Dual 4-ohm Voice Coils: This
woofer features dual 4-ohm voice coils that offer flexibility in wiring. When
the voice coils are wired in parallel with each other, the woofer presents a
2-ohm mono load. When the voice coils are wired in series with each other, the
woofer presents a 8-ohm mono load. In addition, each coil may be connected to a
different amplifier channel and each channel will see a 4-ohm load.
The cone is constructed of Kevlar Fiber reinforced semi-pressed paper.
The combination of these materials provide increased power handling capability,
exceptional low bass response and long lasting durability.
Parabolic Cone Geometry
Support System: 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.
Excursion Tall Profile Surround:
A tall profile, high excursion Poly-ether-ester surround allows for maximum
linear travel without reducing overall piston size giving you the highest SPL
High-Temp Voice Coils:
The woofer uses a 2.5", 4-layer, high-temp, aluminum former or voice-coil with
spun-lace Nomex reinforcement collars to provide excellent heat dissipation and
SPL capabilities unlike many other plastic substitutes.
Dual Linear Spider with Vented
Spider Cavity: A compliant dual
linear spider improves mechanical stability under high excursion, maintaining
consistent excursion characteristics. This eliminates the need for a "break-in
period." The vented spider cavity helps improve the woofer's overall heat
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 Punch3
woofer uses an extended pole piece and bumped backplate design to optimize its
The "Venturi-Effect" is created by gradually
reducing the air-flow exhaust path area, which increases the air speed across
the key thermal components of the speaker's motor parts maximizing cooling
effectiveness. The benefit of the "Venturi-Effect" is the reduction of voice
coil temperatures, substantially improving thermal dissipation, and improving
Basket: The Rockford Punch3 woofer
features a sturdy die-cast aluminum frame which adds rigidity and eliminates
multiple acoustic resonances.
Cast Aluminum Motor Cover: The
woofer features a protective die-cast aluminum motor and magnet cover for
improved heat dissipation.
Assembly: The woofer
features a custom insulated/isolated compression input terminal assembly with
attached flexible, 16-gauge stitched tinsel lead wires that can withstand
extreme duty cycles, fatigue and high current. The heavy-duty 10-gauge nickel
spring posts will accept pin connectors and bare wire.
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 eight 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 top-mounting
height of the woofer to 1.0625".
Reverse Mounting: The Rockford Punch
woofer can be mounted in either direction. The aluminum decorative ring that is
supplied with the woofer provides an easy and cosmetically finished look
regardless of the mounting direction.
Recommended Sealed Box
Volume: The sealed box sizes recommended by Rockford Fosgate
range from 0.50 cu/ft to 0.75 cu/ft. Within this range, the ideal size recommended by
Rockford Fosgate is 0.6 cu/ft, so this is the enclosure recommended by
Recommended Vented Box
Volume: The vented box size recommended by Rockford Fosgate is 1.40
cu/ft, so this is the enclosure recommended by Crutchfield. One 4" diameter x
14" long port should be used with the 1.40 cu/ft enclosure.