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Dual 4-ohm Voice Coils: This woofer features two 4-ohm voice
coils that offer wiring flexibility. 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.
Long Stroke Design: The pole piece has been extended to provide
a more linear magnetic field for woofer operation. This lowers distortion and provides
the woofer with better low frequency response.
Double Stacked Magnet: The stacked magnet assembly is used to
create a powerful linear motor with increased excursion capability for superior
Spring Terminals: The wire terminals are spring posts. They
will accept pin connectors, single banana plugs, or bare wire up to 10 gauge.
Sealed Box: Kenwood recommends a sealed enclosure with an
optimum internal volume of 1.25 cubic feet (from 0.75 to 1.75 cubic feet is
acceptable). Sealed enclosures provide the most control over a woofer, will
handle a lot of power, and provide accurate sonic reproduction, making them
suitable to all types of music.
Ported Box: Kenwood recommends a ported enclosure with an
internal volume of 1.5 cubic foot (from 1.0 to 2.0 cubic feet is acceptable)
using a 12-3/4" x 1-1/2" x 21-1/2" slot port. Ported (or vented)
enclosures typically provide better overall efficiency than sealed so they are
suitable for use with smaller amplifiers, giving you more bass output from less
power. However, this efficiency comes at the expense of very low frequency output.