Infinity IRS Sigma Service manual
30" x 30"
PLASTIC SHEET
955-7224
WARRANTY
(5/1) CARD
940-7670
IRS SIGMA,
OWNERS MANUAL,
930-7400
SETUP
INSERT SHT
930-7948
FOAM, TOP
951-7057
FOAM,
BOTTOM
951-7058
00202
CLOTH
SHEETING
990-7169 (2)
MICROFOAM
951-2830 (4)
CLOTH
SHEETING
990-7169 (2)
MICROFOAM
951-2830 (4)
IRS SIGMA
CARTON
946-7369
Technical Manual
IRS Sigma
Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
07/00
+
SR2
1.0 ohms
5 WATTS
SR1
1.1O ohms
5 WATTS
SW1
+
FLAT
-
SR4
1.20 ohms
5 WATTS
SR6
1.10 ohms
5 WATTS
SR3
1.20 ohms
5 WATTS
SR5
1.10 ohms
5 WATTS
SW2
FLAT
-
SR7
1.00 ohm
15 WATTS
-
+
-
+
SW3A
+
-
SW3B
+
B
A
+
-
Mid/Twt PCB
Mid/Twt PCB
-
MIDBASS
WOOFER
SECTION
00203
HIGH
FREQUENCY
INPUT
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
l Nominal Impedance: 49
l Max Amp Power 500 watts*
l Frequency Response 30 Hz - 42,000Hz (E2dB)
l Sensitivity: 87dB (1 watt @ 1 meter)
l Crossover Frequency: 160Hz, 600Hz, 3800Hz
SYSTEM COMPONENTS:
l Cabinet IRS Sigma (Not for Sale)
l Front Grille, w/logo A026-7280
l Lower Rear Grille A026-7354
l Upper Rear Grille A026-7086
l Low-Frequency Transducer: 12”(304mm) Woofer (902-7502),
330709-001
DC Resistance 3.7 ohms E10%
l Mid-Bass Transducer: 6 1/2”(165mm)Mid-Bass Coupler
(902-7379)
DC Resistance 3.6 ohms E10%
l Mid Frequency Transducer: Neodymium Emim
(902-5339A)
DC Resistance 3.7 ohms E10%
l High-Frequency Transducer (2): Emit-B Neodymium
(902-5228)
DC Resistance 3.9 ohms E10%
l Crossover Network Input Assembly (A017-7399)
Woofer Network/Board (A015-7398)
Mid-Bass PCB (A020-7397)
Tweeter/Midrange PCB (A020-7396)
AURAL SWEEP TEST SPECIFICATIONS:
l System Aural Sweep Test 6.0V Input 30 Hz to 42 kHz
l L.F. Aural Sweep Test 6.0V Input 30 Hz to 500 Hz
l M.B. Aural Sweep Test 5.0V Input 100 Hz to 1 kHz
l M.F. Aural Sweep Test 4.0V Input 500 Hz to 4 kHz
l H.F. Aural Sweep Test 2.83V Input 3 kHz to 42 kHz
PHYSICAL SPECIFICATIONS:
l Enclosure dimensions: 58 1/4” x 18 1/2
” x 16-1/4” (H x W x D)
(1422 x 457 x 406mm)
l Weight 195 lbs (88.6 kg) Each
WARRANTY:
l Refer to Warranty Statement packed with each product.
* The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels.
PACKING
SWITCHBOARD PCB
SCHEMATIC
IRS Sigma
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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