Infinity Overture 3 Compositions Series Service Manual

Compositions Series

Overture 3

Powered Loudspeakers

Service Manual

Infinity Systems, Inc

250 Crossways Park Dr.

Woodbury, New York 11797

Rev1 5/2004

Overture 3

TABLE OF CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . ……. . . . .3

DETAILED SPECIFIC ATI ONS . . . . . . . . . . . . . .. . . . . . . . . . …… . . . . .4

WIRING THE SYSTEM . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . …….. . . . .5

OPERATING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . ……. . . . .6

REPLACING THE FUSE . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . ……. . . .7

CARE OF YOUR SPEAKER SYSTEM/TROUBLESHOOTING . ….…. .10

MECHANICAL/PACKAGING PARTS LIST . . . ……….……………... . . .11

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . …………... . . . . . . .12

PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ……. . . . . . . . . .13

SERVICE BULLETIN INF9704 NOV. 1997 …………………………….....14

SERVICE BULLETIN INF9705 NOV. 1997 . . .. . . . . …………. . . . . . . .16

SERVICE BULLETIN INF9802 JUNE 1998. . .. . . . . …………. . . . . . . .17

TEST SET UP AND PROCEDURE . . . . . . . . ........................................18

NOTE ON OVTR 2/3 AMPLIFIER REVISION……………………………..19

PCB DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . ……... . . . . . . . . . . . .20

ELECTRICAL PARTS LIST (120V) . . . . . .. . . . . . . …………………. . . .22

ELECTRICAL PARTS LIST (230V) . . . . . . . . . . . . . . . . …... . . . . . . . . .25

INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . ……. . . . . . . . . .28

WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC (120V) . . .29
WIRING DIAGRAM/CROSSOVER NETWORK SCHEMATIC (230V) . . .30

120V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . … . . . .31

230V SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . .. . . . …….. . . . . . . . .34

Infinity continually strives to update and impr ov e exi sti ng pr oduc ts, as well as create new ones. The
specifications and construction details in this and related Infinity publi c ations are therefore subject to
change without notice.

2

Overture 3

3

Specifications

Overture 3 Frequency Response: 25Hz - 20,000Hz (±3dB)
Recommended Amplifier Power Range 10-200 watts*
Amplifier Peak Output: 500VA
Maximum Output: 115 dB SPL
Sensitivity: 94 dB 2.83V @ 1 meter
Nominal Impedance: 8Ω

Crossover Frequencies: 350 and 3,000Hz
Low-Frequency Driver: (4) 6-1/2” (165mm) high efficiency,

dynamically balanced, magnetically
shielded woofers.

Midrange Driver: (2) 5-1/4” (125mm) high-efficiency,

magnetically shielded midrange drivers.

High-Frequency Driver: (1) 1” (25mm) soft dome, high-

efficiency, neodymium magnet,
magnetically shielded tweeter.

Dimensions (H x W x D): 46" x 6-7/8" x 15-3/4"

(1,168mm x 175mm x 400mm)

Weight: 59 lb/(26.8 kg)
Power Consumption: 300 watts (Maximum)

* 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

Overture 3

4

Overture 3

5

Wiring The System

Overture 3

6

Operating The System

Overture 3

7

Operating The System/Replacing The Fuse

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8

Replacing the Fuse (Cont.)

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9

Replacing The Fuse (Cont.)

UTILSER UN FUSIBLE DE
RECHANGE DE MEME TYPE ET
CALIBRE

FOR CONTINUED PROTECTION AGAINST
RISK OF FIRE, REPLACE ONLY WITH SAME
TYPE OF FUSE: T1.6A 250V

CAUTION:

ATTENTION:

POWER FUSE

T 1.6A 250V

~ 230V 50Hz

150W MAX

00435

F

U

S

E

F

U

S

E

FUSE T3, 1.6A
250V

OVTR 2 & 3 FUSE

Overture 3

10

Troubleshooting

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Mechanical Parts List

Ref No. Description Qty Part No.

1 CABINET NOT FOR SALE
2 6.5”, WOOFER, B160-4 (120V) DCR = 14.2Ω±10% 4 330618-001

6.5”, WOOFER, LM-B160-8 (230V) DCR = 40Ω±10% 4 333773-001
3 SCREW, #8 x .75”, PPH, ZINC 25 900102-012
4 REAR WOOFER GRILLE 2 330955-001
5 FRONT/REAR WOOFER BAFFLE 4 332334-001
6 AMPLIFIER CAP 1 331399-001
7 CROSSOVER NETWORK (120V) 1 334416-001
8 BASE, FRONT FOOT 1 331184-001
9 REAR BASE 1 331075-002

10 REAR BASE w/PORT 1 331236-001
11 BINDING POST (RED) 1 331723-001
12 BINDING POST (BLACK) 1 331724-001
13 SCREW, #8 x 1” PPH, ZINC 15 900102-016
14 SCREW, #6-32 x 3/8” PPHMS CADCAD PLATED 2 10811
15 AMPLIFIER 1 NOT FOR SALE
16 1” (25MM) NEODYMIUM TWEETER DCR = 3.6Ω±10% 1 333232-001
17 UPPER FRONT BAFFLE (120V) 1 331182-001

UPPER FRONT BAFFLE (230V) 1 332335-002
18 FRONT GRILLE 1 333584-001
19 SCREW, #6 x 3/4” PPHD, BLK 20 63563
20 SCREW, 4-40 x .25” PPH, ZINC 2 905502-004
21 5.25”,MIDRANGE TRANSDUCER, B125-6 DCR = 7.7Ω±10% 2 330650-001
22 MIDRANGE CUP (120V) 1 330833-001
23 HI-FREQ. TWEETER GASKET 1 331725-001

PACKAGING

24 SPIKE FOOT SET, 1.5” 1 331360-001
25 OUTER CARTON (120V) 1 331246-001
26 FOAM PAD, TOP 1 331254-001
27 FOAM PAD, BOTTOM 1 331255-001
28 SURVEY CARD 1 330033-001
29 OWNER’S MANUAL (120V) 1 332293-001
30 SAFETY SHEET 1 330100-001
31 LINE FUSE 5A 2AG SLO-BLO (120V) 2 FS1068 or 331925-001