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Infinity Reference X REF-4002cfx

4" 2-way speakers

16 Reviews | 1 question - 4 answers

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Item # 108R4002CX

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Overview

Our take on the Infinity Reference X REF-4002cfx

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-4002cfx 4" speakers. Infinity uses textile dome tweeters to give you amazing levels of detail without sounding harsh; each tweeter features a level control switch so you can boost the brightness to your taste.

REF-4002cfx 4Designed 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-4002cfx 4" speakers. Infinity uses textile dome tweeters to give you amazing levels of detail without sounding harsh; each tweeter features a level control switch so you can boost the brightness to your taste.

Larger woofer for more bass

The REF-4002cfx 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 35 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.

I've always been an Infinity speaker fan, the sound quality never disappoints. For the money, these can't be beat. Wish I had ordered 5", as they would have fit in a 95 Toyota Avalon door, but overall a solid investment.

Anonymous, Woodstock, IL

What's in the Box:

  • Two 2-way speakers
  • 2 Adhesive backed 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)

Product Highlights:

  • 4" 2-way speakers (pair)
  • Plus One+ Injection-Molded Polypropylene (IMPP) 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: 5-35 watts RMS (105 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
Reviews

Infinity Reference X REF-4002cfx Reviews

Average Customer Review(s):

(16 Reviews)
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Details

Hands-on research

Features and Specs

General
Speaker Size 4
Design 2-way
Tweeter Design Edge-Driven Dome
Tweeter Composition Textile
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
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 35
Peak Power Handling (Watts) 105
Impedance (Ohms) 3
Top-mount Depth (Inches) 1 7/8
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 3 11/16

Product Research

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 an increase in 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. A switch on the housing allows you to adjust the tweeter output; choose 0 dB or +3dB, useful if the speakers are mounted low in a door where high frequencies are easily absorbed.

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 4002cfx speakers at 35 watts RMS (continuous average), they also recommend amplifiers with a power rating from 5 to 50 watts RMS.

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.

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Q & A

Customer Q&A

1 question already asked

These have a mid-bass. They are meant to be full range replacement dash speakers. I found their sound too "Bright" for my application (86 town car). They are very accurate, but their highs overpowered the full-range door speakers that they're paired with in a Lincoln 6 speaker system. Also they were not a good physical fit (they were supposed to be) if they had a good seal I probably would've gotten better low frequency performance from them. For me to use these I would've had to rewire the system to allow me to fade them seprate from my front door speakers. I believe in the right application they would be awesome (my other four infinity ref speakers are great). Sadly my REF-4002cfx's are still new, back in their box. [ Gary  Aug 23, 2016 ]
Not much bass for that lil fella. [ billy  Aug 22, 2016 ]
The speaker system is made to setup with external subwoofer. [ CURTIS  Aug 22, 2016 ]
Calvin - I don't know if they contain a mid-bass, but I will say that adjusting for bass is not very strong. I like the speakers but wish they had more bass. Good luck. Marc [ DAVID M  Aug 22, 2016 ]
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