JL Audio Portable Speaker Mobile Subwoofer User Manual

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of 16
 
1 - OverRoll™ Surround
(U.S. Patent #5,687,247 and #5,949,898)
By utilizing space wasted in conventional speakers, this
ground-breaking innovation controls the W7’s massive
excursion without sacrificing precious cone area.
2 - W-Cone™ (U.S. Patent #6,496,590)
The W-Cone™ is a unit-body cone assembly that delivers
astonishing cone stiffness with minimal mass. The shape
also provides incredible torsional rigidity, which is critical
to maintaining voice coil alignment at the suspension
limits.
3 - Floating-Cone™ Attach Method
(U.S. Patent #6,501,844)
Our newly conceived assembly technique ensures proper
surround geometry in the assembled speaker for better
excursion control and dynamic voice coil alignment.
A small detail that means a lot when you’re pumping the
cone to the excursion extremes the W7 is capable of.
4 - Plateau-Reinforced Spider Attachment
(U.S. Patent #6,118,884)
A derivative of JL Audio’s famous VRC technology, this
bulletproof suspension attachment relieves stress from
the spider material at high-excursions for enhanced
reliability.
5 - Radially Cross-Drilled Pole Piece
(U.S. Patent #6,243,479)
This innovative venting system greatly enhances
thermal dissipation and power handling by directing air
flow onto the voice coil former, working in conjunction
with technology #6.
6 - Massive Forced-Air-Cooled
Aluminum Alloy Frame (U.S. Patent #D472,891,
#6,219,431 and #6,229,902)
The elevated frame design of the W7 delivers cool air
through slots directly above the top-plate to the voice coil
of the speaker. This not only enhances power handling,
but also sound quality by minimizing dynamic parameter
shifts and power compression.
7 - Highly Linear, DMA-Optimized Motor System
DMA is JL Audio’s proprietary Dynamic Motor Analysis
system and is aimed at improving dynamic motor
behavior. As a result of DMA optimization, W7 motors
remain linear in motor force over an extreme range
of excursion and also maintain a highly stable fixed
magnetic field in the gap over a wide power range.
This leads to vastly reduced distortion and faithfully
reproduced transients... or put simply: tight, clean,
articulate bass.
8 - Huge Diameter, Progressive-Roll Spider
Arrived at after intense computer analysis and
optimization, the W7 spiders provide precise control
and motor/voice coil alignment without prematurely
limiting excursion.
9 - Co-Extruded Double Lead-Wires
The extruded casing and carefully engineered
attachments ensure controlled lead-wire behavior under
the most extreme excursion demands. Two conductors
are used per connection for ample current carrying
capability.
10 - Ultra-long Voice Coil
To allow extreme linear excursion, phenomenal power
handling and control, control, control.
W7 Technologies
In addition to the patented technologies listed above, multiple U.S. and International patents are currently pending.
WARNING: Prolonged exposure to high sound pressure levels can lead to permanent hearing loss. W7 subwoofers are
capable of reproducing sound at extremely high sound pressure levels. Please exercise restraint in the operation of your
system in order to preserve your hearing and your long-term enjoyment of this product’s sound quality capabilities.
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