Troubleshooting Guide
What
might appear
to
be
a malfunction
in
your
unit mayjust
be
the
result
of
slight misoperation
or
miswiring.
Before
calling
service,
first
check
the
following
table
for
possible
problems.
No sound. • Input
(or
output)
cables
are
disconnected. • Connect the input
(or
output)
cables.
(No sound from
one
side.)
• Protection circuit
may
be
activated.
•
Check
connections
by
referring
to "Protection function".
(Blown fuse.)
•
Volume
is
too high.
•
Replace
the
fuse
and
use
lower
volume.
•
The
speaker
cord
is
shorted.
• After
check
the
speaker
cord
and
fixing the
cause
of
the
short,
reolace
the
fuse.
The
output
level
is
too
small
•
The
input sensitivity adjusting control
is
not
set
to
the
correct •
Adjust
the
control correctly referring to
"Controls".
(or too
larael.
oosition.
The sound
quality
is
bad.
•
The
speakers
wire
are
connected with wrong
(±J
/8polarity. • Connect them properly checking the
(±J
/ 8 of the terminals
(The sound
is
distorted.)
and
wires
well.
• A
speaker
wire
is
pinched
by
a
screw
in
the
car
body.
• Connect the
speaker
wire
again
so
that it
is
not pinched
by
anything.
•
The
switches
mav
be
set
imorooerlv. •
Set
switches
orooerlv
bv
referrino
to
"Svstem
examoles'.
The sound does
not
change
•
The
AMP
CONT
has
been
turned
"OFF'~
•
Turn
the
AMP
CONT
"ON".
even when you have changed
•
The
filtered
band
has
been
controlled
by
the Amplifier
Control.
•
Turn
the
filter
Off.
it
with
the
AmDlifier Control.
The set value cannot be
•
The
AMP
Control
of
the
Center
Unit
is
being
used.
•
Release
the
AMP
Control mode
of
the
Center
Unit.
changed by
the
Amplifier
Control
of
the
unit.
The Amplifier Control cannot
•
An
incorrect
10
number
is
used
for
the
Master
amplifier.
•
Always
set
the
10
number of the
Master
amplifier to
"0".
be
operated from
the
Center •
The
10
number
of
the
amplifier
has
been
changed.
• After
you
have
changed the
10
number
of
an
amplifier, turn Off
Unit.
the
POWER
switch
ofthe
Center
Unit
first
then turn it
On
aaain.
2J?ecifications
Specifications subject
to
change
without
notice.
KAC-X521
................
179W 165W
....................................
..
305
W
254
W
(1
kHz)
........................
..
612W
505Wx
1
..
191
W 170W
...........
under
0.3
dB
(40)
under
0.3
dB
(40)
..
83
dBA
(W/4
0)
81
dBA
(W/4 0)
..
83
dBA
(W/4 0)
82
dBA
(W/4
0)
....................................
0.2
V
0.2
V
..
..5.0
V 5.0V
..
10kO 10kO
..
50
-
200
Hz
(variable)
50
-
200
Hz
(variable)
..
50
-
200
Hz
(variable)
50
-
200
Hz
(variable)
..
15
Hz
15
Hz
......................................................
5
Hz
-
70
kHz
5
Hz
-
70
kHz
Audio Section KAC-X621
RMS
Power
Output
(+B
=
14.4
V,
CEA-2006)
Normal
(4
0/2ch)
(1.0
%
THO+N)
(2
0/2ch)
(1.0
%
THO+N)
...
Bridged
(40)
(1.0
%
THO+N).............
.. ..
Oynamic
Power
(+B
=
14.4
V,
CEA-2006)
.
Output Regulation
(+B
=
14.4
V,
CEA-2006)
..
Signal
to
Noise
Ratio
(CEA-2006)
, .
(Bypass)
KEA-2006)
Sensitivity (rated output)
(MAX.)
..
.
(MIN.)
.
Input Impedance
.....
Low
Pass
Filter Frequency
(24
dB/oct.)
..
High
Pass
Filter Frequency
(12
dB/oct.)
..
Infrasonic Filter Frequency
(24
dB/oct.)
Frequency
Response
(+0,
-3
dB)
..
............
100
W x 2
80
W x 2
..
200
W x 2
160
W x 2
..
.400
W x 1
320
W x 1
.150W x 2
............................................................
150W x 2
......................................
300W x 2
..........................
.600W
xl
.........................................
0.2
V
........................................
.5.0
V
.......
10
kO
............................
.50
...
200
Hz
(variable)
.......................................
50
-
200
Hz
(variable)
...................................................
15
Hz
.........................
5
Hz
-
70
kHz
.........................
..
...
105
dB
Audio Section KAC-PS621
Max
Power
Output......
..
1200
W
Rated
Power
Output
(+B
=
12.0
V)
Normal
(40)
(20
Hz
-
20
kHz,
0.05
%
THO)
.
(20)
(1
kHz,
0.5
%
THO)
..
Bridged
(40)
(1
kHz,
0.5
%
THO).
.
Rated
Power
Output
(+B
=
14.4
V)
Normal
(40)
(20
Hz
-
20
kHz,
0.05
%
THO)
..
(40)
(OIN
:
45324
,
+B
=
14.4V)
..
(2
0)
(1
kHz,
0.5
%
THO)
.
Bridged
(40)
(1
kHz,
0.5
%
THO)
Sensitivity (rated output)
(MAX.)
.
(MIN.)
.
Input Impedance
.. ..
Low
Pass
Filter Frequency
(24
dB/oct.) .
High
Pass
Filter Frequency
(12
dB/oct.) .
Infrasonic Filter Frequency
(24
dB/oct.)
..
Frequency
Response
(+0,
-3
dB)...
..
.
Signal
to
Noise
Ratio
.........
KAC-PS521
1000W .
125
W x 2
125
W x 2
250W x 2
500W
xl
0.2V
5.0
V
10
kO
50
-
200
Hz
(variable
50
-
200
Hz
(variable)
15
Hz
5
Hz;...
70
kHz
105
dB
Amplifier Control Section (EQ) KAC-X621/PS621
Bass
frequency.........
..
60/80/
100/
200
Hz
Bass
level........
.
..
-15
- +
15
dB
Bass
Q factor...
..
1.00
/ 1.25/ 1.50/2.00
Treble
frequency..
..
10
/12/15/17
kHz
Treble
level.....
..
-15
- +
15
dB
KAC-X521/PS521
60
/
80
/
100
1200
Hz
-15
~
+15
dB
1.00/
1.25
/ 1.50/
2.00
10
!
12
/
15
/ 17kHz
-15
-
+15
dB
Weight
..
Installation
Size
(W
x H x 0)
..
General KAC-X621/PS621
Operating Voltage
..
14.4
V
(11
-
16
Vallowable)
Current Consumption
(+B
=
12.0
V,
1
kHz,
10
%
THO,
4
0).....
..
, .40 A
Dimensions
(W
x H x 0)
..
446
x
61
x
259.5
mm
17-5/8 x 2-3/8 x 10-3/16 inch
....................
446
x
61
x
265
mm
17-5/8 x 2-3/8 x 10-3/8 inch
.....
4.42
kg
(9.74
Ibs)
KAC-X521/PS521
14.4
V
(11
-
16
V allowable)
37
A
386
x
61
x
259.5
mm
15-3/16 x 2-3/8 x 10-3/16 inch
386
x
61
x
265
mm
15-3/16 x 2-3/8 x 10-3/8 inch
3.83
kg
(8.44
Ibs)
English
9
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