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LSR28P
JBL LSR28P User Manual
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54
LSR28P
PICTORIAL OF COMP
LETE AMPLIFIER ASSEMBLY
COMPONENT PARTS
LIST
Item
Part No.
Qty.
Description
1
124-58002-00x
1
Speaker low freq. 218F
2
123-10003-00X
1
Speaker H F M/I 053TI
3
226-00013-00
1
Main Amp Assy W/Heatsink
4
226-00012-00
1
Signal Input Assy
5
562-00032-00
1
Transformer
53
55
Table of Contents
Table of Contents
2
Product Overview
3
Overallfrequency Response
4
Servicing Notes and Disclaimers
5
Specifications
7
The Jbl Limited Warranty
8
Tools Necessary for Service
9
Service Protocols
10
A Word about Balanced and Unbalanced Inputs
12
Connector Wiring/Typical Bench Setup
13
Selectible Input Sensitivity
15
Block Diagram
16
Theory and Circuit Descriptions
17
Power Supply
18
Input Buffer Amplifier
19
Low Frequency Processing
21
Final Low Frequency Filter
22
Low Frequency Output Amplifier
23
High Frequency Output Amplifier
24
Fault Indication Circuitry
25
Troubleshooting Guide
26
Final Test Procedures
48
Exploded Views and Graphics
49
Wiring Diagram
52
Semiconductor Pinouts
53
Pcb Pictorials
54
Master Parts List
58
Electronic Failure Qa Codes
67
4
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JBL LSR28P Specifications
General
Brand
JBL
Model
LSR28P
Category
Speakers
Language
English
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