Krell Industries KAV-300IL User's Manual

KAV–300iL
THE LEADER IN AUDIO ENGINEERING
Remote Control
Integrated Amplifier
Instructions for Use
Owner’s Reference
KAV–300iL
Remote Control Integrated Amplifier
Instructions for Use
v 01.2
CONTACT
INFORMATION
Krell Industries, Inc.
45 Connair Road
Orange, CT 06477-3650 USA
TEL 203-799-9954
FAX 203-891-2028
E-MAIL [email protected]
WEBSITE http://www.krellonline.com
This product complies with the EMC directive (89/336/EEC) and the low-voltage
directive (73/23/EEC).
WARNINGS
Do not place the integrated amplifier where it could be exposed to dripping or
splashing.
The ventilation grids on the top and bottom of the KAV–300iL must be unobstructed at all times during operation. Do not place flammable material on top of or
beneath the component.
When making connections to this or any other component, make sure all components are off. Turn off all systems’ power before connecting the KAV–300iL to any
other component. Make sure all cable terminations are of the highest quality, free
from frayed ends, short circuits, or cold solder joints.
THERE ARE NO USER-SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.
Please contact your authorized dealer, distributor, or Krell if you have any questions not addressed in this reference manual.
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 Krell Industries, Inc., its subsidiaries, and authorized agents.
Krell Current Mode™ and Theater Throughput™ are trademarks of Krell Industries, Inc. All other trademarks and tradenames are registered to their respective companies.
© 2001 by Krell Industries, Inc. All rights reserved
P/N 305219
Contents
Page
INTRODUCTION
1
DEFINITION OF TERMS
2
UNPACKING
4
PLACEMENT
5
AC Power Guidelines
Power Cord
5
5
FRONT PANEL DESCRIPTION
BACK PANEL DESCRIPTION
10
REMOTE CONTROL DESCRIPTION
Battery Installation and Removal
Remote Control Functions
13
13
13
CONNECTING THE KAV–300iL TO YOUR SYSTEM
Connection Steps
15
15
OPERATING YOUR KAV–300iL
Amplifier Operation
Tape Input and Output
16
16
17
OPTIONAL CONFIGURATIONS
Configuring the KAV–300iL for Theater Throughput
18
18
HOW TO TROUBLESHOOT SYSTEM NOISE
20
QUESTIONS AND ANSWERS
21
WARRANTY
22
RETURN AUTHORIZATION PROCEDURE
23
SPECIFICATIONS
Krell KAV–300iL
7
Back Cover
iii
Illustrations
Page
FIGURE 1 The KAV–300iL Front Panel
6
FIGURE 2 The KAV–300iL Back Panel
9
FIGURE 3 The KAV–300iL Remote Control
iv
12
Krell KAV–300iL
Introduction
Thank you for your purchase of the Krell KAV–300iL Remote
Control Integrated Amplifier. This fully integrated amplifier and preamplifier has a fully balanced signal path from input to output and
employs a wide bandwidth design with low negative feedback for
sonic accuracy throughout the frequency spectrum. All circuits up
to the driver stage are pure Class A.
Krell’s new surface mount technology (SMT) means that the
KAV–300iL is an integrated amplifier with big power—200 Watts
per channel—that does not require big space. SMT allows individual circuit elements to be placed very close together. This shortens
signal paths and allows circuit elements to operate at the same
temperature, resulting in more accurate signal transfer and
enhanced reliablilty.
The KAV–300iL is easy to operate and integrate into your system.
The remote control accesses all amplifier functions, and remote
control connection options allow the KAV–300iL to be easily connected with other components. The Theater Throughput feature
provides easy integration of the amplifier into a home theater
system.
This owner’s reference manual contains important information on
the placement, installation, and operation of the KAV–300iL.
Please read this information carefully. A thorough understanding of
these details will help ensure satisfactory operation and long life
for your KAV–300iL and related system components.
Krell KAV–300iL
1
Definition of Terms
Following are the definitions of key terms used in your owner’s reference manual.
CONFIGURATIONS
Theater Throughput
Theater Throughput is a Krell configuration option that allows the
signal from a surround preamp/processor to pass through a Krell
preamplifier or integrated amplifier with no gain, for integrated volume and balance management of Krell home theater systems.
INPUT AND OUTPUT
CONNECTIONS
Balanced
A symmetrical input or output circuit that has equal impedance
from both input terminals to a common ground reference point.
The industry standard for professional and sound recording installations, balanced connections have 6 dB more gain than singleended connections and allow the use of long interconnect cables.
Balanced connections are completely immune to induced noise
from the system or the environment.
Single-ended
A two-wire input or output circuit. Use care when using singleended connections as the ground connection is made last and
broken first. Turn the system off prior to making or breaking singleended connections. Single-ended connections are not recommended for connections requiring long cable runs.
OPERATION
Off
The component is off when the AC power cord is unplugged from
the wall receptacle.
Stand-by Mode
A low power consumption status that keeps the audio circuits at
idle. When you plug the AC power cord into the wall receptacle,
the red stand-by LED illuminates. The component is now ready to
be switched to the operational mode. Krell recommends leaving
the component in the stand-by mode when it is not playing music.
Operational Mode
When the component is in the stand-by mode, and you press the
power button on the front panel or the power key on the remote
control, the blue power LED illuminates. The component is in the
operational mode and is ready to play music.
2
Krell KAV–300iL
Definition of Terms,
TECHNOLOGY
Krell KAV–300iL
continued
Krell Current Mode
A proprietary Krell circuit topology in which the audio gain stages
of a component operate in the current rather than voltage domain.
This unique technology provides the component with exceptional
speed and a wide bandwidth.
3
Unpacking
After opening the box and removing the top layer of foam, the
KAV–300iL and the KAV–300iL accessory kit containing the following items will be visible:
1
1
2
1
1
AC power cord
12 VDC (12 V trigger) cable
spare loudspeaker fuses (AGC 8)
KAV–300iL remote control
CR2025 lithium battery
Grasp the underside of the amplifier and lift it straight out of the
packing box.
Place the amplifier in a safe location and remove the protective
plastic wrapping.
Notes
If any of these items are not included please contact your authorized
Krell dealer.
Save all packing materials. If you must ship your KAV–300iL in the future,
repack the unit in its original packaging to prevent shipping damage.
4
Krell KAV–300iL
Placement
Before you install the KAV–300iL into your system, review the following guidelines to choose the location for the KAV–300iL. This
will facilitate a clean, trouble-free installation. The KAV–300iL does
not require any type of special rack or cabinet for installation. For
the dimensions of the KAV–300iL, see Specifications, on the
back cover.
Place the KAV–300iL on a firm, level surface, away from excessive
heat, humidity, or moisture. The KAV–300iL requires at least two
inches (5 cm) of clearance on each side and at least two inches
(5 cm) of clearance above and below the component to provide
adequate ventilation. Installations inside cabinetry may need extra
ventilation.
The KAV–300iL is not hum-sensitive. Other components may be
placed on or around the KAV–300iL (make sure ventilation grids
remain unobstructed).
Place the amplifier as close to the loudspeakers as possible and
keep loudspeaker cable lengths to a minimum. Loudspeaker cable
adds impedance to the load the amplifier must drive, regardless of
the cable’s gauge. All Krell amplifiers drive the lowest impedances
with ease, but long loudspeaker cables reduce the maximum
power that can be delivered to the loudspeakers.
AC Power
Guidelines
The KAV–300iL has superb regulation and does not require a dedicated AC circuit. Avoid connections through extension cords or
multiple AC adapters. High quality 15 amp grounded AC strips are
acceptable. High quality AC line conditioners or filters may be
used if they are grounded and meet or exceed the unit’s maximum
power consumption of 1800 Watts.
Power Cord
The KAV–300iL should be operated only with the power cord
supplied. Please contact your authorized Krell dealer, distributor,
or Krell before using any devices designed to alter or stabilize the
AC power for the KAV–300iL.
Krell KAV–300iL
5
3 1 2
4
Figure 1 The KAV-300iL Front Panel
Analog Devices
5 S-1, S-2, S-3, and
B-1 Buttons and LED
6 Tape Button
7 Tape LED
Power
1 Power Button
2 Power LED
3 Stand-by LED
4 Infrared Sensor
5
Volume Adjustment
Functions
10 Level Up
and Down Buttons
11 Front Panel Display
Mode Indicators
8 Mute Button
9 Mute LED
6 7
8 9
11
10
Front Panel Description
See Figure 1 on page 6
The front panel of the KAV–300iL accesses power on and off,
analog input selections, volume control, and mute. The front panel
display shows the volume and balance levels, and Theater
Throughput status.
POWER
1 Power Button
Use this button to switch the KAV–300iL between the stand-by and
the operational modes.
2 Power LED
The blue power LED illuminates when the KAV–300iL is in the
operational mode. The power LED also flashes when any remote
control key is pressed.
3 Stand-by LED
The red stand-by LED illuminates when the KAV–300iL is plugged
into a standard AC wall receptacle, indicating that the amplifier is
in the stand-by mode and ready to be switched to the operational
mode.
4 Infrared Sensor
The infrared sensor receives commands from the KAV–300iL
remote control. For proper remote control operation, make sure
the infrared sensor is clear of any obstructions.
ANALOG
SOURCE
COMPONENTS
5 S-1, S-2, S-3, and B-1 Buttons and LEDs
Use these buttons to select a balanced analog source component
(B-1) via an XLR connector or a single-ended analog source component (S-1, S-2, or S-3) via single-ended RCA connectors. The
selected button’s LED illuminates.
6 Tape Button
Use this button to playback pre-recorded tapes. You may also use
this button to compare the output signal of an analog tape recorder
to an audio source. See Tape Input and Output, on page 17.
7 Tape LED
The red tape monitor LED illuminates when the tape monitor is
activated. The LED does not illuminate when an audio source is
activated.
Krell KAV–300iL
7
Front Panel Description continued
MODE INDICATORS
8 Mute Button
Use this button to interrupt the signal of the input you have selected. To unmute, press the mute button again.
9 Mute LED
The red mute LED illuminates when you press the mute button or
mute key (28) on the remote control.
VOLUME ADJUSTMENT
FUNCTIONS
10 Level Up and Down Buttons
The volume level buttons adjust the amplifier output level, which is
indicated numerically on the front panel display; range is 0-151.
11 Front Panel Display
The front panel display shows volume and balance levels and
Theater Throughput status.
8
Krell KAV–300iL
13
23
NO USER SERVICEABLE PARTS INSIDE
Analog Inputs
13 Left and Right Balanced
Analog Inputs
14 Left and Right Single-Ended
Analog Inputs
15 Left and Right Tape Inputs
Amplifier Channel
Outputs
12 Left and Right Loudspeaker
Outputs
14
S–2
S–3
RIGHT
LEFT
OUTPUTS
16
17
TAPE PREAMP
IN
RC–5
KAV–300iL
IN
12VDC
OUT
Power
21 IEC Connector
22 Line Fuse
23 AGC 8
Left and Right
Loudspeaker Fuses
Remote Connections
18 RC-5 In
19 12 VDC Out
20 12 VDC In
Analog Outputs
16 Left and Right Tape Outputs
17 Left and Right Preamp Outputs
15
TAPE
12
23
LEFT OUTPUT
FUSE
S–1
18
AGC 8
12
INPUTS
B – 1 LEFT
30
FUSE
B – 1 RIGHT
19
AGC 8
RIGHT OUTPUT
Figure 2 The KAV-300iL Back Panel
22
21
MADE IN USA
50/60 Hz
Back Panel Description
See Figure 2 on page 9
The KAV–300iL back panel provides connections for all inputs and
outputs, power on/off, and additional remote connections.
AMPLIFIER CHANNEL
OUTPUTS
12 Left and Right Loudspeaker Outputs
The KAV–300iL is equipped with standard binding posts for each
amplifier channel. These connectors accept bare wire, pins, or
spade lugs. Use the red terminal for the positive connection and
the black terminal for the negative connection.
ANALOG INPUTS
13 Left and Right Balanced Analog Inputs
The KAV–300iL is equipped with one pair of balanced (B-1) inputs
via XLR connectors.
14 Left and Right Single-Ended Analog Inputs
The KAV–300iL is equipped with three pairs of single-ended (S-1,
S-2, or S-3) inputs via RCA connectors.
15 Left and Right Tape Inputs
The KAV–300iL is equipped with a pair of single-ended tape inputs
via RCA connectors.
ANALOG OUTPUTS
16 Left and Right Tape Outputs
The KAV–300iL is equipped with a pair of single-ended tape
outputs via RCA connectors.
17 Left and Right Preamp Outputs
The KAV–300iL is equipped with a pair of single-ended preamplifier outputs.
REMOTE
CONNECTIONS
18 RC-5 In
The KAV–300iL is equipped with an RC-5 input that makes custom
installation easy and secure by accepting baseband RC-5 input
commands from hardwired remote controllers.
19 12 VDC Out
The KAV–300iL is equipped with an output that sends 12 VDC
(12 V trigger) power on/off signals to other Krell components and
other devices that incorporate a 12 V trigger. This allows you to
turn other components on or off, or to and from stand-by, from the
KAV–300iL. When the KAV–300iL is switched between stand-by
and operate, it sends a signal from the 12 VDC Out that will switch
other components, allowing whole systems or parts of systems to
be easily coordinated.
10
Krell KAV–300iL
Back Panel Description, continued
REMOTE
CONNECTIONS,
continued
Notes
20 12 VDC In
The KAV–300iL is equipped with an input that receives 12 VDC
(12 V trigger) power on/off signals from other Krell components
and other devices that incorporate a 12 V trigger. This allows you
to turn the KAV–300iL on or off, or to and from stand-by, from
other components.
The 12 VDC output current is limited to 30 ma.
Consult the owner’s reference of the components used in a custom
installation to take full advantage of the remote capability of the
KAV–300iL.
POWER
21 IEC Connector
The connector is for use with the provided IEC standard 15 amp
power cord.
22 Line Fuse
The 50/60 Hz line fuse protects the KAV–300iL against short circuits from the external AC power.
23 AGC 8 Fuses
The AGC 8 fuses protect the KAV–300iL against short circuits in
the loudspeaker output.
Note
Krell KAV–300iL
Fuses must be replaced with the fuse value specified on the back panel.
11
Figure 3 The KAV-300iL Remote Control
Power
24 Power Key
25 Pre Key
24
Analog Functions
26 Analog Input Keys
27 Tape Key
28
Output Control
Functions
29 Mute Key
29 Vol (Volume) Keys
30 Bal (Balance) Keys
29
25
27
26
30
Note
12
Remote control keys listed above function with the KAV-300iL. Other keys
on this remote control may activate other Krell components. Consult the
Krell reference manual for each model to review your component’s full
remote control capabilities.
Krell KAV–300iL
Remote Control Description
See Figure 3 on page 12
Battery
Installation
and
Removal
The KAV-300iL remote control uses one CR2025 lithium battery,
which is included with the shipment.
To open the battery compartment on the back of the remote
control:
1. Place the remote face down on the table.
2. Use your thumbnail or a small jeweler’s or eyeglass screwdriver to move the small switch toward the center of the
remote, while using your index fingernail or screwdriver to pull
down gently on the slot to the right of the switch. The battery
compartment will slide out.
Note
Do not use a knife or other sharp objects to open the battery compartment; they will scratch the remote control finish.
3. Place the battery, positive side up, in the battery tray.
4. Slide battery compartment back into the remote until you hear
a click.
The remote control is ready for operation.
Notes
Replace battery when remote control function becomes intermittent.
Remove battery if the remote control is not used for a long period of time.
Battery leakage can damage the remote control.
Remote Control
Functions
The KAV–300iL remote control accesses complete power amplifier
and preamplifier functions. A description of the remote control keys
that activate the KAV–300iL follows.
POWER
24 Pwr (Power) Key
Use this key to switch the KAV–300iL between the stand-by and
the operational modes.
25 Pre Key
Use this key to activate the KAV–300iL remote to access amplifier
commands.
Krell KAV–300iL
13
Remote Control Functions continued
ANALOG FUNCTIONS
26 Analog Input Keys
Use these keys to select a balanced source (B-1) or single-ended
sources (S-1, S-2, or S-3). The selected input LED on the front
panel illuminates.
27 Tape Key
Use this key to monitor the output signal of a three-head analog
tape recorder, compared to the output signal from an audio
source, when making a recording. See Tape Input and Output,
on page 17. The red tape monitor LED on the front panel illuminates when the tape monitor is activated. The LED does not illuminate when an audio source is activated.
OUTPUT CONTROL
FUNCTIONS
28 Mute Key
Use this key to interrupt the signal of the input you have selected.
To unmute, press the mute key again. The red mute LED (9) on
the front panel illuminates when you press the mute button (8) or
key.
29 Vol (Volume) Keys
Press these keys to adjust the amplifier output level, which is indicated numerically on the front panel display (11); range is 0-151.
30 Bal (Balance) Keys
Use these keys to shift the balance to the left or the right channel.
Balance level is indicated in the front panel display (11). To display
balance, push any key on the remote.
The front panel display indicates:
-Cwhen the system is balanced. If the system is not balanced, the
front panel display indicates if balance is right or left of center, and
how much, on a scale of 1 (least out of balance) to 5 (most out of
balance).
Example: A display of:
--3
means that the balance is moderately right of center. A display of:
5-means the balance is severely left of center.
Note
14
The remote control keys listed above function with the KAV–300iL. Other
keys on this remote control may activate other Krell components, for
example, compact disc players. Consult the Krell owner’s reference manual for each component to review your component’s full remote control
capabilities.
Krell KAV–300iL
Connecting the KAV–300iL
to Your System
USING BALANCED
CONNECTIONS
Krell recommends using balanced interconnect cables. Balanced
interconnect cables not only can minimize sonic loss but are also
immune to induced noise, especially with installations using long
cables. Balanced connections have 6 dB more gain than singleended connections. When level matching is critical, keep this gain
value in mind.
Connection
Steps
Follow these steps to connect the KAV–300iL to your system.
1. Make sure all power sources and components are off before
connecting inputs and outputs.
2. Neatly organize the wiring between the KAV–300iL and all system components. Separate AC wires from audio cables to
prevent hum or other unwanted noises from being introduced
into the system.
3. Connect the left and right loudspeaker cables to the integrated
amplifier’s left and right loudspeaker output terminals (12).
The KAV–300iL uses standard binding posts for each amplifier
channel. These connectors accept bare wire, pins, or spade
lugs. Use the red terminal for the positive connection and the
black terminal for the negative connection.
4. Connect the left and right outputs of your source components to
the appropriate analog inputs (13, 14) on the KAV–300iL.
The KAV–300iL is equipped with one balanced input (B-1), three
single-ended inputs (S-1, S-2, or S-3), and one tape input (15).
The B-1, S-1, S-2, and S-3 inputs can be configured for Theater
Throughput. See Optional Configurations, on page 18 for
information on configuring an input for Theater Throughput.
5. Use the preamp outputs (17) to connect to an additional power
amplifier, for loudspeakers in another room.
6. Plug the AC cord into the IEC connector (21) on the back panel
of the KAV–300iL. Plug the remaining end into the AC wall
receptacle. The red stand-by LED (3) illuminates. There is no
audible click or delay.
Pin assignments for the
XLR connectors
Pin 1 Shield (ground)
Pin 2 Non-inverting (hot) (0°)
Pin 3 Inverting (cold) (180°)
Krell KAV–300iL
15
Operating Your KAV–300iL
This section provides information about operating the KAV–300iL.
The KAV–300iL provides basic input selection and volume control
operation from the front panel. The remote control includes additional preamplifier functions as well as CD transport and amplifier
controls. See Remote Control, on page 13, for more information.
After the KAV–300iL is connected to AC power and is in the
stand-by mode, use the power button (1) or key (24) to switch the
component to the operational mode. The blue power LED (2)
illuminates.
Amplifier
Operation
The KAV–300iL Remote Control Integrated Amplifier is easy to
operate. However, great care should be exercised when operating
a system that includes the KAV–300iL, because of the amplifier’s
power output. Switching between active sources without muting
the preamplifier output, or bumping/miscuing a device, can generate large transients at low frequencies. The KAV–300iL may generate enough power with these transients to damage most loudspeakers. To avoid damage, be sure to switch all sources with the
preamplifier level either muted or fully attenuated. Do not change
inputs to the amplifier while the amplifier is on.
Note
Krell amplifiers have large reserves of clean power and can safely drive
loudspeakers to higher sound pressure levels than other amplifiers.
However, use care when setting high playback levels and lower the volume level at any sign of loudspeaker distress.
ON/OFF AND
STAND-BY OPERATION
When powering up any system, always turn amplifiers on last.
When powering down, always turn amplifiers off first.
1. When the amplifier is in stand-by mode, with the red stand-by
LED (3) illuminated, turn the amplifier on by pressing the
power button (1), or pressing the power key (24) on the remote
control. There is an audible click. The blue power LED (2) illuminates, and the red stand-by LED (3) turns off. The amplifier
is now ready for operation.
2. With the amplifier in the mute position, or the volume control
fully attenuated, select a source from the front panel (5) or
using the remote control (26). Start playing the source. Set the
volume to a comfortable listening level using the level up and
down buttons (10) or volume keys (29).
16
Krell KAV–300iL
Operating Your KAV–300iL, continued
ON/OFF AND STAND-BY
OPERATION, continued
3. To turn the amplifier off, press the power button (1) or power
key (24). The red stand-by LED (3) illuminates.
It is now safe to turn off the rest of the system.
Tape Input and
Output
The KAV–300iL has a discrete tape input and output. The tape
output is used to send an input signal from S-1, S-2, S-3, or B-1 to
a recording device or processor. You can use the tape feature in
three ways:
1. Use this button to playback pre-recorded tapes.
2. Use the tape input to compare the output signal of a threehead analog tape recorder to the output signal of an audio
source, when making a recording. To activate this function,
select an audio source for recording using either the S-1, S-2,
S-3, or B-1 analog input buttons (5) or keys (26). Press the
tape button (6) or tape key (27) on the remote control to switch
between the tape recorder output (red tape monitor LED [7]
illuminated) and the input source (red tape monitor LED [7] not
illuminated).
3. Use the tape output to create a processor loop, when the
KAV–300iL is connected to a graphic equalizer or other ancillary equipment. To activate this function, connect the equipment to the KAV–300iL tape outputs (16) as described in the
equipment manufacturer’s manual. Press the tape button (6) or
key (27) on the remote control to switch between the processor output (red tape monitor LED [7] illuminated) and the input
source (red tape monitor LED [7] not illuminated).
Note
Krell KAV–300iL
When changing sources, lower the volume to off or mute the output. This
ensures that the next source played does not damage your system with
a high output transient.
17
Optional Configurations
Configuring
the KAV–300iL
for Theater
Throughput
HOW TO ACTIVATE
AN INPUT FOR
THEATER
THROUGHPUT
To simplify the integration of an audio/video surround sound
processor into your system, set any input on the KAV–300iL (S-1,
S-2, S-3, or B-1) to operate as a unity gain stage. Krell calls this
configuration Theater Throughput.
When you configure a KAV–300iL input for Theater Throughput,
the KAV–300iL volume and balance controls are transferred to the
audio/video surround sound processor, for integrated volume and
balance management as well as ease of operation. As long as the
KAV–300iL input is configured for Theater Throughput and connected to the audio/video surround sound processor’s input configured for Theater Throughput, all KAV-300iL volume and balance
adjustments are made through the surround sound processor.
When you disengage the KAV–300iL input from Theater
Throughput, the volume and balance controls revert to the
KAV–300iL.
1. Turn on the KAV–300iL power.
2. Press and release the button (5) for the device you wish to
configure for Theater Throughput. The LED illuminates.
3. Press the button again and hold it for four seconds. The front
panel display (11) shows “thr.”
IMPORTANT
Make sure the level on the source component is set to zero when
configuring the KAV–300iL input set for Theater Throughput. Source
components without level controls should not be connected to an
input configured for Theater Throughput. Doing so can result in
excessive and possibly damaging volume levels when the source is
played. Always turn off the source component before you configure
any input on the KAV–300iL for Theater Throughput.
HOW TO DISENGAGE
AN INPUT FOR
THEATER
THROUGHPUT
1. Turn on the KAV–300iL power.
2. Press and release the button (5) for the device you wish to disengage from Theater Throughput. The LED illuminates.
3. Press the button again and hold it for four seconds. "Thr" disappears from the front panel display (11), indicating that
Theater Throughput is disengaged.
18
Krell KAV–300iL
Optional Configurations, continued
Preamplifier
Output
The KAV–300iL is equipped with a pair of single-ended preamplifier outputs (17). These outputs enable the KAV–300iL to be used
as a preamplifier when it is connected to a separate amplifier.
Note
The amplifier channel outputs are always active, even when the
KAV–300iL is being used only as a preamplifier.
Krell KAV–300iL
19
How to Troubleshoot System Noise
AC grounding becomes critical when connecting high performance
audio components. When you mix and match audio components,
each with its own ground potential, a low frequency hum may
occur in one or both loudspeakers. This sometimes occurs when
introducing a new component into a system.
If a low frequency hum emanates from the loudspeakers when you
place the KAV–300iL amplifier into the system, follow these simple
troubleshooting steps:
1. Check all cable terminations, making sure they have solid solder joints and are of sound construction.
2. With the amplifier off, remove the interconnect cables, then
turn the amplifier on. If the hum disappears, turn the amplifier
off and reinsert one of the interconnect cables. Turn the
amplifier back on. If the hum reappears with one or both
cables reinserted, there may be a defective cable. Have the
interconnect cables checked before proceeding.
3. If the interconnect cables are sound, you may be experiencing
a ground loop. Please contact your authorized Krell dealer,
distributor, or Krell for suggestions on how to solve this
problem.
20
Krell KAV–300iL
Questions and Answers
Q. Should I leave my KAV–300iL on at all times?
A. Krell recommends leaving the amplifier in the stand-by mode,
ready to play music. If you are not going to play music for a
long time, you may disconnect the amplifier from AC power
supply.
Q. When I turn on the amplifier there is a loud hum through the
loudspeakers. What should I do?
A. When a new component is introduced into a system, a low
frequency hum may occur in one or both loudspeakers. Check
all input and output connections, making sure they are of
sound construction. See How to Troubleshoot System
Noise, on page 19. If the interconnects and cables are sound,
you may be experiencing a ground loop. This can often be
easily eliminated. Please contact your authorized Krell dealer,
distributor, or Krell for suggestions on how to solve this
problem.
Q. When I use the KAV–300iL’s Theater Throughput capability
with my surround sound processor, where should I set the
volume on the KAV–300iL?
A. You do not need to set the volume on the KAV–300iL because
the amplifier’s volume and balance controls are not active in
the Theater Throughput mode. When using the KAV–300iL’s
Theater Throughput capability, the surround sound processor
controls the system volume. See Optional Configurations, on
page 18.
Krell KAV–300iL
21
Warranty
To register your product
for warranty benefits,
please complete and return
the Warranty Registration
Card enclosed in the shipping box within 15 days of
purchase. Thank you.
This Krell product has a limited warranty of five years for parts and labor on circuitry. 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.
The warranty does not apply to damage caused by acts of God or nature.
The warranty on this page shall be in lieu of any other warranty, expressed or implied,
including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. There are no warranties which exceed beyond 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 retail purchase, as noted on the bill of sale or receipted invoice from
an authorized Krell dealer or distributor.
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
warranty in your country.
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 charges to the factory are
your responsibility.
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 unauthorized voltage conversion, disassembly, component replacement, perforation of chassis, updates, or modifications performed to the unit will void the warranty.
The operating voltage of this unit is determined by the factory and can only be changed by
an authorized Krell distributor or at the factory. The voltage for this product in the U.S.A.
cannot be changed until six months from the original purchase date.
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 features, functions, and specifications and policies are subject to change
22
Krell KAV–300iL
Return Authorization
Procedure
HOW TO EXPEDITE
SERVICE
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
FAX
E-MAIL
WEBSITE
HOW TO RETURN
A PRODUCT
203-799-9954
Monday-Friday, 9:00 am to 5:00 pm EST
203-799-9796
[email protected]
http://www.krellonline.com
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.
HOW TO PURCHASE
ADDITIONAL PACKING
To purchase additional packaging, please contact your authorized
Krell dealer, distributor, or the Krell Service Department for assistance.
SERIAL NUMBER
Your KAV–300iL product serial number is:
Krell KAV–300iL
23
Krell Industries, Inc.
45 Connair Road
Orange, CT 06477-3650 USA
KAV–300iL
Remote Control
Integrated Amplifier
TEL 203-799-9954, FAX 203-891-2028
E-MAIL [email protected]
WEB SITE www.krellonline.com
v 01.2
Specifications
All operational features, functions,
specifications, and policies are
subject to change without
notification.
FREQUENCY RESPONSE
OUTPUTS
20 Hz-20 kHz +0 dB, -0.07 dB
2 loudspeaker via 5-standard
binding posts
SIGNAL TO NOISE RATIO
“A” WEIGHTED
1 pair single-ended preamp
via RCA connectors
99 dB
TAPE INPUT AND OUTPUT
TOTAL HARMONIC DISTORTION
(THD)
1 kHz
<0.04%
20 kHz
<0.25%
1 pair single-ended via RCA
connectors
OUTPUT VOLTAGE
Peak to peak
GAIN
138 V
OUTPUT POWER
35.8 dB
INPUT SENSITIVITY
8 Ohms
200 W
4 Ohms
400 W
0.644 Vrms
REMOTE CONTROL
INPUT IMPEDANCE
1 handheld wireless remote
47 kOhms
1 12 VDC Out/In (12 V trigger)
OUTPUT IMPEDANCE
1 RC-5 input via a DC power
connector
0.17 Ohms
DIMENSIONS
POWER CONSUMPTION
Idle
Max.
20 W
1,800 W
TRANSFORMER
750 VA
INPUTS
ALL WITH THEATER THROUGHPUT
1 pair balanced via XLR connectors
3 pair single-ended
via RCA connectors
17.3w x 3.5h x 17d in.
50w x 8.9h x 43.2d cm
WEIGHT
Shipping
36.0 lb., 16.4 kg
Unit only
31.0 lb., 14.1 kg