User`s manual

3
INTRODUCTION
The variant 25A incorporate two Class AB
amplifiers featuring electronically balanced signal
inputs and outputs. The AC input and output link
utilize Neutrik PowerCon® connectors which allow
up to 10 units to be daisy chained at 230 V.
A three position eq switch located on the
amplifier panel allows for array effect correction
(mid and low frequencies sum in phase when
several units are assembled). This switch provides
two additional equalizations to adjust the high
frequency range.
The variant 18A incorporates one 1250 W
(continuous) Class D amplifier along with the
necessary signal treatment to perform as a sub-
woofer unit. This amplifier features a high pass
filtered output at 138 Hz intended to provide signal
for the variant 25A units.
The variant 112A incorporates a two way
amplifier with a Class D power module of 500W
(continuos) for the low range, and a Class AB
power module of 100W (continuos) for the high
frequency range. The AC input and output link
utilize Neutrik PowerCon® connectors which allow
up to 6 units to be daisy chained at 230 V.
A three position eq switch located on the
amplifier panel allows for array effect correction
(mid and low frequencies sum in phase when
several units are assembled). This switch provides
two additional equalizations to adjust the high
frequency range.
The new D.A.S. Variant series was designed for
use in fixed installations, portable A/V, or
applications requiring high SPL and control of the
vertical coverage. The series comprises three
models, the variant 25A which features two 5”
speakers for mid-low frequencies and one
compression driver (2” voice coil and 1” exit)
coupled to a serpis-25 plane wave generator for
the high frequencies. The variant 25A model can be
used alone as a frontfill or under balcony unit for
voice reproduction. The second model is the
variant 18A bass system intended to be used in
combination with the variant 25A for applications
requiring extension of the low frequency range
below 90 Hz. The third system is the variant 112A
which has more efficiency and also bigger power
handling. It is a two way active cabinet including a
12” speaker (with 3” voice coil diameter) to
reproduce the low mid range (down to 63Hz) and
two neodymium compression drivers ( 2” voice coil
diameter) coupled to the serpis-112 horn to
reproduce the high frequency range. The serpis-
112 horn assures a nominal vertical coverage of
15º of the high frequency section.
All units are manufactured using 10/15mm
Finnish Birch plywood. The variant 25A/112A
enclosures´ shape is trapezoidal with 7.5º angles.
The variant 18A unit is rectangular. All enclosures
feature a rugged, weather resistant, polyurethane
black paint and incorporate stainless steel and
aluminum captive rigging hardware which is
designed to provide fast, simple and safe rigging
by means of quick release safety pins. Splay
angles can be changed from 0º to 10º in 1º
increments. The variant 112A is a curved source
system so the number of splay angles is restricted.
The components used in the system feature
advanced technologies; new T.A.F. (Total Air Flow)
cooling systems, neodymium magnets which allow
for important weight reductions, titanium
diaphragms for the high frequency sections, and
low-mid frequency cones manufactured using
crossed fibers and elastic suspension that provide
exceptional stability in the vertical plane.
For mid-low frequencies, the variant 25A
incorporates two 5B 5” speakers with 1” voice coil
and ferrite magnet assemblies in a bass-reflex
configuration. High frequencies are handled by one
M-5N compression driver with 2” voice coil,
neodymium magnet and 1” exit coupled to one
serpis-25 plane wave adapter/high frequency horn
assembly designed by D.A.S. Audio. In order to
maintain coherent horizontal dispersion one of the
5” speakers features a low pass filter, avoiding
destructive interference between the 5” speakers
in the mid frequency range.
The variant 18A model includes one 18H 18”
speaker with 4” voice coil and neodymium magnet
assembly in a bass-reflex configuration. It can be
flown above the mid-high units or as an
independent cluster.
Manual del Usuario / variant / User’s Manual