Infinity Overture 3 Compositions Series User manual

Compositions Series
Overture 3
Powered Loudspeakers
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 797
Rev1 5/2004

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 . ….…. .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 improve existing products, as well as create new ones. The
specifications and construction details in this and related Infinity publications are therefore subject to
change without notice.
Overture 3
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/ eplacing The Fuse

Overture 3
8
eplacing the Fuse (Cont.)

Overture 3
9
eplacing 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
0
Troubleshooting