Dual Voice Coils:
For increased system flexibility, the woofer has two 2 ohm voice coils. When the
voice coils are wired in parallel with each other, the woofer presents a 1 ohm
mono load. When the voice coils are wired in series with each other, the woofer
presents a 4 ohm mono load. In addition, each coil may be connected to a
different amplifier channel and each channel will see a 2 ohm load.
Square Design: By making the Solo-Baric square, Kicker
is giving you the most possible cone area (or Sd) for a given size baffle, 16%
to 20% more area than a conventional subwoofer. More cone area means the
Solo-Baric L7 moves more air, resulting in louder, deeper bass.
Cone materials: The copolymer cone has superior
internal damping, resulting in ultra-fast transient response and super-low
distortion. In addition, the cone is also very resistant to environmental
Surround: The tough, flexible
santoprene rubber surround has a long-throw, positive-roll design, which
controls extreme cone excursion and is highly tear-resistant. The surround is
stitched to the reinforced
cone edge, making separation between them virtually impossible.
Inverted Structural Dome: The Inverted Structural Dome
replaces a conventional dustcap and locks into the cone for unmatched structural
integrity and greatly reduced cone flexing/resonance.
Cast Aluminum Frame: The cast aluminum frame provides
precision alignment and dependable motor structure support.
Spider: The durable resin-impregnated poly-cotton
spider provides precise coil alignment and critical cone motion control.
Voice Coil: The multi-layer voice coil and
Kapton former create a superior
magnetic field and effectively dissipate heat.
One-Piece Extended Pole: The one-piece extended pole
creates a broad, symmetrical magnetic field for superior power handling,
precise voice coil control, and very low deep bass distortion. Venting in the
pole piece eliminates noise and distortion caused by huge amounts of airflow
created by cone excursion.
UniPlate Construction: The UniPlate construction
combines the backplate and extended pole piece into a single unit to maximize
magnetic efficiency and minimize alignment problems often caused by two-piece
Black Plating: The black plating on the UniPlate and
top plate provides maximum heat dissipation for cool operation and extended
voice coil life.
Bumped Back Plate: The deep bumped back plate lets the
voice coil reach maximum excursion without bottoming-out.
Perimeter Venting: The
perimeter venting cooling system continuously pumps hot
air away from the voice coil, replacing it with cool outside air.
Gaskets: Front and rear gaskets insure an airtight seal.
Rubber Magnet Boot: A black
rubber boot covers the outside edge of the magnet structure to improve the
cosmetics of the woofer and protect the magnet during installation.
Spring Posts: The spring posts
will accept bare wire and pin connectors.
Enclosure Compatibility: This
woofer can provide extended bass in sealed and vented enclosures (please see the
"Specifications" section for more information on the recommended
Handling: When the subwoofer is mounted in a sealed enclosure
that has a volume from 0.66 cu/ft to 1.0 cu/ft, each coil can handle up to 300
watts RMS (600 watts peak). When the woofer is mounted in a vented enclosure,
its power handling decreases depending on the size of the enclosure. In a 1.25
cu/ft vented enclosure, each coil can handle up to 250 watts RMS (500 watts
peak). In a 1.75 cu/ft vented
enclosure, each coil can handle up to 262.5 watts RMS (525 watts peak).
In a 2.25 cu/ft vented enclosure, each coil can handle up to 275 watts RMS (550
Recommended Sealed Box
Volume: The recommended sealed enclosures have the highest power
handling capability of all the recommended enclosures. When mounted in a sealed
enclosure, the woofer delivers massive amounts of high-impact bass and can be
driven with punishing levels of amplifier power.
- Compact (minimum enclosure
volume): 0.66 cu/ft; each coil can handle up to 300 watts RMS (600 watts
- SQ (maximum enclosure volume):
1.0 cu/ft; each coil can handle up to 300 watts RMS (600 watts peak)
Recommended Vented Box
Volume: The vented enclosures incorporate massive slot-loaded ports
with ultra low air velocity and hard-hitting bass. These are not your
traditional port tubes, the slot-loaded ports are integrated into the enclosure design.
- Compact: 1.25 cu/ft;
2.5"x11.25" port opening; 19.75" port depth; each
coil can handle up to 250 watts RMS (500 watts peak)
- SPL: 1.75 cu/ft;
2.75"x11.25" port opening; 17.75" port depth; each coil can
handle up to 262.5 watts RMS (525 watts peak)
- SPL/Deep Bass: 2.25 cu/ft;
3"x11.25" port opening; 18" port depth; each
coil can handle up to 275 watts RMS (550 watts peak)
Note: The power handling
specifications listed with the vented enclosure recommendations apply only
when a 25Hz, 24dB/octave subsonic filter (sold separately) is used with this
woofer; if a subsonic filter is not used, the power rating will decrease and
excessive port noise can occur.
Cutout:The woofer will not mount in a standard
enclosure with a round cutout. Instead, the woofer must be mounted in an
enclosure with a 9.415"x9.415" square opening.
Manual Corrections: The
specifications printed in the January 2001 manual are preliminary. Per Kicker,
many of the specifications have changed and the following is a list of
- SPL: The manual lists the
sensitivity as 87.3dB. The correct sensitivity is 87.2dB.
- Fs: The manual lists the Fs
as 35.1Hz. The correct Fs is 34.5Hz.
- Vas: The manual lists the
Vas as 33.9802 liters. The correct Vas is 34.99 liters.
- Qts: The manual lists the
Qts as 0.410. The correct Qts is 0.467.