Enclosure Features
Driver Features
Enclosure Features
Enclosure: The ProWedge sealed enclosure is optimized for the
12" W7AE subwoofer and built from 1" MDF. The enclosure (and sub) weighs
just under 82 pounds. It's finished in high-grade black carpet with a gloss-black
laminate front baffle featuring engraved JL Audio and W7AE logos. Three solid,
brushed aluminum rods protect the woofer cone.
Terminal: The enclosure features a pair of gold plated 5-way binding
posts on the left side. They will accept pin connectors, spade connectors, single
banana plugs, dual banana plugs, and bare up to 10 gauge.
Enclosure Dimensions:
- Width: 21-3/8"
- Height: 16-5/8"
- Depth (including grille): 19-1/8"
- Depth (top of enclosure): 11-1/4"
- Depth (bottom of enclosure): 16-5/8"
Driver Features
W-Cone: The JL Audio W7AE subwoofer utilizes a W-Cone design, a
unit-body cone assembly, that maximizes cone stiffness with minimal mass. The shape
also provides torsional rigidity, critical to maintaining voice coil alignment at the
suspension limits. In order to gain maximum stiffness, two lightweight mineral-filled
polypropylene skins are bonded together at the perimeter and the center of the assembly.
The lower skin's cross-section is shaped like a "W", and provides incredible
rigidity when bonded to the dished upper skin.
OverRoll Surround: OverRoll Surround technology allows JL Audio to
make full use of the entire footprint of the speaker, placing the surround further to
the outside of the frame than in a conventional woofer. This means that W7AE subwoofer
can use a large roll for all its benefits without sacrificing cone area. By maximizing
the effective piston/total footprint ratio, the W7AE subwoofer can deliver more output
for a given excursion and outside frame diameter. This means the excursion advantage
of the W7AE can be put to full use enhancing output, rather than making up for lost
piston area. This technology also provides a geometry advantage on the outside edge
of the surround roll, allowing for more linear operation. A further benefit is that
the mounting holes are inherently sealed by the surround, resulting in an improved
box seal.
Ultra-Long Voice Coil: The W7AE subwoofer features an ultra-long
voice coil to allow extreme linear excursion, phenomenal power handling and control.
The surface area of these coils is excellent for heat dissipation, while the huge
winding height provides the necessary motivational force to achieve the huge excursion
of the W7AE designs. Considering their size, the W7AE voice coils are extremely light
weight. The W7AE uses aluminum-alloy wire (instead of conventional copper) and a
specific winding method to achieve JL Audio's desired electrical properties. The
light weight of the coils helps keep the overall moving mass down at manageable
levels, which is extremely important for efficiency and sound quality reasons.
Floating Cone Attachment Method (FCAM): JL Audio's patented FCAM
technology is an innovative method of bonding the surround/cone assembly to the voice
coil/spider assembly. This assembly technique ensures proper surround geometry in the
assembled speaker for better excursion control and dynamic voice coil alignment.
Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method
of improving dynamic motor behavior. As a result of DMA optimization, W7AE motors remain
linear in motor force over a very long range of excursion, and also maintain a highly
stable fixed magnetic field in the gap over a wide power range. The result is vastly
reduced distortion, faithfully reproduced transients, and tight, clean, articulate bass.
Forced Air Cooled: The elevated frame design of the W7AE 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.
Radial Cross-Drilled Pole Piece: This innovative venting system
greatly enhances thermal dissipation and power handling by directing air flow onto
the voice coil former and works in conjunction with the Elevated Frame cooling
technology to effectively remove heat from the voice coil. This improves power
handling and reduces power compression effects, leading to more linear performance.
Progressive-Roll Spider: The large, progressive-roll spider
provides precise control and motor/voice coil alignment without limiting excursion
prematurely.
Plateau-Reinforced Spider Attachment: The lower reinforcement
collar, attached to the voice coil former of the W7AE, incorporates a plateau design
dedicated to relieving material stress and providing a solid attachment surface for
the inner edge of the spider. The plateau of the reinforcement collar provides
excellent contact area for adhesive therefore creating an incredibly strong bond
at a critical point within the driver.
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.
