Ecler DPC7000D Notice D'utilisation page 6

DIRECT RADIATION WITH TWIN SYSTEMS
Very high radiation levels can be achieved with this method, which consists of mounting two
identical drivers into the same enclosure. The drivers need to be perfectly matched in their
characteristics, as otherwise unwanted mutual loading may develop. This technique represents a 3dB
radiation increment in comparison to single driver configurations.
Both 15'' (38,1cm) speakers feature 100mm voice coils and withstand maximum excursion up to
4mm. For the high-frequency way, a neodymium motor has been used along with a 2'' ferrofluid voice
coil and a titanium diaphragm coupled to a plastic-moulded antiresonant constant-directivity "phase plug"
diffusor. These pieces are placed between the diaphragm and the horn throat, avoiding cancellation of
certain critical frequencies. The high frequency driver is mounted in d'Appolito configuration, i.e. placed
between the two 15'' speakers.
ACOUSTIC ENCLOSURES
Wood and construction
If the employed components represent 51% of the success of an acoustic system, the remaining
49% belongs to the acoustic enclosure and its construction. The plywood panels used on the DPC is
very stiff and light. The boxes feature braces which minimize coloration caused by surface vibration.
Constructed with 15mm plywood, the midrange and high-frequency cabinets include a wooden ring
inside the box which snugly fits around the tweeter motor thus reinforcing its subjection and protecting
the diffusor from possible impacts or vibrations. Its trapezoidal shape has a 6° angle on each side. The
low frequency cabinet is built from 18mm birch plywood. Both enclosures feature inset handles to make
transporting and handling easier.
Absorbers
Inside the box, stationary waves can originate and affect the sound purity. One way to minimize
this effect is to use absorbers. DPC cabinets use antiallergic, oncologically inoffensive synthetic fibre
glued onto the inner box walls.
Painting
A new resin-based chemical component provides a high durability treating, being scratch and
bump resistant.
Hardware
The loudspeakers are protected with a foam-covered metal grille (foam on inside), preserving
them from dust and splashings. This assembly is solidly attached to the enclosure with screws. The
midrange and high frequency cabinets feature two adjustable fittings on the top and bottom side which
allow the use of a flying suspension system. (see 3.2)
Preinstalled fittings for mounting most wheel types found on the market. (See paragraph 3.3)
Connection panel with SPEAKON® connectors.
VERSIONS AND ACCESSORIES
Apart from the basic version consisting of acoustic cabinets, amplifiers and the processor unit, a
complementary version is available for upgrading purposes: The DPC7000 PC/DC. The only difference
lies in the fact that this version does not include the DP300 processor, as bigger systems need just one
of these units.
It is also possible to fit all system electronics into a flight case (ref EPC FL). 10m connection
cables are included apart from the internal wiring and connection panel.
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