Infinity Overture 3 Compositions Series Service Manual
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Infinity Overture 3 Compositions Series Service Manual

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Compositions Series
Overture 3
Powered Loudspeakers
Service Manual
Infinity Systems, Inc
250 Crossways Park Dr.
Woodbury, New York 11797
Rev1 5/2004

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  • Page 1 Compositions Series Overture 3 Powered Loudspeakers Service Manual Infinity Systems, Inc 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 5/2004...

  • Page 2: Table Of Contents

    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.

  • Page 3: Specifications

    Overture 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”...

  • Page 4: Detailed Specifications

    Overture 3 Detailed Specifications...

  • Page 5: Wiring The System

    Overture 3 Wiring The System...

  • Page 6: Operating The System

    Overture 3 Operating The System...

  • Page 7: Replacing The Fuse

    Overture 3 Operating The System/Replacing The Fuse...
  • Page 8 Overture 3 Replacing the Fuse (Cont.)
  • Page 9 Overture 3 Replacing The Fuse (Cont.) POWER FUSE ~ 230V 50Hz T 1.6A 250V 150W MAX ATTENTION: CAUTION: UTILSER UN FUSIBLE DE FOR CONTINUED PROTECTION AGAINST RECHANGE DE MEME TYPE ET RISK OF FIRE, REPLACE ONLY WITH SAME CALIBRE TYPE OF FUSE: T1.6A 250V FUSE T3, 1.6A 250V OVTR 2 &...

  • Page 10: Care Of Your Speaker System/Troubleshooting

    Overture 3 Troubleshooting...

  • Page 11: Mechanical/Packaging Parts List

    Overture 3 Mechanical Parts List Ref No. Description Part No. CABINET NOT FOR SALE 6.5”, WOOFER, B160-4 (120V) DCR = 14.2Ω±10% 330618-001 6.5”, WOOFER, LM-B160-8 (230V) DCR = 40Ω±10% 333773-001 SCREW, #8 x .75”, PPH, ZINC 900102-012 REAR WOOFER GRILLE 330955-001 FRONT/REAR WOOFER BAFFLE 332334-001...

  • Page 12: Exploded View

    Overture 3 Exploded View...

  • Page 13: Packaging

    Overture 3 Packaging...

  • Page 14: Service Bulletin Inf9704 Nov. 1997

    Overture 3...
  • Page 15 Overture 3...

  • Page 16: Service Bulletin Inf9705 Nov. 1997

    Overture 3...

  • Page 17: Service Bulletin Inf9802 June 1998

    Overture 3...

  • Page 18: Test Set Up And Procedure

    Overture 3 Test Set Up and Procedure AC VOLT METER (10V) OVERTURE 3 SIGNAL UNDER TEST GENERATOR SPEAKER AMPLIFIER OUTPUT FROM AMPLIFIER SYSTEM AURAL SWEEP TEST Equipment needed: • Function/signal generator/sweep generator • High Gain Integrated Amplifier • Multimeter • Speaker cables General Unit Function (UUT = Unit Under Test) 1.

  • Page 19: Note On Ovtr 2/3 Amplifier Revision

    Overture 3 IMPORTANT NOTE ON OVTR 2/3 AMPLIFIER REVISION There was an early version of the Overture 2 and 3 Amplifier that is represented slightly inaccurately in the schematic, PCB drawings, and parts list in this service manual. This page is a guide to the identification and differences to this earlier version. The drawing below is a later version of the PCB, complete with this information.

  • Page 20: Pcb Drawings

    Overture 3 Amplifier PCB Solder Side...
  • Page 21 Overture 3 Bass Amplifier PCB Component Side Silkscreen...

  • Page 22: Electrical Parts List (120V)

    Overture 3 Electrical Parts List (120V) Part# Description Ref Designation Capacitors CP1126 Cap Poly Film 1uF 10% 50V CP1630 Cap Alum EL 220uF 20% 25v CP1656 Cap Alum EL 100uF 20% NPE CP1657 Cap Alum EL 220uF 20% NPE CP1658 Cap Disc 100pF 10% 500V C4,12,14,30 CP1659...
  • Page 23 Overture 3 Electrical Parts List (120V) Part# Description Ref Designation RS1351 RES M/F 13Kohm 1% 1/4W R9,10,20,48 RS1353 RES M/F 3.01Kohm 1% 1/4W R50,51,57 RS1355 RES M/F 4.75Kohm 1% 1/4W RS1357 RES M/F 100 ohm 1% 1/4W RS1370 RES M/F 3.57Kohm 1% 1/4W RS1455 RES M/F 150Kohm 1% 1/4W R35,36,49...
  • Page 24 Overture 3 Electrical Parts List (120V) Part# Description Ref Designation XX1278 Cntrl Pnl Plstc XX1279 or 331944-001 KNOB FOR GAIN POTENTIOMETER XX1280 Power Cord 12Ft 16AWG XX1284 Strain Relief Black XX1302 Logo-Led Plate BR1415 Plate Top FH1004 Fuseholder 2AG Chassis Mo FS1068 or 331925-001 LINE FUSE 5A 2AG SLO-BLO (120V) HS1145...

  • Page 25: Electrical Parts List (230V)

    Overture 3 Electrical Parts List (230V) Part# Description SEMICONDUCTORS DI1186 Diode Zener 36V 5% 5W T/R DI1224 DIODE PWR RECT 800V/3A IC1045 Three-Term. Adj. Pos. V R LM317T IC1215 IC TL064CN Quad OP AMP IC1216 IC TL062CP Dual OP Amp TR1304 Transistor NPN 60V/3A 25W 2SD2012 TR1002...
  • Page 26 Overture 3 Electrical Parts List (230V) Part# Description RS2300 RES M/F 374Kohm 1% 1/4W RS2302 RES M/F 4.42Kohm 1% 1/4W RS2303 RES M/F 39.2Kohm 1% 1/4W RS2304 Res Fuse 2Kohm 5% 1/3W T/ RS2305 Res Fuse 75 ohm 5% 1/3W T RS2306 Res Fuse 6.8Kohm 5% 1/3W RS2307...
  • Page 27 Overture 3 Electrical Parts List (230V) Part# Description SP1092 NYLON STANDOFF ST1022 Standoff #6 x 5/16 Nylon WA1085 WASHER #6 INTERNAL STAR XX1278 Cntrl Pnl Plstc 97 XX1279 or 331944-001 Knob for Gain Potentiometer XX1284 Strain Relief Black XX1302 Logo-Led Plate XX1340 HOLE PLUG TE1214...

  • Page 28: Integrated Circuit Diagrams

    Overture 3 Integrated Circuit Diagrams...

  • Page 29: Wiring Diagram/Crossover Network Schematic (120V)

    Overture 3 Wiring Diagram/Crossover Network Schematic (120V) WIRING DIAGRAM (120V) NETWORK 334416-001 GRN/BLK MIDRANGE TRANSDUCER (2) 330650-001 GRN/BLK BLU/BLK WOOFER (4) 330618-001 TWEETER 333232-001 AMPLIFIER + YEL - YEL/BLK YEL/BLK CROSSOVER NETWORK 68 uF SCHEMATIC (120V) 0.61 mH .250 .250 16 uF 300 uF 30 uF...

  • Page 30: Wiring Diagram/Crossover Network Schematic (230V)

    Overture 3 Wiring Diagram/Crossover Network Schematic (230V) NETWORK MIDRANGE TRANSDUCER (2) 330650-001 BLU/BLK WOOFER (4) 330618-001 AMPLIFIER + YEL - YEL/BLK YEL/BLK 6 PIN HEADER CROSSOVER NETWORK 200 uF 200 uF 0.61 mH SCHEMATIC (230V) .250 30 uF 300 uF 100V 30 uF 100V...

  • Page 31: 120V Schematics

    Overture 3 120V POWER SUPPLY...
  • Page 32 Overture 3 120V FILTER/CONNECTORS...
  • Page 33 Overture 3 120V AMPLIFIER...

  • Page 34: 230V Schematics

    Overture 3 230V POWER SUPPLY...
  • Page 35 Overture 3 230V FILTER/CONNECTORS...
  • Page 36 Overture 3 230V AMPLIFIER...

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