Krell Industries KAV 300IL User Manual

KAV–300iL  
Remote Control  
THE LEADER IN AUDIO ENGINEERING  
Integrated Amplifier  
Instructions for Use  
Owner’s Reference  
Contents  
Page  
INTRODUCTION  
DEFINITION OF TERMS  
UNPACKING  
1
2
4
PLACEMENT  
5
5
5
AC Power Guidelines  
Power Cord  
FRONT PANEL DESCRIPTION  
BACK PANEL DESCRIPTION  
7
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  
16  
16  
17  
Tape Input and Output  
OPTIONAL CONFIGURATIONS  
18  
18  
Configuring the KAV–300iL for Theater Throughput  
HOW TO TROUBLESHOOT SYSTEM NOISE  
QUESTIONS AND ANSWERS  
WARRANTY  
20  
21  
22  
23  
RETURN AUTHORIZATION PROCEDURE  
SPECIFICATIONS  
Back Cover  
Krell KAV–300iL  
iii  
Illustrations  
Page  
FIGURE 1 The KAV–300iL Front Panel  
FIGURE 2 The KAV–300iL Back Panel  
FIGURE 3 The KAV–300iL Remote Control  
6
9
12  
iv  
Krell KAV–300iL  
Introduction  
Thank you for your purchase of the Krell KAV–300iL Remote  
Control Integrated Amplifier. This fully integrated amplifier and pre-  
amplifier 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 individ-  
ual 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 con-  
nected 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 ref-  
erence 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 vol-  
ume and balance management of Krell home theater systems.  
Balanced  
INPUT AND OUTPUT  
CONNECTIONS  
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 instal-  
lations, balanced connections have 6 dB more gain than single-  
ended 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 single-  
ended connections as the ground connection is made last and  
broken first. Turn the system off prior to making or breaking single-  
ended connections. Single-ended connections are not recom-  
mended for connections requiring long cable runs.  
Off  
OPERATION  
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, continued  
TECHNOLOGY  
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.  
Krell KAV–300iL  
3
Unpacking  
After opening the box and removing the top layer of foam, the  
KAV–300iL and the KAV–300iL accessory kit containing the follow-  
ing items will be visible:  
1 AC power cord  
1 12 VDC (12 V trigger) cable  
2 spare loudspeaker fuses (AGC 8)  
1 KAV–300iL remote control  
1 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.  
If any of these items are not included please contact your authorized  
Krell dealer.  
Notes  
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 fol-  
lowing 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.  
The KAV–300iL has superb regulation and does not require a ded-  
icated 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.  
AC Power  
Guidelines  
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.  
Power Cord  
Krell KAV–300iL  
5
Front Panel Description  
See Figure 1 on page 6  
The front panel of the KAV300iL 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 KAV300iL between the stand-by and  
the operational modes.  
2 Power LED  
The blue power LED illuminates when the KAV300iL 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 KAV300iL 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 KAV300iL  
remote control. For proper remote control operation, make sure  
the infrared sensor is clear of any obstructions.  
ANALOG  
5 S-1, S-2, S-3, and B-1 Buttons and LEDs  
SOURCE  
COMPONENTS  
Use these buttons to select a balanced analog source component  
(B-1) via an XLR connector or a single-ended analog source com-  
ponent (S-1, S-2, or S-3) via single-ended RCA connectors. The  
selected buttons 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 KAV300iL  
7
Front Panel Description continued  
MODE INDICATORS  
8 Mute Button  
Use this button to interrupt the signal of the input you have select-  
ed. 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.  
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.  
VOLUME ADJUSTMENT  
FUNCTIONS  
11 Front Panel Display  
The front panel display shows volume and balance levels and  
Theater Throughput status.  
8
Krell KAV300iL  
Back Panel Description  
See Figure 2 on page 9  
The KAV300iL back panel provides connections for all inputs and  
outputs, power on/off, and additional remote connections.  
12 Left and Right Loudspeaker Outputs  
AMPLIFIER CHANNEL  
OUTPUTS  
The KAV300iL 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.  
13 Left and Right Balanced Analog Inputs  
The KAV300iL is equipped with one pair of balanced (B-1) inputs  
via XLR connectors.  
ANALOG INPUTS  
14 Left and Right Single-Ended Analog Inputs  
The KAV300iL 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 KAV300iL is equipped with a pair of single-ended tape inputs  
via RCA connectors.  
16 Left and Right Tape Outputs  
ANALOG OUTPUTS  
The KAV300iL is equipped with a pair of single-ended tape  
outputs via RCA connectors.  
17 Left and Right Preamp Outputs  
The KAV300iL is equipped with a pair of single-ended pre-  
amplifier outputs.  
18 RC-5 In  
REMOTE  
The KAV300iL 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.  
CONNECTIONS  
19 12 VDC Out  
The KAV300iL 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  
KAV300iL. When the KAV300iL 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 KAV300iL  
Back Panel Description, continued  
REMOTE  
20 12 VDC In  
CONNECTIONS,  
continued  
The KAV300iL 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 KAV300iL on or off, or to and from stand-by, from  
other components.  
Notes  
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.  
21 IEC Connector  
POWER  
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 KAV300iL against short cir-  
cuits from the external AC power.  
23 AGC 8 Fuses  
The AGC 8 fuses protect the KAV300iL against short circuits in  
the loudspeaker output.  
Fuses must be replaced with the fuse value specified on the back panel.  
Note  
Krell KAV300iL  
11  
Figure 3 The KAV-300iL Remote Control  
Power  
24 Power Key  
25 Pre Key  
24  
25  
27  
Analog Functions  
26 Analog Input Keys  
27 Tape Key  
28  
Output Control  
Functions  
29 Mute Key  
26  
29  
29 Vol (Volume) Keys  
30 Bal (Balance) Keys  
30  
Note  
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.  
12  
Krell KAV300iL  
Remote Control Description  
See Figure 3 on page 12  
The KAV-300iL remote control uses one CR2025 lithium battery,  
which is included with the shipment.  
Battery  
Installation  
and  
To open the battery compartment on the back of the remote  
control:  
Removal  
1. Place the remote face down on the table.  
2. Use your thumbnail or a small jewelers or eyeglass screw-  
driver 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.  
Do not use a knife or other sharp objects to open the battery compart-  
ment; they will scratch the remote control finish.  
Note  
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.  
Replace battery when remote control function becomes intermittent.  
Notes  
Remove battery if the remote control is not used for a long period of time.  
Battery leakage can damage the remote control.  
The KAV300iL remote control accesses complete power amplifier  
and preamplifier functions. A description of the remote control keys  
that activate the KAV300iL follows.  
Remote Control  
Functions  
POWER  
24 Pwr (Power) Key  
Use this key to switch the KAV300iL between the stand-by and  
the operational modes.  
25 Pre Key  
Use this key to activate the KAV300iL remote to access amplifier  
commands.  
Krell KAV300iL  
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 illumi-  
nates when the tape monitor is activated. The LED does not illumi-  
nate when an audio source is activated.  
28 Mute Key  
OUTPUT CONTROL  
FUNCTIONS  
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 indi-  
cated 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:  
-C-  
when 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.  
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 man-  
ual for each component to review your component’s full remote control  
capabilities.  
Note  
14  
Krell KAV300iL  
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 single-  
ended connections. When level matching is critical, keep this gain  
value in mind.  
Follow these steps to connect the KAV300iL to your system.  
Connection  
Steps  
1. Make sure all power sources and components are off before  
connecting inputs and outputs.  
2. Neatly organize the wiring between the KAV300iL and all sys-  
tem 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  
amplifiers left and right loudspeaker output terminals (12).  
The KAV300iL 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 KAV300iL.  
The KAV300iL 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 KAV300iL. 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 KAV300iL  
15  
Operating Your KAV–300iL  
This section provides information about operating the KAV300iL.  
The KAV300iL provides basic input selection and volume control  
operation from the front panel. The remote control includes addi-  
tional preamplifier functions as well as CD transport and amplifier  
controls. See Remote Control, on page 13, for more information.  
After the KAV300iL 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.  
The KAV300iL Remote Control Integrated Amplifier is easy to  
operate. However, great care should be exercised when operating  
a system that includes the KAV300iL, because of the amplifiers  
power output. Switching between active sources without muting  
the preamplifier output, or bumping/miscuing a device, can gener-  
ate large transients at low frequencies. The KAV300iL may gen-  
erate enough power with these transients to damage most loud-  
speakers. 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.  
Amplifier  
Operation  
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 vol-  
ume 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) illu-  
minates, 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 KAV300iL  
Operating Your KAV–300iL, continued  
ON/OFF AND STAND-BY  
3. To turn the amplifier off, press the power button (1) or power  
OPERATION, continued  
key (24). The red stand-by LED (3) illuminates.  
It is now safe to turn off the rest of the system.  
The KAV300iL 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:  
Tape Input and  
Output  
1. Use this button to playback pre-recorded tapes.  
2. Use the tape input to compare the output signal of a three-  
head 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  
KAV300iL is connected to a graphic equalizer or other ancil-  
lary equipment. To activate this function, connect the equip-  
ment to the KAV300iL tape outputs (16) as described in the  
equipment manufacturers manual. Press the tape button (6) or  
key (27) on the remote control to switch between the proces-  
sor output (red tape monitor LED [7] illuminated) and the input  
source (red tape monitor LED [7] not illuminated).  
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.  
Note  
Krell KAV300iL  
17  
Optional Configurations  
To simplify the integration of an audio/video surround sound  
Configuring  
the KAV–300iL  
for Theater  
processor into your system, set any input on the KAV300iL (S-1,  
S-2, S-3, or B-1) to operate as a unity gain stage. Krell calls this  
configuration Theater Throughput.  
Throughput  
When you configure a KAV300iL input for Theater Throughput,  
the KAV300iL 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  
KAV300iL input is configured for Theater Throughput and con-  
nected to the audio/video surround sound processors input config-  
ured for Theater Throughput, all KAV-300iL volume and balance  
adjustments are made through the surround sound processor.  
When you disengage the KAV300iL input from Theater  
Throughput, the volume and balance controls revert to the  
KAV300iL.  
1. Turn on the KAV300iL power.  
HOW TO ACTIVATE  
AN INPUT FOR  
THEATER  
2. Press and release the button (5) for the device you wish to  
configure for Theater Throughput. The LED illuminates.  
THROUGHPUT  
3. Press the button again and hold it for four seconds. The front  
panel display (11) shows thr.”  
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.  
IMPORTANT  
1. Turn on the KAV300iL power.  
HOW TO DISENGAGE  
AN INPUT FOR  
THEATER  
2. Press and release the button (5) for the device you wish to dis-  
engage from Theater Throughput. The LED illuminates.  
THROUGHPUT  
3. Press the button again and hold it for four seconds. "Thr" dis-  
appears from the front panel display (11), indicating that  
Theater Throughput is disengaged.  
18  
Krell KAV300iL  
Optional Configurations, continued  
The KAV300iL is equipped with a pair of single-ended preamplifi-  
er outputs (17). These outputs enable the KAV300iL to be used  
as a preamplifier when it is connected to a separate amplifier.  
Preamplifier  
Output  
Note  
The amplifier channel outputs are always active, even when the  
KAV–300iL is being used only as a preamplifier.  
Krell KAV300iL  
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 KAV300iL amplifier into the system, follow these simple  
troubleshooting steps:  
1. Check all cable terminations, making sure they have solid sol-  
der 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 KAV300iL  
Questions and Answers  
Q. Should I leave my KAV300iL 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 KAV300iLs Theater Throughput capability  
with my surround sound processor, where should I set the  
volume on the KAV300iL?  
A. You do not need to set the volume on the KAV300iL because  
the amplifiers volume and balance controls are not active in  
the Theater Throughput mode. When using the KAV300iLs  
Theater Throughput capability, the surround sound processor  
controls the system volume. See Optional Configurations, on  
page 18.  
Krell KAV300iL  
21  
Warranty  
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.  
To register your product  
for warranty benefits,  
please complete and return  
the Warranty Registration  
Card enclosed in the ship-  
ping box within 15 days of  
purchase. Thank you.  
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 owners 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 Krells 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, perfo-  
ration of chassis, updates, or modifications performed to the unit will void the war-  
ranty.  
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 owners expense before it is  
repaired. All repairs required after the product has been returned to original factory specifi-  
cations 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 KAV300iL  
Return Authorization  
Procedure  
If you believe there is a problem with your component, please con-  
HOW TO EXPEDITE  
SERVICE  
tact 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:  
To contact the Krell Service Department:  
TEL  
203-799-9954  
Monday-Friday, 9:00 am to 5:00 pm EST  
203-799-9796  
FAX  
E-MAIL  
HOW TO RETURN  
A PRODUCT  
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 ship-  
ping 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 (ship-  
ping) charges are prepaid.  
The product may also be hand delivered if arrangements with the  
Service Department have been made in advance. Proof of pur-  
chase 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 pack-  
aging 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 assis-  
tance.  
SERIAL NUMBER  
Your KAV300iL product serial number is:  
Krell KAV300iL  
23  
Krell Industries, Inc.  
KAV–300iL  
Remote Control  
Integrated Amplifier  
v 01.2  
45 Connair Road  
Orange, CT 06477-3650 USA  
TEL 203-799-9954, FAX 203-891-2028  
Specifications  
FREQUENCY RESPONSE  
OUTPUTS  
All operational features, functions,  
specifications, and policies are  
subject to change without  
notification.  
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 pair single-ended via RCA  
connectors  
1 kHz  
<0.04%  
<0.25%  
OUTPUT VOLTAGE  
20 kHz  
Peak to peak  
138 V  
GAIN  
OUTPUT POWER  
35.8 dB  
8 Ohms  
4 Ohms  
200 W  
400 W  
INPUT SENSITIVITY  
0.644 Vrms  
REMOTE CONTROL  
INPUT IMPEDANCE  
47 kOhms  
1 handheld wireless remote  
1 12 VDC Out/In (12 V trigger)  
1 RC-5 input via a DC power  
connector  
OUTPUT IMPEDANCE  
0.17 Ohms  
DIMENSIONS  
POWER CONSUMPTION  
17.3w x 3.5h x 17d in.  
50w x 8.9h x 43.2d cm  
Idle  
20 W  
Max.  
1,800 W  
WEIGHT  
TRANSFORMER  
Shipping  
Unit only  
36.0 lb., 16.4 kg  
31.0 lb., 14.1 kg  
750 VA  
INPUTS  
ALL WITH THEATER THROUGHPUT  
1 pair balanced via XLR connectors  
3 pair single-ended  
via RCA connectors  

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