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Page 1
The Krell Lossless Acoustic
Transducer (LAT) Series
are the first loudspeakers
engineered to Krells
exacting standards. They
are exceptional in their
ability to provide
accurate, high-powered
reproduction without the
distortions and informa-
tion loss that occur in
conventional loudspeaker
designs.
The Krell LAT Series fea-
tures 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/tweet-
er sub-enclosures, where
present, are also con-
structed of aluminum at
least
1/4-inch thick. The
cross-sectional shape of
the enclosure is deter-
mined by a custom alu-
minum extrusion, the
curvature of which is
designed to absolutely
minimize the effects of
internal standing waves
and external high-
frequency diffraction.
Such extensive use of
aluminum may seem
extravagant, but the sonic
benefits are undeniable.
Other than concrete and
lead, which are not prac-
tical choices, aluminum
possesses the ideal com-
bination of structural
rigidity and resonance
damping characteristics.
Within the audio pass-
band, 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 cor-
rect loudspeaker that
neither took any-
thing away from nor
added anything
superfluous to the
audio signal.
Achieving that goal,
nevertheless, took
Krell down an engi-
neering path never
before traveled in
the industry.
The sound is pure
Krell-as explosive,
delicate, and imme-
diate as music itself.
And its exactly what
youd expect of
Krells first loud-
speaker system.
LAT-1 Lossless Acoustic Transducer
Shown without grille.
Available in black or silver.
LATBro052102Final.gist 6/13/02 2:33 PM Page 2
Page 2
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.
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 resis-
tance, low inductance, and
high current handling .
1st-order network at 300 Hz
preserves transient response;
3rd-order Butterworth net-
work 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 diam-
eter. Individually potted
polypropylene WIMA capac-
itors are used in parallel to
minimize inductance and
resistance, and improve
current handling .
System impedance curve is
extremely smooth, and sen-
sitivity is a high 91 dB SPL at
1 meter with 1 W input.
Custom gold-plated brass
binding post terminals assure
optimum signal transfer.
1-inch (25 mm) tweeter delivers flat
response to 50 kHz. Central wave-
guide optimizes dispersion character-
istics.
5
3/4-inch (15 cm) midrange features
an advanced multifaceted cone that
eliminates colorations induced by res-
onance modes. A proprietary suspen-
sion and extended voice coil assure
extremely linear performance.
DAppolito midrange/tweeter configu-
ration places the acoustic center at
ear level and ensures pinpoint-
accurate stereo imaging .
Custom-designed 8-inch (21 cm)
woofer has extremely low free air res-
onance, a composite carbon fiber
cone, and a butyl surround. The long-
excursion 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 3