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Bose L1 II User Manual
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55
Figure 10. L1
®
Model II Power St
and Wiring Diagram
AC Power
Switch
D124
D121
D122
D123
P1
F1
P3
P4
TRANSFORMER
P5
J105
AC INLET
J101
P2
OUT JACK
BASS OUT
CN101A
U116
U115
U118
U117
U103
J100
U100
U101
U102
VR1
B2 AMP OUTPUT
J301B
J301L
U109
D126
D125
D120
D119
U104
U108
U105
U107
U120
POWER SUPPLY
SECTION
DSP SECTION
Q113
CN101
CN102
J103
J303L
J303B
U110
U113
U114
CN110A
U106
J104
J302L
J302B
J302
J301
CON301
CON300
J303
CON300
J303
CON301
J301
J302
FAN2 CONTROL
FAN1 CONTROL
F
AN 1
F
AN 2
L2 SPEAKER OUT
L2 AMP AC POWER
IN
L2 AMP +/-18V
L2 AMP OUTPUT
L2 AMP CONTROL SIGNAL
L2 AMP SIGNAL IN
L2 AMP
B2 AMP
B2 AMP
AC POWER IN
B2 AMP +/-18V
B2 AMP OUTPUT
B2 AMP CONTROL SIGNAL
B2 AMP SIGNAL IN
B2 OUTPUT
CN301B-B
54
56
Table of Contents
Table of Contents
2
Safety Information
3
Warranty
3
Specifications
4
Electrostatic Discharge Sensitive (ESDS) Device Handling
5
Part List Notes
5
Product Description
6
System Components
6
Setting up the L1 ® Model II Power Stand
7
Assembling the L1 Model II Cylindrical Radiator Loudspeaker
7
Connecting the B1 Bass Module
8
L1 Model II Power Stand Input and Output Connectors, Controls
8
Setting the Analog Input Level on the L1 Model II Power Stand
9
Adding a T1 Tonematch Audio Engine
9
Packaging Part List, L1 Model II Power Stand (See Figure 1)
10
Packaging Part List, L1 Model II Line Array (See Figure 2)
11
Packaging Part List, B1 Bass Module (See Figure 3)
12
Main Part List, Power Stand to Leg Assembly (See Figure 4)
13
Main Part List, L1 Model II Power Stand Upper Housing (See Figure 5)
14
Main Part List, L1 Model II Power Stand Cavity and Leg Assembly (See Figure 6)
16
Main Part List, L1 Model II Line Array (See Figure 7)
18
Main Part List, L1 Model II Line Array End Cap Assemblies (See Figure 8)
20
Main Part List, B1 Bass Module Exploded View (See Figure 9)
22
Electrical Part Lists
23
Input/Output PCB Assembly
24
Power Amplifier PCB Assembly
35
AC Primary PCB Assembly
40
Disassembly Procedures
41
Test Procedures
47
Appendix
51
Theory of Operation
56
Circuit Board Layout Diagrams
62
Service Manual Revision History
69
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Bose L1 II Specifications
General
Brand
Bose
Model
L1 II
Category
Control Unit
Language
English
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