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Infinity Reference X REF-6402cfx
4"x6" 2-way car speakers
Our take on the Infinity Reference X REF-6402cfx by Crutchfield's John Pollard
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.
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.
Powering these with a KTP445A and sound awesome. Clear sound at higher volumes and even a little mid range deposition.
Isaac, Fargo, ND
What's in the Box:
- 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)
- 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
Infinity Reference X REF-6402cfx Reviews
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Features and Specs
|Tweeter Design||Edge-Driven Dome|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
|Sensitivity (1W at 1 meter)||N/A|
|Sensitivity at 2.83 volts||92|
|Frequency Response||75 - 21k Hz|
|Minimum RMS Wattage||5|
|Maximum RMS Wattage||45|
|Peak Power Handling (Watts)||135|
|Top-mount Depth (Inches)||1 7/8|
|Bottom-mount Depth (Inches)||N/A|
|Cutout Diameter or Length (inches)||0|
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.
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 verify what’s in the box, 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.
Product reviews from the Crutchfield Labs
by Robert Ferency-Viars
We listen to Alpine Type-S, Polk Audio DXi, Infinity Reference X, and Rockford Fosgate Punch car speakers in the Crutchfield Labs.
2 questions already asked
1 answer 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 ]
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 Jan 02, 2014 ] Staff
These speakers are only rated for 45 watts RMS. I would not recommend running much more than that to them. [ Jeff Dec 11, 2013 ] Staff