Dual Voice Coils:
For increased system flexibility, the woofer has two 4 ohm voice coils. When the
voice coils are wired in parallel the woofer presents a 2 ohm load. When the
voice coils are wired in series the woofer presents an 8 ohm load. In addition,
each coil may be connected to a different amplifier channel and each channel
will see a 4 ohm load.
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.
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.
Gold-plated Binding Posts: The
gold-plated binding posts will accept pin connectors, spade connectors, banana
plugs, and bare wire up to 10 gauge.
Note: The binding posts
are positioned too far apart to accept dual banana plugs.
Volume: Infinity recommends a sealed enclosure with an internal volume
of 1.25 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 2.0 cu/ft with one 4" diameter x 12.25" 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 2.5 cu/ft. The enclosure has a sealed chamber volume
of 1.25 cu/ft and a ported chamber volume of 1.25 cu/ft with two 4" diameter x
8" long ports. 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.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.