Woofer Cone: This lightweight and popular material is used to ensure maximum
woofer efficiency. The benefit is high output with modest amplifier power.
Large-roll Rubber Surround: The
large-roll rubber surround provides optimum cone-edge suspension and absorbs
distortion that may travel up the cone edge, ensuring clean, tight bass.
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 an 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.
Proprietary Basket: The unique
in-board motor structure reduces the overall mounting depth, without limiting
Vented Polepiece: The vented
polepiece provides additional cooling of the motor structure, thus increasing power handling.
Progressive Spider: The
subwoofer uses a progressive spider, which provides better control at excursion
limits than more commonly used linear spiders. The result is reduced distortion
at high output levels.
Volume: Infinity recommends a sealed enclosure with an internal volume
of 0.75 cu/ft. Sealed enclosures provide the most control over a woofer, will
handle more power, and provide more accurate sonic reproduction, making them
suitable to all types of music.
Volume: Infinity recommends a ported enclosure with an internal volume
of 1.75 cu/ft with one 3" diameter x 9" long port. Ported (or vented)
enclosures provide better efficiency in the 40-50Hz range, and are suitable for
use with small amplifiers, giving you more bass output from less power. However,
this efficiency comes at the expense of sound quality at low frequencies (40Hz
and below), and control.
Bandpass Box Volume: Infinity recommends a bandpass enclosure
with an internal volume of 2.0 cu/ft. The enclosure has a sealed chamber volume
of 1.0 cu/ft and a ported chamber volume of 1.0 cu/ft with one 4" diameter x
7.875" long port. Bandpass enclosures often provide the most output
available from any amplifier and subwoofer combination at the expense of sonic
accuracy. If sheer SPL is desired most, a bandpass enclosure is recommended.
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