Addendum 1 - lewing in-ceiling features – JBL Speakers User Manual
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LeWing With JBL Speakers Technical Data Sheet
Revision C 30-Apr-08
©2008 Screen Research. All rights reserved.
ADDENDUM 1 - LeWing In-Ceiling Features
Security sensors to avoid
breaking mobile parts when
the trap door is closed
New aluminum motorized roller
with a diameter of 4” (instead of
3”) to ensure optimum fl atness
of the projection screen fabric
Aluminum motorized roller
with a diameter of 2.4” for
masking system
New patented tab-tensioning
system to ensure a smooth
projection screen surface
Two (2) arms to ensure
constant extension /
retraction of the speaker
casing (patented system)
L-C-R (Left, Center, Right)
speakers with indepen-
dent motors
Horizontal or vertical
masking system very
close to the projection
screen fabric to avoid
overshadowing
No wires visible on top of the
speaker casing (fl ush-mount
view)
Two (2) motors DC for the trap
door which reduce noise (less
than 44 dB)
Two (2) security belts to ensure
a smooth travel of the speaker
casing