
 VU-METER.................................................................................................................................. 9 
 GROUND LOOPS, BACKGROUND NOISE ......................................................................... 9 
 CLEANING.................................................................................................................................10 
 DIAGRAMS and FUNCTION LIST .......................................................................................11 
 CONFIGURATION DIAGRAM ..............................................................................................12 
 BLOCK DIAGRAM...................................................................................................................12 
 TECHNICAL CHARACTERISTICS .......................................................................................13 
 
 
 

IMPORTANT REMARK

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.

WARNING (If applicable): The terminals marked with symbol of “ ” may be of

sufficient magnitude to constitute a risk of electric shock. The external wiring connected

to the terminals requires installation by an instructed person or the use of ready-made

leads or cords.

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

moisture.

WARNING:An apparatus with Class I construction shall be connected to a mains

socket-outlet with a protective earthing connection.

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, such 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: When switching off the POWER switch, all the

functions and light indicators of the unit will be stopped, but fully disconnecting

the device from mains is done by unplugging the power cable from the mains

input socket. For this reason, it always shall remain easily accessible.

15. Equipment is connected to a socket-outlet with earthing connection by means of

a power cord.

16. The marking information is located at the bottom of the unit.

17. The apparatus shall not be exposed to dripping or splashing and that no objects

filled with liquids, such as vases, shall be placed on apparatus.

NOTE: This equipment has been tested and found to comply with the limits for a Class

A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment generates, uses, and can radiate

radio frequency energy and, if not installed and used in accordance with the instruction

manual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause harmful interference in which case the

user will be required to correct the interference at his own expense.

WARNING:This product must not be discarded, under any circumstance, as

unsorted urban waste. Take to the nearest electrical and electronic waste

treatment centre.

NEEC AUDIO BARCELONA, S.L. accepts no liability for any damage that may be caused

to people, animal or objects due to failure to comply with the warnings above.

IMPORTANT NOTE

Thank you for choosing our Ecler Installation Analogue Mixer eSAM702!

It is VERY IMPORTANT to carefully read this manual and to fully understand its

contents before any connection in order to maximize your use and get the best

performance from this equipment.

To ensure optimal operation of this device, we strongly recommend that its maintenance

be carried out by our authorised Technical Services.

Ecler eSAM702 comes with a 3-year warranty.

INTRODUCTION

The eSAM702 is an easy-to-use professional mixer designed for PA applications. Its

main features are:

•6 MIC/LINE STEREO input channels.

•1 seventh STEREO LINE input channel

•Balanced main stereo output

•Adjustable microphone sensitivity on the back panel.

•+18 V DC Phantom power supply available for all "MIC" inputs.

•Includes assignable Talkover on inputs 1 to 6 (the Talkover function may be

simultaneously enabled on one, two or all entries).

•Global 3-band tone controls, adjustable with a screwdriver.

•3 LED level indicators per channel for the stereo mix signal.

•Main output level control.

•Record output.

•The "MUTE" remote control input allows connection of external dry contact

closures (fire detection systems and other safety devices that have to mute the

mixer signal by activating the "NO" (normally open) control signal)).

•Mono/stereo selector for the main mix output.

INSTALLATION

The eSAM702 mixer has been specially designed to be installed in a standard 19" rack,

taking up 1U. It has been designed to be operated by non-technical users. This is the

reason why its tone controls are adjustable only with a screwdriver. On the opposite,

input and output level controls use classic and easily accessible rotary knobs.

Due to its low power consumption and heat sink, the eSAM702 doesn't need any fan

cooling. However, avoid installing it in dusty environments and/or in a location with

extreme temperature and moisture.

The mixer should be kept apart from noise and interference sources (dimmers, motors,

etc...) as well as from power cables.

The eSAM702 is powered by alternating current through its external power supply: 100-

240 VAC and 50-60 Hz. This external PSU has interchangeable connectors: American,

European, British and Chinese.

In order to protect the mixer from eventual overloads, the eSAM702 is protected by a

timered power fuse of 0.5A. If it gets blown up, you must replace it with an identical one.

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.

INPUTS

The eSAM702 supports two types of audio signals for each of its first 6 inputs (mono

MIC or stereo LINE), selectable by a MIC/LINE switch on the rear panel:

Microphone signal: 6 mixing channels offer a Euroblock connector for a nominal input

level from –50dBV (3.16mV) to –20dBV (0.1mV), with a GAIN control on the rear panel

to adjust the gain.

Here is the wiring diagram for microphones:

Microphones must be low impedance (200 to 600) and monophonic.

The eSAM702 supplies phantom power for condenser microphones; it is enabled by an

internal jumper (see diagram). By default, phantom power is disabled (factory setting).

The Talkover (priority) function operates when a signal is detected at the inputs 1 to 6

this function is assigned to; it attenuates the other inputs of the unit that don't have

priority. Turn it on/off for each input channel with the "TK" switch on the front panel.

To manage the important level differences existing between conventional CD and LINE

sources and other devices capable of producing audio signals, the LINE inputs 1-6 of the

eSAM702 are standard line inputs (0dBV) and the sensitivity of the LINE input #7 can be

selected (0/-6dBV) by internal jumper (the default position is 0dBV). A sensitivity of -

6dBV is ideal for low-level sound sources such as media players, portable MP3 players,

tablets, computers, mobile phones, etc.

WARNING:Turntables CAN NOT be directly connected to this unit, because

eSAM702 has no RIAA preamp equipped input.

OUTPUTS

The eSAM702 has a main stereo output (OUT L / OUT R), with electronically balanced

Euroblock connectors.

Connection is made according to the following diagram:

The mixer's main output level (OUTPUT VOL) must be set in order to avoid your system

power amp clipping indicators (CLIP) to be permanently lit. Only the most powerful lower

frequencies must light them.

Other connections on the back panel:

•AUX/REC output with a nominal output of 0dBV (10kload) and an extra gain

setting of +6dB, enabled by internal jumper (0dBV is the default position).

•L+R switch: convert output signals in a mono signal.

•MUTE remote control input: enabled by external dry contact closure. It allows

connection of fire detection systems and other safety devices that have to mute the

mixer by using this control signal. The mode of operation is "NO" (normally open).

STARTING UP

This is directly done via the POWER mains switch. Even is the power-up noise of

eSAM702 is minimal, we highly recommend to power up all equipment in the following

order: sound sources, mixing units, equalizer, processors and finally power amplifiers.

The power down sequence is the inverse of the power up one.

EQUALIZATION

The tone controls of the main output provide a ± 15dB gain/attenuation for each of the

bands, and their central operating frequencies are 100Hz, 2kHz and 10kHz. Given the

philosophy of this unit, the tone controls are designed to be adjusted with a screwdriver,

thereby preventing accidental manipulation during normal use.

VU-METER

The eSAM702 has a VU-meter to show the main mixing signal.

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 shields, when connected to the chassis, must never be linked together. This will

avoid ground loops.

The eSAM702 mixer was designed to produce the lowest background noise.

Independently from the electronic design, the resulting background noise directly relies

on the correct use and installation of the mixing unit.

Adjust, where appropriate, the gain of each input for an adequate operating level and

then adjust the VOL controls on the front panel to obtain the desired input mix. Finally,

adjust the VOL control of the main mix output to get the relevant output volume for your

installation, and also enable the TK switches for priority inputs (a signal detection on

these priority inputs will attenuate the signal of non-priority inputs).

Important note on mix level adjustment: setting for example a channel VOL control to

"2" and the output VOL control to "10" is not the same as the opposite. In the first case,

the signal entering the mixing amplifier is weak, but even so it contains a background

noise, so the signal/noise ratio is low (low signal). When the output amplifier equally

amplifies both parts as a whole, the output has a very high background noise. In the

second case, as the channel VOL control is set to the maximum, the signal received by

the mixing amplifier has a high level and therefore also a high (good) signal/noise ratio,

so when this signal reaches the output VOL control and is amplified, the signal/noise

ratio remains better than in the previous case.

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.

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