Text preview for : Speaker 131.pdf part of Bose 131 Speaker Service Manual 131 Marine Speaker
Back to : Speaker 131.pdf | Home
® ®
Bose® 131TM Marine Loudspeaker System
©
1997 Bose Corporation
Service Manual
Part Number 190318 REV 00
Contents
Specifications ................................................................................................................................... 2 Disassembly/Assembly Procedure ................................................................................................ 3 Figure 1. Exploded View .................................................................................................................. 3 Test Procedure ................................................................................................................................. 4 Part List Notes .................................................................................................................................. 5 Part List ............................................................................................................................................. 6 Figure 2. Parts Exploded View ......................................................................................................... 6
2
SPECIFICATIONS
External Dimensions: Single Speaker: Packed System: Weight: Single Speaker: Packed System: Transducer: Internal Cabinet Volume: Impedance: Resonance Frequency: Power Handling: Sensitivity: One 4.5" Driver 2.65 Liters 4 nominal (3.2 min) 90Hz 40watts Continuous (per IEC-268-5) 86dB SPL, Free-Field (per IEC-268-5) 1w, 1m 20Hz - 20kHz 30.5 x 16.5 x 12.7cm 12" x 6.5" x 5" 35.5 x 30.5 x 19.7cm 14" x 12" x 7.75" 1.8kg (4.0 LB) 4.3kg (9.5 LB) per Speaker
CAUTION: THE BOSE® 131TM LOUDSPEAKER CONTAINS NO USER-SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SERVICE.
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.
3
DISASSEMBLY/ASSEMBLY PROCEDURE
1. Driver Removal Note: Numbers in parentheses correspond to the callouts in Figure 1. 1.1 Remove the three screws (3) that secure the driver to the enclosure (1). 1.2 Lift the driver (2) out of the enclosure. 1.3 Cut the two wires connected to the driver as close to the terminals as possible and remove the driver. 2. Driver Replacement 2.1 Connect the two wires to the driver's terminals. The red wire connects to the + terminal and the black wire connects to the - terminal. 2.2 Secure the driver (2) to the enclosure (1). Be sure to align the gasket to provide an airtight seal. 2.3 Check the driver's response using the test procedure in this manual.
3
2
1
Figure 1. Exploded View 4
TEST PROCEDURE
1. Phase Test 1.1 Momentarily apply 13.3 ± 1Vdc to the speaker input terminals. Observe polarity when connecting the dc power supply. The driver should move outward. 2. Air Leak Test 2.1 Apply a 6Vrms, 10-15Hz signal to the speaker input terminal. 2.2 Listen for air leaks around the driver and the enclosure. There should be no audible air leaks. 3. Rub and Tick Test 3.1 Apply a 6Vrms, 10Hz signal to the speaker input terminals. 3.2 No extraneous noise such as rubbing, scraping or ticking should be heard. Note: To distinguish between normal suspension noise and rubs or ticks, displace the cone of the driver slightly with your fingers. If the noise can be made to go away or get worse, it's a rub or tick and the driver should be replaced. If the noise stays the same, it's normal suspension noise and it will not be heard with program material. 4. Power Sweep Test 4.1 Apply a 6Vrms, 10-15Hz signal to the speaker input terminals. 4.2 Sweep the speaker from 10Hz to 15kHz. The sweep rate shall be 3-5 seconds for increasing and decreasing sweep. Note: A whooshing noise from the port at approximately 90Hz is acceptable. 4.3 Listen for any buzzes, rattles, or other extraneous noises. Replace any driver that fails, and redress any wires that might buzz.
5
PART LIST NOTES
1. This part might not be available from Customer Service. Approval from the Field Service Manager is required before ordering. 2. These items are part of an assembly and might not be available separately. 3. These items are part of the Lit Kit. 4. Grille assembly contains Item Numbers 8, and 9.
6
PART LIST
Item Number 1 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Description Enclosure, Ldspkr, Model 131TM Driver Assy, 4.5" Driver Gasket, 4.5" Screw, Tapp, 8-11x.75, pan, xrec Bag, Poly, 18"x12"x2" Carton, inner, Chipboard, 131 Hardware kit Wire, 18/2 Zip Cord, BK, 20FT Grill, 8" Diameter Flange, Mounting Packing, Insert, Carton, Grill, Chipboard Manual, Owners Brochure, All Products Card, Info, Warranty, U.S. Card, Info, Warranty, Muti Lang Sheet, Warranty Service Stations Bag, Poly, Lit Kit Carton, Model 131 Grille, Assy
9 8
Qty 2 2 1 3 1 2 1 2 2 2 1 1 1 1 1 1 1 1 1 1
Part Number 188195-001 135491-5 128407 173556-12 175352 189730 188198 130915 188193-001 188192-001 190505-001 189731 188201 188898 181357 181460 187981 103351 189732-001 188194
6 7
Note 1 not shown
2 2
3 3 3 3 3 3 4
10
3X 3
2
12 13 14 15 16 4 17
19
11
18 5 1
Figure 2. Parts Exploded View 7