Bose 151SE Service Manual

Model 151SE® Environmental Speaker

©2008 Bose Corporation Service Manual

Reference Number 273701-SM

Rev. 01

CONTENTS

Warranty Information........................................................................................................................2

Product Description..........................................................................................................................2

Proprietary Information ....................................................................................................................2

Specifications....................................................................................................................................3

Packaging Part List............................................................................................................ ...............4

Figure 1. Packaging Exploded View ...................................................................................................4

Main Part List ....................................................................................................................................5

Figure 2. Part Exploded View..............................................................................................................5

Crossover Part List ...........................................................................................................................6

Figure 3. Crossover PCB Schematic ..................................................................................................6

Disassembly Procedures ........................................................................................................... 7-10

Wiring Diagram .................................................................................................................................9

Test Procedures ..............................................................................................................................10

Service Manual Revision History...................................................................................................11

PROPRIET ARY INFORMA TION

THIS DOCUMENT CONT AINS PROPRIETAR Y 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.

W ARRANTY INFORMATION

The Bose 151SE® Environmental Speaker is covered by a five year transferable warranty.

PRODUCT DESCRIPTION

The Bose 151SE Environmental Speaker offers an advanced design with quality construction.
Each loudspeaker contains three 1.4 ohm environmentally resistant Twiddler® speakers in a
horizontal arc-shaped 2.2 liter ported enclosure. A protection and equalization circuit is located
on the pcb attached to the rear half of the speaker. The speaker has an aluminum grille with a
logo which rotates in 90 degree increments. The 151SE is available in black and white.

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SPECIFICATIONS

Transducers: Three 2.5” environmental Twiddler® speakers per enclosure
Impedance: 6 Ohms nominal (4.8 Ohms minimum) 20-20kHz
Power Handling: 50 W (17.3Vrms) continuous per IEC-268-5

Recommended amp/receiver power 10-100W per channel
System Protection: PTC in parallel with a capacitor
Sensitivity: 89.5dB SPL at 2.83V, 1meter, 2kHz-octave band
Flux Leakage: N/A, not shielded; not for use near a video monitor
External Dimensions: 12.3” x 4.5” x 6.2” (31.2cm x 11.4cm x 15.8cm)
Weight: Single Speaker: 4.6lb. (2.1 kg)

Packed Pair: 11.7 lb. (5.3 kg)

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 PCBs are listed in the Electrical 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.

4. This part is referenced for informational purposes only. It is not stocked as a repair part. Refer
to the next higher assembly for a replacement part.

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PACKAGING PART LIST

Item

Description Part Number Qty.

Number

1 CARTON, RSC, 17.00X14.19X7.25, C 294090 1
2 PACKING, EPS, TOP/BOTTOM, 151 II 273823-01 2
3 BRACKET, SINGLE, KIT, BLK, UV 315948-004 2

BRACKET, SINGLE, KIT, WHT, UV 315948-005

4 GUIDE, OWNERS, 151 II 273809 1
5 CARD, REGIST. AND WARRANTY 262933 1
6 BAG, POLY, 14.38x9.87x2 mil 103351 1
7 COMMITMENT LETTER 251001 1
8 HARDWARE KIT, 151 SE 292523-002 1
9 BAG, POLY, 16X18 253804 2 4

7

2

456

2x

2x

3

1

8

9

2x

Figure 1. Packaging Exploded View

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