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Infinity Reference REF-5020cx 5-1/4" component speaker system

Item # 108R5020CX

With a new component system, you'll hear the details you've been missing in your car's sound system.

Find what Fits your vehicle

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With a new component system, you'll hear the details you've been missing in your car's sound system.

3 questions - 3 answers

Item # 108R5020CX

About the Infinity Reference REF-5020cx

Alexander H.

Invest in component sound

With a new component system, you'll hear the details you've been missing in your car's sound system. Infinity's Reference Series REF-5020cx 5-1/4" component speaker system offers exceptional clarity, thanks to edge-driven textile tweeters that bring out all the details in your music without sounding harsh.

Invest in component sound

With a new component system, you'll hear the details you've been missing in your car's sound system. Infinity's Reference Series REF-5020cx 5-1/4" component speaker system offers exceptional clarity, thanks to edge-driven textile tweeters that bring out all the details in your music without sounding harsh.

Big woofer = big sound

The tough polypropylene woofer with its durable hi-roll rubber surround delivers surprisingly 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.

Perfect for any power supply

You can power these speakers with up to 65 watts of RMS power — they'll work well with an external amplifier, but they're also a good match for a factory radio or aftermarket stereo. Plus, these 3-ohm speakers combine with the speaker wire in your vehicle so your car stereo sees actual 4-ohm impedance, so you get a little more volume out of your system.

Grilles are not included; the factory grilles should be suitable for most applications.

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Product highlights:

  • 5-1/4" component speaker system includes 2 woofers, 2 tweeters, and 2 crossovers
  • Plus One+ polypropylene woofer cone with hi-roll rubber surround
  • edge-driven, textile 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
  • handles up to 65 watts RMS (195 watts peak power)
  • frequency response: 67-21,000 Hz
  • sensitivity: 93 dB
  • woofer mounting depth: 1-15/16
  • grilles not included
  • warranty: 1 year
  • MFR # REF-5020cx

What's in the box:

  • 2 Woofers
  • 2 Tweeters (each has attached 6" speaker leads)
  • 2 Crossovers
  • 2 Tweeter flush-mount housings
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Tweeter surface-mount housings
  • 2 Starfish tweeter mounts
  • Eight 1-3/8" Screws
  • Eight 1-1/8" Screws
  • 8 Speed clips
  • Six 5/8" Flat head screws
  • 2 Washers
  • 2 Nuts
  • 2 Adhesive backed foam gaskets
  • 2 Infinity logos
  • Instruction manual
  • Template on box

Customer reviews for Infinity Reference REF-5020cx

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4.5 out of 5 stars
19 reviews

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More details on the Infinity Reference REF-5020cx

Pat M.

Features & specs

General
Speaker Size 5 1/4
Design 2-way
Tweeter Design 3/4" Edge-Driven Dome
Impedance (Ohms) 3
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 93
Frequency Response 67 - 21k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 65
Peak Power Handling (Watts) 195
Top-mount Depth (Inches) 1 15/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 4 1/2
Mounting Height (Inches) 0.289
Frame Width 5.092
Frame Length 5.092

Product Research

Woofers
Tweeters
Crossovers
Specifications

Woofers

Plus One+ Woofer Cones: Each speaker uses a larger cone 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.

Tweeters

Material: Each tweeter features a 3/4" edge-driven textile dome for smooth, accurate highs.

Mounting: The I-Mount tweeter mounting system and Starfish mounting brackets give you several different ways to mount the tweeters:

  • I-Mount: The tweeters can be surface- or flush-mounted with Infinity's innovative I-Mount system:
    • Surface Mount: Surface mounting the tweeters involves screwing the surface-mount cup to the mounting location, then inserting and locking the tweeter into the cup.
    • Flush Mount: Flush mounting is made easy through the use of the threaded flush-mount housing and plastic locking nut. Once a cutout is made, the tweeter is installed in the flush-mount adapter, then into the flush mount housing and inserted into the hole. The large plastic locking nut is threaded onto the adapter (from behind the mounting surface) to hold the complete assembly securely in place. When flush mounted, the tweeters may be angled for optimum response and imaging.
  • Starfish Mounting Brackets: The Starfish mounting brackets allow the tweeters to be installed in factory locations behind the grilles:
    • Bottom Mount: Once the Starfish bracket is trimmed, it is secured to the underside of the grille panel. The tweeter must be inserted into the bracket and locked into place before the bracket is mounted.
    • Surface Mount: Once the Starfish bracket is trimmed, it is screwed to the top of the mounting surface behind the grille panel. Then, the tweeter is inserted into the bracket and locked into place.
    • Flush Mount: There are two sets of tabs to flush mount the tweeter in the Starfish bracket, yielding different mounting dimensions. The upper tabs mount the tweeter completely below the opening and are glued in place. The lower mounting tabs are screwed in place and result in a mounting height just under a half inch. Once the bracket is mounted, the tweeter is inserted into the bracket and locked into place.

Dimensions:

  I-Mount Surface Mount I-Mount Flush Mount Starfish Bottom Mount Starfish Surface Mount Starfish Flush Mount Starfish Flush Mount (below mounting surface)
Mounting Height 0.862" 0.654" 0.0" 0.857" 0.386" 0.286"
Depth screw depth 0.820" 0.930" screw depth 0.471" 0.571"
Frame Diameter 1.478" 1.840" 3.036" 2.440" 2.330" 2.330"
Cutout Diameter N/A 1.580" N/A N/A 1.504" 1.257"
Crossovers

Selectable Tweeter Output Level: Each 2-way crossover allows you to select the tweeter output level according to system requirements and personal preference; the tweeter level can be set to +3 dB or 0 dB.

Connections: The crossover inputs and outputs are screw terminals; they will accommodate bare wire or spade connectors up to 0.31" wide. There are four mounting holes in each crossover.

Dimensions:

  • Width: 4"
  • Height: 1-1/8"
  • Depth: 3-1/4" (plus wire)
Specifications

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

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Customer Q&A

3 questions already asked

Q
I already own a pair of the infinity ref-5020cx and a pair of infinity ref-5022cfx. My question is that I just purchased a pioneer AVH-X490BS head unit and come to find out the manual says to use speakers over 50w max input power and impedance between 4 to 8 ohms and not 1 to 3 ohms impedance. Can I still use these since they have the (true 4ohm feature after being connected to the speaker wire) or do I need to return them and go with something totally different?
james  Jan 06, 2018
1 answer
A
Yeah the Infinity REF-5020cx would work fine with your Pioneer head unit. The speakers' "true 4-ohm" design allows you to extract more power from the head unit's built-in amplifier; resulting in cleaner, more filling sound quality (relative to traditional 4-ohm speakers). For more details or to discuss further, please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks! :)
david  Jan 07, 2018 (Staff)
Q
I have a 2001 Dodge Dakota Quad Cab with the Infinity System. Are these components just plug and play for my upper and front door?
jason  Apr 11, 2017
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kenneth  Apr 14, 2017 (Staff)
Q
What amp is recommended for these speakers (Infinity Ref 5020cx)?
brandon  Dec 28, 2016
1 answer
A
Thanks for your question. For information on selecting the best amp for your system I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
kenneth  Dec 28, 2016 (Staff)

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