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JL Audio  C2-650x

C2 Series 6.5" 225W Peak Power Handling 4 Ohms, 2-Way Coaxial Car Speakers (pair)

Item #20490

Condition:   Brand New

Product Highlights

  • C2 Series
  • 6.5" Coaxial Car Speakers
  • 225W Peak Power
  • 4 Ohms Impedance
  • 2-Way Design

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
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60 DAYS Price change protection.
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$279.99

Reg. Price $289.99  Save 3%
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JL Audio C2-650X C2 Series 6.5" 60W RMS (225W Peak Power Handling) 4 Ohms, 2-Way Coaxial Car Speakers


We are a JL Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • (2) 2-way speakers
  • • (2) Grilles
  • • (8) Self-tapping screws (#8 x 1-3/16")
  • • (8) Speed clips
  • • (2) Crimpable female quick slides (0.205"/5.2mm)
  • • (2)Crimpable female quick slides (0.11"/2.8mm)
  • • (2) JL Audio logo badges
  • • Paper template
  • Owner's Manual

 


Why Choose JL Audio C2-650x Full Range Car Speakers?


JL Audio C2-650x Full Range Car Speakers Front Right Angled View
JL Audio C2-650x 6.5-Inch Coaxial Speakers for Premium Sound Quality

Upgrade your factory audio system with the JL Audio C2-650x 6.5-inch 2-way coaxial car speakers, engineered to deliver premium full-range sound with exceptional clarity and detail. Whether you're replacing worn-out factory speakers or building a high-performance car audio system, the C2-650x offers smooth, balanced sound, impressive dynamics, and the renowned reliability that JL Audio is known for.

Mica-Injected Polypropylene Woofer for Powerful Midbass Performance

The JL Audio C2-650x features a durable mica-injected polypropylene (MIPP) woofer cone paired with a long-lasting butyl rubber surround to produce accurate midrange, punchy midbass, and low distortion even at higher listening levels. JL Audio's advanced Dynamic Motor Analysis (DMA) technology improves cone control for cleaner, more detailed audio while maintaining consistent performance during extended playback.

JL Audio C2-650x Full Range Car Speakers Back Magnet Structure View
JL Audio C2-650x Full Range Car Speakers Top Down Full Frontal View with Mesh Grille
Silk Dome Tweeter with Built-In Crossover for Smooth, Detailed Highs

A 0.75-inch silk dome tweeter delivers warm, natural high frequencies with excellent detail and minimal listening fatigue, making the JL Audio C2-650x ideal for every music genre. The integrated crossover network ensures seamless blending between the woofer and tweeter while protecting both drivers from unwanted frequencies. The result is crisp vocals, accurate instrument reproduction, a wider soundstage, and an immersive listening experience that outperforms typical factory speakers.

 


JL Audio C2-650x vs C1-650x | Which 6.5" JL Audio Coaxial Speaker Is Best?


JL Audio 6.5" Coaxial Speaker Comparison
JL Audio C2-650x 6.5-inch Coaxial Car Speakers Front View

JL Audio C2-650x
6.5" 2-Way Coaxial Speaker

BEST SOUND QUALITY
  • • 6.5" 2-Way Coaxial Speaker
  • • 60 Watts RMS
  • • 225 Watts Peak
  • • 3/4" Silk Dome Tweeter
  • • Smooth, Natural Highs
  • • Better Midrange & Vocals
  • • Strong Midbass Performance
  • • Premium Factory Upgrade
  • • Includes Protective Speaker Grilles
JL Audio C1-650x 6.5-inch Coaxial Car Speakers Front View

JL Audio C1-650x
6.5" 2-Way Coaxial Speaker

BEST VALUE
  • • 6.5" 2-Way Coaxial Speaker
  • • 50 Watts RMS
  • • 225 Watts Peak
  • • 3/4" Aluminum Dome Tweeter
  • • Bright & Detailed Sound
  • • High 90.5 dB Sensitivity
  • • Easy to Drive with Factory Radios
  • • Shallower Mounting Depth
  • • Excellent OEM Replacement

Real User Feedback

Across enthusiast forums, many users feel the JL Audio C2-650x is well worth the extra investment if your budget allows. Owners frequently praise its smoother silk dome tweeter, richer midrange, stronger midbass, and more refined overall sound when paired with a quality amplifier. In comparison, the JL Audio C1-650x is consistently recommended as one of the best entry-level premium coaxial speakers thanks to its excellent efficiency, bright sound, easy installation, and impressive performance on factory or aftermarket head units without requiring an amplifier.

Final Recommendation

If You Want... Best Choice
Best Value JL Audio C1-650x
Factory Radio Upgrade JL Audio C1-650x
Easier Installation JL Audio C1-650x
Smooth, Natural Highs JL Audio C2-650x
Better Midrange & Vocals JL Audio C2-650x
Higher Amplifier Power Handling JL Audio C2-650x
Best Overall Sound Quality JL Audio C2-650x

Bottom Line: Choose the JL Audio C1-650x if you're upgrading factory speakers, using head-unit power, or looking for the best value. It offers excellent clarity, high sensitivity, and an easy OEM replacement. If you're adding a dedicated 4-channel amplifier or simply want the best overall listening experience, the JL Audio C2-650x is the better investment. Its smoother silk dome tweeters, improved midrange, stronger midbass, and more refined sound make it the preferred choice for enthusiasts seeking premium sound quality.

 


JL Audio C2-650x Recommended Amplifiers | Best 4-Channel Amp Pairing for Premium Sound Quality & Smooth Performance


JL Audio C2-650x Amplifier Matching Guide
Real-World Amplifier Recommendations Based on JL Audio Specifications and Enthusiast Feedback
Amplifier Matching Overview
C2-650x Power Rating: 60 Watts RMS per Speaker
Speaker Configuration: 4-Ohm 2-Way Coaxial Speaker System
JL Audio Recommended Amp Power: 15W–100W RMS per Channel @ 4Ω
Ideal Amp Range: 60W–75W RMS per Channel @ 4Ω
Goal: Improve clarity, tighten midbass, increase dynamic headroom, and eliminate distortion at higher listening levels.
Best Setup: A quality 4-channel Class-D amplifier producing 60–75W RMS per channel with an 80Hz High-Pass Filter.
Top Recommended Amplifiers for JL Audio C2-650x
JL Audio RD400/4: Best Overall – Delivers 75W RMS x 4 @ 4Ω with exceptional speaker control, lower distortion, and premium Class-D performance. One of the best amplifier pairings for the C2-650x if sound quality is your top priority.
JL Audio JD400/4: Best Value – Produces 75W RMS x 4 @ 4Ω, providing excellent headroom, clean power, and long-term reliability. A favorite among installers for maximizing the C2-650x without overspending.
Alpine R2-A60F: Best Premium Sound Quality – Delivers 100W RMS x 4 @ 4Ω with exceptional detail, dynamics, and speaker control. Properly adjusted gains make it an outstanding long-term upgrade for audiophile systems.
Rockford Fosgate R2-300X4: Best Daily Driver – Provides clean, controlled output with excellent reliability, making it a popular choice for daily-driven vehicles seeking premium sound.
Kicker CXA360.4t: Best Performance per Dollar – Produces approximately 65W RMS x 4 @ 4Ω, closely matching the C2-650x power rating while delivering excellent dynamics and efficiency.
Audison SR 4.300: Best Audiophile Choice – Offers exceptional transparency, accurate imaging, and low distortion, making it ideal for listeners seeking a refined, natural soundstage.
Alpine S2-A36F: Best Compact Value – Produces 60W RMS x 4 @ 4Ω in a compact Class-D chassis that's easy to install while delivering clean, distortion-free performance.
Gain & Tuning Recommendations
Gain Setting: Set amplifier gain using an oscilloscope, distortion detector, or multimeter to approximately 60W RMS per channel. Avoid tuning gains by ear.
High-Pass Filter (HPF): 80Hz with a 12dB/octave or 24dB/octave slope for improved midbass, cleaner vocals, and reduced distortion.
Bass Boost: OFF (0dB) for the most natural frequency response.
Low-Pass Filter (LPF): OFF unless you're powering a dedicated subwoofer.
EQ: Start flat and make only small adjustments after installation and speaker positioning.
Installation Tips
Door Sound Deadening: Applying sound-deadening material greatly improves midbass response and minimizes unwanted panel resonance.
Proper Speaker Sealing: Seal the speaker to the door with foam gasket tape or adapter rings to maximize bass performance.
Power Recommendation: Although rated at 60W RMS, many enthusiasts successfully pair the C2-650x with clean 75W RMS amplifiers. Proper gain adjustment provides additional headroom without risking speaker damage.
Pro Tip: Real-world C2-650x owners consistently report that adding a dedicated 60–75W RMS 4-channel amplifier is the single biggest upgrade after replacing factory speakers. Combined with an 80Hz high-pass filter and proper gain setting, the speakers produce cleaner vocals, smoother silk-dome highs, tighter midbass, and significantly higher output with less distortion than head-unit power alone.

 


Frequently Asked Questions (FAQ)


  • • Why does the low-end bass sound weak or lacking compared to my factory speakers?
    Factory speakers use loose cones that create a muddy, artificial bass boom. The C2-650x is engineered for tight, accurate mid-bass and high vocal clarity; deep sub-bass requires a dedicated subwoofer.
  • • Why do these speakers sound distorted and quiet when powered straight from the radio?
    The C2-650x is a premium 4-ohm speaker that thrives on clean power. Stock factory head units provide very low continuous wattage, causing them to clip and distort at higher volumes; adding an amplifier unlocks their true potential.
  • • Will the built-in tweeter assembly clear my factory car door speaker grilles?
    The silk dome tweeter protrudes 0.40 inches past the woofer basket face. In exceptionally flush or tight door panels, it may press against the factory plastic mesh, requiring you to use a slim spacer ring or foam gasket.
  • • Why do the speakers sound flat, hollow, or harsh right out of the box?
    The mineral-filled polypropylene cone and suspension are intentionally rigid when brand new. They require a progressive break-in period of roughly 15 to 20 hours of normal playing time to loosen up and sound smooth.
  • • Where are the external crossover modules, and how do I properly wire them up?
    There are no external boxes to mount. The C2-650x features a compact, high-quality high-pass crossover filter soldered directly onto the speaker's basket structure, allowing you to connect your factory wires straight to the terminals.
  • • Why do I hear an annoying rattling or buzzing inside my door panels when the volume is turned up?
    The long-excursion woofer cone shifts a significant amount of air and transfers kinetic energy into the door. If screwed directly into thin sheet metal without sound-damping material, it will cause heavy acoustic resonance and vibrations.
  • • Can I safely power these using an aftermarket 75-watt or 100-watt RMS amplifier?
    These speakers are rated for a maximum of 60 watts continuous RMS. You can use a larger amplifier safely, provided you keep your input gains low and clean and engage a high-pass filter (HPF) set around 60 to 80Hz.
  • • Why does the tweeter audio completely cut out or drop volume during long road trips?
    The speakers feature integrated thermal protection lines for the tweeters. Pushing a heavily distorted, clipped signal from an overdriven radio or amplifier—especially on hot days—triggers this safety mechanism. Lower the volume to let it cool and reset.

SPECIFICATIONS


  • Diameter : 6.5 Inch
  • Sensitivity : 91 dB
  • Impedance : 4 Ohm
  • Frequency Response : 59-22000 Hz
  • Peak Power Handling : 225 Watts
  • Design : 2 Way
  • RMS Power Handling : 60 Watts

FEATURES


Features:

  • High-Frequency Detail & Mid-Range: Delivers sparkling high-frequency detail, smooth mid-range, and powerful mid-bass.
  • Precision-Engineered Woofer Designs: 6.5-inch (165 mm) woofers with mineral-filled polypropylene cones, long excursion capabilities, and stamped steel frames.
  • JL Audio Expertise: Woofer design benefits from JL Audio's vast woofer design experience and advanced modeling systems.
  • Vehicle Compatibility: 6.5-inch (165 mm) format is a direct fit in many vehicles, with multiple mounting patterns on the woofer frame for easy installation.
  • Coaxially Mounted Tweeters: 0.75-inch silk dome tweeters deliver smooth, extended response on and off axis.
  • Minimal Tweeter Protrusion: Small size of the C2 tweeter minimizes protrusion, fitting behind most factory speaker grilles.
  • Included Accessories: Woofer grilles with black grille tray, satin silver accents, and a black steel mesh grille with an electroformed JL Audio logo.
  • Sonic Character: Clean and Dynamic.
  • Package Details: Sold as a pair.

 

Specifications: 

  • Speaker Size: 6 1/2
  • Design: 2-way
  • Tweeter Design: Dome
  • Impedance (Ohms): 4
  • Tweeter Composition: Silk
  • Woofer Composition: Mica-filled Polypropylene
  • Woofer Surround: Butyl rubber
  • Sensitivity (1W at 1 meter): 91
  • Sensitivity at 2.83 volts: 94
  • Frequency Response: 59 - 22k Hz
  • Minimum RMS Wattage: 15
  • Maximum RMS Wattage: 60
  • Peak Power Handling (Watts): 225
  • Top-mount Depth (Inches): 2 9/16
  • Cutout Diameter or Length (inches): 5 5/8
  • Mounting Height (Inches): 0.436
  • UPC: 699440996181
  • Weight: 6.01
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.

Do you own this product?

Write a review!
  • I have a set of these in my 2006 avalanche and let me tell you a big improvement from the factory bose speakers looking at getting another pair for my back doors

    derrick
    10/14/2014

  • tested these speakers and I’m about to get another installed, that’s how great they are!

    Ron
    11/25/2019

  • quality is the name when it comes to JL Audio speakers! the tweeters are not harsh and has some great bass. build quality is amazing

    D. Carter
    6/13/2024

  • Saved up for this huge upgrade! and its totally worth it. Worth every penny. Very high quality sound and such great build.

    Joelle
    9/29/2025
free installation

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