Bose LT 6400, Manual

Page: 24 / 35

24
LT 6403 and LT 9403 Crossover Board Layout Diagram
The LT 6403 and LT 9403 loudspeakers both use the same bare board for their crossover
assemblies. The only differences are the components populating the board. See the table below.
Reference Designator LT 6403 Crossover PCB
Component Values
LT 9403 Crossover PCB
Component Values
Capacitors
C1 40uF / 250V 40uF / 250V
C2 10uF / 200V 4.7uF / 200V
C3 40uF / 200V 40uF / 200V
C4 60uF / 200V Jumper
C5 4.7uF / 100V 4.7uF / 100V
C6 3.9uF / 100V 3.9uF / 100V
C7 20uF / 100V 20uF / 100V
C8 20uF / 100V 20uF / 200V
C9 5uF / 100V 5uF / 200V
Inductors
L1 6mh / 0.8 Ohms 6mh / 0.8 Ohms
L2 9mh / 1.1 Ohms 32mh / 1.6 Ohms
L3 .68mh / 0.7 Ohms .68mh / 0.7 Ohms
L4 .27mh / 0.4 Ohms .27mh / 0.4 Ohms
L5 1.2mh / 0.3 Ohms Jumper
L6 .68mh / 0.6 Ohms .68mh / 0.6 Ohms
L7 .82mh / 0.7 Ohms .82mh / 0.7 Ohms
L8 .56mh / 0.6 Ohms .56mh / 0.6 Ohms
Resistors
R1 10 Ohm / 15 Watt Jumper
R2 20 Ohm / 15 Watt 4 Ohm / 15 Watt
R3 10 Ohm / 15 Watt 20 Ohm / 15 Watt