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Low Frequency
While
Red
Green
Black
Dividing Network
When reconnecting the wire leads between the network, input
terminals and high frequency direct radiator, proper polarity is
assured by the c o n n e c t o r s . C o n n e c t i o n s to the other c o m p o n e n t s
are color c o d e d as s h o w n .
Replacement
- R e v e r s e the removal procedure to replace
the system c o m p o n e n t s . Mounting screws should be tight-
ened evenly and just e n o u g h to avoid air leaks between the
c o m p o n e n t s and the enclosure.
M a i n t e n a n c e
The grille cloth is a double knit polyester fabric selected for
acoustic transparency, beauty, physical strength, color fast-
ness and soil resistance. It can be cleaned by gently dusting
it with a v a c u u m cleaner. Stains can be removed by using
aerosol cleaners, such as Texize
Quick n Easy,
or Pen C h a m p
turer's instructions.
Warning: Cleaning fluids or other solvents should not be used.
Although they may appear to remove a stain, liquid cleaners will
dissolve the base paint on the grille frame beneath the cloth,
resulting in permanent discoloration of the material.
Occasional dusting with a clean, soft cloth will maintain the
finish of the enclosure. Since both the textured gray and oiled
walnut surfaces are moisture resistant, a d a m p cloth will
remove most stains. Mild detergent may be used on the gray
finish to remove smudges or more persistent stains. C o n -
ventional furniture waxes or polishes should not be used:
the oiled walnut enclosure, however, may be treated with
wax specifically formulated for such surfaces.
The walnut finish may appear to age. or dry out. as the oil
penetrates deeper and deeper into the veneer. It may, there-
fore, be desirable to re-oil the enclosure surface from time
to time. With each application, the beauty of the finish will
become more obvious, and a w a r m , rich patina will eventually
be obtained.
5
Midrange
High Frequency
Black,
Red
Black
Terminal Posts
(rear at enclosure)
Red
Red
Black
Black
K2i:
Dry Clean.
Goddard's
according to each manufac-
Interior view of the 4311.
To re-oil a J B L oiled walnut finish, use any one of the
several clear oil finishing preparations available through
furniture or hardware outlets. Apply a liberal amount of the
preparation over the entire finished surface of the enclosure.
In ten to fifteen minutes wipe off the remaining oil with a soft,
clean, dry cloth. Small surface scratches can usually be
removed by gently rubbing them out with very fine steel
wool ( 4 / 0 grade) and applying oil to the entire panel. Very
deep scratches, dents or other serious damage should be
repaired only by a qualified furniture refinisher.
Caution: Improper storage of wiping rags could result in spon-
taneous combustion. They should be thrown away or spread out
to dry in a well-ventilated area before storage or disposal.
A d d i t i o n a l I n f o r m a t i o n
J B L maintains a technical staff to answer questions pertain-
ing to professional sound reinforcement. Detailed technical
information on J B L products is available from the same
source. Inquiries may be addressed to the Applications
Engineer, Professional Division, James B. Lansing S o u n d ,
Inc., 3249 Casitas Avenue, Los Angeles, California 90039.
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