Aerovent™ Pole Piece; Suspension; Voice Coil; Cone - Rockford Fosgate PWR-410 Owner's Manual

AeroVent™ Pole Piece – The AeroVent™ provides ventilation for the
voice coil for improved power handling. The AeroVent™ is aerody-
namically shaped to allow passage of large amounts of air without
constricting the air flow which can cause whistling or turbulence
noise.
Suspension – The suspension holds the cone to the basket and
suspends the voice coil in the magnetic gap. The surround, which
supports the cone, is made from a dual laminate foam which
minimizes edge deterioration. The proprietary flat spider design
maintains linear motion of the voice coil even at high listening levels.
Voice Coil – The voice coil is wound on a large diameter anodized
aluminum former for highly efficient thermal transfer. The large
gauge high temperature copper wire allows operation at high power
levels.
Cone – The cone is made of a heavy and rigid paper material which
allows for very low frequency response and resists deforming when
driven at high power levels.
L F
OW REQUENCY
The Punch Power Woofers require an enclosure to achieve optimum
results. The enclosure allows the speaker to operate at lower frequen-
cies with improved power handling. The two most commonly used
types of low frequency speaker systems are acoustic suspension and
bass reflex. The acoustic suspension enclosure, commonly referred
to as a sealed box, relies upon the changing air pressure in a tightly
sealed chamber for its operation. The bass reflex, commonly referred
to as a ported enclosure, uses a vent inserted into the box which takes
over for the speaker at a desired tuned frequency which is determined
by the internal volume of the enclosure and the size of the vent used.
The Punch Power Woofers will yield optimum performance in a
small, ported enclosure.
U T
SING
Speakers are built in different sizes to optimize their performance in
different frequency bands. Crossovers are used to route the different
frequency bands for each speaker. There are two operational types of
crossover: active and passive. An active crossover is an electronic
filter which is placed before the amplifier and separates the signal fed
to different amplifiers in the system. A passive crossover is positioned
S
P
HE UNCH
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PEAKER
P
OWER
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YSTEMS
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OOFERS