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Helix Precision P8W

8" 4-ohm subwoofer

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Item# 975P8W offer details

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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.

Our take on the Helix Precision P8W

by John Pollard

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 P8W 8" 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 250 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. For best results, mount this subwoofer in a ported enclosure.

Highlights:

  • 8" 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: 100-250 watts RMS
  • peak power: 500 watts
  • sensitivity: 87.2 dB
  • top-mount depth: 4-9/16"
  • ported box volume: 0.48 cu. ft.
  • warranty: 2 years
  • Our 60-day money-back guarantee
Shop all HELIX Component Subwoofers
     

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

    Features and Specs

    Features and Specs
    Size
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    8 -inch
    Impedance
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    4 ohms
    Cone Material
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    Agave Sisalana
    Surround Material
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    Rubber
    Ideal Sealed Box Volume (cubic feet)
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    0.28
    Ideal Ported Box Volume (cubic feet)
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    0.48
    Port diameter (inches)
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    3
    Port length (inches)
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    5
    Free-Air
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    No
    Dual Voice Coil
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    No
    Sensitivity
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    87.2 dB at 1 watt
    Frequency Response
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    ---
    RMS Power Range (Watts)
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    100-250
    Peak Power Handling (Watts)
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    500
    Top Mount Depth (inches)
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    4 9/16
    Bottom Mount Depth (inches)
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    5 1/8
    Cutout Diameter or Length (inches)
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    7 7/16
    Vas (liters)
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    18.4
    Fs (Hz)
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    41.6
    Qts
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    0.26
    Xmax (millimeters)
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    6
    Parts Warranty
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    2 Years
    Labor Warranty
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    2 Years

    Product Research

    Product Research
    What's in the box?

    Download owner's manual

    • One 8" 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 P8W subwoofer can also be used in a sealed enclosure. The optimum internal volume is 0.28 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 0.48 cubic feet with a 3" diameter x 5" long port tube, giving a tuning frequency of 80 Hz and a -3dB point of 68 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.

    Bandpass Box: When using a bandpass enclosure, the sealed rear chamber should be 0.58 cubic feet and the ported front chamber should be 0.26 cubic feet with a 2-3/4" diameter x 5-2/3" long port.

     

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    4 out of 5

    HELIX?????

    Written By UFO, Chicago on Tuesday, July 17, 2012
     
    At first I thought, hmmm Helix??? This guy is trying to sell me some cheap off brand stuff. I was WRONG, from the first hit of bass the sound was deeper and tighter than my old sub-woofer and that was a good sounding speaker. This one is just better.
    Pros:
    Quality and sound.
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    None at this time.
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    Accessories

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    StreetWires 12-gauge Ultra Cable™ Speaker Wire Blue/copper jacket — priced per foot
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    StreetWires 16-gauge Super Cable™ Speaker Wire Blue jacket — priced per foot
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    Dynamat Xtreme Trunk Kit 5 sheets, 20 square feet
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    Dynamat Dynaliner One 54" x 32" sheet (1/8" thick)
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    Metra Speaker Terminal Round terminal cup with binding post connectors (for do-it-yourself box builders)
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    Metra Speaker Terminal Square terminal cup with binding post connectors (for do-it-yourself box builders)
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    Metra Speaker Terminal Round terminal cup with spring clip connectors (for do-it-yourself box builders)
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    Metra Speaker Terminal Square terminal cup with spring clip connectors (for do-it-yourself box builders)
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    Autosound 2000 Disc One Low Frequency Test CD (Disc One)
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    Autosound 2000 Disc Four Amplifier Optimizer Test CD
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    Smart people protect with SquareTrade- The best warranty at the best price

    SquareTrade Warranty
    SquareTrade Warranty 3 Year Warranty
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    In business since 1999, SquareTrade is the largest independent warranty provider in the U.S.

    100% parts and labor - no deductibles

    All mechanical and electrical failures covered, includes normal wear and tear.

    Your item's repaired or the full item price returned withing 5 days

    Runs concurrent with manufacturer's warranty

    Rated 5-stars by consumers

    For a more in-depth review and enhanced detailed information on the Helix Precision P8W, please visit the Crutchfield website product page (/S-i4AfDsrYYqm/p_975P8W/Helix-Precision-P8W.html ).

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