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L212
JBL L212 Manuals
Manuals and User Guides for JBL L212. We have
2
JBL L212 manuals available for free PDF download: Owner's Manual, Technical Information
JBL L212 Owner's Manual (29 pages)
Loudspeaker System
Brand:
JBL
| Category:
Speaker System
| Size: 5.17 MB
Table of Contents
Contents
2
Specifications
2
Use and Intent of the Manual
3
System Description
3
Product View
3
Ultrabass
4
Circuit Description
5
Left- and Right-Channel Loudspeaker Systems
5
Block Diagram
6
Voltage Distribution and DC Rectifier Networks Diagram
7
Amplifier PC Board Block Diagram
7
Left- and Right-Channel Loudspeaker System Block Diagram
8
Frequency Dividing Network Schematic Diagram
8
Service
9
Recommended Test Equipment
9
Graph of Voltage Versus Frequency Response of Crossover Networks
9
Disassembly Procedures
10
Removal of Grilles
10
Bass Energizer Removal
10
Frequency Dividing Network Removal
11
Ultrapass Loudspeaker Removal
11
Reassembly
11
Problem Isolation Procedures
11
Flow Chart Symbols
12
Transistor Identification
12
Color Coding of Wires of the Frequency Dividing Network
12
Flow Charts
13
Component Isolation Procedures
18
Bass Energizer Component Isolation
18
Detailed Block Diagram of the Bass Energizer
18
Oscilloscope Traces of Bass Energizer Amplifier
18
Repair Procedures
19
Frequency Dividing Network Component Isolation
19
Proper Transistor Mounting Procedures
19
DC Offset Voltage Verification
20
Frequency Dividing Network
20
Electrical Parts List
21
PC Board Assembly and Circuit Trace
22
Schematic Diagrams
25
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JBL L212 Technical Information (3 pages)
JBL L212: Owners Manual
Brand:
JBL
| Category:
Speaker System
| Size: 0.1 MB
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