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HELIX C 63C 6-1/2" 3-way component speaker system

Item # 975C63C

HELIX's flagship Competition line embodies their mindset as a speaker company — use high-quality materials...

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HELIX's flagship Competition line embodies their mindset as a speaker company — use high-quality materials...

Item # 975C63C

Shop all Match Component Speakers

About the HELIX C 63C

John Pollard

German-built quality

HELIX's flagship Competition line embodies their mindset as a speaker company — use high-quality materials combined with precise German engineering to create speakers that deliver reference-level sound. These speakers will bring out nuances in your music that you haven't heard in your car before, while providing imaging and staging comparable to a set of premium home speaker towers. HELIX built the Competition speakers for the mobile audiophile who wants the same level of sound quality in the car as he or she enjoys at home.
Helix Competition C63C

HELIX's eye for design gives you the option of putting these stylish external crossover systems on display.

German-built quality

HELIX's flagship Competition line embodies their mindset as a speaker company — use high-quality materials combined with precise German engineering to create speakers that deliver reference-level sound. These speakers will bring out nuances in your music that you haven't heard in your car before, while providing imaging and staging comparable to a set of premium home speaker towers. HELIX built the Competition speakers for the mobile audiophile who wants the same level of sound quality in the car as he or she enjoys at home.

Precision drivers

The Competition C 63C component speaker set owes its smooth, detailed highs to a 1" silk dome tweeter, while a 2" silk dome driver adds the crucial midrange details that make musical instruments sound so natural. HELIX uses Agave sisalana, an incredibly stiff natural fiber, to create a 6-1/2" woofer cone that delivers powerful, accurate low-frequency response, adding warmth and impact to your music. These components work together to create a lifelike musical soundscape that'll make you feel like you're listening to your favorite performers live.

High-quality crossover

HELIX builds the massive 3-way crossover network with the highest quality parts available, so it can guide the correct frequencies to each driver without any troubling "hot spots" or dropouts. You can adjust the tweeter level on the crossover to your preference, and you'll even find a second set of woofer outputs so you can add another set of 6 CB woofers for more kick-drum impact. This Competition speaker system will inspire your driving time with its impressive soundstage and musical performance.

Installation note: You'll need a pair of our universal backstraps to install the tweeters in the factory locations.

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Product highlights:

  • component speaker system includes two 6-1/2" woofers, two midrange speakers, two tweeters, and two external crossovers
  • Agave sisalana fiber woofer cone with elastomer structural damping
  • rubber surround
  • 2" silk dome midrange
  • 1" silk dome tweeter
  • 3-way external crossover with tweeter adjustment
  • 4-ohm impedance
  • power range: 10-190 watts RMS (380 watts peak power)
  • frequency response: 47-25,000 Hz
  • sensitivity: 91 dB
  • mounting depth: woofer: 2-11/16"; midrange: 1-3/16"
  • grilles included
  • warranty: 2 years
  • MFR # C63C

What's in the box:

  • 2 Woofers (C 6B)
  • 2 Metal grilles
  • 2 Plastic grille frames
  • 2 Flush-mount Midrange (C 2M)
  • 2 Flush-mount Tweeters (C 1T)
  • 2 Crossovers
  • 2 Metal flush-mount midrange clamps
  • 2 Metal flush-mount tweeter clamps
  • Four M4x5mm Allen head machine screws
  • 3mm Allen wrench
  • Sixteen 3/4" Self-tapping screws
  • Specifications on the box

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More details on the HELIX C 63C

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 3-way
Tweeter Design 1" Dome
Impedance (Ohms) 4
Tweeter Composition Silk
Woofer Composition Sisal
Woofer Surround Rubber
Parts Warranty 2 Years
Labor Warranty 2 Years
Specifications
Sensitivity (1W at 1 meter) 91
Sensitivity at 2.83 volts N/A
Frequency Response 47 - 25k Hz
Minimum RMS Wattage 10
Maximum RMS Wattage 190
Peak Power Handling (Watts) 380
Top-mount Depth (Inches) 2 5/8
Bottom-mount Depth (Inches) 2 13/16
Cutout Diameter or Length (inches) 5 5/8
Mounting Height (Inches) 0.335
Frame Width 6.535
Frame Length 6.535
The HELIX C 63C replaces these items:

Product Research

Woofer
Midrange
Tweeter
Crossover

Woofer

Woofer: The C 62C component system includes woofers made of sisal fiber with durable rubber surrounds. The mechanical advantages of sisal, rigidity and inner damping, result in faster transients and precise detail.

Magnet cover: The woofers are shipped with a rubber magnet cover to protect the speaker. If the cover is removed the depth changes slightly:

  • Top Mount Depth: 2.54"
  • Bottom Mount Depth: 2.71"

Terminals: Each woofer has screw terminal inputs that will accommodate bare wire or spade connectors up to 0.315" wide.

Size Classification Note: Crutchfield has traditionally referred to this woofer size as a 6-3/4", while some manufacturers, including Helix (Audiotec Fischer), call it a 6-1/2". Please refer to the Crutchfield Vehicle Selector to confirm fit in your vehicle.

Midrange

Midrange: The system uses two 2" silk dome midrange with neodymium motor structures and damped coupling (enclosure) volume. The flush mount flange is an integral part of the midrange housing and each has a seven inch input wire attached. No other speaker wire is included with the system.

Midrange Dimensions:

  Frame Diameter Cutout Diameter Mounting Height Mounting Depth
Flush Mount 3.542" 3.073" 0.675" 1.413"
Tweeter

Tweeter: The system uses 1" silk dome tweeters with neodymium motor structures and damped coupling (enclosure) volume. The flush mount flange is an integral part of the tweeter housing. Each tweeter has a seven inch input wire attached. No other wire is included with the system.

Tweeter Dimensions:

  Frame Diameter Cutout Diameter Mounting Height Mounting Depth
Flush Mount 1.97" 1.73" 0.375" 1.012"
Crossover

Crossover: The crossover inputs and outputs are screw terminals and will accommodate bare wire or spade connectors up to 0.3" wide. The midrange and tweeter output levels are adjustable using separate jumpers under the cover, +3dB, 0dB, -1.5dB or -3dB. A different jumper changes the woofers' expected impedance from 4-ohms to 2-ohms, used when an optional second pair of C 6B woofers is added (item number 975C6B, sold separately). No crossover frequency or slope information was provided by the manufacturer.

Crossover Dimensions:

  • Length: 6.505"
  • Height: 1.773"
  • Width: 7.164"

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