Bose Lifestyle SA-2 User manual

1
CONTENTS
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®Lifestyle®SA-2 & SA-3 amplifiers contain
no user-serviceable parts. To prevent warranty infractions,
refer servicing to warranty service stations or factory service.
SAFETYINFORMATION ....................................................................................................................2
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) DEVICE HANDLING ......................................2
WARRANTY........................................................................................................................................2
ELECTRICAL SPECIFICATIONS......................................................................................................3
MECHANICAL SPECIFICATIONS.....................................................................................................4
PRODUCT DESCRIPTION...............................................................................................................4
PART LIST NOTES ...........................................................................................................................4
PACKAGING PART LIST ..................................................................................................................5
Figure 1. Lifestyle® SA-2 Packaging View .........................................................................................5
PACKAGING PART LIST ..................................................................................................................6
Figure 2. Lifestyle®SA-3 Packaging View .........................................................................................6
MAIN PART LIST SA-2..........................................................................................................................7
Figure 3. Lifestyle®SA-2 Exploded View..............................................................................................7
ELECTRICAL PART LIST SA-2.......................................................................................................8-13
MAIN PART LIST SA-3........................................................................................................................14
Figure 4. Lifestyle® SA-3 Exploded View ..........................................................................................14
ELECTRICAL PART LIST SA-3.....................................................................................................15-24
SA-2 DISASSEMBLY PROCEDURES...........................................................................................25-26
SA-3 DISASSEMBLY PROCEDURES...........................................................................................27-29
TEST SET-UP ................................................................................................................................... 30
TEST PROCEDURES .......................................................................................................................31
Revision History................................................................................................................................... 32

2
SAFETY INFORMATION
1. Parts that have special safety characteristics are identified by the symbol on schematics
or by special notes on the parts list. Use only replacement parts that have critical characteristics
recommended by the manufacturer.
2. Make leakage current or resistance measurements to determine that exposed parts are
acceptably insulated from the supply circuit before returning the unit to the customer. Refer to
UL6500 clause 9.1.1. Use the following checks to perform these measurements:
A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord
directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak-
age current tester or a metering system that complies with American National Standards Institute
(ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL) 6500. With
the unit AC switch first in the ON position and then in OFF position, measure from a known earth
ground (metal waterpipe, conduit, etc.) to all exposed metal parts of the unit (antennas, handle
bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially any
exposed metal parts that offer an electrical return path to the chassis. Any current measured
must not exceed 0.5 milliamp. Reverse the unit power cord plug in the outlet and repeat test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTEN-
TIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE
CUSTOMER.
B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper
wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure
the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic
cabinet part on the unit. When the exposed metallic part has a return path to the chassis, the
reading should be between 1 and 5.2 Megohms. When there is no return path to the chassis, the
reading must be "infinite". If it is not within the limits specified, there is the possibility of a shock
hazard, and the unit must be repaired and rechecked before it is returned to the customer.
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS)
DEVICE HANDLING
This unit contains ESDS devices. We recommend the following precautions when repairing,
replacing or transporting ESDS devices:
•Perform work at an electrically grounded work station.
•Wear wrist straps that connect to the station or heel straps that connect to conductive
floor mats.
•Avoid touching the leads or contacts of ESDS devices or PC boards even if properly
grounded. Handle boards by the edges only.
•Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert
unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags,
bubble wrap or plastic trays.
The Bose®Lifestyle®SA-2 and SA-3 amplifiers are covered by a limited one year transferable warranty.
WARRANTY

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Voltage Variations: US: 120 Vrms
International: 220-240 Vrms
Maximum Power: SA-2: 40 Watts into 6 Ohms @ <0.1% THD
20 Hz to 10kHz
SA-3: 100 Watts into 6 Ohms @ < 0.2%THD
20 Hz to 10 kHz
Frequency Response: 20 Hz - 20 kHz,+/- 0.5 dB (at full volume)
Dynamic Equalization:
Voltage Gain (at 1 kHz): SA-2: 34.2 dB +/- 0.5 dB
SA-3: 38.2 dB +/- 0.5 dB
Input Impedance at (at 1 kHz): 10 k +/- 1 Ohms
Signal to Noise Ratio: 92 dB
Input Sensitivity: 0.3 Vrms at full volume produces rated
output power
Compressor: Range: 18 dB (minimum)
Attack Time: 1 dB/ 700uS
Release Time: 1 dB/10 mS
Distortion: <2%THD @100 Hz, 18 dB into compression
Turn-On Delay (to unmute): 1 second maximum at initial turn-on
0.2 second maximum from standby
Volume Control Range: 0 to -80 dB in 1 dB steps
Output DC offset: < 20 mVdc
Channel Balance: +/- 0.5 dB
Output Short-Curcuit Duration: Infinite (with no damage)
Standby Power Consumption: < 1 Watts (real power) at rated line voltage
ELECTRICAL SPECIFICATIONS
1E 1 1E 2 1E 3
FREQUENCY--HERTZ
-5
0
5
10
15
20
25
R
E
S
P
O
N
S
E
:
:
D
B
60 dB SPL
50 dB SPL
70 dB SPL
80 dB SPL
<40 dB SPL
90 dB SPL

4
MECHANICAL SPECIFICATIONS
Quiescent ON Power Consumption: SA-2: < 10 Watts
SA-3: < 15 Watts
Maximum Power Consumption: SA-2: < 220 Watts
SA-3: < 400 Watts
Size: SA-2: 3½”H x 14 1/8”W x 5½”D
(8.9cm x 35.9cm x 14cm)
SA-3: 4¼”H x 14 1/8”W x 5½”D
(11.4cm x 35.9cm x 14cm)
Weight; shipping: SA-2: 7.6 lbs. (3.4 kg)
SA-3: 11.1 lbs. (5 kg)
Enclosure Material: Housing: Die cast aluminum (A360)
Bottom: 20 Ga. steel plate
Finish: Textured black powdercoat
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.
PRODUCT DESCRIPTION
The SA-2 Amplifier is a 2 x 40W stereo audio amplifier intended to power Bose®161™, 191, 201®,
or AM-3 indoor “zone 2” loudspeakers. It is the next generation version of SA-1, updated to work
with the next generation media centers. It recognizes and responds to smart speaker II protocol
commands. The SA-3 Amplifier is a 2 x 100W stereo audio amplifier intended to power Bose high
SPL passive loudspeakers which can be used in second zone applications, specifically, 251®or
FS-51 (outdoor), AM-5®or 301®(indoor). SA-3 is the higher power version of SA-2, with two addi-
tional features: local audio source input and mono/stereo switch. The SA-3 recognizes and re-
sponds to smart speaker I (CD-5, CD-20, MRI) or II (AV18 and AV48) protocol commands.
Controls: Power switch (International version only)
Voltage select switch (Dual Voltage version
only)

5
PACKAGING PART LIST
Figure 1. Lifestyle®SA-2 Packaging View
Item
Number Description Part NumberNote
1 8 TO 9 PIN DIN ADAPTER 349714-0010
2 BAG, POLY, 14 3/8X9 7/8X2 MIL 103351
3 GLOBAL WARRANTY CARD, 1 YR. 324486-0010
4 SHEET, SAFETY 275072
5 OWNERS MANUAL English, Spanish,
French
275071
5 OWNERS MANUAL Danish, German,
Italian, Netherlands, Swedish,
279060
6 PACKING, INSERT 275424
7 CABLE, DIN-9, 20FT 272902-0220
8 LINE CORD, DETACH, BLK
US/DUAL VOLTAGE
220-240V, EURO
240V, UK
240V, AUS
198603-1310
280135-1310
280138-1310
284243-1310
3
9 PACKING, END CAP, EPS 275423
10 CARTON, RSC 293320
-- BAG,POLY,HDPE,18X26,1MIL 255354-001

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Item
Number Description Part Number Note
1 8 TO 9 PIN DIN ADAPTER 349714-0010
2 BAG, POLY, 14 3/8X9 7/8X2 MIL 103351
3 GLOBAL WARRANTY CARD, 1 YR. 324486-0010
4 SHEET, SAFETY 275072
5 OWNERS MANUAL English, Spanish, and
French
275071
5 OWNERS MANUAL Danish, German,
Italian, Netherlands, Swedish,
279060
6 PACKING, INSERT 275424
7 CABLE, DIN-9, 20FT 272902-0220
8 LINE CORD, DETACH, BLK
US/DUAL VOLTAGE
220-240V, EURO
240V, UK
240V, AUS
198603-1310
280135-1310
280138-1310
284243-1310
3
9 PACKING, END CAP, EPS 275423
10 CARTON, RSC 276289
-- BAG, POLY, 12X20X4 MIL 197405
PACKAGING PART LIST
Figure 2. Lifestyle®SA- 3 Packaging View
10
10
9
1
7
8
6
9
5
234

7
Item
Number Description Part Number Qty. Note
1 CONNECTOR, PLUG-IN, 4 PIN 272953-04 1
2 CONNECTOR, PLUG-IN, 2 PIN 272953-02 1
3 SCREW, HILO, 4-16x.375, PAN, XREC 288372-006 1
4 HOUSING, AMPLIFIER 271724-02 1 1
5 FOOT, RUBBER, PRESS FIT 197418 4
FOOT, CAP – TOP INSERT 271898 4
6 TAPE, PAD, INSULATING 328907-0020 1
7 PCB ASSY SA-2, US/CANADA, 120V 323980-021S 1 2
PCB ASSY, EURO, UK, AUS, 220/240V 323981-022S
8 PAD, THERMAL, AMP 320002-002 2
9 HEATSINK BAR 319884-001 1
10 TRANSFORMER, 120V 271727 1 3
TRANSFORMER, 230V 271790
11 PANEL, BOTTOM 271725-001 1
12 SCREW, TT, 8-32X0.5, PAN, XREC/SQ 289393-008 13
MAIN PART LIST
Figure 3. Lifestyle®SA-2 Exploded View
3
2
1
4
5
6
7
8
9
10
12
11

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ELECTRICAL PART LIST
Resistors
Reference
Designator Description Part Number NOTE
RT2 THERMISTOR, 10K, 5%, 0805 197229
RT3 THERMISTOR, 10K, 5%, 0805 197229
R1 100 OHM, 0603, .1W, 1% 191465-1000
R2 2.00 OHMS, 2512, 1W, 5% 181895-2R00
R3 22.1K, 0603, .1W, 1% 191465-2212
R4 4.99K, 0603, .1W, 1% 191465-4991
R5 4.02K, 0603, .1W, 1%, 191465-4021
R8 JUMPER, CHIP, 0805 133627
R9 JUMPER, CHIP, 0805 133627
R10 220 OHM, 2512, 1W, 5% 181895-2200
R11 10K, 0603, .1W, 1% 191465-1002
R12 150 OHMS, 0603, .1W, 1% 191465-1500
R13 432OHM, 0603, 100MW, 1% 191465-4320
R14 2K, 0603, .1W, 1% 191465-2001
R17 2.00K, 0805, .125W, 1% 133625-2001
R18 1206, 1/4W, 5%, 1.00K 124895-1025
R19 2.00 OHMS, 2512, 1W, 5% 181895-2R00
R20 1K, 0603, .1W, 1% 191465-1001
R22 1K, 0603, .1W, 1% 191465-1001
R23 1K, 0603, .1W, 1% 191465-1001
R24 1K, 0603, .1W, 1% 191465-1001
R25 1K, 0603, .1W, 1% 191465-1001
R26 2K, 0603, .1W, 1%, 191465-2001
R27 100K, 0603, .1W, 1% 191465-1003
R28 22.1K, 0603, .1W, 1% 191465-2212
R29 22.1K, 0603, .1W, 1% 191465-2212
R30 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R31 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R32 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R33 200K, 0603, .1W, 1% 191465-2003
R35 13.3K, 0603, .1W, 1% 191465-1332
R36 499 OHM, 0603, .1W, 1% 191465-4990
R37 499 OHM, 0603, .1W, 1% 191465-4990
R38 4.99K, 0603, .1W, 1% 191465-4991
R39 4.99K, 0603, .1W, 1% 191465-4991
R40 4.99K, 0603, .1W, 1% 191465-4991
R41 22 OHM, 0805, 1/10W, 5% 133626-2205
R42 20K, 0603, .1W, 1% 191465-2002
R44 20K, 0603, .1W, 1% 191465-2002
R45 20K, 0603, .1W, 1% 191465-2002
R46 1 MEG, 0805, 1/10W, 5% 133626-1055
R47 100K, 0805, .125W, 1% 133625-1003
R48 100K, 0805, .125W, 1% 133625-1003
R49 330 OHM, 2512, 1W, 5% 181895-3300
R50 4.02K, 0603, .1W, 1%, 191465-4021
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ELECTRICAL PART LIST
Resistors (continued)
Reference
Designator Description Part Number NOTE
R51 4.02K, 0603, .1W, 1%, 191465-4021
R52 4.02K, 0603, .1W, 1%, 191465-4021
R53 4.02K, 0603, .1W, 1%, 191465-4021
R54 4.02K, 0603, .1W, 1%, 191465-4021
R55 100 OHM, 0603, .1W, 1% 191465-1000
R56 100 OHM, 0603, .1W, 1% 191465-1000
R58 1.33K, 0603, 100MW, 1% 191465-1331
R59 1.07K, 0603, .1W, 1% 191465-1071
R60 332K, 1206, 1/4W, 1% 124894-3323
R61 332K, 1206, 1/4W, 1% 124894-3323
R62 332K, 1206, 1/4W, 1% 124894-3323
R101 10.0K, 0805, .125W, 1% 133625-1002
R102 10K, 0603, .1W, 1% 191465-1002
R103 20K, 0603, .1W, 1% 191465-2002
R104 7.5K, 0603, .1W, 1% 191465-7501
R105 49.9K, 0603, .1W, 1% 191465-4992
R106 2.49K, 0603, .1W, 1% 191465-2491
R107 274 OHM, 0603, .1W, 1% 191465-2740
R152 2K, 0603, .1W, 1% 191465-2001
R153 12.1K, 0603, .1W, 1% 191465-1212
R154 12.1K, 0603, .1W, 1% 191465-1212
R156 12.1K, 0603, .1W, 1% 191465-1212
R165 100K, 0603, .1W, 1% 191465-1003
R169 330 OHM, 0805, 1/10W, 5% 133626-3315
R171 3.9 OHM, 2512, 1W, 5% 181895-3R90
R172 1206, 1/4W, 5%, 1.00K 124895-1025
R180 2.00 OHMS, 2512, 1W, 5% 181895-2R00
R181 2.00 OHMS, 2512, 1W, 5% 181895-2R00
R201 1K, 0603, .1W, 1% 191465-1001
R202 1K, 0603, .1W, 1% 191465-1001
R203 1K, 0603, .1W, 1% 191465-1001
R204 1K, 0603, .1W, 1% 191465-1001
R205 1K, 0603, .1W, 1% 191465-1001
R206 1K, 0603, .1W, 1% 191465-1001
R207 1K, 0603, .1W, 1% 191465-1001
R252 274 OHM, 0603, .1W, 1% 191465-2740
R253 12.1K, 0603, .1W, 1% 191465-1212
R254 2K, 0603, .1W, 1% 191465-2001
R256 2K, 0603, .1W, 1% 191465-2001
R265 100K, 0603, .1W, 1% 191465-1003
R269 100K, 0603, .1W, 1% 191465-1003
R271 100K, 0603, .1W, 1% 191465-1003
R272 100K, 0603, .1W, 1% 191465-1003
R278 22.1K, 0603, .1W, 1% 191465-2212
R279 22.1K, 0603, .1W, 1% 191465-2212


10
ELECTRICAL PART LIST
Resistors (continued)
Capacitors
Reference
Designator Description Part Number NOTE
R280 22.1K, 0603, .1W, 1% 191465-2212
R281 22.1K, 0603, .1W, 1% 191465-2212
R301 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R302 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R303 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R304 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R305 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R306 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R307 100 K, ARRAY, SMT, 4 POS, 5% 186433-1044
R401 4.99K, 0603, .1W, 1% 191465-4991
R402 4.99K, 0603, .1W, 1% 191465-4991
R403 4.99K, 0603, .1W, 1% 191465-4991
R501 4.02K, 0603, .1W, 1%, 191465-4021
R502 4.02K, 0603, .1W, 1%, 191465-4021
R503 4.02K, 0603, .1W, 1%, 191465-4021
R900 619 OHM, 0603, .1W, 1% 191465-6190
R901 1.82K, 1/10W, 1%0603 191465-1821
R905 JUMPER, CHIP, 0603 196042

Reference
Designator Description Part Number NOTE
C1 0.047uF, 0805 , X7R, 100V, 10% 293862-473
C2 0.047uF, CAP, 0805, X7R, 100V, 10% 293862-473
C5 .33uF, BOX, 85, 50V, 5% 137127-334
C6 .33uF, BOX, 85, 50V, 5% 137127-334
C7 .33uF, BOX, 85, 50V, 5% 137127-334
C10 10000UF, EL, 85, 50V, 20% 170215
C11 .47uF, film, 10%, 250VDC 250104-474A
C12 1uF, EL, 85C, 20%, 50V 177902-010H
C13 47uF, EL, 85C, 20%, 16V 177902-470C
C14 .047UF, 0603, X7R, 50V 191470-473
C15 .047UF, 0603, X7R, 50V 191470-473
C16 39pF, C0G, 0603, 50V, 5% 188454-390
C17 .33uF, 1206, X7R, 100V, 10% 279056-334
C18 .33uF, 1206, X7R, 100V, 10% 279056-334
C19 .33uF, 1206, X7R, 100V, 10% 279056-334
C20 .33uF, 1206, X7R, 100V, 10% 279056-334
C21 .33uF, 1206, X7R, 100V, 10% 279056-334
C22 .047UF, 0603, X7R, 50V 191470-473
C23 100pF, C0G, 0603, 50V, 5% 188454-101
C24 100pF, C0G, 0603, 50V, 5% 188454-101
C25 100pF, C0G, 0603, 50V, 5% 188454-101
C26 0.47uF, EL, 85C , 20%, 50V 177902-R47H
C28 0.47uF, EL, 85C , 20%, 50V 177902-R47H
