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JL Audio C2-350x

Evolution™ Series 3-1/2" 2-way car speakers

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Our take on the JL Audio C2-350x

by Buck Pomerantz
JL Audio

JL Audio's Evolution C2 speakers

Side view of Evolution C2 speaker JL Audio's Evolution C2 speakers bring precision sound to your vehicle. They'll reproduce subtle elements of your music like delicate woodwinds or soprano vocals, then turn on a dime to deliver the deep thrum of the bass or thunder of the drums.


Silk tweeter delivers smooth highs

Silk tweeter

The C2-350X 3-1/2" speakers feature rugged polypropylene cones that can handle plenty of power without distortion, so you get full-bodied tones. The 3/4" silk dome tweeters serve up smooth-sounding high frequencies that won't tax your ears, adding a satisfying dose of realism to your soundstage. Built-in crossovers ensure that the tweeters and woofers reproduce only the frequencies that they were designed to handle, so your tunes play smoothly across the whole musical spectrum. Grilles are not included — factory grilles are appropriate for most installations.

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Highlights:

  • 2-way 3-1/2" speakers (pair)
  • injection-molded mica-filled polypropylene woofer with polyether foam surround
  • 3/4" silk dome tweeter
  • built-in crossover network
  • 4-ohm impedance
  • power range: 10-40 watts RMS (75 watts peak power)
  • frequency response: 130-22,000 Hz
  • sensitivity: 83 dB
  • depth: 1-9/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Priced per pair

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

Features and Specs
General
Design 2-way
Tweeter Design Dome
Tweeter Composition Silk
Woofer Composition Mica-filled Polypropylene
Woofer Surround Polyether Foam
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity 86 dB at 2.83 volts
83 dB at 1 watt
Frequency Response 130 - 22k Hz
RMS Power Range (Watts) 10-40
Peak Power Handling (Watts) 75
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 9/16
Bottom-mount Depth (Inches) 1 11/16
Cutout Diameter or Length (inches) 3 3/16
Product Research
What's in the box?

Download owner's manual

  • Two 3-1/2" 2-way speakers
  • 4 Self-tapping screws (#8 x 1")
  • 4 Speed clips
  • Two crimpable female quick slides (0.205"/5.2mm)
  • Two crimpable female quick slides (0.11"/2.8mm)
  • Owner's Manual

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.

Features

Woofers: The JL Audio Evolution C2-350x coaxial speakers feature a 3-1/2 injection-molded, mica-filled polypropylene cone woofer with a polyether foam surround. The woofer features a 0.75" voice coil on a Kapton Former, a symmetrical roll spider and a Ferrite magnet. These carefully engineered cones deliver the right combination of stiffness, damping, and off-axis response. The speaker also provides good mid-bass (by 3-1/2 standards), thanks to its mechanical clearance, optimized suspension and balanced motor design.

Tweeters: Each C2-350x features a 0.75" silk dome, ferrofluid-cooled tweeter with a damping neodymium magnet. The edge-driven silk dome tweeter is smooth, detailed (on or off axis), and provides great overall performance. Silk is lightweight and great for high frequency extension and efficiency. It is also designed for durability in the extreme automotive environment.

Power Handling: JL Audio lists two power figures in the manual; 25 watts continuous power handling and recommended amp power 10-40 watts RMS. We've listed the RMS power recommendation in the specs table.

 
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JL Audio C2-350x Reviews

Average Customer Review:

11 people say:

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Filter by rating:
5 out of 5

Excellent sound easy install

Written By Phil, Jacksonville, FL on Tuesday, August 12, 2014
Crutchfield Customer Review (What's this?)
 
Sound quality is outstanding. Highs are clear and mids sound great as well.
Pros:
Speakers overpower wind noise, which is loud in my truck.
Cons:
None
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5 out of 5

JL Audio C2-350x

Written By Douglass H, California on Sunday, July 20, 2014
Crutchfield Customer Review (What's this?)
 
I installed these jl speakers after having installed the Kicker 40CS354 in my 2012 Ram 1500. The JL speakers seem to be in balance with the rest of the stock speaker system. Comparing them with the Kicker speakers I would say the Kicker speaker was a little to bright, and a little dominate to the rest of the system. Both speakers were used with the Pioneer 4000-NEX. WIth the kicker I was constantly chasing sound settings with the eq, but not with the JL. I would recommend spending the extra money and getting the JL.

Pros:
Sounds Great, In balance with the rest of the system, & not having to constantly chase sound settings.
Cons:
None
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5 out of 5

powerful little replacement

Written By Bruce, San Francisco, CA on Tuesday, June 10, 2014
Crutchfield Customer Review (What's this?)
 
Gotta say - I was shocked at the weight when I unboxed them (shocked in a good way). These tiny speakers live up to their brand in sound production. I'm very happy I put these in place in my '12 Ram 4-door.
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5 out of 5

Jl C2-350x

Written By sandy, Doylestown PA on Wednesday, January 22, 2014
Crutchfield Customer Review (What's this?)
 
I Drive a 84 ford Thunderbird turbo coupe. I run an 2013 alpine head-unit , polk mm series 5x7 in the rear deck, alpine 500 watt mono amp for my JL audio sealed W3 in the trunk. I needed to purchase a set of speakers for the front dash of my car, my car is old so the dash is flat and the speakers are set into the dash and close to the windshield do i needed speakers that would be able to play loud enough to bounce off the glass and still be able to blend with the rest of the system.These speakers definitely do that they can play loud with nothing but the head-units power and the highs are not to bright and overall the sound is great. good bass response for size, and i trust the JL build quality. speaker looks nice and i love the rubber cover on the magnets. old car so install was kind of tricky but would have been so with any speaker.
Pros:
great sound, not bright at high volume, handle volume with head-unit power. good looking speaker.
Cons:
that these speakers don't bump as hard as my JL Sub :P
2 out of 2 people found this helpful
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5 out of 5

31/2"??????

Written By Ed, Virginia Beach, VA on Saturday, July 06, 2013
Crutchfield Customer Review (What's this?)
 
I put these in the dash of my 89 W150 and they are much louder than I expected. My A/C is 2-55s (that's 2 windows down at 55 MPH if you never heard it) and my truck is not quiet, until I can get an amp for the door and behind the seat speakers, these are the speakers I hear the most for vocals and highs. When my A/C is cranking I hear them good enough and after a month or so they still sound fine. If I were the late Mr. Ebert and the speakers were a movie they would get two thumbs up!
Pros:
Fit my truck even though website said would not fit, louder and clearer than expected
Cons:
none, unless you want them to sound like 61/2"s
1 out of 1 people found this helpful
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4 out of 5

Great for what it is...

Written By Anonymous, New york on Friday, December 14, 2012
 
With proper crossover points and being smart enough to know this wont play low you will be impressed... I have the mid crossed at 215 with a 12db slope in the pillars- I cut the cap on the tweeter and am running them active on axis... A bump on everything 8k and up was needed for sparkle or shimmer.

Bottom line with a real Midbass for the price it's a win.
Pros:
Clean uncolored tonally
Cons:
Even with a high crossover point they don't get all that loud- loud enough for most but I'm a fan of 120+db sprints. Going to try to bump the the crossover for daily use.
3 out of 5 people found this helpful
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3 out of 5

not impressed

Written By josh, mobile al on Wednesday, June 27, 2012
Crutchfield Customer Review (What's this?)
 
I give it 3 stars because it is loud but not crisp and clean like every other review, which is a big reason i went with these the right blew after 3 days...i just got the infinity 3002 hope they are better
Pros:
Jl audio
Cons:
Not high grade jl audio equipment
1 out of 1 people found this helpful
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5 out of 5

Best one on the market!!

Written By Jmz, Fort worth, TX on Saturday, May 05, 2012
 
Replaced the stock 3.5" in my 2012 Tundra. The SQ is amazing compared to stock and will compliment any system. Well worth the $$.
Pros:
Crisp highs and extre,ely clear output.
Cons:
None.
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5 out of 5

Much Better Sound

Written By Chris R., Boston, MA on Thursday, March 10, 2011
Crutchfield Customer Review (What's this?)
 
Just installed these in my 2010 Mazda CX-9 GT. They installed in about 30 minutes, and the quality is much better compared to the stock six speaker stereo dash speakers with much more refined and detailed highs. I noticed after extended listening less fatigue compared to the stock set. I Highly recommend these as a quick, easy, quality, set of replacement dash speakers.
2 out of 3 people found this helpful
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5 out of 5

Amazing sound

Written By steve, Petaluma, CA on Friday, October 29, 2010
 
I put these in the dash on my 1st gen Scion XB. What a difference. Completely transformed the sound in my car. Brighter, richer, fuller sound.
3 out of 3 people found this helpful
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5 out of 5

JL C2 350

Written By Nick, Ann Arbor, MI on Tuesday, December 08, 2009
 
These are great sounding for 3 1/2" speakers. The magnet is huge compared to the stock 3 1/2"s in my 2007 Grand Cherokee. It says they don't fit in my car but I installed them anyway and the only thing is they push a little on the grill but other than that they fit fine. Overall great speakers if you are looking to replace factory ones.
5 out of 5 people found this helpful
Was this review helpful?    Yes | No
 

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For a more in-depth review and enhanced detailed information on the JL Audio C2-350x, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_136C2350X/JL-Audio-C2-350x.html ).

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Compare with other JL Audio models

  • JL Audio C2-350x
  • Improved highs
  • 4.5 out of 5: In Stock
  • The JL Audio C2-350x steps up to a 3/4" silk dome tweeter for better high-frequency reproduction.
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  • JL Audio C2-350x
  • 3-1/2" 2-way Speaker
  • 4.5 out of 5: In Stock
    • The JL Audio C2-350x offers:
      • injection-molded mica-filled polypropylene woofer with polyether foam surround
      • 3/4" silk dome tweeter
      • 10-40 watts RMS power range
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