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Infinity Kappa Perfect12 VQ

12" Component Subwoofer with Variable Q

6 Reviews

Item # 108PER12VQ

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Overview

Our take on the Infinity Kappa Perfect12 VQ

Infinity understands that the difference between good bass and great bass is in the details. Incorporating the latest low-frequency innovations, the Kappa Perfect12 VQ 12" subwoofer delivers unbeatable performance and system-tuning flexibility.

Infinity understands that the difference between good bass and great bass is in the details. Incorporating the latest low-frequency innovations, the Kappa Perfect12 VQ 12" subwoofer delivers unbeatable performance and system-tuning flexibility.

Resonance is a big time enemy of great bass, and Infinity's revolutionary Magnesium Metal Matrix (M3D) is the ultimate cone material — it's 20 times less resonant than aluminum! Housed in its die-cast frame, the M3D cone is an ultra-stiff piston that translates the low-frequency signal from your amplifier with frightening accuracy. The butylene rubber one-piece surround/gasket exerts tight control over cone excursion so you'll hear smooth bass even when you're really cranking it!

The Kappa Perfect VQ subwoofer offers the unique Variable Q feature, which allows you to optimize the speaker for use with a variety of enclosures — sealed, ported, or bandpass (even free-air applications). The sub is shipped with two metal polepiece inserts, which can be plugged into the motor assembly to vary the stiffness of the suspension:

  • large insert: small sealed or ported boxes, SPL competition
  • small insert: medium size sealed or ported boxes
  • no insert: very large enclosures or free-air use

This patent pending approach also allows you to change the character of your bass for different applications. Imagine — you could tune your subs for sound quality during the week, then retune for an SPL competition on the weekend! Leave it to Infinity to take bass to a whole new place.

Details:
  • Magnesium Metal Matrix (M3D) cone
  • large-roll butyl-rubber surround
  • Variable Q
  • massive cast-aluminum basket
  • 3" voice coil
  • suitable for free-air use (handles up to 200 watts in free-air mode)
  • recommended power range 75-400 watts RMS
  • peak power handling 1,600 watts
  • frequency response 23-400 Hz
  • sensitivity 89 dB
  • top mount depth 7"
  • sealed box volume 0.4-1.25 cu. ft.
  • ported box volume 1.75-3.00 cu. ft.
  • Recommended Q-Logic Box Type: 1, 2, 3
  • 3-year warranty

Priced per speaker

I got two of these about a year ago and wouldn't trade them for anything else. They hit hard and loud and can handle anything I throw at them. I would recommend these to anyone looking for great sound.

Travis, Rapid City, SD

What's in the Box:

  • One 12" woofer
  • 1 "LoQ" metal polepiece insert (large)
  • 1 "MidQ" metal polepiece insert (small)
  • 1 Self-adhesive foam gasket
  • 1 Insert tool
  • Instructions
  • Warranty card
  • One 8" x 2-1/2" Infinity sticker
Reviews

Infinity Kappa Perfect12 VQ Reviews

Average Customer Review(s):

(6 Reviews)
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Hands-on research

Product Research

Features
Enclosure Compatibility
Specifications

Features

Magnesium Metal Matrix (M3D) Woofer Cone: Magnesium Metal Matrix (M3D) is 20 times less resonant than aluminum, delivering superior stiffness and damping.

Nitrile-butylene-rubber One-piece Surround and Gasket: This material provides an optimum blend of elasticity and internal damping. The large roll offers good long-throw linearity with the proper amount of control and stability at excursion limits.

Proprietary Die-cast Frame: The frame offers ample rigidity to support the motor structure, and its vented architecture provides greater movement of air behind the cone and spider for maximum cooling.

Spider-integrated Tinsel Leads: The spider-integrated tinsel leads enhance reliability and eliminate audible tinsel lead slap.

Variable Q: The Kappa Perfect VQ subwoofer offers the unique Variable Q feature, which allows you to optimize the speaker for use with a variety of enclosures - sealed, ported, or bandpass (even free-air applications). The sub is shipped with two metal polepiece inserts, which can be plugged into the motor assembly to vary the stiffness of the suspension:

  • Large "LoQ" Insert: small sealed or ported boxes, SPL competition
  • Small "MidQ" Insert: medium size sealed or ported boxes
  • No Insert: very large enclosures or free-air use

Gold-plated 5-way Binding Posts: The gold-plated 5-way binding posts will accept pin connectors, spade connectors, banana plugs, dual banana plugs, and bare wire.

Enclosure Compatibility

Recommended Sealed Box Volume: The sealed box sizes recommended by Infinity range from 0.4 cu/ft to 1.25 cu/ft.

Recommended Ported Box Volume: The ported box sizes recommended by Infinity range from 1.75 cu/ft to 3.0 cu/ft. One 4" diameter x 14.5" long port should be used with the 1.75 cu/ft enclosure and one 4" diameter x 16" long port should be used with the 3.0 cu/ft enclosure.

Recommended Sealed Bandpass Box Volume: The bandpass box sizes recommended by Infinity range from 2.0 cu/ft to 3.2 cu/ft. The 2.0 cu/ft enclosure has a sealed chamber volume of 1.0 cu/ft and a vented chamber volume of 1.0 cu/ft. The 3.2 cu/ft enclosure has a sealed chamber volume of 2.0 cu/ft and a vented chamber volume of 1.2 cu/ft. One 4" diameter x 10.5" long port should be used with the 2.0 cu/ft enclosure and one 4" diameter x 6.8" long port should be used with the 3.2 cu/ft enclosure.

Free-air Mounting: In addition to being compatible with sealed, ported and bandpass enclosures, the woofer can be used in free-air applications. A free-air subwoofer is designed to be mounted on a baffle board, which separates two areas of the vehicle. For instance, you could mount this woofer to a board attached to the rear deck or placed in the trunk against the rear seat. The trunk acts as the enclosure housing the subwoofer.

Note: When used as a free-air subwoofer, no metal polepiece insert is required.

Specifications

Thiele/Small Parameters: The following Thiele/Small parameters change depending on which metal polepiece insert is used:

  • BL:
    • Large "LoQ" Insert: 15.55 Tesla meters
    • Small "MidQ" Insert: 12.19 Tesla meters
    • No Insert: 9.67 Tesla meters
  • Qes:
    • Large "LoQ" Insert: 0.36
    • Small "MidQ" Insert: 0.5
    • No Insert: 0.79
  • Qts:
    • Large "LoQ" Insert: 0.34
    • Small "MidQ" Insert: 0.47
    • No Insert: 0.74

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