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.
The cone is constructed of molded polypropylene. Polypropylene is lightweight
and strong, giving the woofer high power handling and low distortion.
Excursion Large Roll Surround:
A large edge roll surround allows Punch woofers to produce 20% more linear
excursion than standard surrounds, resulting in more bass output.
Parabolic Triangular Cone Geometry
Support System: By bonding a polypropylene parabolic dust cap of equivalent
size to the cone body, a balanced triangular structure is created. This system
reduces piston flex and eliminates cone distortion.
Linear Spider: A compliant
linear spider improves mechanical stability under high excursion, maintaining
consistent excursion characteristics. This eliminates the need for a
Spider Support Ring: This
integrated ring increases the bonding surface area between the voice coil former
and spider, establishing a stronger joint. The result is increased mechanical
power handling under high power/high excursion situations.
Anodized Aluminum Voice Coil
Former: Aluminum voice coil formers offer superior heat dissipation over
other commonly used materials. The hard-anodized finish increases the former's
strength. These two factors combine to improve the overall power handling
characteristics of the subwoofer.
Precision Stamped CRS Basket:
Reinforced cold roll steel basket legs dampen unwanted resonance for better bass
Removable Magnet Cover: The
cosmetic magnet cover can be removed when additional mounting clearance is
required. With the magnet cover
installed, the woofer has the following dimensions:
- Magnet Diameter: 6.976"
- Depth as top: 5.258"
The heavy-duty spring posts will accept pin connectors and bare wire.
Concealing Ring: Once the
subwoofer is mounted, the concealing ring can be installed to hide the mounting
screws, giving the subwoofer a finished look. When mounted, the concealing ring
adds approximately 3/8" to the woofer's mounting height and approximately
5/8" to the frame diameter.
Recommended Sealed Box
Volume: The sealed box sizes recommended by Rockford Fosgate range from
0.5 cu/ft to 1.0 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 0.65 cu/ft, so this is the enclosure recommended by
Recommended Vented Box
Volume: The vented box sizes recommended by Rockford Fosgate range from
1.0 cu/ft to 1.5 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 1.25 cu/ft, so this is the enclosure recommended by
Crutchfield. One 3" diameter x 7.3" long port should be used with a
Reflex Bandpass Volume: Rockford Fosgate's enclosure chart lists three compatible bandpass enclosures. The highlighted bandpass enclosure has a sealed chamber volume of
0.65 cu/ft, a vented chamber volume of 0.65 cu/ft and a single 3" diameter x 11"
long port. The smallest recommended enclosure has a sealed chamber volume of
0.5 cu/ft, a vented chamber volume of 0.45 cu/ft and a single 3" diameter x 12.75"
long port. The largest recommended enclosure has a sealed chamber volume of
0.75 cu/ft, a vented chamber volume of 0.90 cu/ft and a single 3" diameter x 9.25"