Rockford Fosgate RFS-1408 Installation & Operation Manual page 5

Dual Laminated Foam Surrounds
The RF Punch Woofers employ a dual laminate foam surround for the
front of the woofer's suspension. Dual lamination improves reliability
by making the woofer mechanically stronger.
THE RESULT: Adds mechanical strength
Inverted Dust Cap
The use of the inverted dust cap serves to increase the cone rigidity
and improve the power handling by forcing more air through the
voice coil.
THE RESULT: Increases cone rigidity, smooths frequency response
and prevents your friends from feeling obligated to invert them for you
Aluminum Voice Coil Former
The voice coil former is black, anodized aluminum for highly efficient
thermal transfer. This allows winding high temperature copper wire
in multiple layers for improved efficiency.
THE RESULT: Improves power handling by efficiently dissipating heat
Vented Back Plate
The back plate has been vented for dependable speaker power
handling. The vent efficiently circulates cool air around the voice coil
and removes heat built up on the voice coil assembly. This ensures
that at high power levels, the speaker will efficiently dissipate any
unnecessary heat for reliable performance.
THE RESULT: Increased power handling
– 2 –