Bose 301 Series V Manuale utente

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.

CAUTION: The Bose®Model 301®Series Vloudspeaker contains

no user-serviceable parts. To prevent warranty infractions,

refer servicing to warranty service stations or factory service.

WARRANTY

The Bose Model 301 Series V loudspeaker is covered by a five-year limited warranty.

Contents

Warranty ............................................................................................................................................. 1

Specifications ....................................................................................................................................2

Technical Description .......................................................................................................................2

Disassembly/Assembly Procedures ........................................................................................... 3-4

Figure 1. Woofer Wiring Configuration ...............................................................................................3

Figure 2. Test Equipment Set Up .......................................................................................................4

Test Procedures ................................................................................................................................5

Main Part List.....................................................................................................................................6

Figure 3. Exploded View ...................................................................................................................6

Crossover Part list ............................................................................................................................7

Figure 4. Crossover Diagram............................................................................................................7

Packaging Part List ...........................................................................................................................8

Figure 5. Packaging Exploded View .................................................................................................. 8

SPECIFICATIONS

PRODUCT DESCRIPTION

Dimensions: Single Speaker: 9.375" H x 14.625" W x 9.375" D

(25 x 36 x 25 cm)

Weight: Packed pair: 28.7 lb (16.5 kg)

Single speaker: 12.5 lb (5.7 kg)

Transducer

complement: One 8" woofer

Two 2" tweeters

Internal cabinet

volume: 961 cu in (15.8 liters)

Port: Description: Dual flared ports molded as part of the rear panel

ports tuned to 48 Hz

Low frequency cutoff: -3 dB at 55 Hz or lower

Impedance: 6 Ohms 4.8 Ohms minimum, 50 Hz to 15 kHz

per IEC-268-5

Power handling: 75 W (21.2 Vrms) continuous per IEC 268-5 for a

duration of 100 hours. Recommended amp/receiver

power 10 to 150 Watts per channel

Sensitivity: 1Vrms, 1 meter: = 79 dB SPL, 400 Hz octave

The Bose®301®Series Vis a replacement for the 301 Series IV speaker, and is a passive,

two-piece (mirror imaged stereo pair) home loudspeaker in a bookshelf configuration.

The 301 Series Vis designed for use with standard amplifiers, receivers, and other related

home audio components.

The 301 Series Vutilizes separate inward and outward firing tweeters to achieve consistent

stereo imaging over a broad listening area (Stereo Everywhere®performance) while maintain-

ing a spacious sound stage.

Aesthetically, the 301 Series Vechoes styling cues successfully used in the 601®Series IV

and the 701®Series II, and has a family resemblance to the 201®Series V. The 301 Series V

features a molded plastic front panel, integrated with a vinyl-covered particle board enclosure.

Additionally, the system incorporates slot-port technology which reduces port noise and pro-

duces cleaner, more natural bass. The sum of all these unique features makes the 301 Series

Vspeaker capable of reproducing the wide dynamic range demanded by today's advanced

recordings without strain or loss of clarity.

DISASSEMBLY/ASSEMBLY PROCEDURES

Note: Refer to figure 3 for the following

procedures.

1. Grille Removal

1.1 Grasp the top and bottom edges of the

grille (12) and pull off the grille.

2. Grille Replacement

2.1 Align the grille (12) so that the Bose®

logo (11) is right side up on the tweeter

side of the cabinet and push it into place.

3. Woofer Removal

3.1 Perform procedure 1.

3.2 Remove the four screws (13) that

secure the woofer (14) to the cabinet.

3.3 Lift the woofer out and cut the wires as

close to the terminals as possible.

4. Woofer Replacement

4.1 Strip the wires and connect the wires as

shown in figure 1. The red wire to the single

center terminal. The black wire to the right

side double terminal (looking at the woofer

magnet side down). The orange and green

wires to the left double terminal. The

capacitor is connected to the far left and

right terminals.

4.2 Secure the woofer (14) to the cabinet

using four screws (13).

4.3 Perform procedure 2.

5. Front Tweeter Removal

5.1 Perform procedures 1, 3.2 and lift the

wooter out of the cabinet, but do not cut the

wires.

5.2 Using a 1/4 inch socket, remove the

screw (6) and bracket (7) that secures the

tweeter (8) to the cabinet.

5.3 Lift the tweeter out of the cabinet and

cut the wires as close to the terminals as

possible.

6. Front Tweeter Replacement

6.1 Strip the wires and connect the red

wire to the positive (+) terminal and the

black wire to the negative (-) terminal.

Dress or twist the wires to prevent buzzes.

6.2 Place the tweeter (8) into the cabinet

and secure it using the tweeter bracket (7)

and screw (6).

6.3 Perform procedures 4.2 and 2.

7. Rear Tweeter Removal

7.1 Perform procedures 1, 3.2 and lift the

woofer out of the cabinet, but do not cut the

wires.

7.2 Using a 1/4 inch wrench, remove the

screw (1) and bracket (2) that secures the

tweeter (3) to the cabinet.

7.3 Lift the tweeter out of the cabinet and

cut the wires as close to the terminals as

possible.

Figure 1. Woofer Wiring Configuration

orange

green

red

black

DISASSEMBLY/ASSEMBLY PROCEDURES

9. Terminal Block Connector Removal

9.1 Perform procedures 1, 3.2 and lift the

woofer out of the cabinet, but do not cut the

wires.

8. Rear Tweeter Replacement

8.1 Strip the wires and connect the red wire

to the positive (+) terminal and the black

wire to the negative (-) terminal. Dress or

twist the wires to prevent buzzes.

8.2 Place the tweeter (3) into the cabinet

and secure it using the tweeter bracket (2)

and screw (1).

8.3 Perform procedures 4.2 and 2.

9.2 Unclip the terminal block connector

(4) from the inside of the cabinet and push

it out through the rear panel. Cut the wires

as close to the terminals as possible.

10.1 Terminal Block Connector

Replacement

10.1 Strip the wires and connect the red

wire to the positive (+) terminal and the

black wire to the negative (-) terminal.

Dress or twist the wires to prevent buzzes.

10.2 Secure the terminal block connector

(4) to the cabinet.

10.3 Perform procedure 4.2 and 2.

Audio Signal

Generator

Power Amplifier

Input Output

Speaker

Figure 2. Test Equipment Set Up

TEST PROCEDURES

Note: Remove the grille for the following

tests.

General Test Set Up

Connect the output of a signal generator to

the input of a power amplifier. Connect the

output of the power amplifier to the input

terminals of the speaker under test. Refer

to figure 2, (on page 4) test equipment set

up.

1. Woofer Rub and Tick Test

1.1 Apply a 7 Vrms, 10 Hz signal to the

input terminals of the speaker under test.

No extraneous noises such as rubbing,

scraping or ticking should be heard.

Note: To distinguish between normal sus-

pension noise and rubs or ticks, displace

the cone on the woofer slightly with your

fingers. If the noise can be made to go

away or get worse, it is a rub or a tick and

the woofer should be replaced. If the noise

stays the same, it is a normal suspension

noise and the woofer is fine. Suspension

noises will not be heard with program

material.

2. Air Leak Test

2.1 Apply a 7 Vrms, 35 Hz signal to the

input terminals of the speaker under test.

2.2 Listen for air leaks around the woofer,

tweeters and cabinet seams. Any air leaks

will be heard as a sputtering or hissing

sound.

2.3 Replace or reposition any gasket where

an air leak can be heard.

3. Sweep Test

3.1 Apply a 7 Vrms, 10 Hz signal to the

input terminals of the speaker under test.

3.2 Sweep the input generator from 10 Hz

to 5 kHz. There should be no extraneous

sounds.

3.3 Reduce the input voltage to 3 Vrms, and

continue sweeping from 5 kHz to 15 kHz.

3.4 Redress any wires or components that

buzz or rattle. Replace any woofer or

tweeter that is found to be defective.

4. Phase Test

Note: The supply voltage should only be

momentarily applied to the speaker input

terminals to avoid possible damage to the

speaker.

4.1 Set a DC power supply to 9 volts.

Connect the positive wire from the power

supply to the positive (+) connector of the

input terminal and the negative wire to the

negative (-) connector of the input terminal.

The woofer should move outward with the

application of the supply voltage.

MAIN PART LIST

Figure 3. Exploded View

Item

Number

Description Part

Number

Qty. Note

1 SCREW, MACH, SEMS, 8-32, HEX 256070-08 1

2 CLIP, TWTR RETAIN, REAR 264973-03 1

3 TWEETER, 2", REAR

TWEETER, 2", REAR, SHLD

290845-01

290836-01

4 CONN, BARRIER GLTN, 2 POS 181865 1

5 BATTING, POLYESTER 116082 or 260336 1

6 SCREW, MACH, SEMS, 8-32, HEX 256070-08 1

7 CLIP, TWTR RETAIN, FRONT 264973-01 1

8 TWEETER, 2", FRONT, (WITH SLIVER TRIM SKIRT)

TWEETER, 2", FRONT, (WITH BLACK TRIM SKIRT)

290847-01

290813-01

9 GASKET, WOOFER, 8" 266118 1

10 GROMMET, GRILLE SOCKET 176068 4

11 NAMEPLATE, LOGO 266108 1

12 GRILLE ASSY, BLACK 266105-01 1

13 SCREW, TAPP, 8-11 x .75, PAN, XRC/SQ 172672-12 4

14 WOOFER ASSY, 8", (WITH TRIM RING) 289908-001 1

Note 4: When replacing the tweeters, replace with like tweeter.

If the front tweeter has a silver trim use 290845-01 for the rear and 290847-01 for the front

If the front tweeter has a black trim, use 290836-01 for the rear and 290813-01 for the front

CROSSOVER PART LIST

Reference Designator Description Part Number

Note

C1 4.0uF, EL, BP, 85°C, 50V, 10% 116542

C2 15uF, EL, BP, 85°C, 50V, 10% (ON

WOOFER)

126798

RT1 LAMP, MINI, 1.5A, 36VDC 141989

Figure 4. Crossover Diagram

PACKAGING PART LIST

Item

Number

Description Part

Number

Qty.

Note

1 MANUAL, OWNER'S 264981 1

2 INFO CARD, WARRANTY, MULTI LANG 181460 1

3 CARD, REGISTRATION AND WARRANTY 262933 1

4 BUMPER, FOOT, ADH BACKED, 8-CT 173012-08 1

5 ADDRESS PAGE 259434 1

6 SHEET SLIP ALL PRODUCTS 255808 1

7 COMMITMENT LETTER 251001 1

8 BAG, POLY, 14.38" x 9.87" x 2 mil 103351 1

9 BAG, POLY, HDPE 13.5" x 35" x 9.5" x 1MIL 114522 1

10 PACKING, EPS 266123 4

11 CARTON, RSC 266122-01 1

Figure 5. Packaging Exploded View

Part Number 267215 Rev. 00

Service Manual

Bose®Model 301®Series V

Loudspeaker

SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE

Bose Corporation

The Mountain

Framingham Massachusetts USA 01701

P/N: 267215 Rev. 00 10/2002 (H) FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-223-4408

http://serviceops.bose.com

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