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45 Connair Drive
Orange, CT 06477-0533, USA
KMA-160
OWNER,
S MANUAL:
INSTALLATION
& OPERATION
INSTRUCTIONS
JUNE. !,.. 19.89
GENERAL
INFORMATION
Thank
you
for
purchasing
the
KMA-160
Monaural
Amplifiers.
The
KMA-i60
represents
the
absolute
latest
evolution
in amplifier
technology
and has many
innovative
design
features.
It is one of four
amplifiers
in
the
new
KRELL
Programmable
Series,
the
features
of
which
are
are
discussed
below.
There
are
several
aspects
of
its
operation
that
require
your
special
attention
and
understanding
before
installation
is
begun.
Also,
this
document
contains
much
general
information
concerning
audio
system
installation
in addition
to specifics
of the KMA-160.
PURE
CLASS
A OPERATION
AND POWER
CONSIDERATIONS
The
KMA-160
is rated
as delivering
160
watts
of Class
A power
into
8
ohms.
One
inherent
aspect
of
Class
A operation
is
the
need
for
a
large
amount
of
current
from
the
AC
mains.
The
amplifier
at
idle
draws
8 amps.
However,
the
Class
A rating
does
not completely
reveal
the true,
overall
power
of the KMA-160,
both
in terms
of output
power
or AC power
consumption.
The
amplifiers'
maximum
output
into
8 ohms
is 240 watts
per channel.
That
every
KRELL
product
uses
Class
A circuitry
in
all
gain
and
supply
stages
is
a foundation
of
our
design
philosophy.
A second
design
commitment
that
relates
to amplifiers
is that
every
unit
be
capable
of doubling
its
output
into
successively
lower
impedances.
The KMA-160
will
deliver
320
watts
per channel
into
4 ohms;
640 watts
per
channel
into
2 ohms
and
1280
watts
per
channel
into
i ohm.
And
there
is
headroom
over
these
figures!
It
is
capable
of
driving
impedances
below
I ohm.
Use
below
i ohm
requires
adjustment
of the
Programmable
Low Impedance
Limit
Set circuit
on the Protection
Board.
This
adjustment
is performed
by the dealer
or distributor.
Given
the above,
the
AC power
supplied
to the amplifier
is crucial
to
getting
maximum
performance.
The KMA-160
pair
should
have
a dedicated
20 amp line.
Telephone: (203) 799-9954 / FAX: (203) 799-9796
-
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Table of Contents
Related Manuals for Krell Industries Monaural Amplifiers KMA-160
Summary of Contents for Krell Industries Monaural Amplifiers KMA-160
- Page 1 45 Connair Drive Orange, CT 06477-0533, USA KMA-160 OWNER, S MANUAL: JUNE. !,.. 19.89 GENERAL INFORMATION Thank purchasing KMA-i60 represents technology and has many amplifiers which discussed operation that require before installation general information concerning to specifics of the KMA-160. PURE CLASS A OPERATION...
- Page 2 Amplifiers dissipate much KMA-160 should be installed ventilation. If you have cabinet, extra ventilation done with fans in a variety rear open, 2 - 3 inches amplifier, ventilation will The dimensions of the KMA-160 units weigh 80 pounds INPUT CONNECTIONS KMA-160 bo~h balanced...
- Page 3 PROTECTION CIRCUITRY KMA-160 a sophisticated from dangerous input analyze various amplifier if the amp should fail. When protection circuit functioning. on/off position. Switch it to the input or output problem be turned minimum is i0 seconds. Important: this procedure, contact WARRANTY/SERVICE I~;FORMATION There...
- Page 4 Once amplifiers are in place and interconnect cables. with level fully attenuated; the AC last. OPERATION When turning on the system, KMA-160 on/off switch involved in several protection outputs connected circuits have determined speaker relays will be engaged. point. The amplifiers are now ready temperature and sound...
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