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Infinity Primus PR6510cs

6-1/2" component speaker system

Item # 108P6510CS

When the thrill of owning a new (or new-to-you) car wears off, there's one sure-fire way to bring the...

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When the thrill of owning a new (or new-to-you) car wears off, there's one sure-fire way to bring the...

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Item # 108P6510CS

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About the Infinity Primus PR6510cs

Competitively priced components

When the thrill of owning a new (or new-to-you) car wears off, there's one sure-fire way to bring the excitement back to your drive. Install Infinity's Primus PR6510cs 6-1/2" component speaker system and say goodbye to the uninspired vocals, muddy cymbals, and flabby bass of your factory sound. Lifelike vocals, crisp cymbals, and well-defined bass await you. What new playlists will you create to put these awesome speakers to the test? 

Competitively priced components

When the thrill of owning a new (or new-to-you) car wears off, there's one sure-fire way to bring the excitement back to your drive. Install Infinity's Primus PR6510cs 6-1/2" component speaker system and say goodbye to the uninspired vocals, muddy cymbals, and flabby bass of your factory sound. Lifelike vocals, crisp cymbals, and well-defined bass await you. What new playlists will you create to put these awesome speakers to the test? 

Edge-driven tweeter design

Infinity employs an edge-driven design in their soft dome tweeters for a smoother, more open response and minimal distortion at high volume. Prepare for a more clearly defined soundstage as the details in your music come alive. 

The included external crossovers are tuned to Infinity's exceptional standards so that you're treated to this system's best possible sound.

Famous Plus One+ technology

This Primus polypropylene woofer delivers solid, punchy bass, thanks to Infinity's proprietary Plus One+ woofer design. Infinity extends the cone right up to the edge of the basket, giving you lots of surface area — and a bigger cone means more bass when your music needs it.

Make the most of your power

Infinity's special "true 4-ohm architecture" uses a low-impedance voice coil to safely draw extra power out of your factory radio, aftermarket stereo, or an external amplifier, so you'll get a stronger clearer sound. Grilles are included.

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Product highlights:

  • component speaker system includes 2 woofers, 2 tweeters, and 2 external crossovers
  • 6-1/2" Plus One+ polypropylene woofer cone with hi-roll rubber surround
  • edge-driven, textile dome tweeter
  • 2.7-ohm impedance for extra power (compatible with virtually all factory or aftermarket car stereos)
  • handles up to 80 watts RMS (240 watts peak power)
  • frequency response: 53-20,000 Hz
  • sensitivity: 88 dB at 2.83 volts
  • woofer top-mount depth: 2-1/16"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # PR6510CS
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What's in the box:

  • 2 Woofers
  • 2 Tweeters (each has attached 6" speaker leads with male quick-slides)
  • 2 Woofer grilles
  • 2 Grille frames
  • 2 Woofer adapter brackets
  • 2 Crossovers
  • 2 Flush-mount cups
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Surface-mount cups
  • 2 Starfish tweeter mounts
  • Four 1-3/8" Screws
  • Sixteen 1-1/8" Screws
  • Six 5/8" Flat head screws
  • 2 Washers
  • 2 Nuts
  • 8 Speed clips
  • 2 Adhesive backed foam gaskets
  • Template on box
  • Installation manual

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Infinity Primus PR6510cs reviews

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Infinity Primus PR6510cs

Crutchfield customer from Rockville, IN on 6/6/2019

2005 MINI Cooper

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I used this set up without the crossovers in the door of my wife's 2005 Mini Cooper and they sound fantastic! Great highs and solid lows. I had to backyard engineer a way to mount the tweeters but it ended up being an easy swap and she loves the way it sounds.

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0 of 0 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from NH on 3/8/2019

2016 Subaru WRX

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Great sound, easy to install, and reasonably priced!

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0 of 0 found this helpful

Infinity Primus, gets er done!!

SecretSquirrel from Centralia, WA on 2/15/2019

2005 Chrysler 300

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Honestly I haven't installed them yet, but they look like they're pretty nice speakers! My wife has Infinity in her Dodge Journey, and they sound very good! If these are anything like hers, (I believe they'll be even better) they'll sound fantastic!! I really like how the crossover unit is very small, allowing it to be mounted almost anywhere!! I wish I could give this review in a couple months when I get them mounted, and powered up so I could give a better review!!

Pros: Great price Small crossover unit Higher power handling Reputable company

Cons: None so far

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0 of 3 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Wilmington, NC on 1/15/2019

2008 Pontiac Solstice

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Car-pontiac solstice. Sound much better than factory and fit perfectly

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1 of 1 found this helpful

Great speakers

R. Brian from Chesnee, SC on 1/10/2019

1998 Toyota Tacoma

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This component system sounds great and was a very nice upgrade from my OEM speakers.

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1 of 1 found this helpful

Infinity Primus PR6510cs

Earl from Pulaski, VA on 1/5/2019

1991 Chevrolet S10

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great product. sounds great

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1 of 1 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Lone Tree, CO on 12/9/2018

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These things scream awesome! I put them in our rv trailer and the make the trailer rock!

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1 of 1 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Kansas City, MO on 12/9/2018

2018 Jeep Wrangler Unlimited (JK)

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Great speaker for the price

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1 of 1 found this helpful

Another Infinity Home Run

james from Klamath Falls, OR on 11/27/2018

1998 Dodge Dakota

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Once again, Infinity shines, proving you don't have to spend a fortune to obtain quality. Matched these to a pair of Infinity Reference 6x9's and a 50Wx4 amplifier and find that a separate subwoofer isn't necessary for me..... the bottom end sounds/feels great for all except artificial bass-driven "music" like EDM, etc. Infinitys will always satisfy my craving for hypercrisp and ultraclear high frequencies, and even without an amp would be very good due to the 3O resistance. 20 years for me now, and Crutchfield is still the leader in audio retail! You will NEVER find better customer service.

Pros: Infinity-quality high frequencies, surprising low frequencies when amplified and correctly baffled. Very small tweeter will fit pretty much anywhere.

Cons: None. There never is.

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4 of 6 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Indiana on 11/6/2018

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Paired these with the factory honda headunit in a 2018 Civic Si. Tweeters sound great, but the woofers distort with very little bass. Perhaps they need more power, but was pretty disappointed and switched to rockford prime 6.5" 3 ways, half the cost and much better bass, zero distortion.

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0 of 2 found this helpful

Infinity quality set at reasonable price point.

Ronnie from Sheridan, WY on 10/30/2018

2018 Toyota Tacoma

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Replaced cheap factory speaks with Infinitys in my 2018 TRD Off-Road Tacoma non-JBL w/7"screen. Set tweets in front sail panels (used 1-1/4" holesaw just snug for them to set on and in with custom brackets I made) and woofs in doors. 100% better so far, but awaiting delivery on an Alpine U compact 45x4 amp to wake 'em up. Will install an Alpine PWE-S8 powered 120w sub to put behind back seat next weekend I get off. That is gonna be fun. ??. This system should outdo the Tacoma Limited JBL $4,000 upgrade. I love saving money.

Pros: Solid build, nice highs on tweets, crossover does well on signal separation.

Cons: Rear door tweets flush brackets are metric size, so my 1- 1/2" holesaw too small and my 1-3/4" too big. Had to really shop my small town for 1-5/8", but finally found one. Need more power to make 'em run though, Panasonic factory radio is gutless. Get an amp to push 'em while you're at it, you're gonna need it.

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1 of 2 found this helpful

Great experience

Sean from Virginia Beach, VA on 10/29/2018

2016 Ford Focus

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First off great company with super fast shipping. I live in Virginia and that is where they are based but shipping was fast even when I lived in Florida. The product came packaged very well. Now for the product itself. This a great upgrade for the factory speakers in my 2016 FOCUS ST. The clarity is really great even though I am still running the factory radio. The wiring kit that is provided will need some cutting and splicing because these are component speakers with a crossover module. The free wiring kit was assumed that these were a direct fit to the car. Was an easy fix for me but to further aid the public I think that crutchfied should look into providing a separate harness for component crossovers. None the less I am happy with my purchase.

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0 of 0 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from St Clr Shores, MI on 10/29/2018

2010 Chevrolet Colorado

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Good speaker set. Came with all the hardware I needed and more. Crutchfield accessories that came with it helped seal the deal along with the price and customer service.

Pros: Complete kit with everything.

Cons: Quality is decent, not like the infinity of old.

Crutchfield response on

1 of 1 found this helpful

Great Speakers!!!

Mark from Saint Cloud, FL on 9/15/2018

2005 Dodge Ram 1500

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Awesome upgrade to my factory speakers. Even though my truck came with the "Infinity 7 speaker system", there is an obvious difference even in the physical appearance as well as the sound. I highly recommend these speakers.

Pros: Easy install

Cons: None that I can think of

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2 of 2 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Portland, OR on 9/13/2018

2006 Jeep Liberty

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Easy install, sounds

Pros:

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Crutchfield response on

1 of 1 found this helpful

Great upgrade for great price

William from Mount Vernon, NY on 9/2/2018

2008 Chevrolet Impala

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These went in to replace factory speakers in both my 2008 and 2011 impalas. Hey, they are infinity speakers and make a huge difference over factory standards. Not their best speakers, I love the subtle stereo separation and these speakers fall just a little short. But hey, these weren't the most expensive infinities either. Overall, great sound for a great price. Recommend for those who want big upgrade for few bucks

Pros: Infinity speakers. Great sound clarity

Cons: Not as great on subtle stereo separation.

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0 of 0 found this helpful

Infinity Primus PR6510cs

Mark from Redding, CA on 8/26/2018

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Great component speaker at an awesome price. Makes the sound stage of your car so much better. Thank you Crutchfield

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0 of 0 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Kennewick, WA on 8/17/2018

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Great speaker

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Idaho Falls, ID on 8/16/2018

2015 Subaru WRX

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Awesome sound.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Infinity Primus PR6510cs

Mark from Fort Myers, FL on 7/24/2018

2015 Mazda 3

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Good fit,sturdy looking,lots of adaptors, good sound

Pros: Good fit and finish, good reputation

Cons: Replaced stock Bose with these ,not much of a difference in sound ,if any,maybe if i upgrade the amp I'd hear a difference

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0 of 1 found this helpful

Infinity Primus PR6510cs

Eric from San Antonio, TX on 7/22/2018

2009 Volkswagen Passat

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These speakers sound amazing. Amplified them with Kenwood EXcelon X301-4 and they are loud and clear as a bell. I'd recommend this setup to anyone.

Pros: Very loud and inexpensive

Cons: None

Crutchfield response on

2 of 2 found this helpful

Gets the job done

Eric from Windsor Locks, CT on 7/4/2018

2014 Honda Civic EX

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I mean they work good, better than my no good factory speakers. the only issue i came across was to mount the speakers to my door the screws were too long and they didn't provide smaller ones so i have to run to the hardware store and get a pack of smaller ones to proper install them, as for the tweeters i have yet to mess with them because I have to dremel out the existing hole more so the speakers fit good as well as i have to splice the cables because there is no harness for tweeters on Hondas I guess

Pros: -audio quality -ease of installation once I had the correct screws and hole sizes

Cons: -door speaker screws were all too big and deemed useless -Had to modify the pillar a bit to get the tweeters to fit in snug and still the screw piece to hold it down doesn't fit

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4 of 11 found this helpful

Infinity Primus PR6510cs

Harley from Kapaa, HI on 5/26/2018

2011 Honda Accord

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Sounds great...really clear

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Perfect for my needs

Guest from Houston tx on 5/23/2018

2009 Chevrolet Silverado 1500

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My factory speakers were on their last leg so I decided to go with the Primus infinity set. They're installed in a '09 Silverado (I was able to gut the existing cone and basket and use the shell as my new speaker mount) running off a kenwood head-unit powered by a JL Audio 900/5 amp. They sound great and fill in a ton of the music that was being missed with the factory set. I highly recommend these speakers if you're on a budget or if you're like me who just needed a good component set. Clarity is great even at high volume and the highs sound awesome. Huge step up from the original factory speakers. Be aware, if you're looking for hard hitting bass off these speakers you will not find it with these without distortion in high volume but, if you're using them for voice and highs to compliment your sub these are great.

Pros: Easy to install and they came with good instructions if you're the type that needs a little guidance.

Cons: None come to mind

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3 of 3 found this helpful

Need AMP / Crutchfield ROCKS!!

Scott from Findlay, IL on 3/14/2018

2017 Buick Encore

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I ordered these speakers to replace my factory speakers. All though they sound much better than my factory speakers, I am giving them a 4 because I did not really gain as much volume as I had hoped and when turned up the bass sounds like the speakers are bottoming out. Hopefully someday I can add a small amp to drive the speakers the way they were to be designed to perform which I am confident will raise this review to a 5. I am VERY happy with Crutchfield.

Pros: Price, overall sound is better than the factory speakers. Crutchfield and their staff are outstanding.

Cons: I feel like I need to eventually invest in a small amp to get the true sound out of these speakers.

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3 of 5 found this helpful

A great combo in my Chevy Trac

G. Eric from Indianapolis, IN on 1/2/2018

2017 Chevrolet Trax

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I have had a mixed history with Infinity products (their powered subs have always died on me within weeks) . However I have always liked their clarity, especially their speakers. Installed these along with a clarion 4 channel amp (similar to the alpine ktp mini amp). Clean power; highs while needing adjustment to kill the at times shrilling capabilities are excellent once you get them "just eigh." Good mids as well. There are JBL SPEAKERS in the back and they all play nicely together with my JL AUDIO powered sub. A recommended purchase.

Pros: Clarity in all types of music

Cons: Slight trouble with limited adjustment in factory radio

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1 of 3 found this helpful

Infinity Primus PR6510cs

Crutchfield customer from Lebanon, MO on 12/19/2017

2005 Pontiac G6

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***** Excellent speakers with just the right sound. Fit the vehicle perfectly I would recommend them to anyone *****

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4 of 8 found this helpful

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More details on the Infinity Primus PR6510cs

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 2-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 2.7
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 88
Frequency Response 53 - 20k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 80
Peak Power Handling (Watts) 240
Top-mount Depth (Inches) 2 1/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 1/8

Product Research

Features

Plus One Woofer Cones: The Plus One speaker cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and an increase in efficiency.

Mounting: Infinity markets these speakers as 6-1/2"; they will fit in standard 6-1/2" speaker openings (approximately 5" diameter), but they do not use the standard 6-1/2" speaker bolt pattern. In order to install them in standard 6-1/2" applications you must drill new screw holes. If new holes are drilled in the mounting surface of the car, no bracket is needed. If drilling in the car is not an option, the included brackets can be used, which have standard 6-1/2" mounting holes and the Ford non-symmetric four hole pattern. The brackets also offer several other non-standard hole patterns. When using the brackets the depth becomes 1.798" and the mounting height becomes 0.726". The speakers are easily installed in many standard 4-hole 6-3/4" applications with no modification. Enter your vehicle information to confirm fit.

Tweeter 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:
    • 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 over 1/3 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 0.860" 0.632" 0.0" 0.843" 0.366" 0.0"
Depth 0.5" (screw depth) 0.804" 1.011" 0.5" (screw depth) 0.477" 0.94"
Frame Diameter 1.483" 1.843" 3.012" 2.444" 2.316" 3.012"
Cutout Diameter N/A 1.582" N/A N/A 1.508" 2.6"

Crossovers: The crossovers' inputs and outputs are screw terminals; they will accommodate bare wire or spade connectors up to 0.315" wide. There are two mounting holes in each crossover.

Crossover Dimensions:

  • Width: 2-1/8"
  • Height: 1"
  • Depth: 2-5/16"

Impedance: The Primus Series speakers feature 2.7Ω voice coils to compensate for the high in-line resistance of small gauge factory wiring and extract every watt from the factory receiver, increasing overall system output and efficiency (relative to 4-ohm speakers). The speakers also benefit from increased power when you upgrade the wire and add aftermarket amplifiers capable of powering a lower impedance load.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
speakers in truck are no longer working [ Daniel  Jan 30, 2019 ]
A
great sale price and website details to fitment for my specific vehicle. [ T  Jan 30, 2019 ]
A
recommended by Brandon [ greg  Nov 30, 2018 ]
A
local store recommendation [ billy  Nov 20, 2018 ]
A
I like quality sound in my vehicles. A wider range of audio frequencies actually makes you feel happier while listening to your favorite tunes. [ Stephen  Sep 20, 2018 ]
A
I like Infinity products and the price was decent. [ M  Sep 18, 2018 ]
A
Suggested by the advisors [ Hamber  Sep 15, 2018 ]
A
I needed replacement speakers and the "setup" from the Brand of vehicle has made it confusing and not as simple as just ordering speakers and plugging them in so I asked an adviser who assisted me in making my decision. [ Mark  Aug 21, 2018 ]
A
Good reviews, free accessories that matter, we'll soon see! [ Mitchell  Aug 12, 2018 ]
A
These speakers fit my 2018 Honda CR-V and should provide a noticeable improvement in overall performance and bass enhancement over the factory units. Infinity is a brand I trust from past purchases. [ Thad  Jul 14, 2018 ]
A
The reviews I read gave a very detailed description of the speaker system as a whole and the RMS was in the higher range that I was looking for without spending over $100 [ PJ  Jul 13, 2018 ]
A
Component [ TERRI M  Jul 11, 2018 ]
A
Because they supposedly work with factory head unit [ MIKE  Jun 23, 2018 ]
A
It is a quality product at the right price [ Norman A. Van  Apr 27, 2018 ]
A
I wanted it [ Justin  Mar 19, 2018 ]
A
The legendary infinity sound and build quality. [ Brendan  Jan 25, 2018 ]
A
An independently owned repair shop I do business with recommended crutch field to me and had just installed Infinity speakers of sort in a Jaguar and the sound was great! [ David  Dec 30, 2017 ]
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