LAS VEGAS, Nevada – At CinemaCon 2013, HARMAN’s JBL Professional is
introducing the 4181 Cinema Subwoofer System, a cost-effective movie soundtrack
reproduction loudspeaker for basic cinema applications. The 4181 is a
high-quality subwoofer system featuring an advanced technology 460-millimeter
(18-inch), low-frequency transducer mounted in a direct radiator, bass-reflex
enclosure for smooth response to the lowest audible frequencies.
“JBL
has recognized a need for cost-effective, low-frequency augmentation of digital
soundtracks in motion picture theaters and for general sound reinforcement
applications,” said Chuck
Goodsell, Senior Manager, Cinema, JBL Professional. “The 4181 addresses this
need at a very affordable price point.”
The
driver unit utilizes a vented cooling loop, which pumps air through the
magnetic gap
and directly over and around the voice coil, providing immediate
heat transfer. Through the use of computer-aided magnet optimization and
analysis techniques, JBL engineers were able to optimize magnet weight, flux
density and field saturation, resulting in a significant reduction in harmonic
distortion.
The
75-millimeter (3-inch) voice coil, using dual coils in parallel and with holes
in bobbin, offers greater thermal stability with increased power handling. All
elements of the optimized parts of the driver ensure smooth low frequency
response, lower power compression and enable the system to carry a 500 watts
continuous pink noise rating.
The
enclosure is constructed of dense stock and is extensively braced on all
panels. It is tuned to 30Hz with three large ports to minimize port compression
and to reduce distortion due to turbulent airflow.
HARMAN
(www.HARMAN.com)
designs, manufactures and markets a wide range of audio and infotainment
solutions for the automotive, consumer and professional markets — supported by
15 leading brands, including AKG®, Harman Kardon®, Infinity®, JBL®, Lexicon®
and Mark Levinson®. The Company is admired by audiophiles across multiple
generations and supports leading professional entertainers and the venues where
they perform. More than 25 million automobiles on the road today are equipped
with HARMAN audio and infotainment systems. HARMAN has a workforce of about
13,400 people across the Americas, Europe and Asia, and reported net sales of
$4.4 billion for the twelve months ending June 30, 2012.
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