The LAT Series and MRS

The LAT Series and MRS
LATBro052102Final.gist 6/13/02 2:32 PM Page 1
LATBro052102Final.gist 6/13/02 2:33 PM Page 2
LAT-1
Lossless Acoustic Transducer
The Krell Lossless Acoustic
Transducer (LAT) Series
are the first loudspeakers
engineered to Krell’s
exacting standards. They
are exceptional in their
ability to provide
accurate, high-powered
reproduction without the
distortions and information loss that occur in
conventional loudspeaker
designs.
The Krell LAT Series features massive aluminum
construction. (The LAT-1
weighs approximately
250 lb.) The enclosures
range from 0.75 to 1.5
inches in wall thickness.
Internal midrange/tweeter sub-enclosures, where
present, are also constructed of aluminum at
least 1/4-inch thick. The
cross-sectional shape of
the enclosure is determined by a custom aluminum extrusion, the
curvature of which is
designed to absolutely
minimize the effects of
internal standing waves
and external highfrequency diffraction.
Such extensive use of
aluminum may seem
extravagant, but the sonic
benefits are undeniable.
Other than concrete and
lead, which are not practical choices, aluminum
possesses the ideal combination of structural
rigidity and resonance
damping characteristics.
Within the audio passband, Krell LAT cabinets
are sonically inert—
something that cannot be
said about any wood or
wood derivative.
There is nothing
“mystical” about the
design of the Krell
Lossless Acoustic
Transducer. The goal
was to design a
mathematically correct loudspeaker that
neither took anything away from nor
added anything
superfluous to the
audio signal.
Achieving that goal,
nevertheless, took
Krell down an engineering path never
before traveled in
the industry.
The sound is pure
Krell—as explosive,
delicate, and immediate as music itself.
And it’s exactly what
you’d expect of
Krell’s first loudspeaker system.
Shown without grille.
Available in black or silver.
LATBro052102Final.gist 6/13/02 2:33 PM Page 3
The development of the Krell Lossless
Acoustic Transducer LAT-1 was, at once,
necessitated and made possible by the
Krell CAST™
—Current Audio Signal
Transmission—technology. The LAT-1 is
uniquely capable of reproducing the
pure, exceptionally high resolution,
wide-bandwidth signal delivered by Krell
CAST components.
1-inch (25 mm) tweeter delivers flat
response to 50 kHz. Central waveguide optimizes dispersion characteristics.
Separate crossover network
assemblies are used for each
driver complement (low,
mid, and high). All circuitry
is on 1/8-inch thick glass
epoxy circuit boards with
4 oz. copper traces, ensuring
low microphonics, low resistance, low inductance, and
high current handling.
1st-order network at 300 Hz
preserves transient response;
3rd-order Butterworth network at 2.9 kHz optimizes
power response.
Network inductors are all
air-core pure copper
designs, the largest of which
is formed of 10-gauge wire,
measuring 5 inches in diameter. Individually potted
polypropylene WIMA capacitors are used in parallel to
minimize inductance and
resistance, and improve
current handling.
System impedance curve is
extremely smooth, and sensitivity is a high 91 dB SPL at
1 meter with 1 W input.
Custom gold-plated brass
binding post terminals assure
optimum signal transfer.
53/4-inch (15 cm) midrange features
an advanced multifaceted cone that
eliminates colorations induced by resonance modes. A proprietary suspension and extended voice coil assure
extremely linear performance.
D’Appolito midrange/tweeter configuration places the acoustic center at
ear level and ensures pinpointaccurate stereo imaging.
Custom-designed 8-inch (21 cm)
woofer has extremely low free air resonance, a composite carbon fiber
cone, and a butyl surround. The longexcursion design (1-inch peak to
peak) is optimized for vented cabinet
performance.
Both the midrange and woofer
employ cast magnesium-aluminum
frames and are video shielded.
LATBro052102Final.gist 6/13/02 2:33 PM Page 4
LAT-2
Lossless Acoustic Transducer
The LAT-2 is a 2-way
system based on the
same design principles
that distinguish the Krell
Lossless Acoustic
Transducer concept.
Sophisticated engineering and uncompromised
construction result in
dynamic, transparent,
uncannily accurate
sound reproduction
rarely achieved in any
speaker, regardless of
size or the number of
drivers.
The 7-inch (18 cm) midbass drive unit features the
same multifaceted cone
construction and proprietary suspension design as
the midrange units in the
LAT-1. This advanced driver design simultaneously
ensures extraordinary bass
reproduction and
midrange accuracy.
The tweeter is identical to
the unit used in the LAT-1.
The LAT-2’s vented cabinet
features two rear bass ports,
precisely dimensioned and
positioned with respect to
the woofer to eliminate turbulence while providing the
correct acoustic loading.
2nd-order Bessel crossover
preserves phase coherence
and optimizes power
response. The optional
stands are constructed from
a carbon fiber composite
and are acoustically and
aesthetically matched to the
LAT-2.
Shown without grille and with optional stands.
Available in black or silver.
LATBro052102Final.gist 6/13/02 2:33 PM Page 5
LAT-C
Lossless Acoustic Transducer
A 3-way center-channel loudspeaker, the LAT-C features
two 8-inch woofers, two 5.75-inch midranges, and one
1-inch tweeter. Voiced to be a perfect match for the
LAT-1, the LAT-C features driver configuration and
crossover design that are optimized to deliver the best
acoustic performance from horizontal placement.
The all-aluminum cabinet is a sealed enclosure design. Therefore, the woofers—which
are otherwise identical to those used in the
LAT-1—are optimized for sealed box performance. All drive units are video shielded.
A solid aluminum multi-position
floor stand is included.
Shown without grille.
Available in black or silver.
A perfect Krell music system: the KAV-280cd
Compact Disc Player, KAV-300iL Integrated
Amplifier, and LAT-2 Lossless Acoustic
Transducers—a treat for the eyes and a feast
for the ears.
LATBro052102Final.gist 6/13/02 2:34 PM Page 6
MRS
Master Reference Subwoofer
What happens when Krell unleashes the full force of
its world-renowned audio engineering capabilities
and its no-compromise approach to product design
to the development of a reference subwoofer for
music and cinema?
What happens is the Krell MRS—Master Reference
Subwoofer.
Equipped with specially
designed dual 15-inch
woofers—each capable of an
astounding 3-inch cone excursion—-and an advanced,
application-specific 2600 W
Krell amplifier, the Master
Reference Subwoofer can produce hurricane-like air movement and extraordinary
acoustic output.
It is capable of a staggering
120 dB sound pressure level
output at 20 Hz. Link up to
four Master Reference
Subwoofers together for lowfrequency performance that is
beyond all understanding.
LATBro052102Final.gist 6/13/02 2:34 PM Page 7
A fully programmable digitally-controlled active crossover
ensures seamless integration between the Master
Reference Subwoofer and the main loudspeakers.
Powerful Krell software controls the simultaneous connection of conventional and LFE inputs for maximum
subwoofer performance in music and home theater systems. Up to five user-definable settings for filter parameters—such as slope, type, and frequency—can be
retained in memory.
An advanced comparator circuit for input-synchronous driver control eliminates the performance limitations of conventional negative
feedback servo systems.
In addition to conventional
balanced and single-ended
connections, the Master
Reference Subwoofer is
equipped with the Krell
CAST™
—Current Audio Signal
Transmission—interface,
which delivers the most
accurate analog signal transfer
between components.
Supporting such prodigious bass output is a
massive chassis constructed of 1-inch-thick
aluminum with 2-inch-thick speaker baffles.
Weighing 400 pounds, this ultra-rigid cabinet
ensures the purest low-frequency reproduction, totally free of typical coloration problems caused by resonance and vibration.
The chassis features a high-precision diamond-cut finish, which preserves the natural
beauty of the aluminum while providing a
distinctive appearance that blends elegantly
with interior decor.
LATBro052102Final.gist 6/13/02 2:34 PM Page 8
Specifications
The LAT Series and MRS: Redefining the Science of Loudspeaker Design
LAT-1
Type:
Enclosure Type:
Drivers:
Recommended
Amplifier Power:
Peak Output:
Technical Features:
Frequency Response:
Sensitivity:
Nominal Impedance:
Finish:
Dimensions (WxHxD):
Weight:
LAT-C
3-way floorstanding loudpeaker
Bass reflex
Three custom-built 8” woofers with carbonfiber/paper composite cones
Two high-excursion 5.75” midrange units
with multifaceted cone/dustcap assemblies
One 1” dual-concentric-ring tweeter with
integral waveguide
200 W or greater
120 dB SPL
Solid aluminum enclosure varying in thickness from .75”–1.5” with non-parallel sides
and rigid aluminum internal sub-enclosure
for midrange-tweeter module
35–25,000 Hz ±3 dB
91 dB SPL with 2.83 V input at 1 M
4 ohms
Available in either black or silver
14.7 x 54.6 x 14.7 in.
37.3 x 138.7 x 37.3 cm
250 lb. • 113.6 kg
Enclosure Type:
Drivers:
Recommended
Amplifier Power:
Peak Output:
Technical Features:
Frequency Response:
Sensitivity:
Nominal Impedance:
Finish:
Dimensions (WxHxD):
Weight:
Optional Stand – Height:
Recommended
Amplifier Power:
Peak Output:
Technical Features:
Frequency Response:
Sensitivity:
Nominal Impedance:
Finish:
Dimensions (WxHxD):*
Weight:
3-way center channel loudpeaker
Acoustic suspension
Two custom-built 8” woofers with carbonfiber/paper composite cones
Two high-excursion 5.75” midrange units
with multifaceted cone/dustcap assemblies
One 1” dual-concentric-ring tweeter with
integral waveguide
100 W or greater
117 dB SPL
Solid aluminum enclosure varying in thickness from .75”–1.5” with non-parallel sides;
rigid aluminum internal sub-enclosure for
midrange-tweeter module; integral
adjustable speaker stand
50–25,000 Hz ±3 dB
89 dB SPL with 2.83 V input at 1 M
4 ohms
Available in either black or silver
40.9 x 16.0 x 17.0 in. • 104.0 x 40.6 x 43.2 cm
200 lb. • 91.0 kg
Master Reference Subwoofer
LAT-2
Type:
Type:
Enclosure Type:
Drivers:
2-way bookshelf loudspeaker with optional
stand
Bass reflex
One high-excursion 7” woofer with multifaceted cone/dustcap assembly
One 1” dual-concentric-ring tweeter with
integral waveguide
100–350 W
110 dB SPL
Solid aluminum enclosure varying in thickness from .75”–1.0” with non-parallel sides
45–25,000 Hz ±3 dB
87 dB SPL with 2.83 V input at 1 M
6 ohms
Available in either black or silver
10.4 x 14.0 x 14.0 in.
26.4 x 35.6 x 35.6 cm
75 lb. • 34.1 kg
34 in. • 86.4 cm
All operational features, functions, specifications, and policies are subject to change without notification.
*LAT-C dimensions include stand.
Type:
Enclosure Type:
Drivers:
Power Amplifier:
Peak Output:
Technical Features:
Digital Crossover Controls:
Profile Type:
Slope:
High-Pass
Low-Pass
Frequency:
Level:
Powered subwoofer
Acoustic suspension
Two custom-built 15” woofers with 3”
peak-to-peak excursion
Purpose-built Krell 2600 W amplifier
Greater than 120 dB SPL
1”-thick solid aluminum enclosure for
entire chassis with 2”-thick baffles
Independently selectable parameters for
low-pass and high-pass
Bessel, Butterworth, or Linkwitz-Riley
Adjustable in 6 dB increments from
6 to 24 dB/octave
Adjustable in 6 dB increments from
6 to 48 dB/octave
Adjustable in 10 Hz increments from
30 to 100 Hz
Adjustable in 1 dB increments ±6 dB
Inputs:
One set each—balanced, single-ended,
CAST,™and LFE
Outputs:
One set each—balanced, single-ended,
CAST high-pass, and bypass
User Features:
Fully user-configurable crossover adjustments for slope, frequency, level, and filter
type assignable to five memory presets
Remote Control:
1 handheld wireless unit, Krell Link in/out,
12 VDC (12 V trigger) in/out, 12 VDC LFE
in, RC-5 in, bidirectional RS-232
20–100 Hz ±0.6 dB; -3 dB at 14 Hz
Black; silver available by special order
18.8 x 20.1 x 28.5 in. • 47.8 x 51.1 x 72.4 cm
400 lb. • 181.8 kg
Frequency Response:
Finish:
Dimensions (WxHxD):
Weight:
Krell Industries, Inc. • 45 Connair Road • Orange, CT 06477-3650 USA • Tel: 203-799-9954 • Corp. Fax: 203-799-9796
Sales Fax: 203-891-2028 • E-mail: [email protected] • Web site: www.krellonline.com
“Krell” is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell Industries, Inc., its subsidiaries, and authorized agents. “CAST” is a trademark of Krell Industries, Inc. All other trademarks
and trade names are properties of their respective owners. ©2002 Krell Industries, Inc. All rights reserved.
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