KV2 Audio SL2.15 - Manual (Page 14)

Mid/High horn design
The SL412 features a mid/high
integrated horn design with a
number of unique features. The
horn design is based on constant
directivity geometry with an
emphasis on maintaining low
transducer compression ratios, high
output and wide dispersion (110° 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 precision phase plug.
Heat-resistant midrange
Midrange requencies between
450Hz and 2.2kHz are reproduced
by an eight-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
Trans Coil 3” 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 SL412 midrange dissipa-
tes heat passively through the use
of a massive aluminum heat sink.
When combined with the SL3000
amplifier unit control electronics,
the system provides high output
levels safely and consistently over
infinite periods of time and dramati-
cally reducing heat associated
transducer problems such as power
compression and decreased
dynamics.
Neodymium mid-bass transducer
The SL412 features a four
twelve-inch neodymium mid-bass
speakers 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
SL412.
The SL412 mid-bass transducers
reproduces frequencies from 60Hz
to 450Hz. Used mid-bass transdu-
cers are 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 SL412 is the ultimate, nice
looking enclosure featuring a
number of ergonomically designed
components that make it a light,
small, and easy speaker to set up
and use.
KV2 designed and tooled new
cabinet handles for use in their
products. The two side handles
make it easy to pick up and repositi-
on the SL412 in a natural, instinctive
manner.
There are four industrial grade,
internal braces placed at each
corner and one internal brace on the
back. Corner braces are held in
places by four M6 and two M10
bolts, the back brace is held by two
M6 and one M10, providing a wide
range of installation and suspension
flexibility.
The SL412 is a 3-way high output,
active-driven, wide dispersion
loudspeaker module. It is designed
as part of a sound reinforcement
speaker system that includes the
SL3000 system control and amplifi-
cation system.
The SL412 Loudspeaker system
benefits from being designed
exclusively to operate above 60 Hz.
By optimizing the ideal operating
band pass of each system compo-
nent, the SL412 can achieve
extremely high output levels
consistently and safely.
Active-driven by the SL3000 unit
Power, electronic crossovers,
phase alignment, equalization, time
correction and speaker protection
are provided within the SL3000 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 SL412 and
SL3000 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 SL412
components. The compression
driver is a 3-inch nitride-titanium
diaphragm design, featuring a
complex geometry phase plug that
dramatically lowers distortion,
eliminates ring modes and provides
clearer, ripple free performance.
SL412 rear panel (cable connection to SL3000 unit Amplifi er/Controller)
Technology
SL412
Technology
14