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Kicker CompVT 08CVT654

Shallow 6.5" 4-ohm subwoofer

7 Reviews

Item # 2068C65VT4

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Our take on the Kicker CompVT 08CVT654

Kicker's space-saving CompVT subwoofers combine outstanding power handling with the ability to fit in your vehicle's tight spots. These extra-shallow speakers combine extended cone excursion and a slender frame, without sacrificing sound quality or bass impact.

Kicker's space-saving CompVT subwoofers combine outstanding power handling with the ability to fit in your vehicle's tight spots. These extra-shallow speakers combine extended cone excursion and a slender frame, without sacrificing sound quality or bass impact.

Kicker's 08CVT654 6.5" sub handles up to a hefty 150 watts RMS, while requiring less than 3 inches of mounting depth. The rigid, injection-molded polypropylene cone provides excellent definition and depth, while the ribbed Santoprene™ rubber surround helps control cone movement for accurate response. Perimeter venting on the stamped-steel basket keeps the sub cool under pressure.

This super-slim sub works in free-air applications, so you can install them in car doors, rear decks, and other places too tight for normal subs. This versatile subwoofer also works in a sealed box, so you can build your own custom enclosure. A unique design lets you mount the CompVT sub directly against the back wall of an enclosure while allowing for excursion clearance. Use your imagination — this Kicker CompVT sub lets you put well-rounded bass in almost any vehicle or boat.

Priced per speaker

Product Highlights:

  • 6.5" 4-ohm subwoofer
  • injection-molded polypropylene woofer cone with ribbed Santoprene surround
  • suitable for marine use
  • works in free-air applications
  • power handling: 50-150 watts RMS (300 watts peak power)
  • frequency response: 30-350 Hz
  • sensitivity: 84.6 dB
  • top-mount depth: 2-7/8"
  • sealed box volume: 0.2-3.0 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 6.5" woofer
  • 6.5" Metal clearance plate
  • Self-adhesive clearance plate gasket
  • Cutout template (attached to carton)
  • Manual
  • 3 Kicker decals (1 large/2 small)

I would like to thank the Cruthfield Sales and Service staff for their help in making my selection and purchase of Kicker CompVT 08CVT654 and getting back the great sound that i had been missing since my woofer gave out on my JBL Audio System.

etilton, Dyer IN


Kicker CompVT 08CVT654 Reviews

Average Customer Review(s):

(7 Reviews)
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Hands-on research

Product Research

Enclosure Compatibility


Cone: The cone is a modified spoke cone design so the CVT series woofers are much more shallow than their standard CVR counterparts. The ultra high performance injection molded polypropylene cone remains rigid and minimizes cone flex, lowering harmonic distortion. Distortion in the cone is further reduced with 360° back bracing.

Surround: The optimized ribbed Santoprene surround allows extended cone excursion for additional bass output and higher SPL. The surround is stitched to the cone to add a mechanical fastener to the chemical adhesives. This prevents the cone and surround from separating in the harshest conditions.

Basket and Motor Assembly: The high-strength steel basket features a low-profile open design, and provides a solid foundation for the precision-aligned motor assembly. Perimeter venting relieves pressure under the spider, supports a linear excursion, and helps dissipate heat from the voice coil and motor structure.

Tinsel Leads: CVT subwoofers use Spiralead tinsel-lead technology, which allows the ideal amount of flex for better strength and durability. The tinsel lead wires are woven into the spider to relieve mechanical stress.

Break-in Period: Due to the complex nature of Kicker Comp VT speakers, they require a break-in period in order to produce optimum low-bass response. The high-performance suspension system makes the speaker very stiff out-of-the-box. Approximately 2 weeks of daily playing will allow the suspension to break-in and reach its optimum equilibrium. A broken-in subwoofer will exhibit stronger bass performance, smoother response, and greater low-bass extension.

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. The boot is removable if needed for tight installations.

Marine Ready: This woofer is made with a powder coated, weather resistant basket and stainless steel hardware, so it can be used in marine and mobile applications.

Enclosure Compatibility

Depth: Kicker's new CVT series is designed to minimize depth, giving you subwoofer options where standard enclosures don't fit. The vent-less, solid-pole design allows the woofer to be mounted directly against the rear wall of a sealed or vented enclosure. The spring-loaded binding posts are mounted parallel to the cone surface to minimize depth. Also the steel Clearance Adapter Plate enables you to cut out part of the back of the enclosure to create more room for the woofer magnet, subtracting the enclosure wall depth from the equation.

Recommended Sealed Box Volume:

  • Compact (minimum enclosure volume): 0.2 cu/ft; the woofer can handle up to 150 watts RMS.
  • SQ (maximum enclosure volume): 3.0 cu/ft; the woofer can handle up to 150 watts RMS

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, power handling may decrease, and the life of the woofer may be shortened.

Recommended Enclosure: Kicker recommends a sealed enclosure for the 08CVT654. A vented enclosure is not recommended. The enclosure should be filled to 50% with loose poly-fil (polyester fiberfill) stuffing. The panel dimensions for a 0.2 cubic foot compact sealed enclosure (using 1/2" thick MDF) are:

  • Front and Rear Panels: 14" x 14"
  • Top and Bottom Panels: 14" x 2"
  • Side Panels: 13" x 2"

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.


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