Krell The-Lat-2005 Owners Reference

LAT

THE LAT SERIES

LOSSLESS ACOUSTIC

TRANSDUCERS

OWNER’S REFERENCE

The LAT Series
Lossless Acoustic Transducers
Owner’s Reference, v05.0

Krell Industries, Inc.
45 Connair Road
Orange, CT 06477-3650 USA

TEL [phone]
FAX [phone]
E-MAIL [e-mail]
WEBSITE http://www.krellonline.com

This product complies with the EMC directive (89/336/EEC) and the low-voltage directive
(73/23/EEC).

This product is manufactured in the United States of America. Krell®is a registered trademark of Krell Industries, Inc., and is restricted for use by

ell Industries, Inc., its subsidiaries, and authorized agents. Kr

Kr

ved. All other trademarks and tradenames ar

eser

r

e r

egister

ed to their r

™

ell HEAT

, Kr

espective companies.

ellHEAT

™

, and LA

™

T

e trademarks of Kr

ar

ell Industries, Inc. All rights

© 2005 by Krell Industries, Inc. All rights reserved P/N 307595-W

Contents

List of Illustrations, page iv

Foreword, page v

A Letter from Dan D’Agostino, page 1

SECTION ONE: About Krell, page 2

The Krell Legacy, Ensuring Maximum Performance,
and Definition of T

SECTION TWO: Unpacking and Placement, page 7

Opening the LAT–1000 and the LAT–C1000 Shipping Crate
Opening the LAT–

Attaching and Detaching the Loudspeaker Grille

SECTION THREE: Anatomy of a Loudspeaker, page 14

Features and Benefits of the LAT Design

SECTION FOUR: Connecting a LAT Series Loudspeaker to Your System, page 22

erms

2000 Shipping Box

SECTION FIVE: Kr

WARRANTY, page 24

RETURN AUTHORIZATION PROCEDURE, page 26

ellHEAT: Home Theater Technology, page 23

iii

List of Illustrations

Figure 1, page 14

LAT–1000 Front Panel and Grille,
Back Panel, Tuned Port, Enclosure, Crossovers

Figure 2, page 16

LAT–2000 Front Panel and Grille,
Tuned Ports, Crossover, Back Panel

Figure 3, page 18

LAT–C1000 Front Panel and Grille, Back Panel,
Enclosure, Crossovers, Leg Assembly and Pivot Mechanism

iv

Foreword

For more than 25 years, Krell components have been the choice of discerning
audiophiles all over the world. Krell customers care deeply about music, and they
demand the most lifelike music reproduction possible. Krell Industries, Inc., was
founded and exists to meet the expectations of those listeners.

Loudspeakers are an integral link in an audio system. With the right loudspeakers,
you hear music with its original definition, precision, and clarity. Krell’s lossless
technology combines the benefits of enclosure design, materials selection, and
electronics design and configuration to ensure that you hear music exactly as it
was recorded—nothing more, nothing less.

With the Lossless Acoustic Transducers (LATs), Krell has achieved its goal: loud­speakers that are uniquely capable of delivering music with the same confidence
and accuracy as other legendary Krell components.

v

A Letter from Dan D’Agostino

Dear Audio Enthusiast,

Thank you for your purchase of the Lossless Acoustic Transducer.

For more than thirty years, I have been designing audio components for audio­philes who share my passion for music and its reproduction. Krell Industries, Inc.
is a viable, dynamic company, with dealers and distributors worldwide, as a result
of my ongoing quest to build the best, most refined audio products available. This
quest has driven me towards a “systems approach”, and the development of the
Lossless Acoustic Transducer (LAT) Series of loudspeakers is an important part of
that approach. Only through the design of complete systems can I insure that
every component meets my standard of excellence.

It is a goal of mine for Krell loudspeakers to enhance your life visually as well as
sonically, and the new LAT–1000, LAT–2000, and LAT–C1000 deliver both excep­tional performance and style. Provocative aluminum cabinetry, together with
advanced driver and crossover technologies yield loudspeakers of extraordinary
capability, providing the listener with a fresh experience of his favorite musical per­formances. Combine these loudspeakers with my Evolution One monaural amplifi­er and Evolution Two preamplifier, and discover a system that exceeds my expec­tations.

I want to share an exciting new direction with you. Work on the Evolution source
under the systems approach at Krell is ongoing, as of this writing. This exceptional
player clearly demonstrates the advantages of the latest audio recording formats,
while elevating traditional compact disc performance to a new level. I urge you to
experience it, when it is released.

My passion for music reproduction and high performance is the passion that
forged Krell Industries, Inc. and sustains me to this day. It is my love of music, art,
and science that informs all my design efforts, and drives me toward great prod­ucts such as the LAT Series of loudspeakers. Thank you for your appreciation of
my life’s work, and for choosing Krell.

Sincerely,

Daniel D’Agostino
Chief Executive Officer

1

SECTION ONE

About Krell

This section describes the Krell Legacy, Krell’s innovative loudspeaker design and
technology, and defines key terms used in this reference.

The Krell Legacy

“I design every Krell component to set the standard

for workmanship, style, and performance.”

High-end audio is a demanding pursuit—an ongoing quest for excellence in
music reproduction that drives equipment manufacturers to strive for the absolute
in design and performance. With a keen understanding of this passionate drive,
Krell Industries, Inc., was founded in 1980.

Over the past 2-1/2 decades, Krell has earned a distinguished reputation for engi­neering innovation and product excellence. The company’s history is replete with
product introductions that have deeply impacted the high-end audio industry. The
most discriminating audiophiles and product reviewers have consistently recog­nized Krell components for standard-setting performance.

Dan D’Agostino

The Lossless Acoustic Transducers (LATs) herald the era of loudspeaker design and
manufacture at Krell Industries, joining the legacy of amplifiers for which Krell is

enowned. For over 25 years, Krell C.E.O. Dan D’Agostino has built amplifiers

r
legendary for their ability to deliver optimum performance for any loudspeaker.
This experience has yielded invaluable insights about the natur
design, which Kr

ell has characteristically incorporated into the LA

The LAT Series of Loudspeakers

ence-caliber loudspeaker

–1000, a r

The LA
that r
made drivers, and a robust, high-power crossover—a loudspeaker capable of
handling the legendar
accuracy and r

T

emains sonically inert, with a baffle that absorbs vibrations and houses custom-

efer

y power of Kr

esolution.

loudspeaker

e of

T Series.

, employs an all-aluminum enclosure

ell amplifiers, while maintaining pin

point

2

The LAT– C1000 high performance center channel, is manufactured with all of
the crossover, enclosure, and driver technologies of the LAT–1000. Designed to be
operated as a full-range loudspeaker, the LAT–C1000 center channel loud­speaker perfectly complements the LAT–1000. Together, these loudspeakers
form the most extraordinary home theater loudspeaker system available.

The magnetic shielding and horizontal driver array of the LAT–C1000 allows for
ease of installation above or below a video screen. In addition, multiple locator
positions in the stand assembly allow for the optimal on-axis setup of the loud­speaker for almost all scenarios.

The LAT– 2000 is a vented two-way loudspeaker designed for a two-channel
system demanding high quality performance in a small space. This loudspeaker
is also the perfect complement to the LAT–1000 and LAT– C1000 loudspeakers
in a home theater system. Crossover, enclosure, and driver technologies used in
the LAT–1000 have been applied to the design of the LAT– 2000.

Unparalleled Sonic Performance

From the first Krell product—the KSA –100—to the present, Dan D’Agostino has
continually “pushed the envelope” of performance in his search for greater amplifier
power, and now, loudspeaker response. His exploration of technologies, driven by
his never-ending quest to elevate the standard of excellence, has resulted in break­through audio designs. Over the years, the Krell line of power amplifiers, including
benchmark products such as the KRS–100, KRS– 200, and the Audio Standard
models, has established a legacy of unparalleled sonic performance. The LAT
Series

brings the Kr

ell level of per

formance to the loudspeaker.

Dan D’Agostino remains committed to the development of new designs and
technologies. And the Krell legacy will continue to evolve with products that deliver
innovative engineering, per

fection in build quality

3

, and outstanding audio performance.

continue

d

(SECTION ONE: About Krell continued)

Ensuring Maximum Performance

The LAT-1000 extends the already impressive performance of the LAT-1 to a new
level. Building upon the foundation of solid aluminum cabinetry and high-current
crossover design that distinguished the LAT–1, the LAT–1000 frequency response
extends 1/3 octave lower than its predecessor. The LAT–1000, LAT– 2000 and
LAT–C1000 have improved midrange resolution, and enhanced high frequency
detail. All designs employ new drivers that featur
handling, and ver

y low distortion.

Innovative Loudspeaker Technology and Design

Crossover

The LAT–1000 and LAT–C1000 crossovers feature robust construction that
divides the circuit among three discrete circuit cards—one each for the woofer,
midrange, and tweeter networks. The LAT– 2000 loudspeaker has a two-way
crossover design, with the woofer and tweeter together on a single circuit board.
Each printed circuit board for a LAT loudspeaker is fashioned of 1/8-inch fiberglass
with 4-ounce copper traces for superior current flow. Air core inductors and
banks of potted WIMA capacitors ensure tight tolerances and high linearity during
high power levels.

e greater range, better power

Enclosure

Continuing in the tradition of the Master Reference Subwoofer, a LAT Series
loudspeaker enclosure is constructed entirely of aluminum. “Aluminum is the best
material for the job,” C.E.O. Dan D’Agostino explains. “Other than concrete and
lead, which are not practical choices, aluminum is the only material that possesses
the ideal combination of str
Within the audio passband, our cabinets are sonically inert—something you cannot
say about any wood or wood derivative.”

Kr
as purposeful as it is beautiful. Computer
wave interference. A rear-firing, tuned port on the LAT–1000 is precision machined.
A
sure that is immune to vibration. Articulating spikes allow the LAT–1000 to be pre-

uctural rigidity and r

s knowledge of aluminum extr

ell’

substantive aluminum baf

esonance damping characteristics.

usion technology has yielded an enclosur

-optimized geometry eliminates standing

ear plates, bottom, and top comprise an enclo

fle, r

e that is

-

4

cisely leveled for the most accurate imaging and reduced vibration. A special sub­enclosure in the LAT–1000 and LAT–C1000 houses the drivers for the midrange
and the tweeter. This computer-modeled, welded aluminum case effectively iso­lates the midrange and tweeter from the main enclosure while providing an ideal
operating environment for the midrange drivers.

The LAT–C1000 enclosure is fashioned out of solid aluminum billet and extru­sion, creating an operating environment for the drivers that is free of induced vibra­tions. The loudspeaker has a special advantage in the crucial midrange frequen­cies: it is optimized for dialogue, the single most important job of a center chan­nel speaker. The LAT–C1000 maintains the voice matching necessary to recreate
seamless multi-channel front staging. Heard through the LAT–C1000, dialogue is
natural sounding and clearly distinguishable from the rest of the audio program.

The LAT– 2000 construction is based on the same engineering principles that distin­guish the LAT–1000. The all-aluminum enclosure features wall thickness ranging
from 0.75 to 1.0 inch. The curvature of the cabinets is designed to absolutely mini­mize the effects of internal standing waves and external high-frequency diffraction.
The vented cabinet of the LAT– 2000 features two rear bass ports. The LAT–2000
ports are precisely dimensioned, flared, and positioned with respect to the woofer
to eliminate turbulence while providing the correct acoustical loading.

Drivers

The LAT–1000 and LAT–C1000 tweeters are a 1’” ring radiator design with a
machined aluminum faceplate and phase plug. The 5.25” midrange drivers fea­ture magnesium cones coupled to a rubber surround, and an injection molded
metal basket that is extr

emely rigid as well as acoustically transparent. The 8”
woofers are designed with low loss linear suspension and aluminum cones, and
a unique spider configuration dampens driver-born resonances. All drivers have
very high power handling characteristics.

The LAT–2000 tweeter is identical to the LAT–1000 tweeter. The 7” mid-bass driv­er features a sliced paper cone and, like the LAT–1000 woofer, has an injection
molded metal basket that is extr

emely rigid as well as acoustically transpar

ent. A

large motor promotes ample bass extension and midrange accuracy.

5

continue

d

SECTION ONE: About Krell continued)

(

Definition of Terms

Following are the definitions of key terms used in your owner’s reference manual.

Technology

KrellHEAT

Crossover

Krell HEAT, or High End Audio Theater, is a design application
incorporated into Krell components to enhance multi-channel
home entertainment systems. A

KrellHEAT system is an inte-

grated home theater system consisting of a state-of-the-art
Krell preamp/processor and matching amplifiers and loud­speakers that reproduce two-channel and multi-channel sources
with audiophile sound quality, placing listeners in the middle
of a lifelike environment.

The crossover consists of a dedicated circuit board for each
group of drive units (woofers, midranges, and tweeters). Each
crossover network employs impedance correction circuitry
that flattens impedance curves and damps the resonance of
the drive units it controls, allowing the filter circuits to operate
under nearly ideal conditions.

6

SECTION TWO

Unpacking and Placement

This section describes the procedures for safely unpacking and placing your Lossless
Acoustic Transducers (LATs).

Opening the LAT–1000 and the LAT– C1000 Shipping Crate

The LAT–1000. Each LAT–1000 shipping crate measures 24 in. (61 cm) wide by

61 in. (155 cm) high by 24 in. (61 cm) deep and contains one LAT–1000. The
combined weight of the crate and loudspeaker is approximately 340 lbs. (155 kg).
Each LAT–1000 loudspeaker measures 12.5 in. (31.8 cm) wide by 54.6 in. (138.7
cm) high by 14 in. (35.6 cm) deep with an estimated weight of 270 lbs. (122.7 kg).

The LAT–C1000. Each LAT– C1000 shipping crate measures 44.8 in. (113.8 cm)
wide by 28 in. (71.1 cm) high by 23.25 in. (59 cm) deep. The combined weight of
the crate and loudspeaker is approximately 300 lbs. (136.4 kg). Each LAT– C1000
loudspeaker measures 40.9 in. (103) cm wide by 12 in. (30.48 cm) high by 15 in.
(38.1 cm) deep with an estimated weight of 200 lbs. (90.9 kg).

Krell recommends that three to four people are needed to safely move the loud­speaker to its place in the listening area. Two people are needed to remove the
shipping crate top from its base.

The shipping crate is specially designed to open safely and easily. The LAT–1000
is enclosed in a protective sleeve and rests on the reinforced base of the crate,
and the crate top is fastened to the base with Phillips-head screws. The only
tool needed to remove the LAT from the crate is a Phillips screwdriver. See the

.

steps below to unpack the LA

T

To Remove the LAT–1000 or LAT–C1000 from the Shipping Crate

1. Locate the screws on the base of the shipping crate (two on each end and

three on each side). These screws are circled with black marker for easy
identification.

2. Completely r

1 person needed

emove all screws.

7

continued

SECTION TWO: Unpacking and Placement continued)

(

3. With one person grasping each end of the shipping crate, pull steadily straight

up. The crate top will slowly slide up and off. Set crate top aside.

2 people needed

The loudspeaker sits in a protective sleeve on the crate base. On top of the
loudspeaker is a wooden grille box that is shrink-wrapped.

A packet containing the Owner’s Reference and warranty card is affixed to the
top of the grille box.

4. Lift the grille box of

f the loudspeaker and set aside.

1 person needed

5. Carefully lift the loudspeaker out of the crate (do not remove the protective

sleeve at this time) and place it on the floor.

3-4 people needed

In the LAT–1000 grille box, with the grille, you will find:

4 stainless steel spikes

1 bubble level

2 binding post knobs

1-7/16 in. nut driver

In the LAT–C1000 grille box, with the grille, you will find:

2 shoulder scr

2 locator bolts

4 socket head cap screws

ews

2 binding post knobs

1-7/16 in. nut driver

Inside the LAT–C1000 crate, at the bottom, there are 2 cardboard boxes containing

loudspeaker foot and leg assembly and pivot mechanisms.

the

8

Opening the LAT–2000 Shipping Box

The LAT–2000. Each LAT–2000 shipping box measures 15.8 in. (40.1 cm) wide by

19.3 in. (49 cm) high by 20.3 in. (51.6 cm) deep. The combined weight of the ship­ping box and the loudspeaker is approximately 100 lbs. (45.5 kg). Each LAT–2
loudspeaker measures 10.5 in. (26.7 cm) wide by 14 in. (35.6 cm) high by 15.5 in.
(39.4 cm) deep with an estimated weight of 70 lbs. (31.8 kg).

The LAT–2000 is shipped with the loudspeaker grille installed.

To Remove the LAT– 2000 from the Shipping Box

The LAT–2000 shipping box includes a 2-part cardboard assembly: 1) an interior
cardboard box with flaps and 2) a cardboard cap which surrounds the interior box.

To open the shipping box easily and safely, follow these steps:

1. Position the box so that the box opening instructions are on the top.

2. Cut the 4 bands of plastic strapping that secure the shipping box.

3. Lift the cardboard cap straight up and off the shipping box, exposing the interior

cardboard box, a shallow box with generous flaps. The flaps are secured by
plastic strapping. A packet containing the Owner’s Reference and warranty card
is affixed to a top layer of foam packing.

4. Cut the band of plastic strapping and fold the flaps open.

5. Remove the top layer of foam packing, exposing the LAT–2000 in its protec-

tive sleeve, sur

r

ounded by foam packing.

6. Remove the foam packing by gently lifting the packing straight up and out of the

interior cardboard box. You now see the entire LAT–2000 in its protective
sleeve, positioned on a bottom layer of foam packing.

7. Lift the LAT–2000 out of the shipping box by grasping the base of the loud-

speaker sides. Avoid contact with the grille. Do not use the binding posts to

the loudspeaker

lift

Notes

The LAT–2000 weighs 70 pounds. It may be more convenient for two people to lift the

speaker out of the shipping box.

loud

.

9

continued

(SECTION TWO: Unpacking and Placement continued)

Placement

All loudspeakers interact with the environment in which they are placed. Loudspeaker
performance is influenced by the size, shape, and contents of the listening room as
well as the placement of the loudspeaker within the room.

Krell encourages you to experiment and find the loudspeaker placement that reflects
your personal preference. A Lossless Acoustic Transducer (LAT) is simple to set
up and use. Its unique solid aluminum enclosure produces a soundstage that is both
deep and wide, with little or no toe-in required. The closer a loudspeaker is to the
rear wall, the more pronounced the bass response. To minimize unwanted reflected
sound and maximize the width and depth of the soundstage, be careful not to set
the loudspeakers too close to the side walls.

3-4 people needed

When the loudspeakers are in position, you are ready to attach the loudspeaker
grille,

see page 11, install the spikes on the LAT–1000, or install the foot and leg

assembly and pivot mechanisms on the LAT–C1000,

see page 13.

10

(SECTION TWO: Unpacking and Placement continued)

To Attach the Loudspeaker Grille

Attach the grille to the loudspeaker before you play music. Each Lossless Acoustic
Transducer (LAT) is equipped with a snap-on grille, which consists of the grille
cord strung between two metal blocks. The grille is shipped in the accessory box
marked “grille”. To install the grille, follow these steps.

1. Grasp the grille blocks on each end of the grille, and lift the loudspeaker grille

out of the grille box.

2. On the LAT–1000 and LAT–2000 loudspeakers, position one grille block on the

bottom front of the loudspeaker.
On the LAT–C1000 loudspeaker, position one grille block on the left front of the

loudspeaker.

3. Gently guide the grille locator pins into the two grille holes on the bottom front

of the loudspeaker.
On the LAT–C1000 loudspeaker, position one grille block on the left front of the

loudspeaker.

4. Grasp the remaining grille block, allowing it to rest between the thumb and fore-

finger of each hand.

5. Pull firmly to stretch the grille cords, until the grille locator pins align with the

two holes on the top front of the loudspeaker.
On the LAT–C1000 loudspeaker, stretch the grille cords to the right.

6. Gently guide the pins into the grille holes. You hear a click when the grille is in

place.

11

continued

(SECTION TWO: Unpacking and Placement continued)

To Detach the Loudspeaker Grille

The loudspeaker grille remains in place while you play music. However, if you wish
to move the loudspeaker, first detach the loudspeaker grille.

1. Grasp the grille block attached to the top front of the loudspeaker.

On the LAT–C1000, grasp the grille block attached to the right side of the loud­speaker.

2. Gently pull the grille bar straight out, so that the grille locator pins slide out of

the grille holes.

3. Remove the grille block from the bottom front of the loudspeaker, by pulling it

straight out.
On the LAT–2000, remove the grill block attached to the left side of the loud-

speaker, by pulling it straight out.

4. To protect the grille, Krell recommends placing it back in the grille box until

you are ready to reinstall it.

Notes

Be careful not to scratch the surface of the loudspeaker with the grille locator pins.
Clean the grille periodically to remove accumulated dust. Gently wipe the grille from top to

bottom using a soft, dry, lint-free cloth. Do not use rubber conditioner or solvent.

12

To Install the Spikes on the LAT–1000

Each LAT–1000 is shipped with 4 stainless steel spikes: two rear articulating
spikes (with knob) and two (one long and one short) front stationary spikes (no
knob). Use these spikes to stabilize and level the loudspeaker. These spikes are
particularly important for sound quality if the loudspeaker will be placed on a
carpeted floor. The longer front spike is for deep-pile carpeting.

IMPORTANT

Do not install spikes until the loudspeaker has been placed in the listening area.

1. Insert the rear articulating spikes (with knobs) into the holes provided on the back

of the loudspeaker base.

2. Turn knobs by hand until they are secure (do not over-tighten).

3. Tilt the loudspeaker back just enough to insert the front stationary spike (no knob).

IMPORTANT

Two people are needed to safely tilt the loudspeaker to install the front stationary
spike.

4. Turn the front spike by hand until it is secure (do not over-tighten).

5. Place the bubble level on the loudspeaker cap.

6. Adjust the rear articulating spikes until the bubble indicates the loudspeaker is

level.

To Install the LAT–C1000 Foot and Leg Assembly and Pivot Mechanisms

1. Bolt the socket head cap scr

the right leg.

2. Inser

t the shoulder scr

and into the pivot hole on the right cap and hand tighten.

ew thr

ews thr

ough the right shoulder scr

ough the screw holes on the foot and into

ew hole on the right leg

3. Move to the left side and repeat steps 1 and 2, to install the left leg and left

shoulder screw.

4. Adjust the angle of the LAT–C1000 and insert the locator bolt through the leg

and into the locator hole in the cap, one side at a time.

13

SECTION THREE

1

6

5

4

2

3

7

8

9

10

10

11 11

11 11

Anatomy of a Loudspeaker

This section describes LAT features and benefits.

Figure 1 LAT–1000 Front Panel and Grille

1 Cap
2 Driver (Tweeter)
3 Drivers (Midrange)
4 Cabinet Material
5 Proprietary Drivers

(Woofers)
6 Spikes
7 Base
8 Grille
9 Grille Block

10 Grille Holes
11 R bbed

Configuration

12 Port
13 Logo Plate
14 Loudspeaker

Binding Posts

15 Midrange/

Tweeter

Sub-enclosure

(gray area)

16 Tuned Port

(gray area)

17 High pass

Crossover

18 Band pass

Crossover

19 Low pass

Crossover

14

14

12

13

+

-

15

16

P1

M

3

C

8

5

C

2

7

9

C

N +

7

P2

1

2503

l d t s ) n 2 00

3

N -

9

4

P3 P4

C6

2

5

1

R3R2R1

R4

R87R6

0

8C9

1

20 21

4

2

22

24

02

OUT +

R2 1

1

5

2

R9 R0

2

15 17 R 816

0

OUT -

P4

P6

3

R9

R0

6

UT -

M1

OUT +

P59P3

26 C7

M3M1

L1

8

32

C3

6

2 R3

14

L1

2 24

R1

R2

C1 0

7

4

5

19

L3

M9

11

R8 R09

M7M5

R54R3R7R6

M4

L4

3

3

M3M 2M2

20 2

rel d st e ( J ne, 0 0

C2

C1

N -

2

C8

C7

P8

R5

11

2

33

73P6

5

R6

R4

9

7 2

1

OUT +

C0C2C9

M0

C5

N +

C6

C1

1

M

5P43

22

K n u s c J n 2 00

P 01

OUT -

11

2

N -

P1

N +

17

18

19

Figure 1, continued LAT–1000 Back Panel, Tuned Port, Enclosure, Crossovers

15

continued

(SECTION THREE: Anatomy of a Loudspeaker continued)

21

26

23

25

22

20

26

24

27

28

28

Figure 2 LAT– 2000 Front Panel and Grille

20 Cap
21 Driver (Woofer)
22 Driver (Tweeter)
23 Cabinet Material
24 Base
25 Ribbed Configuration
26 Grille Holes
27 Grille
28 Grille Block
29 Tuned Ports

(gray area)

30 High pass/Low pass

Crossover

ea)

(gray ar

Loudspeaker

31

Binding Posts

16

Figure 2, continued LAT– 2000 Tuned Ports, Crossover, Back Panel

31

+

-

29

3 4

c) 2004

2

5

PN 3074 9

P252 4 Re . -

1

7

1

R0

R3

R3

R6

1 1312C

1

P2

C71C6

C2

R7

R8

R2

R

C3 C4

R5

R4

R3

0

C615C 4

C5

R4

R5

R7

R6

R9

R9

R8

R0

R1

R2

3

P4C93

C0

30

17

continued

34

34

33

32

33

39

35

36

37

38

+

40

41

42

43

-

(SECTION THREE: Anatomy of a Loudspeaker continued)

Figure 3 LAT–C1000 Front Panel and Grille, Back Panel

32 Grille
33 Grille Block
34 Grille Holes
35 Proprietary Drivers

(Woofers)
36 Drivers (Midrange)
37 Driver (Tweeter)
38 Cabinet Material
39 Ribbed Configuration
40 Cap
41 Leg
42 Foot
43 Loudspeaker

Binding Posts
44 Midrange/Tweeter

Sub-enclosur

(gray area)

High pass Cr

45

Band pass Cr

46

(gray area)
47 Low pass Crossover
48 Pivot Hole
49 Pivot Pad
50 Shoulder Screw

Shoulder Screw Hole

51

Locator Bolt

52
53 Locator Bolt Hole

Locator Holes

54
55 Socket Head Cap

Screws
56 Screw Holes on Foot
57 Screw Holes on Leg

e

ossover

ossover

18

Figure 3, continued LAT–C1000 Enclosure,Crossovers, Leg Assembly and Pivot Mechanism

44

N -

P 0

O T

+

N -

2 0

N +

O T

N

OUT

N

O T +

47

45

46

50

53

54

54

40

50

52

57

56

55

57

56

55

48

54

51

53

49

19

continued

SECTION THREE: Anatomy of a Loudspeaker continued)

(

Cabinet Material

The LAT sides are constructed of extruded 6063-T5 aluminum. The rigid, dense
rear baffle made of 6061-T6 aluminum absorbs any vibration from the driver cones.
Using this heavy, inert metal means minimal vibrations —no matter how much power
the loudspeakers handle—and thus no loss of sound.

Crossover Design

Each group of driver units (tweeter, midrange, and woofer) on the LAT–1000 and
LAT – C1000 has its own dedicated crossover circuit board. Each circuit board is
made of 1/8-inch fiberglass and has a number of unique elements. To minimize
parasitic inductance and resistance, small capacitors are connected in parallel,
and air-core inductors are wound with oversize wire. In addition, each capacitor is
placed in its own plastic case, making it virtually immune to vibrations and pres­sure variations. This design allows each drive unit to handle its portion of the music
signal without strain, maximizes power delivery, and increases signal linearity while
minimizing resistance and inductance. High-current polypropylene film capacitors
are used exclusively in the audio signal path.

Drivers

Similarly, the resistors in the crossover networks are connected in parallel to mini­mize parasitic inductance and maximize current capacity and power dissipation.
Oversized, high-power, metal oxide and wirewound resistors are used exclusively.

All the inductors are air-core types; they suffer from none of the nonlinearities at low
signal levels and saturation at high signal levels that ir

on-core inductors exhibit. All
the inductors are wound with oversize wire, reducing parasitic resistance to a fraction
of an Ohm. In addition, the inductors in the midrange and tweeter filter networks are
wound with Litz wir

The LA

T–1000 drivers ar

e for extended high-fr

e designed with ver

dynamics. The tweeters featur

equency linearity

y high power handling for enhanced

e machined aluminum faceplates. The midrange

.

drivers feature magnesium cones coupled to a rubber surrounds. The 8” woofers

e designed with low loss linear suspension and aluminum cones, and a unique

ar

esonances.

n r

spider configuration dampens driver

-bor

20

Loudspeaker Grill Design

The block and cord design of the loudspeaker grille decreases reflective surfaces
and improves sound quality. The grille design also matches the ribbed configuration
of the loudspeaker body, providing a sleek, unified look.

Midrange/Tweeter Sub-Enclosure

This feature in the LAT–1000 and the LAT– C1000 separates the midrange/tweeter
and woofers into two discrete physical environments. The midrange and tweeter
are enclosed in their own rigid aluminum box that separates them from the
woofers, and each unit is bolted to the back of the baffle. Standing waves are
eliminated because the midrange and woofer boxes minimize parallel surfaces,
and because the baffle’s aluminum structure absorbs vibrations. The result is
clear, distinct sound in high, mid, and low frequencies.

Tuned Port Design

A rear-firing, tuned port on the LAT–1000 is precision machined, for enhanced
low frequency capability. In the LAT–2000, the computer-optimized, tuned port
design minimizes compression, which can cause loss of sound, especially in
the bass range, at higher output levels. This design allows full excursion of the
drivers, and the resulting depth and range of music reproduction.

Loudspeaker Stand

An optional loudspeaker stand is available for the LA

Pivot Mechanism

Multiple locator positions in the foot and leg assembly allow for optimal on-axis
setup of the LA

Spikes

Articulating stainless steel spikes included with the LAT–1000 loudspeaker allow
you to level the loudspeakers. The stationary front spike reduces vibrations, partic­ularly for installations on carpet.

C1000 center channel.

–

T

–2000.

T

21

SECTION FOUR

Connecting a LAT Series Loudspeaker
to Your System

To connect the loudspeaker to your system:

1. Make sure that all power sources and components are off before connecting

system components.

2. Neatly organize wiring between all system components. Separate AC wires

from audio cables to prevent hum or other unwanted noise from being intro­duced into the system.

3. Locate the loudspeaker binding posts on the LAT back panel.

4. Connect the loudspeaker cable from the positive binding post on the LAT to

the positive channel output on the amplifier. Connect the loudspeaker cable
from the negative binding post on the LAT to the negative channel output on
the amplifier.

IMPORTANT

Do not disconnect signal cables when the amplifier is on and connected to the
loudspeaker. Doing so will cause a loud pop that may damage your components.

Tighten loudspeaker binding posts by hand only.

22

SECTION FIVE

KrellHEAT: Home Theater Technology

The Lossless Acoustic Transducers (LATs) are a series of loudspeakers newly
designed by Krell. The LAT–C1000 and the LAT– 2000 are voiced precisely for use
with the LAT– 1000. Together with the Krell Master Reference Subwoofer, these
components comprise a Krell High End Audio Theater (
system.

Today’s home theater soundtracks contain a demanding range of dynamic material,
from the softest music or whispered conversation to the roar of a jet take-off.
The soundtrack plays a key role in the action seen on the screen and its content
is becoming increasingly complex with each theatrical release. LAT loudspeakers
address the demands of these soundtracks in three ways: superior power handling,
ultra-fast response, and high resolution at low levels.

KrellHEAT provides an electronic transcription of the source material from DVD
to amplifier output. The LAT provides the mechanical transcription—faithfully
and without coloration—from loudspeaker input to listener. These loudspeakers,
driven by Krell amplifiers, guarantee that you will experience the soundtrack of
any film just as the director intended, and continue the Krell tradition of making
the best high-performance audio technology available for home theater.

KrellHEAT) loudspeaker

23

Warranty

Each LAT Series loudspeaker has a limited warranty of five years for parts and labor.
Should this product fail to perform at any time during the warranty, Krell will repair
it at no cost to the owner, except as set forth in this warranty.

This warranty does not apply to damage caused by acts of God or nature.

The war
or implied, including, but not limited to, any implied warranty of merchantability or
fitness for a par
those described in this document. If this product does not perform as warranted
herein, the owner’s sole remedy shall be repair. In no event will Krell be liable for
incidental or consequential damages arising from purchase, use, or inability to use
this product, even if Krell has been advised of the possibility of such damages.

Proof of purchase in the form of a bill of sale or receipted invoice substantiating
that the unit is within the warranty period must be presented to obtain warranty
service. The warranty begins on the date of the original retail purchase, as noted
on the bill of sale or receipted invoice from an authorized Krell dealer or distribu­tor. Previously owned equipment, when re-purchased from an authorized Krell
dealer or distributor, has the balance of the original warranty, based on the origi­nal date of manufacture.

The warranty for Krell products is valid only in the country to which they were
originally shipped, through the authorized Krell distributor for that country, and at
the factory. There may be restrictions on or changes to Krell’s warranty because
of regulations within a specific country. Please check with your distributor for a
complete understanding of the war

ranty described on this page shall be in lieu of any other warranty, expressed

ticular purpose. There are no warranties which exceed beyond

ranty in your countr

y.

If a unit is serviced by a distributor who did not import the unit, there may be a
charge for service, even if the product is within the warranty period.

Freight to the factory is your responsibility. Return freight within the United States
(U.S.A.) is included in the warranty. If you have purchased your Krell product outside
the U.S.A. and wish to have it serviced at the factory, all freight and associated

ges to the factor

char

y are your responsibility.

24

(WARRANTY continued)

Krell will pay return freight to the U.S.A.-based freight forwarder of your choice.
Freight and other charges to ship the unit from the freight forwarder to you are also
your responsibility.

Krell is not responsible for any damage incurred in transit. Krell will file claims
for damages as necessary for units damaged in transit to the factory. You are
responsible for filing claims for shipping damages during the return shipment.

Krell does not supply replacement parts and/or products to the owner of the unit.
Replacement parts and/or products will be furnished only to the distributor perform­ing service on this unit on an exchange basis only; any parts and/or products
returned to Krell for exchange become the property of Krell.

No expressed or implied warranty is made for any Krell product damaged by
accident, abuse, misuse, natural or personal disaster, or unauthorized modification.

Any disassembly, component replacement, perforation of chassis, updates,
or modifications performed to the unit will void the warranty.

In the event that Krell receives a product for warranty service that has been modified
in any way without Krell authorization, all warranties on that product will be void.
The product will be returned to original factory layout specifications at the owner’s
expense before it is repaired. All repairs required after the product has been returned
to original factory specifications will be charged to the customer, at current parts
and labor rates.

All operational featur

es, functions, specifications, and policies are subject to change

without notification.

To register your product for warranty benefits, please complete and return
the Warranty Registration Card enclosed in the shipping box within 15 days

chase. Thank you.

of pur

25

Return Authorization Procedure

If you believe there is a problem with your component, please contact your dealer,
distributor, or the Krell factory to discuss the problem before you return the component
for repair. To expedite service, you may wish to complete and e-mail the Service
Request Form in the Service Section of our website at:

http://www.krellonline.com

To contact the Krell Service Department

TEL [phone], Monday-Friday

9:00 AM to 5:00 PM EST
FAX [phone]
E-MAIL [e-mail]
WEBSITE http://www.krellonline.com

Krell Lossless Acoustic Transducer

PRODUCT MODEL NUMBER SERIAL NUMBER

To return a product to Krell, please follow this procedure so that we may
serve you better.

1. Obtain a Return Authorization Number (R/A number) and shipping address from

the Krell Service Department.

2. Insure and accept all liability for loss or damage to the product during shipment

to the Krell factory and ensure all freight (shipping) charges are prepaid.

The product may also be hand delivered if arrangements with the Service Department
have been made in advance. Proof of purchase will be required for warranty validation
at the time of hand delivery

.

IMPORTANT

Use the original packaging to ensure the safe transit of the product to the factory,
dealer, or distributor. Krell may, at its discretion, return a product in new packaging
and bill the owner for such packaging if the product received by Krell was boxed in
nonstandard packaging or if the original packaging was so damaged that it was
unusable. If Krell determines that new packaging is required, the owner will be
notified before the product is returned.

To purchase additional packaging, please contact your authorized Krell dealer,
distributor, or the Krell Service Department for assistance.

26