Table of Contents
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Safety Information ............................................................................................................................ 2
Electrostatic Discharge Sensitive (ESDS) Device Handling ........................................................ 3
Specifications ................................................................................................................................ 3-4
Disassembly/Assembly Procedures ........................................................................................... 5-6
Figure 1. Bottom Panel .................................................................................................................... 6
Figure 2. Side View of Chassis ........................................................................................................ 6
Figure 3. Amplifier Chassis Cover .................................................................................................... 6
General Test Setup ........................................................................................................................... 7
Test Procedures ............................................................................................................................ 7-8
Part List Notes .................................................................................................................................. 9
Main Assembly Part List ................................................................................................................ 10
Figure 4. Exploded View ................................................................................................................ 10
Electrical Part List ..................................................................................................................... 11-16
Packaging ....................................................................................................................................... 17
Figure 6. Packaging View .............................................................................................................. 17
Figure 7. Wiring Schematic ............................................................................................................ 17
Figure 8. Driver Location ................................................................................................................ 17
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF
®
BOSE
CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE
BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED
FOR ANY OTHER PURPOSE.
Contents
PROPRIETARY INFORMATION
1
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Summary of Contents for Bose ACOUSTIMASS PRO
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Page 1: Table Of Contents
® BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. -
Page 2: Safety Information
® ® CAUTION: THE BOSE ACOUSTIMASS PROFESSIONAL POWERED SPEAKER SYS- TEM CONTAINS NO USER SERVICEABLE PARTS. TO PREVENT WARRANTY INFRAC- TIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SER- VICE. -
Page 3: Electrostatic Discharge Sensitive (Esds) Device Handling
Electrostatic Discharge Sensitive (ESDS) Device Handling This unit contains ESDS devices. We recommend the following precautions when repairing, replacing or transporting ESDS devices: • Perform work at an electrically grounded work station. • Wear wrist straps that connect to the station or heel straps that connect to conductive floor mats. -
Page 4: Specifications
SPECIFICATIONS Acoustics 50-18k ± 3dB Frequency Response: Maximum Output (free field) Speech Only: 122 dB SPL, 1m Music: 120 dB SPL, 1m Crossover Frequency: 200Hz Dispersion Angles (-6 dB down points) Horizontal: 100˚ at -6 dB averaged by octave, 1kHz-8kHz Vertical: 60˚... -
Page 5: Disassembly/Assembly Procedures
6. Grille Replacement Note: Numbers in parentheses correspond to the item call outs in Figure 1, 2, 3, 4. 6.1 Align the grille (4) with the cabinet so that the Bose ® logo is in the same direction 1. Amplifier Removal as the label on the amplifier. - Page 6 DISASSEMBLY/ASSEMBLY PROCEDURES (Figures 1, 2, 3, 4) 11.3 Lift the chassis cover up and remove four nuts (C) that secure the bottom cover the connector from the PCB. to the chassis. 12. Amplifier Chassis Cover Replacement 13.3 Using a strain relief tool, remove the two strain reliefs (D) that secure the two 12.1 Align the chassis cover to the chassis output wires.
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Page 7: General Test Setup
TEST PROCEDURES General Test Setup 3. Voltage Limiting 3.1 Apply a 1.0Vrms, 100Hz signal to the Caution! There is no mains isolation amplifier's input. Measure the output transformer in this amplifier! This amplifier according to the following table. must be isolated from the AC line by a 1.0 kVa or larger isolation transformer during all Variation Output Voltage... -
Page 8: Test Procedures
TEST PROCEDURES Use for serial numbers 050121 and above 8. Hum (later EQ) 8.1 Short all inputs to input ground. The hum measured at the output should be less Frequency Output Tolerence than 4mVrms, "C" weighted. ± 30Hz 0.2dB 2.5dB ±... -
Page 9: Part List Notes
PART LIST NOTES 1. This part is not normally available from customer service. Approval from the Field Service Manager is required before ordering. 2. The individual parts located on the PCB are listed in the part list. This part is critical for safety purposes. Failure to use a substitute replacement with the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. -
Page 10: Main Assembly Part List
MAIN ASSEMBLY PART LIST Iten Part Description Notes Number Number 131306 WOOFER ASSY, 12" 131321-5 DRIVER ASSY, 4.5" 129028-1 AMP ASSY, PROTON, 120V 1, 2 142941-AA GRILLE ASSY, PROTON, BLACK 131075-B1 GASKET, LRG, W/ADH 135983-08 SCREW, MACH, 8-32x.5, CAP, SOCK 135984-06 SCREW, MACH, 10-32x.375, BTN, SOC 135152-16... -
Page 11: Electrical Part List
ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator R701, 702, 777, 1.0 k, 5%, 1/6 W 139168 790, 711, 712, 714, 722, 729, 734, 773, 774, 775, 776, 789, 808, 812 270 Ω, 5%, 1/6 W R703 139389 56 Ω, 5%, 1/6 W R704, 733, E35, 139342... - Page 12 ELECTRICAL PART LIST Resistors Reference Description Part Number Note Designator 2.7 Ω, 5%, 1/2W R815 139344 RE01, E02 1.0 M, 1 %, 1/6W 139345 RE03, E04 9.09 k, 1%, 1/6W 139346 RE05, E06 1.0 k, 1 %, 1/6W 139347 RE08 10.0 k, 1 %, 1/6W 139176 RE13...
- Page 13 ELECTRICAL PART LIST Capacitor Reference Description Part Number Note Designator C770†, 771†, 781‡ 1000 pF, Ceram, 139156 782‡, 784, W51¥, 10%, 250 V ¥230V W52¥, W53¥, ‡100V/120V W54¥, W55¥ †Used in earlier EQ C701, 754, 755, F 1500 pF, Film, 5% 139395 £Used in later EQ E11£...
- Page 14 ELECTRICAL PART LIST Capacitor Reference Description Part Number Note Designator CE03, E04 1000 pF, Ceram, 139421 CE05, E06 470 pF, Film, 5% 139423 CE09£, E17£ 5600 pF, Film, 5% 141446 £Used in later EQ CE09†, E17† 4700 pF, 5% 141445 †Used in earlier EQ CE10£, E16†, E22 47 pF, Ceram, 5%...
- Page 15 ELECTRICAL PART LIST Diodes Reference Description Part Number Note Designator DE10 L.E.D. Red 136330 100V/120V Transistor Reference Description Part Number Note Designator Q701, E02 IC, IR91308 136312 Q702, 705, 713, Transistor, NPN, 136313 N03, N04 2SC536SP (F,G) Q703, 704 Transistor, PNP, 136314 2SA608SP (F,G) Q709...
- Page 16 ELECTRICAL PART LIST Inductors Reference Description Part Number Note Designator L709 Transformer, Power, 136345 100V 100V LE01 Transformer, Input 136340 LE02 Transformer, Power, 136346 110V 120V LE02 Transformer, Power, 136347 230V 230V LE02 Transformer, Power, 136348 230V 100V Miscellaneous Reference Description Part Number Note...
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Page 17: Packaging
PACKAGING Item Descrition Part Number Q t y Number Carton 140022 Front and Rear 140024 Creased Sheet 140025 Polybag 133174 Top and Bottom 140026 Sides 140023 Figure 6. Packaging View 25uF Orange From Amplifier Black Yellow Black BLK/ORG Baffle To Amplifier Chassis Green Figure 7. - Page 18 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE ® ® Bose Corporation The Mountain Framingham Massachusetts USA 01701 P/N 141566 REV. 01 04/97 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008...
- Page 19 ® ® ® Acoustimass Professional Powered Speaker System Service Manual © 1997 Bose Corporation Part Number 141566 REV 01...
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