1 - OverRoll™ Surr
ound
(U.S. Patent #5,687,247 and #5,949,898)
By utilizing space wast
ed in conventional speak
ers, this
ground-break
ing innovation contr
ols the W7’s massiv
e
excursion without sacr
ificing precious cone ar
ea.
2 - W-Cone™ (U
.S. Patent #6,496,590)
The W-Cone™ is a unit
-body cone assembly that deliv
ers
astonishing cone stiffness with minimal mass
. The shape
also provides incr
edible torsional r
igidity, which is cr
itical
to maintaining v
oice coil alignment at the suspension
limits.
3 - Floating-
Cone™ Attach Method
(U.S. Patent #6,501,844)
Our newly conceiv
ed assembly t
echnique ensur
es proper
surround geometr
y in the assembled speak
er for better
excursion contr
ol and dynamic v
oice coil alignment.
A small detail that means a lot when y
ou’re pumping the
cone to the ex
cursion extremes the
W7 is capable of
.
4 - Plateau-Reinf
orced Spider A
ttachment
(U.S. Patent #6,118,884)
A derivative of JL A
udio’s famous
VRC technology
, this
bulletproof suspension attachment r
elieves stress fr
om
the spider mat
erial at high-ex
cursions for enhanced
reliability.
5 - Radially Cr
oss-Drilled P
ole Piece
(U.S. Patent #6,243,479)
This innovativ
e venting syst
em greatly enhances
thermal dissipation and pow
er handling by dir
ecting air
flow onto the v
oice coil former
, working in conjunc
tion
with technology #6.
6 - Massive F
orced-Air-Co
oled
Aluminum A
lloy Frame (U
.S. Patent #D472,891,
#6,219,431 and #6,229,902)
The elevated frame desig
n of the W7 deliv
ers cool air
through slots dir
ectly above the t
op-plate to the v
oice coil
of the speaker
. This not only enhances pow
er handling,
but also sound qualit
y by minimizing dynamic paramet
er
shifts and pow
er compression.
7 - Highly Linear
, DMA-Optimiz
ed Motor Sy
stem
DMA is JL Audio
’s proprietary D
ynamic Motor Analysis
system and is aimed at impr
oving dynamic mot
or
behavior. As a r
esult of DMA optimization,
W7 motors
remain linear in mot
or force over an ex
treme range
of excursion and also maintain a highly stable fix
ed
magnetic field in the gap ov
er a wide pow
er range.
This leads to vastly r
educed distor
tion and faithfully
reproduced transients
... or put simply
: tight, clean,
articulate bass
.
8 - Huge Diameter
, Progressiv
e-Roll Spider
Arrived at after int
ense comput
er analysis and
optimization, the
W7 spiders pr
ovide precise contr
ol
and motor/voice coil alig
nment without pr
ematurely
limiting excursion.
9 - Co-Extruded Double L
ead-Wires
The extruded casing and car
efully engineer
ed
attachments ensur
e controlled lead-
wire behavior under
the most extr
eme excursion demands
. Two conduc
tors
are used per connec
tion for ample cur
rent carrying
capability.
10 - Ultra-long
Voice Coil
To allow extreme linear ex
cursion, phenomenal pow
er
handling and contr
ol, control, contr
ol.
W7 Technologies
In addition t
o the patent
ed technolog
ies listed abo
ve, multiple U
.S. and International pat
ents are curr
ently pending
.
WARNING:
Prolonged exposur
e to high sound pr
essure levels can lead t
o permanent hear
ing loss. W7 subw
oofers are
capable of repr
oducing sound at ex
tremely high sound pr
essure levels. P
lease exercise r
estraint in the operation of y
our
system in order t
o preserve your hear
ing and your long-t
erm enjoyment of this pr
oduct’s sound qualit
y capabilities.
3
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