Infinity Kappa 255A, Service Manual

Page: 5 / 46

Enclosed are several diagrams to help you plan your own
system installation. Figures 1 through 3 (
on pages 4 and 5)
show how to configure the Kappa 255a to drive front and
rear speakers and a subwoofer, tweeters and midrange
speakers and a pair of subwoofers, and a tweeter/midrange
component set, midbass speakers, and a subwoofer.
For system expansion, see Figure 4 on the next page.
NOTE: For simplicity, Figures 1 through 4 do not show power,
remote, and input connections.
R – – – + + +
L
R – – + +
L
KAPPA 255a
(front panel)
KAPPA 255a
(rear panel)
REM
–
R
+ – +
L
SUBWOOFER 1 and 2
are common outputs
and are supplied as
a convenience for
dual-subwoofer
applications
Subwoofer
LR
- +
+
-
+
-
RR LF
+
-
RF
+
-
ST
BR
HP
FLAT
LP
.25V
9V G
A
I
N
G
A
I
N
G
A
I
N
M
O
D
E
M
O
D
E
O
U
T
P
U
T
C
R
O
S
S
O
V
E
R
.25V
9V
.25V
9V
80Hz
20Hz
320Hz
32Hz
60
Hz
Q
FREQ
REAR
INPUT
SUB
INPUT
MIN
MAX
320Hz
32Hz
320Hz
32Hz
FRONT LP
EXT
INT
EXT
ST
BR
SUBWOOFER FRONT REAR
O
U
T
P
U
T
C
R
O
S
S
O
V
E
R
D
B
O
X
O
V
E
R
HP
FLAT
LP
x1
x15
Set Switches As Shown
(set controls for your system plan)
Set to EXT for
source unit with
subwoofer outputs
KAPPA 255a
(top panel)
Figure 1. This wiring diagram shows
a Kappa 255a amplifier driving front
and rear pairs of full-range speakers
and a single subwoofer.
R
– – – + + +
L R
– – + +
L
KAPPA 255a
(front panel)
KAPPA 255a
(rear panel)
REM – R + – +
L
+
-
+
-
LF
Tweeter
+
-
RF
Tweeter
RR
Mid
LR
Mid
+
-
+
-
Subwoofer
(4
Ω
min.)
Subwoofer
(4
Ω
min.)
+
-
ST
BR
HP
FLAT
LP
.25V
9V G
A
I
N
G
A
I
N
G
A
I
N
M
O
D
E
M
O
D
E
O
U
T
P
U
T
C
R
O
S
S
O
V
E
R
.25V
9V
.25V
9V
80Hz
20Hz
320Hz
32Hz
60
Hz
Q
FREQ
REAR
INPUT
SUB
INPUT
MIN
MAX
320Hz
32Hz
320Hz
32Hz
FRONT LP
EXT
INT
EXT
ST
BR
SUBWOOFER FRONT REAR
O
U
T
P
U
T
C
R
O
S
S
O
V
E
R
D
B
O
X
O
V
E
R
HP
FLAT
LP
x1
x15
Set Switches As Shown
(set controls for your system plan)
Set to EXT for
source unit with
subwoofer outputs
FRONT LP creates
bandpass when rear
output is set to HP
KAPPA 255a
(top panel)
Figure 2. This wiring diagram shows a
Kappa 255a amplifier driving a pair of
tweeters, a pair of midrange speakers,
and a pair of subwoofers (4
Ω
minimum).
A P P L I C A T I O N S