Kicker Q-Class 44QSC674
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Item# 50171 / Condition:  Brand New  On Sale  Review this product

Kicker Q-Class 44QSC674

QS Series 6-1/2" Coaxial Speaker System 4-OHM

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Save $120.00 | Reg. Price $499.95 In Stock
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QS Speakers

QS Component and Point Source speakers are more than just the best sounding drivers Kicker's ever made. They’re a technical marvel. Using Kicker's signature Tri-Tech™ cone on the separates and Kevlar-impregnated Polypropylene on the coaxials, Tetoron® dome tweeters and metallized polypropylene capacitors, QS speakers deliver the sparkling highs and hyper-accurate midrange you need to feel like you’re front row center!

QS Series Main

Crossing Over to Quality

This 18dB crossover with built-in tweeter protection is designed for easy installation and excellent sound quality. Utilizing metallized polypropylene capacitors and audiophile-grade air-core inductors, they produce unprecedented sound quality available in a mobile system. These QSC crossovers are optimized for size and bi-amplification capable.

QS Series Crossing Over to Quality

Cutting Edge Cones

Whether it’s the QS Midrange’s Tri-Tech sandwich cone design, or the Kevlar-impregnated Polypropylene of the QSC, the ultra-light, ultra-stiff materials offer the listener incredible response and heightened clarity - even with high SPL levels.

QS Series Cutting Edge Cones

All About the Details

QSS tweeters are as smooth as they are versatile. Install them with the included center post for a coaxial design, or use one of the three angle mounts to place the Teteron® domes in a completely custom location. With this kind of flexibility, all your music sounds as clean and real as the day it was recorded.

QS Series All About Details

Point Source Design

The QSC’s 25mm Teteron dome tweeter utilizes a point source design. The tweeter is placed in the center of the voice coil, along with a custom waveguide. The result is near perfect phase alignment and outstanding sonic clarity.

QS Series Point Source Design

QS Series 6.75" Coaxials

The QSC drivers includes a revolutionary 25mm Teteron® dome tweeter and custom wave guide for near perfect phase alignment for smooth frequency response. The injection-molded Polypropylene cone is impregnated with carbon-fiber for tight, accurate midrange. An NBR rubber surround provides superior damping, and complemented by KICKER’s signature blue double surround stitching.
The independent 18dB crossover has been optimized for size, and features built-in tweeter protection. Utilizing Metallized Polypropylene capacitors, high-powered resistors and audiophile-grade air-core inductors, the crossover delivers outstanding overall sound quality and easy mounting in a door or under a seat.
These QSC speakers work best with 100 watts of recommended power. See below for more details.


  • Woofer (in., mm): 6-¾, 165
  • Tweeter (in., mm): 1, 25
  • Tweeter dome material: Teteron®
  • Rated Impedance [?]: 4
  • Peak Power Handling [ Watts]: 200
  • Continuous Power Handling [Watts RMS]: 100
  • Sensitivity [1W, 1m]: 86dB
  • Frequency Response [Hz]: 40-20k
  • Woofer Mounting Hole Diameter [in, mm]: 5-9/16, 141
  • Woofer Mounting Depth [in, mm]: 2-9/16, 64.9
  • High Pass [dB], at Frequency [Hz]: 18, 5.5k
  • Low Pass [dB], at Frequency [Hz]: 18, 5.5k
  • Comments: Crossover is bi-amp capable.
These speakers also include adaptor rings, allowing the speakers to be installed using factory speaker mounting points:
Toyota Tacoma 2005-2017
Toyota Tundra 2007-2017
Ford F150 2015-2017
Ford F250/F350 2017
Chevrolet / GMC Colorado / Canyon 2015-2017
Chevrolet / GMC Silverado / Sierra 2007-2017
Dodge Ram 1500 2009-2017
Dodge Ram 2500/3500 2010-2016


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  • UPC: 713034075981
  • Weight: 12
  • Authorized Internet Dealer
*Warranty: 1 Year Manufacturer warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to for replacement within 1 year from the original date of purchase with proper return authorization.