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James B. Lansing Sound, Inc. maintains a Tech
nical Service Department, to help JBL owners with
their individual problems. If you cannot find the
answer you need in published JBL literature or
obtain it from your Audio Specialist,
write
us.
All JBL precision transducers are fully guaran
teed against defects in materials and workman
ship. Be sure to fill out and mail the warranty card
immediately.
APPLICATION
J B L p r e c i s i o n n e t w o r k s use c i r c u i t s c a r e f u l l y de
signed to give an imperceptible t r a n s i t i o n f r o m
low to h i g h frequency transducers. U n l i k e o r d i n a r y
all-purpose n e t w o r k s , each J B L c i r c u i t is specifi
cally engineered to m a t c h the c h a r a c t e r i s t i c s o f
the J B L transducers w i t h w h i c h i t is used, and
should n o t be connected to components f o r w h i c h
i t is not designed. Components w h i c h m a t c h each
of the J B L d i v i d i n g n e t w o r k s are l i s t e d i n the
table below:
CROSSOVER
NETWORK
FREQUENCY
MODEL
500
N500
LX5
500
LX7
500
N1200
1200
LX10
1500
LX8
2000
LX11
2500
LX2
2500
N2400
2500
7000
N7000
LOW
HIGH
HIGH
FREQUENCY
FREQUENCY
FREQUENCY
TRANSDUCER
TRANSDUCER
CONTROL
150-4's
Strapping
375
150-4C
Bar
375, LE175,
3-position
LE15A
LE85
switch
3-position
LE14A
LEI 75
switch
0130, D131,
3-position
LE175
130A, 130B's
switch
Continuously
LE14A
LE175
variable
3-position
LE14A
LE20
switch
3-position
LE10A
LE20
switch
D123, D208,
Continuously
LE20
D216
variable
D130, 0131,
Continuously
075
D123
variable
Any two-way
Continuously
075
system
variable
please
INPUT
SHIPPING
IMPEDANCE
WEIGHT
(OHMS)
(LBS.)
16
16
8
10
8
10
9
8
8
3
3
8
3
8
8
3
4
8
3
4 to 16
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