2
Technical Manual
IRS Sigma
Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
07/00
+-
+
-
+
40" BLK
40" RED
+
TR1
6.8 ohms
5 WATTS
TR2
6.8 ohms
5 WATTS
TC1
1.8 uF
POLYP
TC2
1.8 uF
POLYP
TL1
0.15 mH
TC3
5.1 uF
POLYP
TL2
1.36 mH
TR3
JUMPER
REV 1
+
H.F.
60" BLUE
62" GREEN
-
ML1
0.43 mH
MR2
0.91 ohms
5 WATTS
MR1
0.91 ohms
5 WATTS
+
-
MC2
16.0 uF
POLYP
MC1
16.0 uF
POLYP
ML2
0.45 mH
49" ORANGE
49" WHITE
-
+
M. F.
MC3
5.1 uF
POLYP
MC4
18.0 uF
100v
MC5
68.0 uF
POLYP
ML3
0.10 mH
MC6
3.0 uF
POLYP
BC4
155.0 uF
100v
BC3
5.1 uF
POLYP
BC2
97.0 uF
100v
-
+
BR1
3.0 ohms
25 WATTS
BL1
3.10 mH
BC1
5.1 uF
POLYP
BC7
2.0 uF
POLYP
BL2
2.00 mH
35" BROWN
-
BC6
120.0 uF
100v
BL3
1.00 mH
33" YELLOW
M.B.F.
+
BC5
5.1 uF
POLYP
BC8
18.0 uF
100v
WC4
250.0 uF
100v
+
-
WC1
600.0 uF
100v
WL1
6.40 mH
WC3
700.0 uF
100v
40" RED
40" BLACK
WL3
15.0 mH
WC2
700.0 uF
100v
L.F.
-
+
WL2
3.50 mH
WR2
1.5 ohms
25 WATTS
WR1
3.6 ohms
50 WATTS
A
B
30" RED
35" GRAY
IRS Sigma
INPUT ASSY
A017-7399
WOOFER
NETWORK/BOARD
A017-7398
+
-
HIGH
FREQUENCY
TRANSDUCER'S
902-5228
MID-BASS
TRANSDUCER
902-7379
MID
FREQUENCY
TRANSDUCER
902-5339A
WHITE
ORANGE
+-
GRAY
RED
00204
MIDRANGE/TWEETER PCB SCHEMATIC
MIDBASS PCB SCHEMATIC
WOOFER BOARD SCHEMATIC
Input From
Switchboard
Input From
Switchboard
16" BLUE
16" GREEN
16" WHITE
16" ORANGE
Input From
Switchboard
16" YELLOW
16" BROWN
25" RED
25" BLACK
Input From
Switchboard
TR3 1.0 ohms
5.0 Watts
REV 0
TO SWITCH
BOARD
MIDBASS
NETWORK
A020-7397
MID/TWT
NETWORK
A020-7396
RED
BLACK
ORANGE
WHITE
GREEN
BLUE
BROWN
YELLOW
YELLOW
BROWN
-
GREEN
BLUE
LOW FREQUENCY
TRANSDUCER
902-7502
FRONT
REAR
-
FRONT
TWEETER
-
+
REAR
TWEETER
R1
8.0 ohms
5 WATTS
IRS
Sigma
WIRING DIAGRAM
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