Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.
Cone: This high performance paper stock
is a combination of natural and regenerated cellulose fibers interlaced with a
third, longer fiber. The three natural fibers are chemically fused together with
a blend of three interactive binding agents. The extremely high fibril strength
and toughness comes from the combination of all six of these component layers.
FIBERLock is light, tough and it's proven to have superior sound quality and
incredible durability. The cone is then treated with a Thermally Cured Acrylic
Emulsion that seals the cone body for exceptional damping and even greater
rigidity, resulting in industrial strength power handling.
Foam Surround: The BART surround has a large roll to
assure maximum cone travel. By increasing cone travel, the BART surround allows
the woofer to produce more bass.
Laminated Progressive Flat Spider: The
dual laminated progressive flat spider provides a very strong suspension for the
woofer. A secondary spider is fused to the primary spider near the critical
voice coil bonding point. The combination of the two spiders, in addition to the
progressive rolls in the spiders, provides the ultimate in linear control for
high excursion capability.
Voice Coil Formers: The
voice coil formers are aluminum for highly efficient heat transfer. This allows
the use of multiple layers of high temperature copper windings for improved
efficiency, and it improves power handling by effectively dissipating heat away
from the voice coil windings.
Stamped Basket: The Punch woofers
use a durable and lightweight stamped cold rolled steel basket. To help
prevent the spider from hitting the bottom of the basket ("soft
bottoming"), the LXcursion basket features a deep step that moves the
physical boundaries of the basket further away from the spider; this allows the
cone far greater travel and, therefore more bass, without soft bottoming.
Pole Piece: The pole piece is
extended in length to lower distortion and provide better low frequency response
by operating the voice coil in a linear fashion throughout its travel in the
Bumped Back Plate: The back
plate has been bumped to allow the woofer more room for excursion without
bottoming out. Additionally, "Aerovent" cooling efficiently and
quietly circulates cool air around the voice coil using a back plate that is
vented with a radiused aerodynamic back vent. By keeping the voice coil cooler,
power handling is improved.
CONsealer Gasket: A
newly designed front gasket conceals mounting screws and provides an airtight
seal between the woofer frame and the mounting surface. A better seal increases
the amount of bass due to the elimination of air leaks.
Rubber Magnet Boot:
A black rubber boot covers the exposed edge of the magnet structure to improve
the cosmetics of the woofer and protect the magnet during installation. The
rubber boot looks great when the woofer is mounted in an enclosure with a window
that allows you to see the back of the woofer.
Recommended Sealed Box
Volume: The sealed box volume range recommended by Rockford Fosgate is
0.9 cu/ft to 1.75 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 1.25 cu/ft.
Box Volume: The ported box volume range recommended by Rockford Fosgate
is 1.5 cu/ft to 2.75 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 2.0 cu/ft. One 4" diameter x 10-3/4" long port,
tuned at 35Hz, should be used with a 2.0 cu/ft enclosure.