Bose 131 Manuale utente
®
®
Bose®131™ Marine
Loudspeaker System
©1997 Bose Corporation Part Number 190318 REV 00
Service Manual
2
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
3
SPECIFICATIONS
PROPRIETARY INFORMATION
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF
BOSE®CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BYAN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE
BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED
FOR ANY OTHER PURPOSE.
CAUTION: THE BOSE®131™ LOUDSPEAKER CONTAINS NO USER-SERVICEABLE
PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY
SERVICE STATIONS OR FACTORY SERVICE.
External Dimensions: Single Speaker:
Packed System:
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"
Weight: Single Speaker:
Packed System:
1.8kg (4.0 LB)
4.3kg (9.5 LB)
Transducer: One 4.5" Driver per Speaker
Internal Cabinet Volume: 2.65 Liters
Impedance: 4Ωnominal (3.2Ωmin) 20Hz - 20kHz
Resonance Frequency: 90Hz
Power Handling: 40watts Continuous
(per IEC-268-5)
Sensitivity: 86dB SPL, Free-Field
(per IEC-268-5) 1w, 1m
4
DISASSEMBLY/ASSEMBLY PROCEDURE
Figure 1. Exploded View
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
3
1
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.
5
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, dis-
place 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: Awhooshing 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.
6
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.
7
PART LIST
Figure 2. Parts Exploded View
2
3X
8
12
13
14
15
16
3
1
6
7
9
10
11
17
18
4
5
19
Item
Number Description Qty Part
Number Note
1 Enclosure, Ldspkr, Model 131™ 2 188195-001 1
2Driver Assy, 4.5" 2 257948-001 10/2001
2 Driver Gasket, 4.5" 1 128407 not
shown
3 Screw, Tapp, 8-11x.75, pan, xrec 3 296495-012
4 Bag, Poly, 18"x12"x2" 1 175352
5 Carton, inner, Chipboard, 131 2 189730
6 Hardware kit 1 188198
7 Wire, 18/2 Zip Cord, BK, 20FT 2 130915
8 Grill, 8" Diameter 2 188193-001 2
9 Flange, Mounting 2 188192-001 2
10 Packing, Insert, 1 190505-001
11 Carton, Grill, Chipboard 1 189731
12 Manual, Owners 1 188201 3
13 Brochure, All Products 1 188898 3
14 Card, Info, Warranty, U.S. 1 181357 3
15 Card, Info, Warranty, Muti Lang 1 181460 3
16 Sheet, Warranty Service Stations 1 187981 3
17 Bag, Poly, Lit Kit 1 103351 3
18 Carton, Model 131 1 189732-001
19Grille, Assy (Sold as pairs) 1188194 4
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5
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