Enclosure Features
Driver Features
Enclosure Features
H.O. Wedge Enclosure: The JL Audio H.O. (High Output) subwoofer
enclosure system is designed around JL Audio's flagship 12W7AE-3 subwoofer, delivering
very high SPL while retaining excellent sound quality. The enclosure features solid
V-groove MDF construction with internal bracing to ensure structural integrity. It
has an angled back to help save space in the cargo area. Using JL Audio's patented
chamber-coupled port design, the slot-port wraps around the inside of the enclosure
and terminates just above the woofer, coupling the port output to the woofer's direct
output. This design provides the necessary surface area and port length to maximize
the performance of the subwoofer. The enclosure's recessed mounting baffle also
provides protection for the woofer.
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 (standard 3/4" width), and bare wire up to 10
gauge.
Enclosure Dimensions:
- Width: 33-7/8"
- Height: 16-7/8"
- Depth (top of enclosure): 14-1/2"
- Depth (bottom of enclosure): 20-3/8"
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 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 subwoofers feature an ultra-long
voice coil to enhance linear excursion, power handling and control. The large surface
area of the coil offers excellent heat dissipation, while the winding height provides
the necessary motivational force to achieve the excursion of the W7AE design.
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 maintain linear 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 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 venting system enhances
heat dissipation and power handling by directing air flow onto the voice coil former,
working in conjunction with the Forced Air Cooling technology.
Progressive-Roll Spider: The large, progressive-roll spider
provides precise control and motor/voice coil alignment without limiting excursion
prematurely.
Plateau-Reinforced Spider Attachment: A derivative of JL
Audio's VRC technology, this suspension attachment relieves stress from the
spider material at high excursions for enhanced reliability.
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.
