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Infinity REF-4002cfx Open Box Complete

4" 2-Way Reference X Series Coaxial Car Audio Speakers

Infinity
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• Item Condition: Open Box Complete
• Peak Power: 210W
• RMS Power: 70W
• 1" Edge-Driven Textile Dome Tweeter
• Mounting Depth: 1-7/8"
• Plus One Woofer Cone Technology
• True 4 Ohm Impedance
• Sensitivity: 92dB

Learn more about the ls-ref-4002cfx-obc6

We apologize

This item has been discontinued

Description


Infinity brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.



True 4 Ohm Impedance

These speakers are specially designed with true 4ohm technology. The impedance of these speakers are 3ohms, but when you pair them with thin factory wiring, the impedance will naturally rise up to a true 4ohms resulting in a maximum amount of power draw from your 4ohm rated factory receiver, aftermarket deck, or external amplifier. What it comes down to is efficiency. If you need a speaker that will get the most out of your current sound system, the Reference X series is for you.

Plus One Cone Technology

Each of the Reference X speakers features plus one woofer cone technology. This means the cone has been designed to be slightly larger than comparable speakers, giving you even more output on the same amount of power. This drastically increases the efficiency of the speaker, and also extends the frequency response even lower to give you that nice thump you’ve been looking for.

The Reference of Audio

Want an easy upgrade for your factory speakers without going over your budget? The Infinity Reference X Series is for you. Its engineered to bring your factory audio system to life, or to add clarity and depth to an aftermarket system. With innovative, patented technologies, and the kind of premium quality and construction that you would expect from the worlds top-selling premium car speaker brand, Infinity Reference X speakers will transform your listening experience into something amazing.


The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.


  • A part that is fully functional but shows no sign of use outside of installation.

General Features:

  • 4" Reference X Series 2-Way Car Speakers
  • Power Handling:
    • Peak: 210 watts per pair / 105 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Polypropylene cone material
  • Plus One woofer cone technology maximizes cone surface area
  • Butyl Rubber speaker surround
  • 1" edge-driven Textile Dome tweeter
  • Adjustable tweeter level attenuation
  • UniPivot tweeters allow you to direct the sound
  • High-temperature voice coil design
  • Ferrite magnet motor structure is vented for fast cooling
  • 3 ohm impedance works with all amps rated for 4-ohm operation
  • True 4 ohm technology incorporates speaker impedance with factory speaker wire impedance for maximum power
  • Frequency response: 75-21,000 Hz
  • Top-mount depth: 1-7/8"
  • Sensitivity: 92dB
  • Authorized Internet Dealer
  • 3-year Manufacturer's Warranty

Priced Per Pair

Specifications & Details


Speaker Specifications
Series
Reference-X Series
Priced Per
Pair
Speaker Size
4"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Size
1"
Tweeter Composition
Textile
Woofer Composition
Polypropylene
Woofer Surround
Butyl Rubber
Peak Power Handling
105 watts
RMS Power Handling
35 watts
Sensitivity
92 dB
Frequency Response
75 - 21000 Hz
Impedance (Per Voice Coil)
4 ohm
Shallow Mount Installation
Yes
Top-Mount Depth (Mounting Depth)
1-7/8"
Cutout Dimensions
3-3/4" x 3-3/4" 
General specifications
Speaker Grilles
No
Warranty and Return Policy
Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

REF-4002cfx Open Box Complete-2

Weight:

4.50lbs

Internal SKU:

ls-ref-4002cfx-obc6

Internal Product ID:

132035

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.