Infinity Compositions Series User manual

Compositions Series
Overture 1
Powered Loudspeakers
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 797
REV 0 2/00

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TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
WIRING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
OPERATING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
REPLACING THE FUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
CARE OF YOUR SPEAKER SYSTEM/TROUBLESHOOTING . . . . . . . . . . . . . . . . . .8
MECHANICAL/PACKAGING PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE BULLETIN INF9704 NOV. 997 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SERVICE BULLETIN INF9705 NOV. 997 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OVERTURE TECH TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TEST SET UP AND PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DISSASSEMBLY PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PCB DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ELECTRICAL PARTS LIST ( 20V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
ELECTRICAL PARTS LIST (230V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC . . . . . . . . . . . . . . . . . .27
20V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
230V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

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Specifications
Frequency Response: 35Hz - 20,000Hz (±3dB)
Recommended Amplifier Power Range 10-100 watts*
Amplifier Peak Output: 250VA
Maximum Output: 108 dB SPL
Sensitivity: 92dB 2.83V @ 1 meter (anechoic
conditions)
Nominal Impedance: 8Ω
Crossover Frequencies: 300 and 3,000Hz
Low-Frequency Driver: 8” (203MM) high-efficiency, ultralinear,
long-throw, magnetically shielded
woofer.
Mid-Bass Driver: (2) 4” (101mm) high-efficiency,
magnetically shielded midrange drivers
High-Frequency Driver: 1” (25mm) soft dome, high-efficiency,
neodymium magnet, magnetically
shielded tweeter
Dimensions (H x W x D): 12-1/2"H x 5-3/4"W x 12-1/2"D
(318mm x 146mm x 318mm)
Weight: 28.5 lb (13.0 kg) Each
Power Consumption: 150 watts (Maximum)
7 watts (Standby)
* 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.

Detailed Specifications
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Wiring The System

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Operating The System

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Replacing The F se

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Care Of Yo r Speaker System/Tro bleshooting

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Mechanical/Packaging Parts List
1 CABINET NOT FOR SALE
2 SCREW, 8-32 x1/2 6 60673
3 1” (25mm) HIGH FREQUENCY TRANSDUCER, DCR=4.0 Ohms±10% 1 333232-001
4 WOOFER GRILLE 1 330956-001
5 MD/TWT ISOLATOR CUP 1 331914-001
6 FRONT BAFFLE 1 331181-001
7 SCREW, 6-32 x 3/8, PPHMS, CADCAD PLATED 8 10811
8 OVERTURE 1 AMPLIFIER 1 NOT FOR SALE
9 BAR 1 332091-001
11 SCREW, 6-32 x .5, MS, PPH, BLACK 6 900301-008
12 NUT, 8-32, KEP HEX, ZINC 2 907102-001
13 DACRON-1407 63991
14 WOOFER
(120v) 8” (203mm) WOOFER, DCR=14.1 Ohms±10% 1 331663-001*
(230v) 8” (203mm) WOOFER, DCR=28.0 Ohms±10% 1 333385-001
15 4” (101mm) MIDRANGE TRANSDUCER, DCR=7.3 Ohms±10% 2 330638-001
16 FOAM, MIDRANGE CUP 2 324324-001
17 GRILLE RETAINER, KIT, (4 PCS) 1 332162-001
18 GASKET, WOOFER 2 332204-001
19 WASHER, #6, FL 4 11638
20 CLAMP, WOOFER 6 332032-001
21 CROSSOVER NETWORK (120V) 1 331211-001
CROSSOVER NETWORK (230V) 1 333580-001
22 GAIN KNOB 1 146-8021
23 INPUT BINDING POST (RED) 1 331723-001
24 INPUT BINDING POST (BLACK) 1 331724-001
25 LOGO 1 332622-001
26 FRONT GRILLE 1 331185-001
PACKAGING
27 FOAM END PAD TOP AND BOTTOM 2 331213-001
28 FRONT GRILLE 1 331185-001
29 ACCESSORY KIT (See separate parts below) N/A
FOOT W/ ADHESIVE 332337-001
RUBBER FRONT FOOT 332068-001
FOOT, BUMP-ON, SQ, BLK. 1/8 X ½” 332182-001
FOOT, BUMP-ON, SQ, BLK. 1/4 X ½” 332183-001
SLOT PLUG 332067-001
FUSE 3A SLO-BLO 250V (120V) 1 331630-001
FUSE 1.6A SLO-BLOW 250V (230V) 1 333398-001
30 OUTER CARTON, (120V) 1 331212-001
OUTER CARTON, (230V) 1 333393-001
31 BAG, ZIPLOCK 1 315953-001
32 OWNER’S MANUAL (120V) 1 331214-001
OWNER’S MANUAL (230V) 1 333390-001
33 SURVEY CARD 1 330033-001
34 SAFETY SHEET 1 330100-001
Optional Center Stand 1 332518-001
Optional wall mount bracket can be obtained from:
OMNIMOUNT CO.
Model 100 WIN-1
OMNIMOUNT phone# [phone]
* 8” WOOFER (120v) part# 331663-001 represents the latest revision of low frequency transducer.
Earlier version, cast frame 8” WOOFER, part# 331284-001 is NLA.
Ref No. Description Qty Part No.

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Exploded View
INFINITY SYSTEMS, INC.PROPRIETARY
This document contains confidential
and proprietary information thatis
the property of Infinity Systems,Inc.
and may not be disclosedtoor
duplicated for others except as authorized
by Infinity Systems,Inc.
1
4
5
6
9
15 2 PL
8
20 11 2PL
11
7
4 PL
8 PL
12 2 PL
13
14
16 2 PL
6 PL
17
6 PL
2
18
4 PL
19
00395
SEE REAR
VIEW
BELOW
REAR VIEW
(AMP-WFR)
(AMP-XVR)
3
21
26
22
25
23
24
(2 PCS)

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Packaging
30
28
34
33
32
31
27
29
2 PL
(TOP OF CARTON)
00396

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2

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3

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Test Set Up and Proced re
SIGNAL
GENERATOR
AMPLIFIER
AC VOLT
METER (10V) OVERTURE 1
UNDER TEST
SPEAKER
OUTPUT
FROM
AMPLIFIER
00418

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Dissassembly Proced re

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Amplifier PCB Components Side

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Bass Amplifier PCB Solder Side

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Bass Amplifier PCB Component Side Silkscreen

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Electrical Parts List (120v)
Part# Qty Description Ref Designation
Semiconductors
DI1004 1 DIODE ZENER 6.2V 1/2W T/R ZD2
DI1060 9 Diode Switching 500mW 75V D1-2, 4-5, 6-9, 11
DI1089 1 Diode 1N4003 D10
DI1101 2 DIODE ZENER 10V 1/2W T/R ZD3, 5
CI1186 1 Diode Zener 36V 5% 5W T/R ZD1
DI1187 1 Di, Bridge Power 400v/8A D18
IC1045 1 Three-Term. Adj. Pos. V R LM317T U4
IC1215 2 IC TL064CN Quad OP AMP U1-2
IC1216 1 IC TL062CP Dual OP Amp. U3
TR1002 3 NPN Transistor TO-92 2N3904 Q1, 5, 7
TR1017 4 Transistor PNP T/R 2N3906 Q2-3, 6, 8
TR1257 2 MOSFET Power IRFS250 Q13-14
TR1259 3 NPN 300V/0.5A/20W BF469 Q4, 9, 12
TR1260 1 PNP 300V/0.5A/20W BF470 Q10
LE1034 1 Led Green/Red Common Cathode LED1
TR1304 1 NPN 60V/3A 25W 2SD2012 Q11
Capacitors
CP1126 1 CAP POLY FILM 1uF 10% 50V C19
CP1630 1 Cap. Alum El. 220uF 20% 25v C20
CP1656 1 Cap. Alum El. 100uF 20% NPE 25V T/R C2
CP1657 1 Cap. Alum El. 220uF 20% NPE C3
CP1658 4 Cap. Disc 100pF 10% 500V Y5P C4, 12, 14, 30
CP1659 1 Cap. NPE 10uF 20% 25V T/R C11
CP1660 2 Cap. Alum El. 1000uF 20% 200V 85C C15, 35
CP1661 1 Cap. Alum El. 100uF 20% 50V T/R C16
CP1662 5 Cap. Alum El. 10uF 20% 35V T/R C17-18, 22-23, 25
CP1663 1 Cap. Alum El. 47uF 20% 25V C21
CP1664 2 Cap. Alum El. 4.70uF 20% 63V T C24, 29
CP1665 1 Cap. Alum El. 10uF 20% 63V T/R C28
CP1666 2 Cap Cer Disc 68pF 20% 500V T/R C31-32
CP1667 1 Cap. Poly Fil. 0.47uF 10% 250V C33
CP1668 1 Cap. Alum El. 47uF 20% 100V C36
CP1669 1 Cap. Poly Fil. .10uF 10% 400V C40
CP1670 1 Cap. Poly Fil. .039uF 5% 50V C41
CP1672 3 Cap Poly 0.22uF 5% 63V T/R C5-6, 13
CP1673 1 Cap Poly Fil. 1uF 10% 50V C26
CP1674 1 Cap. Alum El. 1uF 20% 50V C27
CP1675 7 Cap. Poly Fil. 0.1uF 5% 5W C7, 9-10, 37-39, 42