Bose-Acoustimass-10-Service-Manual 电路图 维修手册.pdf

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1、1 Contents Specifications. 2 Acoustimass 10 Bass Module Description . 3 Figure 1. AM-10 Bass Module. 4 Disassembly/Assembly Procedures . 5-6 Figure 2. Bass Module Exploded View . 7 Figure 3. Cube Array Exploded View . 7 Test Procedures . 8-9 Part List Notes. 10 AM-10 Bass Module Part List. 11 Figure

2、 4. Bass Module Exploded View . 11 Crossover Part List . 12 Figure 5. Schematic Diagram REV 01 . 12 Crossover Mechanical Part List. 13 Figure 6. Crossover PCB Mechanical Layout . 13 Figure 7. Crossover PCB Etch Layout REV 01. 13 Cube Array Part List. 14 Figure 8. Cube Array Exploded View . 14 AM-10

3、Packaging Part List . 15 Figure 9. Packaging Exploded View . 15 2 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 BOS

4、E PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. SPECIFICATIONS Dimensions Cube Arrays: 6.3 x 3.0 x 4.8 (16 x 7.62 x 12.2 cm) Bass Module: 13 x 7.5 x 20.5 (33 x 19 x 52.1 cm) Weight Single Cube: 2.1 lbs (0.91 kg) Bass Module: 23 lbs (10.5 kg) Packed System:40 lbs (18.2 kg) Cross

5、over Frequencies Cubes:(L& R) 300Hz at 6 dB/Oct (CTR, SURR) 200Hz at 6 dB/Oct System Protection Left, Right, Center and Surround:PTC and Lamps Cube Protection Left and Right:Lamps Center and Surround:None Impedance6 nominal, 4.8 minimum from 20Hz to 20kHz Power Handling Left, Center, and Right Chann

6、els:100W continuous per IEC-268-5, Recommended amp/receiver power 10-200 watts/channel Left and Right Surround Channels:50W continuous per IEC-268-5, Recommended amp/receiver power 10-100 watts/channel Flux Leakage (Cubes):2.0 Gauss max. at 30 mm from any surface of the cube 3 Acoustimass 10 Bass Mo

7、dule Description (Refer to Figure 1) Left woofer Reproduces all left channel low frequency information. This woofer is loaded by the Acoustimass 10 enclosure in such a way as to produce deep bass energy. Right woofer Reproduces all right channel low frequency information. This woofer is loaded by th

8、e Acoustimass 10 enclosure in such a way as to produce deep bass energy. Surround woofer Reproduces all left and right surround channel low frequency information. This woofer uses a dual voice coil that electromagnetically sums the left and right surround channel bass energy. The woofer cone then re

9、produces the summed left and right surround channel and sends it into the energy summing chamber (acoustic spring C). Acoustic Spring A This is the volume of air in the rear chamber (in front of the left and right channel woofers). This volume of air acts like a spring and acoustically couples the f

10、ronts of the left and right woofers to acoustic mass A. Acoustic Mass A This is the longer of the two internal ports and, together with Acoustic spring A, serves to reproduce the lower frequencies of the bass module, while reducing the cone excursion of the left and right woofers over this lower fre

11、quency range (35Hz to 60Hz). Acoustic Spring B This is the volume of air in the middle chamber (behind the left and right channel woofers). This volume of air acts like a spring and acoustically couples the rear of the left and right woofers to acoustic mass B. Acoustic Mass B This is the shorter of

12、 the two internal ports and, together with Acoustic spring B, serves to reproduce the upper frequencies of the bass module, while reducing the cone excursion of the left and right woofers over this upper frequency range (120Hz to 200Hz). Acoustic Spring C (The Energy Summing Chamber) This is the fro

13、nt most volume of air inside the AM-10 bass module. This is where the bass is summed. Within this chamber, the front channel bass energy is received via acoustic mass A and B, the surround channel bass energy is received directly from the surround woofer. 4 All front and surround channel bass energy

14、 is summed within this chamber in much the same way as a room would sum the bass energy from two separate bass modules. The key difference with internal bass summing is the results of summation are much better controlled because the summation conditions are already known (in a room with two bass sou

15、rces, their distance from each other and their location within the room heavily influence bass summation and the loudspeaker designer cannot predict that ahead of time). Another important purpose of this chamber is it interacts with Acoustic Mass C to provide an extra stage of low pass filtering to

16、create a steeper high frequency roll off slope for the bass module, which serves to reduce localization. Acoustic Mass C This is the exit port of the bass module and serves to launch the bass energy into the room on a column of air (purifying, of course). This port also interacts with Acoustic Sprin

17、g C to reproduce the middle range of frequencies of the bass module, while reducing the cone excursion of all the woofers over this middle range (60Hz to 120Hz). This port is flared to eliminate any internal air turbulence, which significantly improves the efficiency of the entire bass module at hig

18、h listening levels. Acoustic Spring D This is the volume of air enclosing the rear portion of the surround channel woofer. Its main purpose is to load the surround woofer and to help reduce cone excursion. Acoustic Mass A Acoustic Mass B Acoustic Mass C Acoustic Spring A (Rear chamber) Acoustic Spri

19、ng B (Middle chamber) Acoustic Spring C (summing chamber) Acoustic Spring D Surround Channel Woofer Left Channel Woofer Right Channel Woofer Figure 1. AM-10 Bass Module 5 DISASSEMBLY/ASSEMBLY PROCEDURES BASS MODULE Note: Numbers in parentheses correspond to the item call outs in Figure 2. 1. Termina

20、l Cup Removal 1.1 Remove the eight screws (6) that secure the terminal cup (5) to the bass module. 1.2 Lift up on the terminal cup at the end where the input connections are located. Disconnect the two cables from the PCB (2). 1.3 Lift the terminal cup out of the bass box in the direction of the inp

21、ut connectors. 2. Terminal Cup Replacement 2.1 Lower the terminal cup (5) into the bass box so that the PCB (2) enters first. 2.2 Replace the two connectors that attach to the PCB (2). The wire color sequence label next to the connector should match the wires on the cable. 2.3 Replace the eight scre

22、ws (6) that secure the terminal cup to the bass mod- ule. 3. Crossover PCB Removal 3.1 Perform procedure 1 first. 3.2 Remove the three screws (1) that secure the PCB (2) to the terminal cup (5). 3.3 Lift the PCB straight up. It might be necessary to slightly wiggle the PCB back and forth. 4. Crossov

23、er PCB Replacement 4.1 Place the PCB (2) onto the terminal cup (5) so that the lamps overhang the output terminal end. Make certain that the 20 pins on the terminal cup line up with the PCB. Press the PCB and the terminal cup together. 4.2 To prevent buzzes, make certain that the lamps are not touch

24、ing one another. 4.3 Replace the three screws (1) that secure the PCB to the terminal cup. 5. Woofer Removal 5.1 Perform procedure 1 first. 5.2 Remove the four screws (6) that secure the woofer (3) to the baffle. 5.3 Lift the woofer out and cut the wires on both sides of the baffle as close as possi

25、ble to the baffle. Note: Do not cut the wires going to the surround woofer. 6. Woofer Replacement 6.1 Drill a hole in the baffle, close to the hole where the woofer wires are fed through the baffle. 6.2 Insert the new wire harness (part number 187097) into the hole and connect it to the woofers (3).

26、 Apply Mortite to the hole in the baffle to prevent air leaks around the new wire harness hole. 6.3 Replace the four screws (6) that secure the woofer to the baffle. 6.4 Perform procedure 2. 6 DISASSEMBLY/ASSEMBLY PROCEDURES CUBE ARRAY Note: Numbers in parentheses correspond to the item call outs in

27、 Figure 3. 1. Grille Removal 1.1 Grasp the grille (13) at the top and bottom. Catches on the sides hold the grille to the cube (2). Squeeze and pull the grille off. 2. Grille Replacement 2.1 Line up the grille (13) so that the curved edges are located at the top and bottom. Push the grille onto the

28、cube (2) until it snaps into place. The bottom grille should have the Bose logo in the lower right hand corner. 2. Twiddler Removal 2.1 Perform procedure 1 first. 2.2 Remove the four screws (9) that secure the twiddler (11) to the cube array (2). Lift the twiddler out of the cube array. 2.3 Cut the

29、wires as close as possible to the twiddler. Note: Make a note of the wiring configura- tion. 3. Twiddler Replacement 3.1 Connect the wires to the twiddler (11). 3.2 Replace the four screws (9) that secure the twiddler to the cube array (2). 3.3 Perform procedure 2. 7 Figure 3. Cube Array Exploded Vi

30、ew SURROUND WOOFER? (NOT SERVICEABLE) BAFFLE REMOVE WOOFER? THROUGH OPENING 1 6 5 8 2 3 4 7 6 Figure 2. Bass Module Exploded View 1 2 12 9 10 5 6 3 11 4 BLACK GRAY BLACK RED GRAY RED (8X) (4X) (2X) (2X) 7 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

31、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 8 13 13 8 TEST PROCEDURES 1. Woofer Rub and Tick Test 1.1 Apply a 10Vrms, 10Hz signal to the front left and right input. Note: No extraneous noises such as rubbing, scraping or ticking should be heard. To distinguish between normal suspension nois

32、e, rubs and ticks, displace the cone on the woofer with your finger. If the sound can be made to go away or get worse, its a rub or tick and the woofer should be replaced. If the noise stays the same, its normal suspension noise and it will not be heard with regular program material. Perform this te

33、st for the surround channel. 2. Power Sweep Test 2.1 Apply a 10Vrms, 10Hz signal to all the bass module inputs. 2.2 Sweep the oscillator slowly from 10Hz to 1KHz and back to 10Hz. 2.3 Listen carefully for any buzzes, rattles or extraneous noises coming from the bass module or cubes. Note: Redress an

34、y wire or component that buzzes. 3. Woofer Phase Test, Front Channels 3.1 Apply a 10Vrms, 50Hz signal to the left and right front channels. 3.2 Disconnect the right channel. If the sound output from the bass module drops by approximately 1/2, the woofer is in phase. If the sound output from the bass

35、 module increases, stays the same or stops completely, the woofer may be wired incorrectly or be defective. 4. Woofer Phase Test, Surround Channel 4.1 Apply a 10Vrms, 50Hz signal to the left and right surround channels. 4.2 Disconnect the left surround channel. If the sound output from the bass modu

36、le drops by 1/2, the woofer is in phase. If the sound output from the bass module in- creases, stays the same or stops com- pletely, check for incorrect wiring at the crossover assembly. Note: The surround woofer is not service- able. 5. Air Leak Test 5.1 Apply a 10Vrms, 10Hz signal to the left and

37、right surround channel input. 5.2 Listen at the bass module port for internal air leaks coming from inside the unit. 5.3 Apply a 10Vrms, 50Hz signal to all the bass module inputs. 5.4 Listen for air leaks from the bass module. 6. Twiddler Phase Test 6.1 Apply 9V DC to the cube input termi- nal. Conn

38、ect the positive side of the DC supply to the positive side of the cube. Connect the negative side of the DC supply to the negative side of the cube. The twiddler should move outward. Note: The DC voltage should only be momentarily applied to avoid possible damage to the twiddler. 9 7. Crossover Tes

39、t 7.1 Both woofer harnesses should be disconnected. Connect an 8.2 resistive load to the cube speaker output being tested. Apply a 1Vrms signal to the input at the frequency listed in the following table. Reference a dB meter to the applied signal. Measure the output listed in the following table. T

40、EST PROCEDURES Input/OutputFrequencyMin (dB) Max (dB) Left or Right200Hz-6-4 Left or Right2kHz-4.9-3.8 Center, Left and Right Surround 200Hz-1.5-0.5 Center, Left and Right Surround 2kHz-2.2-0.8 Note: If the Crossover fails any of these tests, refer to the table below. Input/Output Frequency Check Le

41、ft or Right 200Hz C11,12 Left Channel C31, 32 Right Channel Left or Right 2kHz C13, L11, R11 Left Channel C33, L31, R31 Right Channel Center, Left and Right Surround 200Hz C21, C22 Center Channel C41, C42 Left Surr Channel C51, C52 Right Surr Channel Center, Left and Right Surround 2kHz C23, L21, R21 Center Channel C43, L41, R41 Left Surr Channel C53, L51, R51 Right Surr Channel 10 PART LIST NOTES 1. This part is not normally available from Customer Servi