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HTS 7.1
Home Theater Standard 7.1 Surround Preamp/Processor
The Krell Home Theater Standard 7.1 is a full
system control center offering exceptional
audio and video performance, flexibility, and
ease of use. It is the centerpiece in Krell’s
HEAT™—High End Audio Theater—system
concept, which applies the fundamental prin-
ciples of Krell audio engineering to the cre-
ation of a fully integrated high-performance
multichannel audio/video system. Krell HEAT
makes it possible to enjoy movies at home
with audio quality unmatched by even the
finest commercial theater venues.
The Home Theater Standard 7.1 is THX Ultra
certified and is fully compatible with the lat-
est surround processing modes, including
THX Surround EX, Dolby Digital EX,
DTS ES 6.1, DTS NEO:6, and Dolby Pro
Logic II. Additionally, Krell Music Surround
modes provide enhanced reproduction of
conventional stereo music sources.
The analog circuitry—the most critical stage
in a surround preamp/processor—features the
advanced signal path developed for Krell’s
flagship stereo preamplifier, the Krell Current
Tunnel. All eight channels employ fully bal-
anced Krell Current Mode™ topology in a
zero-feedback configuration, delivering a
staggering 1MHz bandwidth. This circuitry
assures the most transparent reproduction of
today’s most demanding
The digital surround engine features state-of-
the-art signal processors, operating at high
speed and upsampled 24-bit precision, aug-
mented by 8MB of added memory. The
resulting boost in processing efficiency
improves bit stream recognition and channel
steering. Digital crossover circuitry,
offering a wide range of crossover fre-
quencies, operates in 48-bit double-
precision mode for unparalleled
movie soundtracks and
high-resolution audio
formats. In Preamp
ability to optimize speaker/subwoofer
system performance.Finally, all chan-
nels are processed by 24-bit/192 kHz
DACs, yielding the most accurate
mode, the HTS 7.1
operates as a pure
analog preamplifier,
bypassing all digital
analog signal possible.
ciruitry to ensure the
cleanest, most direct
signal path.
HTS 7.1 rear panel shown.
With its powerful configuration
versatility and unparalleled sys-
tem interface and flexibility, the
HTS 7.1 is easy to use. Built-in
step-by-step guides simplify
optimal setup.
Krell’s unique software-based seven-channel digital
room equalizer maximizes system performance in any
room. For each of four memory settings, the user can
program filter type (high-pass, low-pass, notch, peaking,
and high/low shelf), frequency,s shape, and level for all
seven channels. This makes it possible to program, for
example, independent settings for stereo music, multi-
channel music, movie surround, or even video game
software. Krell’s digital room equalizer can transform
your family entertainment room into a breathtaking
home theater...without hiring an architect.
Broadcast-quality all-discrete
video circuitry, providing
bandwidth greater than
80MHz, delivers the most
vivid color and detailed pic-
ture with all input signals—
including composite, S-video,
interlaced component, and
progressive and wideband
High Definition.
Controls include bidirectional RS-232 communications,
12V triggers, and direct RC-5 input. The HTS 7.1 is also
Crestron I2P certified for use with touchpanel-based sys-
tems. The operating system resides in FLASH memory,
enabling software upgrades via the RS-232 port.
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TAS
Theater Amplifier Standard Multichannel Amplifier
The Krell Theater Amplifier Standard
comprises five identical channels in a sin-
gle chassis, providing prodigious output
capability to drive any home theater
speaker array to lifelike levels… with
unmatched Krell sonic excellence.
The Theater Amplifier Standard delivers 200
Watts per channel into 8 ohms (400 Watts
per channel into 4 ohms). Adjacent channels
can be bridged to deliver 800 Watts into 8
ohms. Featuring Krell Current Mode™, dis-
crete Class A, direct-coupled, fully comple-
mentary gain stages, Krell’s newest circuity
topology ensures unmatched transparency
and accuracy. The driver/output stage
employs 14 high-current transistors per
channel. Backed by an enormous 4kVA
toroidal-transformer power supply, this
design delivers huge output current capabili-
ty for unwavering performance even with
challenging speaker loads and the most
demanding music and movie
Both balanced and single-ended inputs are
provided. 12VDC trigger input/output ports
enable remote power on/off operation. A Multi
Amplifier Throughput™ (MAT) feature sends
the signal to any or all channels from a single
input connection for reduced wiring complexi-
ty in multi-amplified systems. A DB-25 input
enables convenient single-cable connection of
audio and control signals.
program material.
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KAV-3250 Three-Channel Amplifier
KAV-2250 Two-Channel Amplifier
KAV
Two powerful additions to Krell’s highly
acclaimed KAV Series provide high-per-
formance music and home theater sys-
tem enthusiasts with even greater choice
and system configuration flexibility. The
KAV-3250 and KAV-2250 amplifiers fea-
ture the newest Krell design enhance-
ments, providing an extraordinary
degree of sonic refinement.
The KAV-3250 Three-Channel and KAV-
2250 Two-Channel amplifiers share numer-
ous Krell design and manufacturing tech-
nologies. Both amplifiers are powered by a
massive 2kVA toroidal-transformer supply.
Both deliver a substantial power output of
250 Watts per channel into 8 ohms (500
Watts per channel into 4 ohms). With either
amplifier, adjacent channels can be bridged
to deliver 1000 Watts into 8 ohms.
Both amplifiers include the Krell Multi
Amp Throughput™ (MAT) feature, which
feeds the signal from a single input—
balanced or single-ended—to any or all
channels. This simplifies wiring require-
ments in multi-amplified systems.
As with the Theater Amplifier Standard,
the gain stages use Krell Current Mode™,
discrete Class A, fully complementary
circuitry. The driver/output stages
employ 14 high-current transistors per
channel for high output current capabili-
ty. This design delivers the clean, power-
ful, detailed reproduction that is the
hallmark of Krell amplifiers.
The Krell Theater Amplifier Standard, KAV-3250,
and KAV-2250 can be used in combinations to
deliver 5, 6, 7, or more channels of incompara-
ble amplification as needed in sophisticated
home theater and whole-house systems.
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KAV-280cd
Compact Disc Player
The Krell KAV-280cd establishes a
new high standard of performance
and value among high-end compact
disc players. Incorporating an
advanced disc transport mechanism
(compatible with CD-R and CD-R/W
media), premium digital circuitry,
Class A analog circuitry, and sophisti-
cated high-linearity power supply, the
KAV-280cd delivers performance
unequaled by many more expensive
players. It is the ideal CD player for
the serious music lover.
Two 24-bit ultra-high-resolution digital-to-
analog converters per channel provide fully
balanced operation with exceptional repro-
duction quality. The analog stage features
Krell Current Mode™, discrete Class A, direct-
coupled, fully complementary circuitry.
The KAV-280cd has both Toslink optical
and coaxial digital outputs. 12VDC trigger
input/output ports enable connections for
remote power on/off. An RC-5 interface is
provided for remote control system inte-
gration. A convenient slimline handheld
remote control is included.
A perfect Krell music system: the KAV-280cd
Compact Disc Player, KAV-300iL Integrated
Amplifier, and LAT-2 Lossless Acoustic Transducer
—a treat for the eyes and a feast for the ears.
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KAV-300iL
Integrated Amplifier
The Krell KAV-300iL Integrated Amplifier is
power and control in essential form.
Delivering exceptionally musical sound
reproduction and an operational elegance
matched by few components at any price,
the KAV-300iL is an ideal component for
music enthusiasts seeking quality, perfor-
mance, and convenience.
With power output of 200 Watts per channel
into 8 ohms and 400 Watts per channel into
4 ohms, the KAV-300iL has tremendous
power reserves and provides high dynamic
headroom. Even the most demanding source
material is thus reproduced with decided
authority and transparency.
The preamplifier section features Krell’s
advanced Class A, direct-coupled circuitry
for superbly detailed music reproduction.
Preamp circuits are powered by a dedicated
supply with discrete voltage regulators.
The power amplifier section incorporates
proprietary Krell driver and output transis-
tors. 12 devices per channel provide enor-
mous output current capability—far
beyond that of typical integrated ampli-
fiers.
The gain stages use Krell Current Mode™,
discrete Class A, direct-coupled, fully com-
plementary circuitry, further ensuring a
level of reproduction quality normally asso-
ciated only with the most expensive sepa-
rate components.
The power supply features a
massive 800VA toroidal trans-
former. Extensive power sup-
ply filtering and decoupling
between stages assure low
noise and high stability.
Both balanced and single-ended inputs are pro-
vided, and Krell’s Theater Throughput™ mode
simplifies integration into home theater systems.
A convenient full-function handheld remote
control is supplied. The KAV-300iL thus comple-
ments superb sound quality with outstanding
operational ease and functional versatility.
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The KAV Series: Continuing a Tradition of Performance and Elegance
Theater Amplifier Standard
Specifications
DVD Standard
Compatible Formats:
Video Decoding:
Firmware:
DVD Video, CD Audio, CD-R, CD-RW,
Frequency Response:
Signal-to-Noise Ratio:
Total Harmonic Distortion:
20-20,000 Hz +0, -0.09 dB
Video CD
Better than 110 dB “A” weighted
Automatic NTSC or PAL decoding on all
outputs; 16:9 and 4:3 displays supported
Less than 0.03% at 1 kHz
Less than 0.20% at 20 kHz
Upgradable via CD-ROM
Gain:
25.8 dB
Outputs:
Input Impedance:
Input Sensitivity:
100 kOhms
2.05 Vrms
Analog Audio
Digital Audio
Video Interlaced
Video Progressive
1 pair balanced; 1 pair single-ended
1 coaxial; 1 Toslink
1 component; 1 S-video; 1 composite
1 component; 1 RGBHV; 1 VGA
Output Power:
Each Channel
Bridged
200 W at 8 ohms; 400 W at 4 ohms
800 W at 8 ohms
Remote Control:
Dimensions (WxHxD):
Weight:
1 handheld unit; 1 12 VDC in/out (12 V
trigger); 1 RC-5 input; 1 bidirectional RS-232
Inputs:
5 single-ended; 5 balanced; 5 via DB-25
1 12 VDC in/out (12 V trigger)
17.25 x 9.75 x 17.00 in. • 43.8 x 24.8 x 43.2 cm
100 lb. • 45.5 kg
17.25 x 5.65 x 16.75 in.
43.8 x 14.4 x 42.5 cm
Remote Control:
Dimensions (WxHxD):
Weight:
20 lb. • 9.1 kg
Home Theater Standard 7.1
KAV-3250/KAV-2250
Frequency Response:
Signal-to-Noise Ratio:
Signal-to-Noise Ratio:
94 dB “A” weighted
20-20,000 Hz +0, -0.09 dB
Total Harmonic Distortion:
-88 dB unweighted, 20-20,000 Hz
Better than 112 dB “A” weighted
Inputs:
Total Harmonic Distortion:
Less than 0.03% at 1 kHz
Less than 0.20% at 20 kHz
Analog Audio
1 pair balanced; 7 pairs single-ended;
one 7.1 multichannel input
6 coaxial; 2 optical
4 S-video; 4 composite; 2 component
2 pair single-ended
Gain:
25.7 dB
Digital Audio
Video
Analog Tape
Input Impedance:
Input Sensitivity:
100 kOhms
2.32 Vrms
Outputs:
Output Power:
Each Channel
Bridged
Analog Audio
Digital Audio
Video
Analog Tape
Zone 2
8 balanced; 8 single-ended; 1 multichannel
1 coaxial; 1 Toslink
2 S-video; 2 composite; 1 component
2 pair single-ended
1 pair single-ended
250 W at 8 ohms; 500 W at 4 ohms
1,000 W at 8 ohms
Inputs (KAV-3250/2250):
Remote Control:
3/2 single-ended; 3/2 balanced
1 12 VDC in/out (12 V trigger)
17.25 x 5.65 x 17.00 in. • 43.8 x 14.4 x 43.2 cm
68/64 lb. • 30.9/29.1 kg
Remote Control:
1 handheld unit; 1 12 VDC in/4 12 VDC
out (12 V trigger); 1 RC-5 input; 1 bidirec-
tional RS-232
Dimensions (WxHxD):
Weight (KAV-3250/2250):
Decoding Modes:
Dolby Pro Logic II; Dolby Digital 5.1;
DTS 5.1; DTS ES Discrete 6.1; DTS ES
Matrix 6.1; THX Surround EX; DTS Neo:6;
Dolby Digital Surround EX
KAV-300iL
Frequency Response:
Signal-to-Noise Ratio:
Total Harmonic Distortion:
20-20,000 Hz +0, -0.07 dB
99 dB “A” weighted
Surround Enhancement:
Dimensions (WxHxD):
9 Krell Music Surround modes
Less than 0.04% at 1 kHz
Less than 0.25% at 20 kHz
17.25 x 5.65 x 16.25 in.
43.8 x 14.4 x 41.3 cm
Gain:
35.8 dB
Weight:
19.25 lb. • 8.75 kg
Input Impedance:
Input Sensitivity:
Output Impedance:
Inputs:
47 kohms
0.644 Vrms
0.17 ohms
KAV-280cd
Frequency Response:
Signal-to-Noise Ratio:
Total Harmonic Distortion
D/A Converters:
20-20,000 Hz +0, -0.5 dB
103 dB “A” weighted
1 pair balanced; 3 pair single-ended
(all with Theater Throughput)
-82 dB, 20-20,000 Hz
4 Burr-Brown PCM-1704 24-bit devices
1 coaxial
Outputs:
2 loudspeakers via std. 5-way binding posts
1 pair single-ended preamp
Tape Input and Output:
Output Power:
1 pair ea. single-ended
Digital Audio Output:
Remote Control:
200 W x 2 at 8 ohms; 400 W x 2 at 4 ohms
1 handheld unit; 1 12 VDC in/out (12 V
trigger); 1 RC-5 input
Remote Control:
1 handheld unit; 1 12 VDC in/out (12 V
trigger); 1 RC-5 input
Dimensions (WxHxD):
Weight:
17.25 x 3.45 x 16.25 in.
43.8 x 8.8 x 41.3 cm
Dimensions (WxHxD):
Weight:
17.25 x 3.45 x 17.00 in. • 43.8 x 8.8 x 43.2 cm
31.0 lb. • 14.1 kg
13.5 lb. • 6.1 kg
All operational features, functions, specifications, and policies are subject to change without notification.
Krell Industries, Inc. • 45 Connair Road • Orange, CT 06477-3650 USA • Tel: 203-799-9954 • Corp. Fax: 203-799-9796
“Krell” is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell Industries, Inc., its subsidiaries, and authorized agents. “CAST,” “HEAT,” “Theater Throughput,” “Multi Amp Throughput,”
“Krell Current Mode,” “Krell Architech Construction,” Krellcoat Finish,” are trademarks of Krell Industries, Inc. Manufactured under license from Dolby Laboratories. “Dolby,” “Pro Logic,” and the double-D symbol
are trademarks of Dolby Laboratories. Copyright 1992-1997 Dolby Laboratories, Inc. All rights reserved. “DTS,” “DTS Digital Surround,” “DTS-ES Extended Surround,” and “Neo:6” are registered trademarks of
Digital Theater Systems, Inc. “THX” is a registered trademark of Lucasfilm, Ltd. “Toslink” is a trademark of Toshiba Corporation. All other trademarks and trade names are properties of their respective owners.
©2002 Krell Industries, Inc. All rights reserved.
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