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1. IMPORTANT REMARK
We thank you for trusting in us and choosing our DLA600B adaption unit. In order to get the optimum
operation and efficiency from this unit, it is VERY IMPORTANT - before you plug anything - to read this manual
very carefully and bear in mind all considerations specified within it.
We strongly recommend that its maintenance be carried out by our Authorised Technical services.
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 shafts with any kind of material.
There are no user serviceable parts inside the unit.
INTRODUCTION
The use of a 70V / 100V loudspeaker distribution system responds to the necessity of a flexible system
that firstly allows the simultaneous use of different types of loudspeakers with different impedances, power
handlings, etc. and secondly minimises the power loss caused by the conductor resistance in long cable runs.
Basically, the system uses transformers to adapt each loudspeaker to the 70V / 100V line. These line
voltages are achieved either with high output power amplifiers (e.g. 1250 @ 8
) or with smaller power
amplifiers followed by an output transformer.
In order to use conventional medium-sized power amplifiers in 70V /100V lines (e.g. hotels, factories,
train stations, bus terminals, stores, supermarkets, parks, streets… ) it is required to place an intermediate unit
between the amplifier’s output and the loudspeaker line. The DLA600B fulfils this task and offers exceptional
flexibility thanks to its two independent channels for 100V and 70V outputs.
The DLA600B intermediate unit complements ECLERs power amplifiers MPA4-80, MPA6-80, MPA4-
150, MPA4-400 and APA600, although it’s perfectly suited for other amplifiers with similar characteristics.
INSTALLATION TIPS
As in many other systems, it’s highly recommended not to reduce the total load impedance below the
minimum admissible impedance. The usual procedure for calculating the maximum number of loudspeakers
that a given line can bear, is to sum the power handling of all loudspeakers and check that this sum is not bigger
than the maximum output power of the amplifier.
For the previous statement to be true, and to ensure a trouble-free operation of the power amplifier,
loudspeakers should be of the highest affordable quality and be installed correctly.
To guarantee an optimum performance of the DLA600B, the output power of the amplifier should be as
similar as possible to the selected input power on the DLA600B.
If the output power of the amplifier does not match any of the 3 options on the DLA600B, set in to the
higher rated input selection. For example, if you have a 200W amplifier, you should choose the 300W input
setting on the DLA600B.
Keep in mind that if these power figures do not match, the output voltage of the DLA600B will not be
exactly 100V or 70V.
If you use a higher output power on a lower rated DLA600B configuration, you run the risk of saturating
the transformer and poor system performance.
Always refer to the indications printed on the panel when connecting the inputs and outputs to the
DLA600B. These indications are reproduced at the end of this manual together with two installation examples.
The DLA600B features lateral rack ears that allow, thanks to its standard 19’’ width (482.6 mm) and 1
unit height (44mm), installation in normalized rack furniture.
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 unit.
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.
