The cone is constructed of high modulus, thermoformed polypropylene with a
parabolic injected molded ABS/Acrylic dustcap. Polypropylene is lightweight
and strong, giving the woofer high power handling and low distortion.
Density Poly-Foam Surround:
A high density compressed half-roll sealed poly-foam surround allows Punch woofers to produce
a more linear excursion resulting in more bass output.
Parabolic Injection Molded Dustcap:
By bonding a ABS/Acrylic parabolic dust cap of equivalent
size to the cone body, a balanced geometrical structure is created. This system
reduces piston flex and eliminates cone distortion.
Linear Spider: A compliant
linear spider made from tear and fatigue resistant poly-cotton improves mechanical stability under high excursion, maintaining
consistent excursion characteristics. This eliminates the need for a
"break-in period." The spider rests in a vented spider cavity to
reduce heat build.
High Temp Voice Coil: The woofer
uses an aluminum 2" 4-layer voice coil with a spun-laced Nomex insulating
reinforcement collar which offers superior heat dissipation over
other commonly used materials. The hard-anodized finish increases the former's
strength. These factors combine to improve the overall power handling
characteristics of the subwoofer.
Double Stacked Magnet Motor Assembly: The
stacked magnet assembly is used to create a powerful linear motor with increased
excursion capability for superior bass output.
Optimized Motor Magnetics: The Punch2
woofer uses an extended pole piece and bumped backplate design to optimize its
Venturi-Effect Cooling System: The Venturi-Effect
Cooling system gradually reduces the air-flow exhaust path area and increases
the air speed across the key thermal masses of the woofer's motor parts which
helps reduce voice coil temperatures, improves thermal dissipation and improves
overall reliability of the speaker.
Basket: The Rockford Punch2 woofer features
a sturdy 16-gauge geometrical, compound bend frame using a multi-point
high-temp/high-strength neck joint bonding technique for added stability.
The woofer features two custom insulated/isolated compression input terminal
assemblies with embedded flexible, stitched tinsel lead wires that can withstand
extreme duty cycles, fatigue and high current.
The heavy-duty 10-gauge nickel plated spring posts will accept pin connectors and bare wire.
Cast Aluminum Motor Cover: The
woofer features a protective diamond cut cast aluminum motor and magnet cover
for improved heat dissipation.
Decorative Ring: For an added decorative look the woofer comes
supplied with a PVC decorative ring that mounts over the flange of the woofer.
When using the PVC ring the woofer is first mounted into place with four screws
and then the ring is set on top the woofer, aligning the final four holes of the
woofer with ring. The other four screws are used for these holes to mount the
ring and woofer to the enclosure. The decorative ring increases the mounting
height of the woofer to 0.756".
Reverse Mounting: The Rockford Punch2
woofer can be mounted in either direction. The mounting ring that is supplied
with the woofer provides and easy and cosmetically finished look regardless of
the mounting direction.
Recommended Sealed Box
Volume: The sealed box sizes recommended by Rockford Fosgate range from
0.70 cu/ft to 1.80 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 1.02 cu/ft, so this is the enclosure recommended by
Recommended Vented Box
Volume: The vented box size
recommended by Rockford Fosgate is 1.79 cu/ft, so this is the enclosure
recommended by Crutchfield. One 4" diameter x 10" long port should be used with