Square is happening! The imaginative look and sensational sound of Solo-Baric L7 subwoofers is taking the low-frequency world by storm.

Just do the math — the area of a square is greater than the area of a circle. The square Solo-Baric S12L7 12" woofer has as much as 20% more cone area than similarly-sized round subs. Picture this — the Solo-Baric L7 12" speaker moves more air than its round 15" Solo-Baric predecessor.

Kicker's engineers started from scratch on the Solo-Baric L7, with patents pending on the designs for the cone, surround, and non-resonant aluminum basket. The huge magnet structure provides the support necessary to control the extreme energy created by this massive speaker. The dual voice coil design offers wiring flexibility.

The S12L7 works great in sealed or vented boxes. Whether you like your low frequencies tight and punchy, gut-busting, or heavy on the boom, this subwoofer delivers incredible bass. (Kicker's distinctive cast-aluminum grilles are available separately.) 1-year warranty.

  • copolymer cone
  • Santoprene rubber surround
  • dual 2-ohm voice coils for wiring flexibility
  • frequency response 20-100 Hz
  • power range 75-750 watts RMS (375 watts per coil)
  • peak power handling 1,500 watts
  • sensitivity 89.4 dB SPL
  • top-mount depth 6-9/16"
  • sealed box volume 0.88-2.0 cubic feet
  • ported box volume 1.75-3.25 cubic feet

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Hands-on research

What's in the box?

Download owner's manual

  • One 12" square woofer
  • Manual
  • Warranty Registration card
  • "Important: Solo-Baric L7 Break-In Notice"

Product Research

Manual Corrections


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 extremes.

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 construction.

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 enclosures).


Power Handling: The woofer has two 4 ohm voice coils, and each coil can handle up to 375 watts RMS (750 watts peak).

Recommended Sealed Box Volume: 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): 0.88 cu/ft; each coil can handle up to 375 watts RMS (750 watts peak)
  • SQ (maximum enclosure volume): 2.0 cu/ft; each coil can handle up to 375 watts RMS (750 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: 1.75 cu/ft; 2.5"x13.25" port opening; 22.5" port depth; each coil can handle up to 375 watts RMS (750 watts peak)
  • SPL: 2.5 cu/ft; 2.5"x13.25" port opening; 16.5" port depth; each coil can handle up to 375 watts RMS (750 watts peak)
  • SPL/Deep Bass: 3.25 cu/ft; 3"x13.25" port opening; 14.5" port depth; each coil can handle up to 375 watts RMS (750 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 11.146" x 11.146" square opening.

Manual Corrections

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 corrections:

  • SPL: The manual lists the sensitivity as 89.1dB. The correct sensitivity is 89.4dB.
  • Fs: The manual lists the Fs as 29.7Hz. The correct Fs is 28.4Hz.
  • Vas: The manual lists the Vas as 87.7822 liters. The correct Vas is 93.28 liters.
  • Qts: The manual lists the Qts as 0.419. The correct Qts is 0.433.

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.

Kicker Solo-Baric S12L7 Reviews

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Best Subwoofers

Written By Keng, Twin Cities, MN on Friday, November 01, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

Definitely a beast of a subwoofer. I've own a lot of subwoofers throughout my lifetime of car audio and by far, i have yet found one with such value and outstanding quality and build. I've got this x2 in a small sealed enclosure and it plays every tune, from low end bass to higher end bass with no issue whatsoever, tight bass, loose bass, country, rap, hip hop, alternatives, doesn't matter, it plays all with nothing but accuracy. I love these subs. Still have mine in mint condition and will not let them go for whatever price, thats just how much i love them! Definitely worth having!