Infinity Beta SW Series Service Manual

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Beta
SW Series
SW-12 Subwoofer
SERVICE MANUAL
Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
Rev1 3/2006

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  • Page 1 Beta SW Series ™ SW-12 Subwoofer SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 3/2006...
  • Page 2: Table Of Contents

    (425mm x 378mm x 505mm) Weight: 45 lb (20.5 kg) 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: Detailed Specifications

    SW-12 SW-12 300W Powered Sub/ Plate Amp LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes US 120vac/60Hz 108-132 Vrms Normal Operation EU 230vac/50-60Hz 207-264 Vrms Normal operation, MOMS required QA Test Parameter Specification Unit Limits Conditions Notes Amp Section Bridge type amplifier, None of the speaker terminals must be connected to system GND at Type (Class AB, D, other) any time.
  • Page 4: Amplifier Access

    SW-12 QA Test Parameter Specification Unit Limits Conditions Notes Line In (L,R) & LFE functional Dual RCA jack, Lor R is used in LFE mode Spkr/Hi Level In functional Binding post connector L&R Signal Sensing (ATO) Auto-Turn-On (yes/no) functional Auto - on selection switch in Auto functional ATO Input test frequency "...
  • Page 5: Controls And Connections

    DE CHOC ÉLECTRIQUE, ÉVITER D'EXPOSER CET APPAREIL A LA ‹ PLUIE OU A L'HUMIDITÉ. P/N:352153-001 HIGH ¤ LEVEL Infinity Systems Northridge, CA USA 120V ~ 60HZ 500W Bass Optimization Controls (see page 5) ∞ Phase Switch ¡ Bass Optimization System Selector §...
  • Page 6 DE CHOC ÉLECTRIQUE, ÉVITER D'EXPOSER CET APPAREIL A LA PLUIE OU A L'HUMIDITÉ. P/N:352153-001 CROSSOVER LEVEL ® HIGH LINE LEVEL IN LEVEL SW-12 Infinity Systems Northridge, CA USA CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN 120V ~ 60HZ 500W HIGH WARNING: POWER...
  • Page 7: Operation

    SW-12 PERATION Power On Plug your subwoofer’s AC cord into a wall outlet. Do not use the Crossover Adjustments outlets on the back of the receiver. NOTE: This control will have no effect if the Normal/LFE Selector Initially set the Subwoofer Level (Volume) Control ª to the Switch §...
  • Page 8: Bass Optimization System

    “boomy” or “lumpy” bass can be truly aggravating over a It is a fact of audio that what we hear at low frequencies is period of time. Infinity’s Bass Optimization System can fix this. determined as much or more by the listening room than by the loudspeaker itself.
  • Page 9: Exploded View/Parts List

    9. Woofer, 12” Sub DCR=3.4 ohms ±10% 1 351511-001 5. Logo SW-12 351617-001 10. Grille Assembly, Frnt CSW-12 (Black) 352050-003 6. Foot Assembly, Rubber, 338037-002 (Beech/Cherry) 352050-004 Blk w/Threaded Insert 11. Port Tube SW-12 352179-001 Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797 6/04...
  • Page 10: Sw-12 Test Set Up And Procedure

    SW-12 SW-12 Test Set Up and Procedure SYSTEM AURAL SWEEP TEST Equipment needed: • Function/signal generator/sweep generator • Integrated Amplifier • Multimeter • RCA cables General Unit Function (UUT = Unit Under Test) Switches/knobs on the amplifier faceplate: Crossover Frequency Adjust full CW (150Hz) Phase switch –...
  • Page 11: Block Diagram

    SW-12...
  • Page 12: Electrical Parts List (120V)

    SW-12 SW-12 120v Electrical parts list Part number Description Reference Designator MAIN PCB Resistors 021-100401-020 MOF resistor 1K 1W J FK TYPE R173 021-470305-021 MOF resistor 470R 5W J 021-560305-020 MOF resistor 560R 5WS J 8x25 KINK 022-005105-020 Resistor PN:SQM 0R05 5W J 25x13 024-000098-120 SMD Resistor 0R 1/8W J 0805...
  • Page 13 SW-12 Part number Description Reference Designator MAIN PCB 051-005600-100 Transistor PNP PN:MPSW56RLRA TO-92 (ON) 051-290700-100 Transistor PNP (ON) PN:MPS2907A RLRA TO-92 Q12,14,16,18 051-540101-000 Transistor PNP(FAIRCHILD) PN:2N5401 TO-92 051-640001-000 MOSFET N-Channel PN:IRF640N TO-220 (IR) Q11,13,15,17 052-400080-000 Bridge Regulator PN:RS804 400V,8A 053-257400-100 IC;DIP,Regulator PN:LM2574 HVN-15V 8PIN (NS) 054-000100-100...
  • Page 14 SW-12 Part number Description Reference Designator PRE DRIVER PCB 024-470598-120 SMD Resistor 47K 1/8W J 0805 024-560598-120 SMD Resistor 56K 1/8W J 0805 024-680498-120 SMD Resistor 6K8 1/8W J 0805 R135,166 Capacitors 031-100244-100 SMD Ceramic Capacitor 0u01/50V K 0805 X7R C108,118,131,140 031-100343-100 SMD Capacitor...
  • Page 15 SW-12 Part number Description Reference Designator INPUT PCB ASS'Y (4 PCB's) 021-162398-100 MF resistor 162R 1/8W F R384 021-220598-100 MF resistor 22K 1/8W F R382 021-267498-100 MF resistor 2K67 1/8W F R336 021-340398-100 MF resistor 340R 1/8W F R357,371 021-357498-100 MF resistor 3K57 1/8W F R335...
  • Page 16 SW-12 Part number Description Reference Designator INPUT PCB ASS'Y (4 PCB's) 031-470444-101 SMD Capacitor 4700pF/50V K X7R 1206 C2G1 031-680444-100 SMD Capacitor 6800pF/50V K X7R 1206 C212 034-100515-300G Electrolytic Capacitor 10uF/16V M (R)0511 P:2 C220 034-100615-301 Electrolytic Capacitor 100uF/16V M (R)0611 P:5 C221 034-220516-301 Electrolytic Capacitor...
  • Page 17 SW-12 Part number Description Reference Designator 063-332108-900 Panel 12.83x8.33" t=.984" SPCC 071-060280-500 Washer 8#-32 8.5 t=3m/m 071-100606-060 Washer PN:WS3-2 OD=6 ID=3.t=2mm Q11,13 073-014044-000 Bracket 6.64"x3.50"x3.20" SPCC 074-020018-000 Rocker SW PN:RF1003-BB4-0 082-022611-000 Wire Set #26 UL1007 L=110mm blk+wht x6 XH7Px2 082-082620-000 Wire Set #26 UL1007 L=200mm XH8Px2 blk/wht 086-021836-000...
  • Page 18: Electrical Parts List (230V)

    SW-12 SW-12 230v Electrical parts list Part number Description Reference Designator MAIN PCB Resistors 021-100401-020 MOF resistor 1K 1W J FK TYPE R173 021-470305-021 MOF resistor 470R 5W J (NORMAL SIZE) 021-560305-020 MOF resistor 560R 5WS J 8x25 KINK 022-005105-020 Resistor PN:SQM 0R05 5W J 25x13 024-000098-120...
  • Page 19 SW-12 Part number Description Reference Designator MAIN PCB 054-555100-100 SMD Transistor (NPN) PN:MMBT5551 LT1 (ON) Miscellaneous 043-300101-000 INDUCTOR PN:YT-10033 30uH L9,10 043-560200-000 INDUCTOR 56uH YT-10779 043-700100-000 INDUCTOR 70uHx2 YT-10024 043-820300-000 INDUCTOR 820uH YT-10034 044-100100-000 SMD FERRITE BEAD PN:321611 600R/100MHz 1206 FB1,FB2 072-040008-110 8P Terminal Housing...
  • Page 20 SW-12 Part number Description Reference Designator PRE DRIVER PCB 054-540100-100 SMD Transistor (PNP) PN:MMBT5401 LT1 SOT-23 Q33,40 054-555100-100 SMD Transistor (NPN) PN:MMBT5551 LT1 (ON) Miscellaneous 072-040229-000 HEADER Right Angle PN:211-107-000-400 7PIN PIN2 072-040230-000 HEADER Right Angle PN:211-111-000-400 11PIN PIN1 INPUT PCB ASS'Y (4 PCB's) Resistors 021-100398-100 MF Resistor...
  • Page 21 SW-12 Part number Description Reference Designator INPUT PCB ASS'Y (4 PCB's) Capacitors 031-100244-101 SMD Capacitor 0u01/50V K 1206 X7R C12,13,224,280 031-100344-102L SMD Capacitor 0u1/50V K 1206 X7R C227,229,230,232-235 031-100344-104 SMD Capacitor 100pF/50V K NPO 1206 C204,222 031-100345-300 SMD Capacitor 0u1/50V M 1206 X7R C305,306 031-220344-103 SMD Capacitor...
  • Page 22: Pcb Drawings

    SW-12...
  • Page 23 SW-12...
  • Page 24 SW-12...
  • Page 25 SW-12 NOTE: DESIGNATORS ARE WRONG (SWAPPED) FOR L8 AND L11. BOTH DRAWING AND ACTUAL PCB ON MODEL FIFTEEN...
  • Page 26 SW-12...
  • Page 27 SW-12...
  • Page 28 SW-12...
  • Page 29 SW-12...
  • Page 30 SW-12...
  • Page 31: Semiconductor Pinouts

    SW-12...
  • Page 32: Schematics (120V)

    SW-12 85 ℃ 85 ℃ New DESIGN...
  • Page 33 SW-12 New DESIGN...
  • Page 34 SW-12 New DESIGN...
  • Page 35 SW-12 New DESIGN...
  • Page 36: Schematics (230V)

    SW-12 105 ℃ 105 ℃ New DESIGN CHANGE:R14,F1,C1,C4...
  • Page 37 SW-12 New DESIGN CHANGE:R14,F1,C1,C4...
  • Page 38 SW-12 New DESIGN CHANGE:R14,F1,C1,C4...
  • Page 39 SW-12 New DESIGN CHANGE:R14,F1,C1,C4...
  • Page 40: Packing

    5. Warranty Card, 3/5 Year, Infinity 352004-001 2. Owner’s Manual SW-12 352614-001 6. Spike Foot Set 338076-001 3. Outer Carton SW-12 (Black) 352151-001 Outer Carton SW-12 (Beech) 352151-002 Outer Carton SW-12 (Cherry) 352151-003 Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797 6/04...

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