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Infinity Kappa Perfect 12.1d

12" subwoofer with dual 4-ohm voice coils

Item # 108PER121D

The Infinity Kappa Perfect 12.1d dual voice coil 12" subwoofer teams up a rugged aluminum cone and high-roll...

The Infinity Kappa Perfect 12.1d dual voice coil 12" subwoofer teams up a rugged aluminum cone and high-roll...

Discontinued item

Item # 108PER121D

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About the Infinity Kappa Perfect 12.1d

The Infinity Kappa Perfect 12.1d dual voice coil 12" subwoofer teams up a rugged aluminum cone and high-roll butyl-rubber surround for massive, accurate bass all the way down to 18 Hz. The super-rigid woofer cone won't distort (even when you push it hard), but it's light and responsive for remarkably high sensitivity. That means it'll squeeze the most volume out of the power you feed it.

Got enough juice? Get an amp for your new sub The Infinity Kappa Perfect 12.1d dual voice coil 12" subwoofer teams up a rugged aluminum cone and high-roll butyl-rubber surround for massive, accurate bass all the way down to 18 Hz. The super-rigid woofer cone won't distort (even when you push it hard), but it's light and responsive for remarkably high sensitivity. That means it'll squeeze the most volume out of the power you feed it.

The rock-solid cast-aluminum basket and the pole-piece are vented, so the 4-layer voice coil stays cool when the music gets hot. Infinity subjects these subs to the most intensive testing in the industry — 100 grueling hours of performance at their full RMS rating (350 watts).

The dual 4-ohm voice coil design allows you to wire your sub for high output (2 ohms) or for multiple subwoofer configurations (8 ohms). The Perfect 12.1d bridges the gap between subs intended for SPL and those intended for sound quality, creating bass that hits hard and sounds great. Whether you're planning a competition system or just looking for powerful bass, this sub's ready for action.

Note: If you are wiring this DVC sub for lower impedance, make sure that your amp is compatible. Most car amplifiers are stable down to 2 ohms in standard mode, or 4 ohms in bridged operation.

Details:
  • 12" subwoofer with dual 4-ohm voice coils
  • aluminum cone with high-roll butyl-rubber surround
  • massive cast-aluminum basket
  • dual 4-ohm voice coils
  • suitable for free-air use (handles up to 175 watts in free-air applications)
  • power range: 75-350 watts RMS (175 watts per coil)
  • peak power handling: 1,400 watts
  • frequency response: 18-200 Hz
  • sensitivity: 96 dB
  • top mount depth: 6-1/8"
  • sealed box volume: 1.0 cu. ft.
  • ported box volume: 1.75 cu. ft.
  • Recommended Q-Logic Box Type: 1, 2, 3
  • warranty: 3 years

Priced per speaker

READ LESS

What's in the box:

  • One 12" woofer
  • 1 Self-adhesive foam gasket
  • Instructions
  • Technical Data sheet
  • Warranty card
  • "Infinity" sticker
MFR #KAPPA PERFECT12.1D

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Product Research

Features
Enclosure Compatibility
Note

Features

Dual Voice Coils: For increased system flexibility, the woofer has two 4 ohm voice coils. When the voice coils are wired in parallel with each other, the woofer presents a 2 ohm mono load. When the voice coils are wired in series with each other, the woofer presents an 8 ohm mono load. In addition, each coil may be connected to a different amplifier channel and each channel will see a 4 ohm load.

Curvilinear Aluminum Cone: The curvilinear aluminum cone is lightweight and extremely rigid for low distortion and superior bass response.

High-roll Butyl Surround: The high-roll butyl surround damps cone resonance and ensures longevity.

Cast-Aluminum Basket: The non-resonant cast aluminum basket ensures perfect alignment of the speaker's moving parts.

Flat Uniform-roll Spider: The spider design provides maximum control over cone motion at the limits of the speaker's excursion, and reduces even-order harmonic distortion compared to cupped spiders.

Vented Pole Piece: A flared, polished and vented pole piece is used to provide optimum cooling of the voice coil and minimize turbulence.

1.5" 4-layer Voice Coil and Stacked Magnets: The 1.5" 4-layer voice coil and stacked magnets provide high motor force and room for ultra-long excursion.

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: Infinity recommends a sealed enclosure with an internal volume of 1.0 cu/ft.

Recommended Ported Box Volume: Infinity recommends a ported enclosure with an internal volume of 1.75 cu/ft. One 4" diameter x 12.33" long port should be used with a 1.75 cu/ft enclosure.

Recommended Sealed Bandpass Box Volume: Infinity recommends a bandpass enclosure with an internal volume of 3.45 cu/ft. The 3.4 cu/ft enclosure should have a sealed chamber volume of 2.2 cu/ft and a ported chamber volume of 1.25 cu/ft. One 4" diameter x 10.7" long port should be used in the ported chamber.

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

Power Handling: The woofer has two 4 ohm voice coils, and each coil can handle up to 175 watts RMS (700 watts peak).

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