JL Audio C3-650

Evolution™ C3 Series 6-3/4" convertible component speaker system

Item #: 136C3650

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4 Reviews | 1 question - 3 answers

Free Installation gear for most cars

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Versatile speaker system for any space

JL Audio's Evolution C3 speaker systems allow you to choose the best configuration for great sound in your vehicle. Mount the woofers and tweeters separately, and a C3 component system will fill your car with incredibly detailed, rich, and crystal-clear music, perfectly positioned in your listening space. In vehicles with limited space, you can mount the C3 tweeter inside the woofer to create a full-range, coaxial speaker that still performs with breathtaking impact.

Convertible speaker system

Advanced material construction leads to clean musical reproduction

The C3-650 component system uses a 6-3/4" mica-filled polypropylene woofer that covers the midrange and low frequencies strongly and accurately. A specially designed frame resists unwanted resonances, keeping your music free from interference. If you mount the tweeter separately, simply install a phase plug into the woofer and the sound will disperse smoothly throughout your vehicle.

Silk tweeters and versatile crossover networks

The C3 tweeters use ferrofluid cooling to handle extreme levels of high-frequency information without overheating. Mounted separately or coaxially, these 1" silk dome tweeters broadcast crisp musical detail evenly without harshness. Separate, outboard crossovers use premium components to direct the signal flow to your woofers and tweeters. You can select from three midrange settings and four levels of tweeter presence to match the speaker system to your listening environment.

Note: JL Audio 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.

Priced per pair

Product Highlights:

  • component speaker system includes two 6-3/4" woofers, 2 tweeters, two external crossovers, and two woofer grilles
  • mica-filled polypropylene woofer with butyl rubber surround
  • glass-filled polymer frame with Elevated Frame Cooling
  • 1" silk dome tweeter
  • 2-way external crossover with adjustments for coaxial or separate tweeter placement, and 4-position tweeter level
  • tweeter mounts for separate or coaxial installations included
  • phase plug provided when tweeter mounted separately
  • power range: 25-75 watts RMS (150 watts peak)
  • frequency response: 48-25,000 Hz
  • sensitivity: 90 dB
  • depth: 2-9/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

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.

Hands-on research

What's in the box?

Download owner's manual

  • 2 Woofers
  • 2 Tweeters
  • 2 Crossovers
  • 2 Woofer grilles
  • 2 Flush mount tweeter housings
  • 2 Surface mount tweeter housings
  • 2 Coaxial mount tweeter fixtures
  • 2 Metal spring clips for tweeter fixtures
  • Two M4x30mm Pan-head machine screws
  • 2 Crimp-on 0.187" Male quick slides
  • 2 Crimp-on 0.110" Male quick slides
  • 2 Crimp-on 0.25" Female quick slides
  • 2 Crimp-on 0.187" Female quick slides
  • 4 Crimp-on 0.110" Female quick slides
  • 12 Crimp-on spade connectors
  • Four 1" Flat head self-tapping screws
  • Twelve 1-1/8" Pan head self-tapping screws
  • 8 Speed clips
  • Owner's manual
  • Woofer cutout template

Product Research

Features

Woofers: The JL Audio Evolution C3-650 convertible component system includes 6-3/4" woofers with injection-molded polymer frames, mineral filled polypropylene cones, rubber surrounds, ferrite magnets, and 1" voice coils with Kapton formers. In the center of each cone is a phase plug; the phase plug can be removed and the tweeter mounted in its place to create a coaxial speaker.

Tweeters: The 1" silk dome tweeters are Ferro fluid cooled and use neodymium magnets. Silk is lightweight and great for high frequency extension and efficiency. It is also designed for durability in the extreme automotive environment. Flush mount and surface mount housings are included, along with fixtures to coaxially mount the tweeters to the woofers.

Tweeter Dimensions:

  Frame Diameter Cutout Diameter Mounting Height Mounting Depth
Flush Mount 2.134" 1.875" 0.25" 0.853"
Surface Mount 1.926" Screw holes only 0.981" Screw depth only

Coaxial Mounting: The tweeters can be mounted in the center of the woofers to create coaxial speakers. When the tweeters are mounted to the woofers the speaker is taller; the mounting height increases to 0.775", 0.575" for the tweeter protrusion.

Two-way Crossover System: The C3 component system utilizes a 2-way crossover system with Mylar capacitors and air-core inductors:

  • High Pass: second order (12 dB/octave slope); four tweeter level settings are selectable to compensate for mounting location or orientation; +2.0 dB, Reference, -2 dB, and -4 dB
  • Low Pass: first order (6 dB/octave slope)
  • Midrange Presence: there are three settings that affect the amplitude of the upper midrange response, designed to compensate for mounting location or orientation; choose High, Reference, or Low

Tweeter Protection: The crossover network has an electronic tweeter protection circuit built in; it monitors the current and disconnects the tweeter when it senses and overload. The circuit automatically resets once the overload is removed.

Crossover Wiring: The terminal strip will accept bare wire or spade connectors up to 0.32" wide (the included crimp-on spade connectors are 0.255" wide).

Crossover Dimensions:

  • Width: 3.368"
  • Height: 1.415"
  • Depth: 4.739" (plus wire)

Connection Note: The C3 component system comes with no speaker wire. Instead, a number of spade connectors and quick slides are included in the hardware pack to be crimped onto speaker wire you provide.

Size Classification Note: Crutchfield has traditionally referred to this size speaker as a 6-3/4", while some manufacturers, including JL Audio, call it a 6-1/2". Please refer to the Crutchfield Vehicle Selector to confirm fit in your vehicle.

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.

JL Audio C3-650 Reviews

Average Customer Review:

4 reviews
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the terminal on this speaker are cheap

Written By jay, Sidney, OH on Sunday, November 16, 2014

the speakers sound fantastic but the speaker terminals where you attach the speaker wire are cheap and flimsy.

Pros: Sound

Cons: Cost and terminals are cheap

Boys and girls get ready to rock, or what ever you listen too.

Written By Chas621, Roscoe, IL on Wednesday, June 12, 2013

Crutchfield Customer Review (What's this?)

Been there done that with audio electronics, my son blew the cheaper speakers, I had, won't name them. I have a 2005 GMC Extended cab truck, it had the bose system before I replaced the cheap factory crap. So here's the scoop, these JL Audio C3-650 are not the most expensive or best on the market but these bad boys hold there own. I've been researching replacement speakers for over a month, from Hertz to tin buck two. Like I said been there done that for a long time, since 1983. Now I'm grown up not really, but an electronic engineer. But I love LOUD HARD and CLEAR ROCK N ROLL. I travel the world so you get the picture. What these speakers bring to the table is clear loud music no matter what your kind of music is. I also have two 12's subs keeping the bass. the cross overs are awesome and wont blow, when it gets to hot it cuts off the speaker, and goes into time out and doesn't burn up. I could say a lot more stuff to wow you, but I'll let the speakers do that. I very much recommend these speakers to anybody who cant afford the higher end, by the way I liked them so much I bought another pair, now I'm, really rocking. Just make sure your amp has a HPF filter they are not made for bass. the bass freq will blow them if you go above the recommended spec. My next step will be two 10w6v3d4'S TO really ROCK. By the way Crutchfield goes out of there way to accommodate any and all questions, no question is to dumb for them, the only stupid question is the one not asked.

Pros: The Whole system

Cons: not a thing

C3-C650

Written By Eddie, Knoxville, IA on Tuesday, April 09, 2013

Crutchfield Customer Review (What's this?)

Just hooked these up with a Alpine HU and a Fosgate amp and they sound amazing... they have a clean smooth, rich, bassy sound to them, just enough highs to sound great! I have C3-600's in the front doors that sound about the same, together with a JL Audio bass and they create a music experience.. I've done very little adjusting with the head unit EQ and I've just been amazed,, JL Audio makes some incredible speakers.. I can't say enough about them..

Pros: Good rich clean sound.. They just sound great..

Cons: I have nothing here..

Great when paired with an amp

Written By Joey, Indianapolis on Tuesday, August 09, 2011

Crutchfield Customer Review (What's this?)

I had these installed my a custom shop here in town. Soundsational does excellent work anyone in the Indianapolis area. One of the component sets blew the woofer because i had them running off of the head unit power. Crutchfield immediately sent out a replacement to swap them out, great customer service! I paired these with a JL audio XD600/6 and ran 4 channels to these and the other 2 to the rear speakers. Wow, what a difference. Pair these with a good, clean amp and you are in business.

Get everything you’ll need to enjoy your new JL Audio C3-650

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
You'll need speaker wire to connect your speakers to your amp.
Keep your speakers clean and dry. They compress to fit behind your speakers.
These speaker connectors are handy if you're running new speaker wire or if your speakers have oversized terminals.
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Questions & Answers Ask the community. Share your knowledge.

1 question already asked

Yes they can be used without the crossover but the tweeter and woofer are on separate terminals and must have wires ran to each one. IMO I wouldn't run it this way due to unwanted frequencies going to the woofer and tweeter. Also it could possibly change the ohms and cause problems for amplifiers or head units whichever is to be used. [ JOHN  Nov 20, 2014 ]
I am using them as coaxial, but I am certainly using the crossovers. I want the flexibility, and I'm skeptical how the speakers would work without them. They are clearly part of the designed package. My expectation is that they provide protection for the speakers as well as controlling the sound. I'm driving the speakers with 900/5 amp and would not want to risk leaving the crossovers out, so I am making room for them. Each speaker has a pair of terminals, whether you connect them as component or coaxial. I download the installation manuals from the Crutchfield site before buying to better inform my buying choices, and that would probably clear up your question. [ EUGENE K  Nov 17, 2014 ]
You have to use the crossovers. [ DANIEL  Nov 16, 2014 ]