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Helix Precision P12W

12" 4-ohm subwoofer

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  • Helix Precision P12W

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  • Helix Precision P12W

  • Helix Precision P12W

  • Helix Precision P12W

  • Helix Precision P12W

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Our take on the Helix Precision P12W

by John Pollard
HELIX

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.

High-end bass

Are you building a reference-level system in your vehicle? Helix created their Precision Series subwoofers for the mobile audiophile. Built from hand-picked components and assembled in Germany, these subs will create detailed low-end that perfectly complements a high-performance speaker system. From the tight, plucky punch of a bass guitar to the solid "thunk" of a kick drum, you'll be in sonic heaven with these subs.

Built tough

Helix was thinking a little outside the box when they designed the Precision P12W 12" subwoofer. They used Agave sisalana, an incredibly stiff natural fiber, coated in silk to create a lightweight, rigid cone that reproduces low frequencies with unerring accuracy. Combine this unorthodox cone with a seriously oversized voice coil, and you have a woofer that will handle up to 350 watts RMS without breaking a sweat. A big rubber surround takes a lot of abuse, while the die-cast aluminum basket won't add a hint of coloration to your bass. Don't be afraid to turn this sub up.

To drive this single subwoofer, we recommend a mono amplifier rated between 260 and 525 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

See more info on this item

Highlights:

  • 12" subwoofer with 4-ohm voice coil
  • silk-coated Agave sisalana woofer cone with rubber surround
  • die-cast aluminum basket
  • frequency response: not available
  • power handling: 100-350 watts RMS
  • peak power: 700 watts
  • sensitivity: 87.3 dB
  • top-mount depth: 5-9/16"
  • sealed box volume: 0.75 cu. ft.
  • ported box volume: 1.50 cu. ft.
  • warranty: 2 years
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Size 12 -inch
Impedance 4 ohms
Cone Material Agave Sisalana
Surround Material Rubber
Ideal Sealed Box Volume (cubic feet) 0.75
Ideal Ported Box Volume (cubic feet) 1.75
Port diameter (inches) 4
Port length (inches) 17
Free-Air No
Dual Voice Coil No
Sensitivity 87.3 dB at 1 watt
Frequency Response ---
RMS Power Range (Watts) 100-350
Peak Power Handling (Watts) 700
Top Mount Depth (inches) 5 9/16
Bottom Mount Depth (inches) 6 1/8
Cutout Diameter or Length (inches) 11 1/16
Vas (liters) 118.6
Fs (Hz) 21.4
Qts 0.3
Xmax (millimeters) 11
Parts Warranty 2 Years
Labor Warranty 2 Years
Product Research
What's in the box?

Download owner's manual

  • One 12" Subwoofer
  • Rubber gasket (installed)
  • Specification sheet (English/ German)

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 open the box, verify contents, 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.

Features
Enclosure Compatibility

Features

Cone Design: The woofer uses a rigid sisal fiber cone with a durable rubber surround. The mechanical advantages of sisal, rigidity and inner damping, result in faster transients and precise detail.

Cast Aluminum Basket: The die-cast aluminum basket resists flexing and resonance (ringing).

Terminals: The woofer features a pair of spring post terminals. They accept pin connectors or bare wire up to 10-gauge.

Enclosure Compatibility

Sealed Box: Although designed for a ported enclosure, the P 12W subwoofer can also be used in a sealed enclosure. The optimum internal volume is 0.75 cubic foot. Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable to all types of music.

Ported Box: The recommended ported box has an internal volume of 1.75 cubic feet with a 4" diameter x 17" long port tube, giving a tuning frequency of 34 Hz and a -3dB point of 34 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from less power.

 
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For a more in-depth review and enhanced detailed information on the Helix Precision P12W, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_975P12W/Helix-Precision-P12W.html ).