KV2 Audio ESR212 - Manual (Page 14)

ESR212 rear panel (cable connection to ESR2800 unit Amplifi er/Controller)
Technology
ESR212
Technology
14
Exclusive KV2 rotatable horn
design for maximum flexibility
The ESR212 features a mid/high
integrated horn design with a
number of unique features. First, the
horn can be rotated 90˚, allowing
for complete flexibility in selection
of vertical, horizontal system set up.
The horn design is based on
constant-directivity geometry with
an emphasis on maintaining low
transducer compression ratios, high
output and wide dispersion (90˚ x
40˚). The midrange speaker is fixed
to a large aluminum heat sink which
is attached to a precisely designed
midrange “chamber”. The combina-
tion provides optimal cone loading
and heat dissipation. Further
loading and dispersion is controlled
through a 2.28” (58mm) precision
phase plug.
Heat-resistant midrange
Midrange frequencies between
500Hz and 2.5kHz are reproduced
by a six-inch midrange speaker that
provides 106 dB of sensitivity
(1 watt / 1 meter) when coupled
with the integrated horn. The
magnetic motor assembly features a
high temperature 1.75” (44mm)
diameter voice coil assembly and
extensive use of neodymium.
Because of the limited linear
movement of most midrange
transducers - usually 2-3mm -
ventilation of the voice coil assemb-
ly and magnetic structure is poor
and failure rate from heat fatigue is
high. The ESR212 midrange dissipa-
tes heat passively through the use
of a massive aluminum heat sink.
When combined with the ESR2800
unit control electronics, the system
provides high output levels safely
and consistently over infinite
periods of time and dramatically
reducing heat associated transducer
problems such as power compressi-
on and decreased dynamics.
Neodymium bass transducer
The ESR212 features a
twelve-inch neodymium bass
speaker with front loaded bass
reflex design. It is important to note
that neodymium is not a transducer
panacea, as it cannot safely operate
at the same typical operating
temperatures ferrite does. Using
neodymium requires a profound
understanding of material science
and finite element analysis to
properly design a stable, high force
magnetic structure that functions
correctly. 18 Sound and KV2 audio
engineering jointly designed the
twelve-inch mid bass driver for the
ESR212.
The ESR212 bass transducer
reproduces frequencies from 38Hz
to 500Hz. The bass transducer is
very precise and fast with high
sensitivity. The high efficiency
neodymium motor provides an
extraordinary amount of force that
delivers complete control of the
cone mass and a high overall
weight loss.
Easy to set up
The ESR212 is an aesthetically
pleasing - looking enclosure
featuring a number of ergonomical-
ly designed components that make
it a light, small, and easy speaker to
set up and use.
ESR212 features the two top
handles for pick up and reposition.
There are six industrial grade,
internal braces placed at each
corner and one internal brace on
the back. Corner braces are held in
places by two M10 bolts, the back
brace is held by two M6 and one
M10, providing a wide range of
installation and suspension flexibili-
ty.
The ESR212 is a 3-way high output,
active-driven, full range Loudspea-
ker module. It is designed as part of
a sound reinforcement speaker
system that includes the ESR2800
system control and amplification
system.
The ESR212 Loudspeaker
system benefits from being
designed exclusively to operate
above 40 Hz. By optimizing the ideal
operating band pass of each system
component, the ESR212 can achieve
extremely high output levels
consistently and safely.
Active-driven by the ESR2800 unit
Power, electronic crossovers,
phase alignment, equalization, time
correction and speaker protection
are provided within the ESR2800
unit.
This “one plug in, one-plug-out”
system ensures fast, easy set up and
complete control. It gives you the
benefits of active sound reinforce-
ment technology, yet locates the
electronics in an easy-access
rackmount module.
Together, the ESR212 and
ESR2800 unit deliver the highest
dynamic range of any system
currently available, providing new
levels of clarity, depth and resoluti-
on.
Advanced compression driver
KV2 Audio’s transducer partner,
18 Sound in Cavriago, Italy, manu-
factures and co-develops all ESR212
components. The compression
driver is a 1.75-inch nitride-titanium
diaphragm design, featuring a
complex geometry phase plug that
dramatically lowers distortion,
eliminates ring modes and provides
clearer, ripple free performance.