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Infinity Reference X REF-6402cfx

4"x6" 2-way car speakers

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  • Infinity Reference X REF-6402cfx

  • Infinity Reference X REF-6402cfx

  • Infinity Reference X REF-6402cfx

  • Infinity Reference X REF-6402cfx

  • Infinity Reference X REF-6402cfx

  • Infinity Reference X REF-6402cfx

 

Our take on the Infinity Reference X REF-6402cfx

by John Pollard
Infinity

Designed for more clarity
Do you want to hear the details you've been missing in your car's sound system? You'll enjoy exceptional clarity from Infinity's Reference X Series REF-6402cfx 4"x6" speakers. Infinity uses textile dome tweeters to give you amazing levels of detail without sounding harsh.

REF-6402cfx 4

Larger woofer for more bass
The REF-6402cfx features tough polypropylene woofers and durable hi-roll rubber surrounds that deliver strong performance. Each Plus One+ woofer sports a significantly larger cone than speakers of similar size, adding plenty of punch to the speaker's smooth and accurate highs.

Great for any power supply
You can power these speakers with up to 45 watts of RMS power — they'll work great with an external amplifier, but they're also sensitive enough to be a good match for a factory or aftermarket stereo. Plus, Infinity comes up with a safe way to get a little more power out of your system — these 3-ohm speakers combine with the speaker wire in your car so your car stereo sees actual 4-ohm impedance. Grilles are not included — factory grilles are appropriate for most installations.

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Highlights:

  • 4"x6" 2-way speakers (pair)
  • Plus One+ polypropylene woofer cone with hi-roll rubber surround
  • 1" edge-driven textile dome tweeter
  • True Four Ohm Impedance technology: speaker's 3-ohm impedance combines with speaker wire impedance for a 4-ohm load
  • compatible with virtually all factory or aftermarket car stereos
  • power range: 5-45 watts RMS (135 watts peak power)
  • frequency response: 75-21,000 Hz
  • sensitivity: 92 dB
  • top-mount depth: 1-7/8"
  • warranty: 1 year
  • Our 60-day money-back guarantee

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

Features and Specs
General
Design
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2-way
Tweeter Design
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Edge-Driven Dome
Tweeter Composition
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Textile
Woofer Composition
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Polypropylene
Woofer Surround
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Rubber
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Specifications
Sensitivity
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92 dB at 2.83 volts
Frequency Response
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75 - 21k Hz
RMS Power Range (Watts)
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5-45
Peak Power Handling (Watts)
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135
Impedance (Ohms)
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3
Top-mount Depth (Inches)
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1 7/8
Bottom-mount Depth (Inches)
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N/A
Product Research
What's in the box?

Download owner's manual

  • Two 2-way speakers
  • 2 Standard 4x6 mounting adapters (installed)
  • 8 Machine screws (attaching speakers to mounting brackets)
  • 2 Adhesive foam gaskets
  • 2 Infinity logos
  • Template on box
  • Owner's manual (English/ Danish/ German/ Spanish/ Finnish/ French/ Italian/ Dutch/ Polish/ Portuguese/ Russian/ Swedish/ Turkish/ Chinese)

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

Plus One+ Woofer Cones: Each speaker uses a cone significantly larger than other speakers of the same size. This is accomplished by using a unique basket design and hi-roll surround. The Plus One+ design offers greater bass output and increased efficiency.

Hi-roll Rubber Surrounds: The hi-roll rubber surrounds allow the woofers a greater range of movement, resulting in longer X-max and more bass output.

Textile Dome Tweeters: Each speaker uses an edge-driven textile dome tweeter for smooth, accurate highs.

True Four Ohm Impedance Technology: The speaker's 3-ohm impedance combined with the impedance of your speaker wire provides a true 4-ohm load to your connected head unit or amplifier.

Power Handling: Although Infinity rates the 6402cfx speakers at 45 watts RMS (continuous average), they also recommend amplifiers with a power rating from 5 to 50 watts RMS.

Bottom Mounting: While the standard 4x6 adapters appear to be easily removable, they are glued in place at four points around the perimeter (in addition to the four screws, which are obvious). With the adapters in place, the speakers fit many top mount standard 4x6 and metric 4x6 applications. If the adapters are removed the speakers will fit additional top mount metric 4x6 applications, as well as bottom mount metric 4x6 applications.

 
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Infinity Reference X REF-6402cfx Reviews

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Filter by rating:
5 out of 5

HUGE UPGRADE

Written By Derrick F., Arvada, CO on Monday, June 16, 2014
Crutchfield Customer Review (What's this?)
 
These speakers are a huge improvement over our stock ones. Especially since the stock ones were made out of paper. Install was super easy.
Pros:
Great sound, Ease of install, quality material.
Was this review helpful?    Yes | No
 
1 out of 5

Infinity Reference X REF-6402cfx

Written By Anonymous, Kettering, OH on Friday, April 04, 2014
Crutchfield Customer Review (What's this?)
 
The Infinity REF-6402cfx speakers recommended by a Crutchfield phone rep did not fit the back doors of my 2007 Chevy, Silverado ext, cab. I returned them for a pair of Infinity REF-6502ix which fit perfectly and sound fantastic.
1 out of 1 people found this helpful
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5 out of 5

Great Product as always

Written By Adam A, Palatka, FL on Wednesday, December 18, 2013
Crutchfield Customer Review (What's this?)
 
Just another great Infinity product!
Pros:
Clear sound quality at a low price
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4 out of 5

Nothing overly special, but decent

Written By Anonymous, Kennesaw, GA on Thursday, July 18, 2013
Crutchfield Customer Review (What's this?)
 
I was recommened these speakers from a crutchfield advisor as a good all around speaker. I'd say they're fairly good quality. The highs and mids on them are crystal clear but the bass is reletively lacking presence but it is afterall a 4x6 speaker. Doesn't sound badat all, but I think its lacking on the bass side a tad
Pros:
Awesome highs and mids, fit perfectly with no modification required
Cons:
Simply a lack of bass
1 out of 1 people found this helpful
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5 out of 5

Infinity Reference X REF-6402cfx

Written By Robert, San Antonio, TX on Wednesday, May 22, 2013
Crutchfield Customer Review (What's this?)
 
I replaced the worn out speakers in my 2003 Silverado with these speakers. The installation was pretty easy with the helpful links on the website. The speakers sound great and I couldn't be happier. I might just look into a new radio in the future to go with the new speakers.
1 out of 1 people found this helpful
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5 out of 5

great product

Written By NateT, Boise, ID on Friday, May 10, 2013
Crutchfield Customer Review (What's this?)
 
Great sound, good fit, in a small package.
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5 out of 5

Great

Written By Andycapt, Jersey cape on Thursday, May 02, 2013
Crutchfield Customer Review (What's this?)
 
Just plain great. 6030's in the front
Pros:
Always good stuff from these people
Cons:
None
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5 out of 5

Great Speakers!

Written By Shane, Huntsville, AL on Sunday, April 28, 2013
Crutchfield Customer Review (What's this?)
 
Outstanding replacement of mediocre factory speakers! These sound great even with factory stereo. I am replacing factory stereo soon and can't wait to hear the complete setup!
Pros:
Sound, ease of installation, value
1 out of 1 people found this helpful
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5 out of 5

Infinity Reference X REF-6402cfx

Written By Anonymous, Fluker, LA on Tuesday, March 05, 2013
Crutchfield Customer Review (What's this?)
 
Crisp and clear. Sounds great!!!!
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1 out of 5

Disappointed

Written By Bobsharonc, Derby ks on Monday, November 19, 2012
 
The sound of the speakers were no better than the orginal equipment. Plus where they connect to the panel they are made of a hard brittle plastic that breaks shortly after installation.
4 out of 4 people found this helpful
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2 questions already asked

I am looking at replacing the factory system in my 1992 Chevy regular cab. The factory system is all 4x6 speakers, 2 in the dash, and 1 in each pillar behind/next to the seat on each side. Would these be a good choice, and how would i go about installing the speakers in the pillars? I cant figure out how to do it. Thanks in advance Brandon A [ Brandon  Jan 02, 2014 ]
1 answer
  • For details on installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation in your vehicle. [ Jeff Staff  Jan 02, 2014 ]
I have an Alpine power pack and 2 of these. Im running them at 45wRMS but im wondering if they will be able to handle it if i switched my power pack to 2 channel and push 90wRMS to them. Do you think they can take it? [ Kevin  Dec 11, 2013 ]
1 answer
  • These speakers are only rated for 45 watts RMS. I would not recommend running much more than that to them. [ Jeff Staff  Dec 11, 2013 ]

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For a more in-depth review and enhanced detailed information on the Infinity Reference X REF-6402cfx, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_108R6402CX/Infinity-Reference-X-REF-6402cfx.html ).