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Contents
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

PROPRIETARY INFORMATION 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.

1

SAFETY INFORMATION
1. Parts that have special safety characteristics are identified by the symbol on schematics or by special notes in the part lists. Use only replacement parts that have critical characteristics recommended by the manufacturer. 2. Make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the unit to the customer. Use the following checks to perform these measurements: A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL) 1492 (71). With the unit AC switch first in the ON position and then in OFF position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screw-heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the unit's power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER. B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the unit. When the exposed metallic part has a return path to the chassis, the reading should be between 1 and 5.2 Meg ohms. When there is no return path to the chassis, the reading must be "infinite". If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer.

CAUTION: THE BOSE® ACOUSTIMASS® PROFESSIONAL POWERED SPEAKER SYSTEM CONTAINS NO USER SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SERVICE.

2

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. · Avoid touching the leads or contacts of ESDS devices or PC boards even if properly grounded. Handle boards by the edges only. · Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap or plastic trays.

SPECIFICATIONS
General
Weight: Dimensions: Driver Complement: 75 lb. (34 kg) 16"H x 22 1/4" W x 23 1/4" D (40.6 x 56.5 x 59.1 cm) Six 4 1/2" helical voice coil drivers, One 12" magnetically braked woofer

Electrical
Inputs: Input Impedance: Pin Assignment: Maximum Amperage: Power Input Requirements: Line-level balanced XLR and unbalanced 1/4" phono 10k unbalanced, 2.4k balanced See schematic 6.5 amps 120V, North America 230V, Europe and Australia 100V, Japan 100VAC line input: 350W 115VAC line input: 450W 230VAC line input: 450W 40 dB

Power Output:

Common Mode Rejection Ratio:

3

SPECIFICATIONS
Acoustics
Frequency Response: Maximum Output (free field) Speech Only: Music: Crossover Frequency: 50-18k ± 3dB 122 dB SPL, 1m 120 dB SPL, 1m 200Hz

Dispersion Angles (-6 dB down points) Horizontal: 100° at -6 dB averaged by octave, 1kHz-8kHz Vertical: 60° at -6 dB averaged by octave, 1kHz-8kHz Horizontal, Stacked Pair: 100° at -6 dB averaged by octave, 1kHz-8kHz Vertical, Stacked Pair: 30° at -6 dB averaged by octave, 1kHz-8kHz

Environmental
Temperature Operating Range: Storage Range: Humidity: -20°F to 122°F (-29°C to 50°C) -40°F to 180°F (-40°C to 82°C) 20-95% relative humidity (Note: Do not operate this speaker system in the rain or when wet.)

Mechanical Structure
Cabinet Material: Tie Rods (4): Baffle Material: Grille Material: Threaded inserts: T-Nuts: Structural polyurethane foam 1/4" -20 UNC Die-cast aluminum Stainless steel 8 mm - 18 UNC 1/4" -20 UNC

4

DISASSEMBLY/ASSEMBLY PROCEDURES
(Figures 1, 2, 3, 4)
Note: Numbers in parentheses correspond to the item call outs in Figure 1, 2, 3, 4. 1. Amplifier Removal 1.1 Remove the sixteen screws (8) that secure the amplifier (3) to the cabinet. 1.2 Lift the amplifier out of the enclosure. Disconnect the ground lug from the amplifier chassis and the two output wires from the capacitor (14) and inductor (13). 2. Amplifier Replacement 2.1 Connect the ground wire (green) to the amplifier (3) chassis. Connect the red wire to the capacitor (14) and the black wire to the inductor (13). 2.2 Replace the sixteen screws (8) that secure the amplifier to the cabinet. 3. Woofer Removal 3.1 Perform procedure 1 first. 3.2 Remove the eight screws (8) that secure the woofer (1) to the cabinet. 3.3 Lift the woofer out and remove the two wires connected to it. 4. Woofer Replacement 4.1 Connect the red wire to the positive and the black wire to the negative terminal of the woofer (1). 4.2 Replace the eight screws (8) that secure the woofer to the cabinet. 5. Grille Removal 5.1 Remove the eight screws (7) that secure the grille (4) to the cabinet. 5.2 Pull the grille off. Note: On some units the screws are secured with loctite. Use MEK solvent to remove the screws. 9.2 Remove the six screws (A) that secure the top cover to the chassis and lift the top cover off. 10. Amplifier Cover Replacement 10.1 Align the top cover to the chassis and replace the six screws (A) that secure the top cover to the chassis. 11. Amplifier Chassis Cover Removal 11.1 Perform procedure 1 and 9 first. 11.2 Remove the ten screws (E) that are located on each side of the chassis and the ten screws (F) that are located on the top of the chassis. 8.1 Connect the two wires to the driver (2). Refer to the wiring diagram on page 18. 8.2 Replace the three screws (6) that secure the driver to the cabinet. 9. Amplifier Cover Removal 9.1 Perform procedure 1 first. 6. Grille Replacement 6.1 Align the grille (4) with the cabinet so that the Bose® logo is in the same direction as the label on the amplifier. 6.2 Replace the eight screws (7) that secure the grille to the cabinet. 7. Driver Removal 7.1 Perform procedure 5 first. 7.2 Remove the three screws (6) that secure the driver (2) to the cabinet. 7.3 Lift the driver out from the cabinet and remove the two wires attached to it. Note: On some units the screws are secured with loctite. Use MEK solvent to remove the screws. 8. Driver Replacement

5

DISASSEMBLY/ASSEMBLY PROCEDURES
(Figures 1, 2, 3, 4)
11.3 Lift the chassis cover up and remove the connector from the PCB. 12. Amplifier Chassis Cover Replacement 12.1 Align the chassis cover to the chassis and replace the ten screws (E) that are located on each side of the chassis and the ten screws (F) that are located on the top of the chassis. 13. Bottom Panel Removal 13.1 Perform procedure 1 and 9 first. 13.2 Remove the eight screws (B) and the 14.2 Using a strain relief tool, replace the two strain reliefs (D) that secure the two output wires.
A B A B C B A B A B D B A

four nuts (C) that secure the bottom cover to the chassis. 13.3 Using a strain relief tool, remove the two strain reliefs (D) that secure the two output wires. Lift the bottom cover off. 14. Bottom Panel Replacement 14.1 Feed the wires through the holes in the bottom panel. Replace the eight screws (B) and the four nuts (C) that secure the bottom cover to the chassis.

A B

B

Figure 1. Bottom Panel
E E E

Figure 2. Side View of Chassis
F F F F F F F F F

Figure 3. Amplifier Chassis Cover

6

TEST PROCEDURES
General Test Setup Caution!
There is no mains isolation transformer in this amplifier! This amplifier must be isolated from the AC line by a 1.0 kVa or larger isolation transformer during all testing! A stancore GIS-1000 or equivalent isolation transformer should be used for 100VAC and 120VAC units. A Siemens 4AX24-16-2BK or equivalent isolation transformer should be used for 230VAC units. A variac rated 1.0kVA or larger should be used to vary the line voltage. Output Loading: Unless otherwise specified, perform all tests with a series connected 16, 1%, 500 watt resistor and a 1.0mH, 10%, 5 amp rated inductor as the load. Input: Unless otherwise specified, apply a 1kHz, 1.0Vrms signal to the amplifiers unbalanced input. All output measurements should be made with a 30kHz, 4 pole low pass filter in series with the input of the measurement equipment to reject the switching ripple. 1. Switching Frequency 1.1 With out an applied signal, measure the switching frequency at the amplifier's output. It should be 110kHz to 130kHz. Do not use the 30kHz low pass filter when performing this test. 2. Output Ripple 2.1 The level of the switching frequency should be less than 20Vpp. Do not use the 30kHz low pass filter when performing this test. 3. Voltage Limiting 3.1 Apply a 1.0Vrms, 100Hz signal to the amplifier's input. Measure the output according to the following table. Variation 100V 120V 240V 4. Current Limiting 4.1 Apply a 1.0Vrms, 100Hz signal to the amplifier's input and connect an 8 resistive load to the output. 4.2 The output voltage should be 80.0Vp ± 8.0Vp (corresponding to 10A ± 1A). 5. Reference Gain 5.1 Apply a 50mV, 1kHz signal to the amplifier's input. Reference a dB meter to the applied signal. 5.2 Measure the output of the amplifier. It should be 32.0dB ±1.5dB. 6. Frequency Response 6.1 Apply a 50mV, 1kHz signal to the amplifier's input. Reference a dB meter to the amplifiers output. Measure the output according to the following table. Note: Use the last six digits of the serial number to determine which table to use. The serial number is located on the side of the amplifier as MK01xxx______ or MZ01xxx______. Output Voltage Limit 104.5Vp to 115.5Vp 125.4Vp to 138.6Vp 125.4Vp to 138.6Vp

7

TEST PROCEDURES
Use for serial numbers 050121 and above (later EQ)
Frequency 30Hz 50Hz 90Hz 150Hz 350Hz 1kHz 4kHz 7kHz 13kHz 20kHz Output 0.2dB 17.1dB 12.6dB 11.2dB 4.9dB Reference 14.7dB 13.0dB 22.0dB 14.8dB Tolerence ±2.5dB ±1.5dB ±1.5dB ±1.5dB ±1.5dB ±2.7dB ±2.7dB ±5.0dB ±3.0dB

8. Hum 8.1 Short all inputs to input ground. The hum measured at the output should be less than 4mVrms, "C" weighted. 9. Noise 9.1 Short all inputs to input ground. The noise measured at the output should be less than 3mVrms, "A" weighted. 10. Common Mode Rejection Ratio (CMRR) 10.1 Connect the positive side of a signal generator to the positive and negative side of the XLR amplifier input. Apply a 3.0Vrms 60Hz and then a 1kHz signal. Reference a dB meter to the applied signal. 10.2 The output should be less than -40dB.

Use for serial numbers 050120 below (earlier EQ)
Frequency 30Hz 50Hz 90Hz 150Hz 350Hz 1kHz 4kHz 7kHz 13kHz 20kHz Output -4.6dB 13.5dB 10.0dB 11.2dB 4.7dB Reference 14.8db 14.7dB 25.4dB 16.5dB Tolerence ±4.0dB ±1.8dB ±1.8dB ±1.8dB ±2.0dB ±3.0dB ±3.0dB ±5.5dB ±4.0dB

7. Amplifier Distortion 7.1 Apply a 50Hz, 1kHz and 10kHz signal to the input of the amplifier at a level to obtain an output according to the following table. The distortion measured at the output should be less than 0.4% at 50Hz and 1kHz and less than 1.0% at 10kHz. Variation 100V 120V 240V Output Power 300W 450W 450W Reference Voltage 70Vrms 85Vrms 85Vrms Load 16 16 16

8

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. 3. 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.

9

MAIN ASSEMBLY PART LIST
Iten Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Part Number 131306 131321-5 129028-1 142941-AA 131075-B1 135983-08 135984-06 135152-16 137923-10 131380-B 172672-12 133504-10 131779 131948 135339-10 121112 111620 137050 134907 134908 Description WOOFER ASSY, 12" DRIVER ASSY, 4.5" AMP ASSY, PROTON, 120V GRILLE ASSY, PROTON, BLACK GASKET, LRG, W/ADH SCREW, MACH, 8-32x.5, CAP, SOCK SCREW, MACH, 10-32x.375, BTN, SOC SCREW, TAPP, 10-10xl, FILL, XRC/SQ WASHER, FLAT, .219", #10 GASKET, PROTON SCREW, TAPP, 8-llx.75, PAN, XRC/SQ SCREW, MACH, .25-20x.625, CAP, HEX INDUCTOR, 14mH CAP, DUAL LUG, 240VAC, 10%, 25uF SCREW, MACH, 6-32x.625, PAN, XREC CONN, FUSE CLIP, l POS, FEM CLIP, CORD, ADH BACKED SCREW, THUMB, M8 x l.25x25mm WASHER, BEVELED, .255" WASHER, FLAT, .260" QTY 1 6 1 1 1 18 8 24 16 1 2 1 1 1 1 2 1 2 1 2 Notes

1, 2

3 3

13

12 SIDE VIEW OF CROSSOVER

20 20 15 19

1611

BLACK BLACK/ORANGE 13

14

THUMB SCREW MOUNT

WIRE HARNESS

RED GREEN 15 TO AMP GROUND 14

ORANGE

Figure 4. Exploded View 10

ELECTRICAL PART LIST
Resistors
Reference Designator R701, 702, 777, 790, 711, 712, 714, 722, 729, 734, 773, 774, 775, 776, 789, 808, 812 R703 R704, 733, E35, N11, N12, 715, 806, E20 R705, 737, 738, 813, E33 R706 R707 R708, E36, N01, N02 R709, 710 R713, 788, 814 R716, 780 R717, 830, E32, E34, N09, N10 R718 R719, 720 R721, 778, 791 R723 R724 R725, 726, 796 R727, 728, 807, E07 R730 R731, E12 R732 R735, 736, 743, 799 R739, 740, 741, 742 R765, 766 Description 1.0 k, 5%, 1/6 W Part Number 139168 Note

270 , 5%, 1/6 W 56 , 5%, 1/6 W 2.2 k, 5%, 1/6 W 2.2 k, 5%, 1/6 W 330 k, 5%, 1/6 W 10 , 5%, 1/6 W 348 k, 2%, 1/4 W 10.0 k, 5%, 1/6 W 22.0 k, 5%, 1/6 W 220 , 5%, 1/6W

139389 139342 139178 139178 139390 139374 139391 139169 139185 139163 139393 139394 139168 139170 138998 139172 139176 139173 139174 139175 139177 139179 136357 139181 139160 136359 139183 139184 139186 139187 139188 141451 139189 139190 139191 139172 139192 139161 139162 3

15.0 k, 5%,1/6 W 470 k, 5%, 1/6 W 1.0 k, 5%, 1/6 W 332 k, 1%, 1/6W Varistor 4.99 k, 1%, 1/6W 10.0 k, 1%, 1/6W 21.0 k, 1%, 1/6W 200 k, 1%, 1/6W 6.65 k, 1%, 1/6W 4.7 k, 5%, 1/6W 680 , 5%, 1/4W 22 , 5%, 3W, Power R765, 766 15 , 5%, 5W, Power R767 0.1 , 5%, 5W, Power R768 27.0 k, 5%, 2W, Power R771, 772 10 , 5%, 1/4W R779 61.9 k, 1%, 1/6W R781, 782 390 , 5%, 1/4W R783, 784, 820 100 , 5%, 1/6W R785, E37 100 k, 5%, 1/6W R786 3.3 k, 5%, 1/6W R787 43.2 k, 1%, 1/6W R792, 811 47.0 k, 5%, 1/6 W R793, 794, E29 20.0 k, 1%, 1/6 W R795 4.99 k, 1 %, 1/6 W R797, 798 18.2k, 1 %, 1/6 W R801, 802, E40, E41 237 , 1%, 1/6W R803, 804, E38, E39 1.21 k, 1%, 1/6W

3 3

3 100V/120V 3 230V 3

11

ELECTRICAL PART LIST
Resistors
Reference Designator R815 RE01, E02 RE03, E04 RE05, E06 RE08 RE13 RE14£, E19 RE14 RE15 RE16 RE17 RE18£, E24 RE18 RE20 RE20£ RE21 RE22 RE22£ RE23£ RE23 RE25£ RE25 RE26 RE27 RE28 RE30£ RE30 RE31£ RE31 RE42 RE43 RE43 RE51 RN03, N04, N05, N06 RN07, N08 RN13, N14 RW51 Description 2.7 , 5%, 1/2W 1.0 M, 1 %, 1/6W 9.09 k, 1%, 1/6W 1.0 k, 1 %, 1/6W 10.0 k, 1 %, 1/6W 23.2 k, 1%, 1/6W 7.5 k, 1%, 1/6W 475 , 1%, 1/6W 165 k, 1%, 1/6W 24.3 k, 1%, 1/6W 2.67 k, 1%, 1/6W 59.0 k, 1%, 1/6W 56.2 k, 1%, 1/6W 12.1 k, 1 %, 1/6W 11.0k, 1%, 1/6W 100 k, 1%, 1/6W 52.3 k, 1%, 1/6W 64.9 k, 1%, 1/6W 4.75 k, 1%, 1/6W 4.42 k, 1%, 1/6W 6.65 k, 1%, 1/6W 13.3 k, 1%, 1/6W 1.74 k, 1%, 1/6W 3.09 k, 1%, 1/6W 60.4 k, 1%, 1/6W 1.33 k, 1%, 1/6W 2.0 k, 5%, 1/6W 681 , 1%, 1/6W 665 , 1%, 1/6W 100 , 5%, 2W 470 , 5%, 1/2W 1.0 k, 5%, 1/2W 2.7 k, 5%, 1/2W 470 , 5%, 1/6W 2.7 k, 5%, 1/6W 39.0 k, Rotor, 5%, 3W 220 k, Hi-Volt, 10%, 1/4W Part Number 139344 139345 139346 139347 139176 141458 141469 141462 139351 139352 141459 139365 141465 141453 139343 141452 141464 141466 141463 141461 139175 141455 141456 141460 139369 141454 141457 141468 141467 139361 141439 139164 136356 139376 139377 136362 141450 3 Note

£Used in later EQ Used in earlier EQ

£Used in later EQ Used in earlier EQ Used in earlier EQ £Used in later EQ Used in earlier EQ £Used in later EQ £Used in later EQ Used in earlier EQ £Used in later EQ Used in earlier EQ

£Used in later EQ Used in earlier EQ £Used in later EQ Used in earlier EQ 230V 100V/120V

Capacitors
Reference Designator C001, 002 C010, 011 Description Part Number Note 3 100V/120V 3 100V/120V

0.22 uF, Film, 400 V 139381 2200 pF, Ceram, 125V/250V 139382

12

ELECTRICAL PART LIST
Capacitor
Reference Designator C770, 771, 781 782, 784, W51¥, W52¥, W53¥, W54¥, W55¥ C701, 754, 755, E11£ C702 C703, 704, 766, E98, E99 C705, E07, E08, E25 C706 C707, 713, E10£, 708 C709, E24 Description 1000 pF, Ceram, 10%, 250 V F 1500 pF, Film, 5% 100 uF, Elect, 10V 100 pF, Ceram, 10% 0.47 uF, Film, 5% 47 uF, Elect, 25 V 1000 pF, Film, 5% Part Number 139156 Note 3 ¥230V 100V/120V Used in earlier EQ £Used in later EQ

139395 136350 139397 139398 136351 139400 139402 139403 139404 139405 139406 139407 139408 139409 136352 139411 139413 139412 139417 136355 136353 136354 139419 139420 139157 139158 141448 139422

£Used in later EQ

270 pF, Ceram, 10% C710 820 pF, Film, 5% C712, 714 22 pF, Ceram, 5% C715, 716 330 pF, Ceram, 10% C717, 718, 753 680 pF, Ceram, 10% C719, 720, 721, 722 2200 pF, Ceram, 10% C731, 732 390 pF, Ceram, 10% C731, 732 1000pF, Ceram, 10% C733, 734, 735, 736 1000uF, Elect, 200V C739, 740 0.1uF, Film, 10%, 400V C741, 742 470 pF, Ceram, 10% C743, N01, N02, 0.1 uF, Film, 5% N07, N08 C744, 752, E23 220 pF, Ceram, 10% C746, 747, E27, 1000 uF, Elect, 25V E28 C748, 749, 760, 220 uF, Elect, 25V E29, E30 C750, 762, 763, 22uF, Elect, 25V 764, 767, 768, E41 C751 2200 pF, Ceram, 10% C756 0.68 uF, Film, 20%, 250V C781, 782 470 pF, Ceram, 10%, 250V C783 0.01 uF, Ceram, 80%, 20% CE01, E02 4.7uF, Elect, 5%, 100V CE01£, E02 0.27uF, 5%

3 100V/120V 3 230V

3 230V Used in earlier EQ £Used in later EQ

13

ELECTRICAL PART LIST
Capacitor
Reference Designator CE03, E04 CE05, E06 CE09£, E17£ CE09, E17 CE10£, E16, E22 CE11 CE12£ CE12 CE13£, E15, E18 CE13, E18£ CE14£, E19, E26 CE14, E19£ CE16£ CE20 CE21 CN03, N04 CN05, N06 Description 1000 pF, Ceram, 10% 470 pF, Film, 5% 5600 pF, Film, 5% 4700 pF, 5% 47 pF, Ceram, 5% 2200 pF, Film, 5% 0.039 uF, Film, 5% 0.033 uF, Film, 5% 0.022 uF, Film, 5% 0.027 uF, Film, 5% 0.01 uF, Film, 5% 8200 pF, Film, 5% 82 pF, Ceram, 5% 0.015 uF, Film, 5% 0.012 uF, Film, 5% 100 pF, Ceram, 10%, 500V 4700 pF, Ceram, 10% Part Number 139421 139423 141446 141445 139428 141441 141444 139429 141442 141443 139427 141447 141440 139430 139431 139432 139433 £Used in later EQ Used in earlier EQ £Used in later EQ Used in earlier EQ Used in earlier EQ £Used in later EQ Used in earlier EQ £Used in later EQ Used in earlier EQ Used in earlier EQ £Used in later EQ £Used in later EQ Used in earlier EQ Used in earlier EQ £Used in later EQ £Used in later EQ Note

Diodes
Reference Designator D010 D702, 703, 704, 705, 706, 707, 727, 728, 729, 730, 731, 732, 733, 744, E01, E02, E03, E04, N01, N02, N03, N04, N05, N06, N07, N08, N09, N10, N11, N12, N13, N14, N15, N16, N17, N18 D720, 721, 722, 723 D724, 725 D724, 725 D735 D736, 737, 738, 739, E05, E06, E07, E08, E09 DE10 Description S10V860 1SS136 Part Number 136332 136310 Note 3

BYV29-400 M.O.V., 150V, V150LA20A M.O.V., 130V, V130LA20A Zener Diode, 7.5V DSF10C L.E. D. Green

136311 138055 138054 136308 132660 136330

3 120V/230V 3 100V

3 230V

14

ELECTRICAL PART LIST
Diodes
Reference Designator DE10 Description L.E.D. Red Part Number 136330 Note 3 100V/120V

Transistor
Reference Designator Q701, E02 Q702, 705, 713, N03, N04 Q703, 704 Q709 Q710 Q711 Q712 Q714 Q715, 716 Q717 Q718 Q719, 720, 721 Q732, 733 Q734, E05 Q735, E06 QE01 QN01, 02 QN05, 06 QN07, 08 Description IC, IR91308 Transistor, NPN, 2SC536SP (F,G) Transistor, PNP, 2SA608SP (F,G) IC, CA3280E Transistor, PNP, 2SA1246 (S,T,U) Transistor, NPN, 2SC3114 (S,T,U) IC, IR9319 IC, 4041 IC, 4066 IC, uPC4074 IC, 4093 Transistor, NPN, 2SC3328 (O,Y) F. E.T., 2SK694 IC, +Regulator, uPC317H IC, -Regulator, IlPC337H IC, uPC4574C Transistor, PNP, 2SA1315 (O,Y) F.E.T., 2SK246 (GR) Transistor, NPN, 2SC2236 (O,Y) Part Number 136312 136313 136314 136315 136316 136317 136318 136319 136320 136321 136322 136323 136324 136331 138231 136325 136328 136327 136329 3 Note

Inductors
Reference Description Designator L701, 702, 703, 704, Transformer, Pulse 705 L706, 708 Transformer (Coil) L708, W51 L709 L709 Part Number 136339 136341 Note 3 3 100V/120V 3 230V 3 120V 3 230V

Transformer (Coil) 136342 SC-4-200JV Transformer, Power, 136343 110V Transformer, Power, 136344 230V

15

ELECTRICAL PART LIST
Inductors
Reference Designator L709 LE01 LE02 LE02 LE02 Description Transformer, Power, 100V Transformer, Input Transformer, Power, 110V Transformer, Power, 230V Transformer, Power, 230V Part Number 136345 136340 136346 136347 136348 Note 3 100V 3 3 120V 3 230V 3 100V

Miscellaneous
Reference Designator F781, E01, E02 F701, 702 F701, 702 F701, 702 S001 W001 W001 W001 JE52 JO41 JO42 JO92 _ _ _ Description Ferrite Core Fuse, 10A, 250V, 0.25" x 1.25" Fuse, 5A, 250V, 5mm x 20 mm Fuse 10A Push Switch, Power A.C. Power Cord, 120VAC Version A.C. Power Cord, 230VAC Version A.C. Power Cord, 100VAC Version Jack, Output, 1/4" Jack, Input, XLR Jack, Output, XLR Plug, AC Inlet Button, Power Switch Lens, Power Led Strain Relief Part Number 139146 138992 138991 141449 136338 138993 138994 138995 135336 136333 136334 136337 139436 139438 139440 Note 3 120V 3 230V 3 100V 3 3 120V 3 230V 3 100V

3

16

PACKAGING
Item Number 1 2 3 4 5 6 Descrition Carton Front and Rear Creased Sheet Polybag Top and Bottom Sides
5 2 3

Part Number 140022 140024 140025 133174 140026 140023
4

Qty 1 2 2 1 2 2

6

1

Figure 6. Packaging View
Red + + From Amplifier 1mH 3 25uF Orange

-

Black

+
2

Red + Yellow x5

+
1

+
6

-

Black

+
5

+
4 BLK/ORG To Amplifier Chassis Green

-

Baffle

Figure 7. Wiring Schematic

Figure 8. Driver Location

17

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

® ®

Acoustimass® Professional Powered Speaker System

©

1997 Bose Corporation

Service Manual
Part Number 141566 REV 01