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JBL GX600C

6-1/2" component car speaker system

Item # 109GX600C

JBL makes speakers for trend-setters, those who want a car speaker that looks as good as it sounds.

Find what Fits your vehicle

JBL makes speakers for trend-setters, those who want a car speaker that looks as good as it sounds.

Discontinued item
6 questions - 18 answers

Item # 109GX600C

60-day returns

If you don't love it, send it back.

Since 1974

Years of experience making people happy.

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About the JBL GX600C

Stylish sound

JBL makes speakers for trend-setters, those who want a car speaker that looks as good as it sounds. The GX600C 6-1/2" component speaker system flaunts a contemporary look that's backed by JBL's legendary commitment to excellent sound. This system includes two woofers, two tweeters, and two external crossovers. JBL's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better midbass experience. And an edge-driven tweeter expands the high-frequency range, so you'll hear musical details that you never heard from your old speakers.
JBL GX600C

JBL includes external crossovers with adjustable tweeter level control.

Stylish sound

JBL makes speakers for trend-setters, those who want a car speaker that looks as good as it sounds. The GX600C 6-1/2" component speaker system flaunts a contemporary look that's backed by JBL's legendary commitment to excellent sound. This system includes two woofers, two tweeters, and two external crossovers. JBL's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better midbass experience. And an edge-driven tweeter expands the high-frequency range, so you'll hear musical details that you never heard from your old speakers.

The little things that count

The GX600C's low-impedance design safely draws more power from your car stereo or amp to give your music extra punch. JBL also includes external crossovers with adjustable tweeter control so that your lows and highs are evenly distributed and perfectly amplified.

A match for any system

These 2.3-ohm speakers are sensitive enough that you can power them with an aftermarket stereo, but you'll get even better results feeding them power from an outboard amp — up to 70 watts RMS.

Installation note: You'll need a pair of our universal backstraps to install the tweeters in the factory locations.

READ LESS

Product highlights:

  • component speaker system includes two woofers, two tweeters, and two crossovers
  • 6-1/2" polypropylene Plus One™ woofer cone
  • 1-13/16" edge-driven soft dome tweeter
  • power range: 2-70 watts RMS (210 watts peak power)
  • frequency response: 50-21,000 Hz
  • impedance: 2.3 ohms
  • sensitivity: 92 dB
  • woofer top-mount depth: 2-1/16"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # GX600C

What's in the box:

  • 2 Woofers
  • 2 Tweeters (each with 6" wire attached)
  • 2 Crossovers
  • 2 Woofer grilles
  • 2 Plastic 6-3/4 adapter brackets
  • 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 screws
  • Eight 1" Self-tapping screws
  • Eight 1/2" Self-tapping pan head screws
  • Six 5/8" Self-tapping flat head screws
  • 2 Washers
  • 2 Nuts
  • 8 Speed clips
  • 2 Adhesive backed foam gasket rings
  • 2 Adhesive backed foam gasket strips
  • Template on box
  • Owner's manual

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JBL GX600C reviews

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More details on the JBL GX600C

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 2-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 2.3
Tweeter Composition Fabric
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 92
Frequency Response 50 - 21k Hz
Minimum RMS Wattage 2
Maximum RMS Wattage 70
Peak Power Handling (Watts) 210
Top-mount Depth (Inches) 2 1/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5 1/16
Mounting Height (Inches) 0.487

Product Research

Features

Plus One Woofer Cones: The Plus One woofer 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.

Size Classification Note: These speakers are marketed as 6-1/2"; they will fit standard 6-1/2 speaker openings, but do not use the industry standard bolt pattern (then again, neither do many car manufacturers at this point). Without using an adapter bracket or drilling new screw holes, the speakers fit many standard 6-3/4 applications. The included brackets adapt the speakers to standard 6-1/2 three hole, Ford four hole, and a variety of oversized 6-3/4 installations. If new screw holes are drilled in the mounting surface of the car, it may be possible to mount the speakers in many of these applications without the brackets. Please refer to the Crutchfield Vehicle Selector to confirm fit in your vehicle.

High-Output Design: The 2.3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

Tweeters: The edge-driven soft dome tweeters can be mounted several different ways using the included hardware:

  • I-Mount System: The tweeters can be surface- or flush-mounted with JBL's 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: 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 housing (from behind the mounting surface) to hold the assembly securely in place. When flush mounted, the tweeters may be angled for optimum 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 0.845" 0.626" 0.0" 0.835" 0.363" 0.211"
Depth 0.51" (screw depth) 0.788" 0.944" 0.51" (screw depth) 0.475" 0.627"
Frame Diameter 1.482" 1.846" 3.05" 2.446" 2.296" 2.296"
Cutout Diameter N/A 1.586" N/A N/A 1.51" 1.125"

Crossover Connections: The passive crossovers feature screw terminal inputs and outputs; they will accommodate bare wire or spade connectors up to 0.3" wide.

Tweeter Level: A switch on each crossover allows you to adjust the output level of the tweeter; choose 0 dB (flat) or +3 dB.

Crossover Mounting: Each crossover can be mounted using four of the included screws.

Crossover Dimensions:

  • Length: 3.16"
  • Width: 3.93"
  • Height: 1.16"

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Customer Q&A

6 questions already asked

Q
What is the impedance of the actual woofer and tweeter by themselves? Putting these in using factory wiring in parallel, so need to know what the individual impedance is so I can calculate final load.
[ evan  Mar 18, 2019 ]
1 answer
A
We don't have that information, but I should point out that installing it like you have mentioned would allow bass to make it to the tweeter and highs to make it to the woofer which will cause bad things to happen. I recommend rerouting the wires so the tweeter and woofer can be connected to the crossover and then connect that to the input on the stock system. Doing this would still have both connected to the same channel like the stock is now but make it so that the drivers will produce only the audio they were made to produce My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  Mar 26, 2019 ]  Staff
Q
What is the best amplifier for these speakers?
[ SupeRoman  Dec 04, 2018 ]
6 answers
A
I really like the JBL Series camps available at Crutchfield they're shore to have something for your needs . I recommend a five channel amp the more watts the better crank it up !!!!
[ AARON  Dec 05, 2018 ]
A
I used the OEM amplifier, but I suggest used the same brand of car stereo in case you replace your car stereo.
[ ALFREDO  Dec 04, 2018 ]
A
Im just using a Pioneer car stereo. That's good enough for me.
[ Heliodoro  Dec 04, 2018 ]
A
These speakers are very efficient a good clean head unit will suffice but if you're going to amp them 50 to 75 per channel will make them really boom pick the name brand amp that you like best make sure the wattage is clean
[ Matthew  Dec 04, 2018 ]
A
I didn't purchase an amplifier...I'm just swapping out my stock speakers with these new ones.
[ Castulo L.  Dec 04, 2018 ]
A
To answer this,"begin with the end in mind." What is the outcome you want to achieve? and that will direct the amplifier of choice. You will also need to consider the constraints you need to work around such as vehicle size, the quality of the music source i.e factory HU, audio file type, and portable device connection(direct or bluetooth) are some considerations. These speakers are rated for up to 70 RMS continuous so any amp that can deliver power in this range will work. I bought these speakers to upgrade the front doors of a 2017 chevy cruze and they improved the sound over the factory speakers. My goal was to build a system with clean sound, tight bass, but not at high volume levels. However, while the sound was cleaned up some, the factory HU does produce adequate power to fill in the mid-bass and lows much over the stock speakers. My intention, was to add an amp to boost the power in an attempt to fill out the lows and clean up the sound. Before I bought an amp for these speakers I installed a 10" subwoofer in a sealed box in the trunk-- WOW what an amazing difference!!! The addition of the sub dramatically improved the bass (obviously) but also dramatically improved the apparent sound quality of these component speakers. When playing music direct from my iphone (high bit rate= good source quality) my system sounds very clean with good dynamic range and volume even with the factory HU. In fact, it is now 'good enough' that I won't be adding an amp after all. If you want to play loud with less distortion add an amp. If you are hoping to improve the bass output of you system you will be disappointed that even a great amp will only moderately improve the bass output from a 6 1/2" driver. My system; Factory HU. Dash speakers-disconnected (to harsh) Front doors- JBL GX600c Rear doors- Stock speakers Subwoofer- 10" Rockford Fosgate P3 Subwoofer amp- Rockford Rosgate Prime 500.1 Line converter/Bass restore-- Audio Control LC2
[ steve  Dec 04, 2018 ]
Q
Can these be used with an aftermarket 4ohm amp? I'm looking at changing out my old factory 2ohm amp with the Alpine 445U (45W RMS), and will likely need to run new (16gauge) wires. I also want to replace the rear door speakers with 4ohm. Or, if I kept these, would I need another set of 2.3ohm JBLs for the back?
[ David  Feb 02, 2016 ]
4 answers
A
Yes, they will work fine with a 4 ohm amp.
[ Brian  Feb 03, 2016 ]
A
in my case i used the alpine ktp-445u amp with fosgate r152-s in the front and fosgate r1525x2 in the rear doors of a honda element and it all worked out great. i also added a 200 watt 10" sub and that was a perfect fit. my son was very happy with the system.
[ Thomas  Feb 03, 2016 ]
A
The Alpine amp puts out 45 watts x4 at both 4 and 2 ohm, so those JBL speakers would work the Alpine amp and would get 45 watts. Personally, I would run the JBLs up front and in the back.
[ Ryan-  Feb 03, 2016 ]
A
I'm not an electronics expert but I installed the JBL GX600C on my Tahoe with a 40 Amp amp. and they work fine. I love the deep sound of the JBL speakers.
[ Arnold  Feb 03, 2016 ]
Q
What are the specs for the tweeters?
[ Ramhawk  Nov 11, 2015 ]
2 answers
A
i was going to provide you a link to the official tech specs sheet from the manufacturer but it advises me here not to. So you should either get into a live chat with a crutchfield rep or look for the manufacturers spec sheet for the gx600c
[ JOSE  Nov 12, 2015 ]
A
Muy bueno.........
[ Rolando  Nov 12, 2015 ]
Q
How is the bass in these speakers??
[ Carson  Aug 20, 2015 ]
4 answers
A
Execelent getting ready to purchase another set for my jeep
[ JOSEPH A  Aug 21, 2015 ]
A
The bass is awesome as in all JBL speakers. My favorite speakers.
[ Arnold  Aug 21, 2015 ]
A
I'm running these off head unit power with a powered sub (underseat x-over at 120hz so hard to say about the bass response. I believe they are not "ground shaking" but sufficient for front door environments.
[ Michael  Aug 21, 2015 ]
A
I have a factory stereo head and just upgraded the speakers, no amp. The bass is a big improvement over factory.
[ GREG  Aug 21, 2015 ]
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