1.888.955.6000
 
 
1-888-955-6000
crutchfield.com
Crutchfield

Infinity Reference X REF-6500cfx

6-3/4" component speaker system — also fit 6-1/2" openings

Watch video
Zoom
  • Infinity Reference X REF-6500cfx

    Front

  • Infinity Reference X REF-6500cfx

  • Infinity Reference X REF-6500cfx

  • Infinity Reference X REF-6500cfx

  • Infinity Reference X REF-6500cfx

    Side view of woofer

  • Infinity Reference X REF-6500cfx

    System's 6-3/4" woofers shown

  • Infinity Reference X REF-6500cfx

    Woofer

  • Infinity Reference X REF-6500cfx

    Woofer cone

  • Infinity Reference X REF-6500cfx

    Woofer with grille

 

Our take on the Infinity Reference X REF-6500cfx

by John Pollard
Infinity

Why install component speakers?

A component speaker system gives you the best possible performance from your car audio system. A system consists of separate woofers, tweeters, and crossovers, each designed to cover one specific range of frequencies. As separate components, the woofer can move freely to deliver more powerful performance, while the tweeter can be custom-mounted in a better spot up closer to your ears, revealing a whole new world of detail. Separate crossovers are far superior to the simple filters wired into full-range speakers, so the components work together for smoother, more focused sound.

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-6500cfx 6-3/4" component speaker system. The package includes two 6-3/4" woofers, two 3/4" tweeters, and two external crossovers, along with mounting hardware and grilles.

Textile tweeters

Infinity uses 3/4" textile dome tweeters that give you amazing levels of detail without sounding harsh. Mount these tweeters in the right spot in your vehicle, and you'll hear a new world of sound as instruments and vocals become more natural and clearly defined. Infinity includes hardware for surface- or flush-mounting the tweeters, plus Starfish brackets that help you install the tweeters in many factory tweeter openings.

REF-6500cfx 6-3/4

Larger woofer for more bass

The REF-6500cfx appeals to bassheads too, with tough polypropylene woofers and durable hi-roll rubber surrounds that deliver strong low-frequency 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. The included external crossovers send the appropriate frequencies to the tweeters and woofers.

Great for any power supply

You can power these speakers with up to 90 watts of RMS power — they'll work great with an external amplifier, but they're also sensitive enough to be a good match for an 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 vehicle so your car stereo sees actual 4-ohm impedance. Grilles are included along with Infinity logo badges that can be attached to your factory grilles.

Note: Infinity describes this model as a 6-1/2" speaker. Most manufacturers designate this same frame size as a 6-3/4" speaker. For simplicity's sake we list it as a 6-3/4" speaker.

Highlights:

  • component speaker system includes 2 woofers, 2 tweeters, and 2 crossovers
  • 6-3/4" Plus One+ polypropylene woofer with hi-roll rubber surround
  • adapter rings included for 6-1/2" openings
  • 3/4" edge-driven textile dome tweeter
  • Starfish™ mounting brackets for easier tweeter installation in factory locations
  • 2-way external crossover network (18 dB/octave, 3,500 Hz high- and low-pass)
  • 3-ohm impedance for extra power (compatible with virtually all factory or aftermarket car stereos)
  • tweeter adjustment circuits (0, +3 dB)
  • power range: 5-90 watts RMS (270 watts peak power)
  • frequency response: 53-21,000 Hz
  • sensitivity: 93 dB
  • woofer top-mount depth: 2-1/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee
 

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

Features and Specs
General
Speaker Size
Loading...
6 3/4
Design
Loading...
2-way
Tweeter Design
Loading...
3/4" Dome
Tweeter Composition
Loading...
Textile
Woofer Composition
Loading...
Polypropylene
Woofer Surround
Loading...
Rubber
Parts Warranty
Loading...
1 Year
Labor Warranty
Loading...
1 Year
Specifications
Sensitivity
Loading...
93 dB
Frequency Response
Loading...
53 - 21k Hz
RMS Power Range (Watts)
Loading...
5-90
Peak Power Handling (Watts)
Loading...
270
Impedance (Ohms)
Loading...
3
Top-mount Depth (Inches)
Loading...
2 1/16
Bottom-mount Depth (Inches)
Loading...
N/A
Cutout Diameter or Length (inches)
Loading...
5 1/8
Product Research
What's in the box?

Download owner's manual

  • 2 Woofers
  • 2 Tweeters (each has attached 6" speaker leads)
  • 2 Woofer grilles
  • 2 Grille frames
  • 2 Crossovers
  • 2 Plastic mounting rings (Chrysler/GM)
  • 2 Flush-mount cups
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Surface-mount cups
  • 2 Starfish tweeter mounts
  • Eight 1-3/8" Self-tapping Allen head screws
  • Eight 1" Self-tapping pan head screws
  • Eight 1/2" Self-tapping pan head screws
  • Six 5/8" Self-tapping flat head screws
  • 3mm Allen head bit
  • 2 Washers
  • 2 Nuts
  • 8 Speed clips
  • 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)

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.

Woofers
Tweeters
Crossovers
Specifications

Woofers

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

Mounting: Without an adapter, the 6500cx woofers fit standard 6-3/4" applications. Given their required cutout, they will also fit standard 3-hole 6-1/2" and 4-hole 6-1/2" applications without an adapter, but new screw holes must be drilled. Using the included adapter brackets they can be mounted in a wide variety of 6-1/2" and 6-3/4" applications, without any modification.

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 Mounting System: 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.

Mounting 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 0.90" 0.672" 0.0" 0.885" 0.41" 0.065"
Depth 0.492" (screw depth) 0.808" 0.944" 0.492" (screw depth) 0.475" 0.88"
Frame Diameter 1.488" 1.845" 2.8" 2.44" 2.625" 3.04"
Cutout Diameter N/A 1.583" N/A N/A 1.51" 3.625"

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 0.315" wide. There are four mounting holes in each crossover.

Dimensions:

  • Width: 3.935"
  • Height: 1.209"
  • Depth: 3.171"

Specifications

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 6500cx speakers at 90 watts RMS (continuous average), they also recommend amplifiers with a power rating from 5 to 200 watts RMS.

 
Review this product
Great Gear Giveaway rewards card

Submit a review and you will be entered to win a $150 gift card

Crutchfield Great Gear Giveaway Official Sweepstakes Rules

Infinity Reference X REF-6500cfx Reviews

Average Customer Review:

13 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

Infinity Reference X REF-6500cfx

Written By Melvin, Lacombe, La on Friday, January 17, 2014
Crutchfield Customer Review (What's this?)
 
These speakers sound amazing. I upgraded the stock Rockford Fosgate speakers in my Nissan Xterra, and boy what a difference. I can't wait to install an amplifier on them.
Pros:
Everything
Cons:
Wish they were cheaper!!
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Infinity Reference X REF-6500cfx

Written By Anonymous, harrisonburg va on Thursday, January 02, 2014
Crutchfield Customer Review (What's this?)
 
Nice set of speakers
Was this review helpful?    Yes | No
 
5 out of 5

Great Speakers

Written By Chris W, San Diego, CA on Monday, December 16, 2013
Crutchfield Customer Review (What's this?)
 
These speakers are great! I have a JL amp running 150 Watts RMS to a pair of these speakers and the sound is amazing. In addition these speakers come with so many mounting pieces, you really have a lot of options. If you've ever tried to put a tweeter right where you wanted it, you will know what i'm talking about. I have a '09 Tacoma and these speakers fit in the front door nicely.
Pros:
Great Sound! Many Mounting Options!
Cons:
Instructions could be clearer.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Infinity Reference X REF-6500cfx

Written By s, Bergen County, NJ on Monday, December 16, 2013
 
Put two sets of these in a 09 F150 Crew. Powering them off stock HU and they sound great. Did require speaker adapters and drilling into sail panel to install tweeters. Well worth the money. Big difference over stock speakers. With an amp I'm sure these speakers will sound even better.
Pros:
Good quality. +3db button on crossover. Small tweeter produces clean highs. Many mounting options for tweeters. Comes with small plastic logos that attach to factory speaker grills.
Cons:
No speaker wire included to attach speakers to crossover.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Superb Value

Written By Matthew, Fort Collins, CO on Monday, September 23, 2013
Crutchfield Customer Review (What's this?)
 
I recently put these speakers in my 1998 Toyota Tacoma. After breaking them in a bit I must say that they are superb, especially given the reasonable price. There is very little discernible difference from my friends $500 dollar component speakers. Trebles and Mids are brilliant, and the base is sufficient. Overall it is very balanced, but to get the umph you need to fill certain genres you may need to add a sub. I was hesitant about the smaller tweeter at first, but it does the job well. This is my first Infinity speaker, and I am very satisfied. I did put a sheet of Dynamat extreme behind the speaker, and it does make a noticeable difference. It is worth the $25 dollars to get the speaker kit.

These speakers are extremely universal! Included in the box are an astounding number of options for both custom and stock mountings. I have never seen this in a component system before, and it was a pleasant surprise. Lots of hardware was also provided.

A note of warning though- you may want to get a set of female spade connectors to connect to the tweeters. I just used a butt end clip, but had to cut off a pair of nice spade connectors.

As always, Crutchfield was a pleasant experience. This is the forth time I have ordered from them, and have yet to encounter any issues. Delivery is always prompt, free, and packaged well. I will be coming back here for all my future needs.
Pros:
Very balanced Superb sound quality Great value for the price range
Cons:
Lack of female spade clips in installation kit. Installation directions provided by Infinity are rather vague.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Component

Written By Jason, North Branch MN on Monday, August 26, 2013
Crutchfield Customer Review (What's this?)
 
Great speakers.. sound awesome!
Pros:
Easy to mount..
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Good speakers but incomplete kit

Written By Brian A, Danville, CA on Tuesday, June 25, 2013
Crutchfield Customer Review (What's this?)
 
It all ended okay, but the kit does not come with interconnect wires between crossovers and drivers. Crutchfield did not notify me of this at the time of purchase (by telephone). When I phoned and complained Crutchfield shipped me a set (specifically; female spade lugs), but this caused me a week delay in getting my car back on the road.
Cons:
Incomplete installation kit
Was this review helpful?    Yes | No
 
5 out of 5

Infinity Review

Written By AaronA, Houston,Tx on Monday, May 13, 2013
Crutchfield Customer Review (What's this?)
 
The best component speaker I have ever owned. Recommend them for every one is in the market for buying speakers.
Was this review helpful?    Yes | No
 
5 out of 5

Awesome upgrade for stock radios

Written By John, San Diego, CA on Saturday, January 12, 2013
 
Very nice set of speakers. I installed these in my 2008 Astra and they fit perfectly. The tweeters fit perfectly in place of my stock ones and the bracket that Infinity supplied for the woofers fit my stock screw holes exactly. The improvement in the clarity of the sound is what really stands out in these speakers, I listen to a full range of music types and there nothing I've thrown at these tweeters that has caused them to crackle or become flat. You can hear everyone of the different high notes. As for the woofers they are a massive improvement over my stock component woofers, they really make the most of the meager bass output of my stock HU. With that being said I had also ordered an amp to connect to these speakers and decided to return it upon hearing how much louder and fuller these speakers make my stock radio. I highly suggest you buy the 10"x10" sheets of dynamat to surround your woofers because if your doors don't rattle before you install these they sure will after.

I matched these with the Reference 4000 series 4" speakers in my rear doors (Opel decided to put the larger speakers up front?) they play very well off of each other. Overall extremely satisfied
Pros:
Huge improvement over stock speakers These will make the most out of the small amount of power that a stock HU puts out, for those of us who don't feel the need to install an amp
Cons:
Like most automotive work there was some swearing and cut fingers, but the sound improvements are worth it No extras of any of the installation hardware, not necessarily a con, just something to remember so you don't end up crazy gluing your tweeters together like this guy.
6 out of 6 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

More Than What I'd Expected!!

Written By Mike, Philly, Pa. on Saturday, December 29, 2012
Crutchfield Customer Review (What's this?)
 
I installed these bad boys in my BMW 325ci and they sound amazing. The installation was simple with the mounting brackets and Crutchfield was very helping with assisting me with any help that I needed. Buy these components you won't regret it!!!!
Pros:
Great clarity sound and looks great installed.
Cons:
Depends on your make and model you may need speaker brackets.
Was this review helpful?    Yes | No
 
4 out of 5

great speakers

Written By brian, arden nc on Thursday, December 13, 2012
Crutchfield Customer Review (What's this?)
 
i replaced my factory speakers in both the doors and behind the seat with these and they sound amazing even with my factory head unit. i put them into a 6x9 opening and they fit with just slight trimming which was because of the tweeter going into the top part of the adapter bracket they supply.
Pros:
they fit well with the supplied bracket with a small bit of trimming. they sound great with my factory head unit. the deal i got on them was great.
Cons:
i didnt care for the way the tweeter was mounted. they did offer two options and i liked how one of them was movable so you could aim the tweeter however if you were to surface mount these they wouldnt look good in my opinion. that being said i mounted them behind the door panel so it isnt seen and isnt a huge deal
Was this review helpful?    Yes | No
 
5 out of 5

Brad

Written By Brad, san diego on Tuesday, December 11, 2012
 
I put these in my 2008 suburban and powered them with a 800 wat Kenwood amp. They are by far the best sounding speakers I have had in any of my vehicles. The bass is deep and can be felt. The highs are clean and sharp. I found that I no longer have to increase the volume to hear all the details of the music. These things sound great at any volume level. They are a great value for the price.
4 out of 4 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

Great Affordable Speakers

Written By New VW Beetle '99, Harbor City, CA on Monday, August 27, 2012
Crutchfield Customer Review (What's this?)
 
These speakers sound great and were easy to install. Only basic tools and moderate handyman skills needed. My only complaint is that neither the Crutchfield nor the Infinity instructions and pictures were very clear so it took me awhile to figure out how to attach the speakers with the brackets and ensure they would not produce a vibrating sound. Also, I did not change out my factory tweeters because they did not include a wiring harness for the tweeters like they did for the 6 3/4 speakers. I do not want to add tweeters anywhere else since there is factory wiring for the tweeters but I also don't want to have to cut the wiring harness off the old tweeters since they are still good. The wiring harness they did include for the 6 3/4" speakers worked great except the smaller connector does not fit snuggly so you have to bend the contacts on the connector to give it a tight connection.
Pros:
Sounds good. Easy to install.
Cons:
No wiring harness for tweeters. Instructions/Pictures not detailed enough.
10 out of 12 people found this helpful
Was this review helpful?    Yes | No
 

Add accessories for the Infinity Reference X REF-6500cfx

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car. See all categories & accessories

Dynamat 10415 Xtreme Speaker Kit Two 10-in. x 10-in. Sheets
38 people say
Your Price: $26.99
Add to Cart
Dynamat 10435 Xtreme Door Kit With four 12" x 36" sheets — covers two doors
29 people say
Your Price: $99.99
Add to Cart
Dynamat SuperLite Tri-Pak Triple package — 3 sheets, 12 square feet (Model #10612)
12 people say
Your Price: $69.99
Add to Cart
T-Spec 16-gauge Speaker Wire Black/white jacket — priced per foot
9 people say
Your Price: $0.69
Add to Cart
T-Spec 12-gauge Speaker Wire Black/white jacket — priced per foot
17 people say
Your Price: $1.99
Add to Cart
Stinger PRO Series 16-gauge Speaker Wire Black jacket — priced per foot
37 people say
Your Price: $0.39
Add to Cart
XTC 6-1/2" Speaker Baffles Protect your speakers (3-1/4" depth)
126 people say
Your Price: $7.99
Add to Cart
Boom Mat 6-1/2" Speaker Baffles Protect your speakers
Regular and slim-line sizes (Regular: 3" depth)
44 people say
Your Price: $8.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
42 people say
Your Price: $24.99
Add to Cart
Metra Crimp Tool and Connectors Package contains crimp tool and over 150 pieces
10 people say
Your Price: $19.99
Add to Cart
S&G Wire Cutter/Stripper Tool Cuts and strips 12- to 22-gauge wire
12 people say
Your Price: $19.99
Add to Cart
Pro.Fit Hook Tool Set Installation tools — pair
8 people say
Your Price: $6.49
Add to Cart
Pro.Fit Wire Worm Installation tool helps route wiring through tight spaces
25 people say
Your Price: $12.99
Add to Cart
S&G Tool Aid 87615 Window and Door Clip Removal Tool
11 people say
Your Price: $7.99
Add to Cart
S&G Tool Aid 87650 Door Trim and Panel Removal Tool
64 people say
Your Price: $9.99
Add to Cart
Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
7 people say
Your Price: $49.99
Add to Cart
Spec Tools SQR-200a Squeeze Wrench Narrow space ratchet kit with 18 sockets
1 person says
Your Price: $49.99
Add to Cart
Bojo Trim Panel Tools Set of 6 pry tools — helps remove interior and exterior trim and door panels
1 person says
Your Price: $29.99
Add to Cart
Posi-Products™ Car Speaker Connectors 8 connectors for installing car speakers
17 people say
Your Price: $11.99
Add to Cart
DEI Heat Shrink Tubing Black 4-foot length (Assortment)
4 people say
Your Price: $24.99
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

3 Year Protection Plan
3 Year Protection Plan
Your Price: $34.99
Add to Cart

For a more in-depth review and enhanced detailed information on the Infinity Reference X REF-6500cfx, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_108R6500CX/Infinity-Reference-X-REF-6500cfx.html ).

Get live, personalized service from an expert

Crutchfield Advisor: Hi there.

Crutchfield Advisor: We're happy to answer questions or provide additional info about this item.

Advisors also available at 1-888-600-3963