Page 1
KAV-250a
Stereo
Power
Amplifier
and
KAV-250a/3
Three-Channel
Power
Amplifier
Instructions
for
Use,
v
99.2
Cover:
KAV-250a/3
Three-Channel
Power
Amplifier
Krell
Industries,
Inc.
45
Connair
Road
Orange,
CT
06477-3650
USA
TEL
203-799-9954
FAX
203-799-9796
E-MAIL
krell
@
krellonline.com
WEBSITE
http://www.krellonline.com
This
product
complies
with
the
EMC
directive
(89/336/EEC)
and
the
low-voltage
directive
(73/23/EEC).
WARNINGS
The
amplifier
must
be
placed
on
a
firm,
level
surface
where
it
is
not
exposed
to
dripping
or
splashing.
The
ventilation
grids
on
the
top
of
the
amplifier
and
the
space
underneath
the
amplifier
must
be
unobstructed
at
all
times
during
operation.
Do
not
place
flammable
material
above
or
beneath
the
amplifier.
Contact
your
authorized
Krell
dealer,
distributor,
or
Krell
before
using
any
devices
designed
to
alter
or
stabilize
the
AC
power
for
the
KA
V-250a
or
KA
V-250a/3.
Before
connecting
the
KA
V-250a
or
KA
V-250a/3,
make
sure
the
amplifier
is
off
and
any
output
device
(such
as
a
preamplifier)
is
in
mute
or
stand-by
mode.
Make
sure
all
cable
terminations
are
of
the
highest
quality
and
free
from
frayed
ends,
short
circuits,
or
cold
solder
joints.
Use
only
one
set
of
inputs
to
the
amplifier
at
a
time.
After
reconfiguring
for
MAT,
do
not
use
more
than
one
input
at
the
same
time.
After
bridging,
do
not
use
both
inputs
at
the
same
time.
THERE
ARE
NO
USER
SERVICEABLE
PARTS
INSIDE
ANY
KRELL
PRODUCT
Please
contact
your
authorized
Krell
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.
Multi
Amp
Throughput
TM
is
a
trademark
of
Krell
Industries,
Inc.
All
other
trademarks
and
tradenames
are
registered
to
their
respective
companies.
©
1999
by
Krell
Industries,
Inc.
All
rights
reserved
P/N:
I960101710688
Page 2
Contents
INTRODUCTION
'
DEFINITION
OF
TERMS
UNPACKING
PLACEMENT
AC
Power
Guidelines
FRONT
PANEL
DESCRIPTION:
KAV-250a
BACK
PANEL
DESCRIPTION:
KAV-250a
FRONT
PANEL
DESCRIPTION:
KAV-250a/3
BACK
PANEL
DESCRIPTION:
KAV-250a/3
CONNECTING
THE
KAV-250a
or
KAV-250aJ3
AMPLIFIER
TO
YOUR
SYSTEM
Input
and
Output
Connections
OPTIONAL
SYSTEM
CONFIGURATIONS
Multi
Amp
Throughput
Bridged
Operation
Examples
of
Connection
Scenarios
AMPLIFIER
OPERATION
On/Off
and
Operation
AMPLIFIER
TROUBLESHOOTING
How
to
Troubleshoot
System
Noise
QUESTION
AND
ANSWER
WARRANTY
RETURN
AUTHORIZATION
PROCEDURE
SPECIFICATIONS
Page
1
1
2
3
3
5
7
10
12
14
14
15
15
20
22
25
25
26
26
27
28
29
30
KAV-250a
and
KAV-250a/3
Amplifiers
iii
