This JBL series incorporates many patents that are also found in JBL's pro speakers

$189.95189.95 per pair
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Does It Fit My Car?

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Upgraded speakers engineered to enhance today’s car audio systems.

JBL® GTO Series high-fidelity automotive speakers feature innovative technologies that we’ve engineered for the environment and conditions in today’s cars to help them deliver exceptional sound. Using patented, carbon-injected Plus One® (U.S patent no. 7,548,631) woofer cones, fiberglass-reinforced plastic (FRP) frames, butyl rubber surrounds and fabric tweeter diaphragms, GTO Series automotive speakers are the ideal upgrade to any car’s audio system. GTO Series speakers, including component separates with woofer, tweeter and passive crossover, cover the most popular factory-replacement and aftermarket sizes. Other unique features such as UniPivot™ (U.S. patent no. 6,002,780) tweeter positioning and tweeter level controls on select coaxial models or the I-Mount™ (U.S. patent no. 5,859,917) system for the tweeters in the component separates provide even greater installation flexibility to achieve the ultimate in-vehicle sound experience. Easily installed and built to last, JBL GTO Series speakers bring music to life in the car.

Item# GTO939

General Specifications

Size 6" x 9"
Type Three-Way

Audio Specifications

Power Handling (RMS) 5W-200W
Sensitivity (2.83V/1m) 94dB
Frequency Response 46Hz-21kHz
Power Handling (Peak) 300W
Nominal Impedance 3 ohms


Mounting Cutout Diameter (in) 8-5/8
Mounting Depth (in) 2-13/16
Mounting Cutout Diameter (mm) 219
External Diameter (in) 9-9/16
External Diameter (mm) 243
Mounting Depth (mm) 71
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 828 KB
  • 2 GTO 939 loudspeakers
  • 2 protective grilles
  • Owner’s/installation manual

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1 Year Warranty

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be eligible for exchange.

Call us: 1.800.336.4525

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GTO939 is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Great Speakers for the price. I installed these speakers into my 2009 Sierra in boxes under the rear seats with the tweeters facing up. I purchased the basic 6 x 9 boxes and they fit near perfect under the seat securely. I have a 40 watt 10 year old Sony amplifier turned all the way up and these speakers scream. Due to the size of the little 12 x 12 boxes, the bass is nothing to really brag about but the mids and highs are as good as it gets. I plan on following up the 6 x 9's with a pair of JBL 12's to get the bass I need to compensate for them. I can tell you that the sound is amazing, No popping or tweeter squeeling. These speakers will not disappoint. I could easily add my kicker 300 amp to them but they are plenty loud enough with the 40 watts behind them. I must also mention that I am still using my stock stereo. With an aftermarket unit and added EQ, these speakers could be fined tuned to perfection. Spend the extra money and get them. ROCK ON JBL. ROCK ON.
Date published: 2016-07-26
Rated 5 out of 5 by from Worth every penny!!! Great sound for a 6X9 3way I bought them to replace stock 6X9 rear speakers in a 2011 Nissan Altima. They sound great and rattle the license plate frame!!! Now I don't have to turn the volume up all the way to enjoy my music. I listen to dance,rap,r&b, and latin music. All sounds good wit these speakers!!!!
Date published: 2015-01-18
Rated 5 out of 5 by from Great speakers GTO 939 I got the speakers by Jan. I have a 2000 mazda protege that had good speakers but I didnt got the sound that I wanted, so i decided to try with JBL and the sound it was amaizing. The bass is incredible and the sound its so clear!
Date published: 2014-05-24
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The fitment system shows this will fit my 2006 Dodge Ram MegaCab front doors. But Crutchfield says the Minor apex diameter is 5.836 but the truck only has 5.815. Is this true and these won't fit? If they will, do they have the proper bracket to mount?

Asked by: Michaelh
The "Does it fit my car" feature on our site is more moderate. When verdict is "fit" the application implies that the speaker will work with minor modification from the user's end. Crutchfield, give you a more in-depth analysis on whether or not a speaker will fit as is. Our speakers generally come with grilles and owner's manual. Since there isn't a universal mount that works on all vehicles, additional brackets and/or tools needs to be acquired by the user separately.
Answered by: Bryan at Customer Service
Date published: 2017-04-19

on the home page these speakers say 'true 4ohm...' on the specs tab it says nominal impedance 3ohms...I am wanting to rig these with a pioneer deh-x5900bt...which specifies 4 ohms - what's the score?  

Asked by: paolo10
Hi Thank you for your question. First - The GTO 939 speakers should work fine with your Pioneer amplifier. since the total impedance will be very close to 4 ohms. (3 ohm from the speaker + 1 ohm from the wiring in the car) I hope this explains your question. Fell welcome to contact our call-center if you have further questions.
Answered by: Mogens
Date published: 2017-03-15

Will Those work on my 2011 Chevy 1500 Extended Cab LT

Asked by: AlanH
As shown on this product’s page, when you select the "Does It Fit My Car?", the GTO 939 is one of the speakers that will not fit your 2011 Chevrolet Silverado Extended Cab LT.
Answered by: Erik at Customer Service
Date published: 2016-11-28

Can I use this speaker on my Jeep Renegade Trailhawk MY 2017? Thank you in advance for your reply.

Asked by: Fabio1964
It is highly likely that the GTO 939 would fit your 2017 Jeep Renegade Trailhawk. Though this is a new model and our website’s database is not yet updated with this car's specs to quickly check this, the older Jeep Renegades uses 6 x 9 speakers. To be certain, we recommend you check the specs of the factory-installed speakers and if it does cover the dimensions of the GTO 939, then it’ll fit with minimal or no additional modifications. Here are the dimensions of the GTO 939 – Mounting Cutout Diameter (in)8-5/8 Mounting Depth (in)2-13/16 Mounting Cutout Diameter (mm)219 External Diameter (in)9-9/16 External Diameter (mm)243 Mounting Depth (mm)71
Answered by: Joe G at Customer Service
Date published: 2016-11-25

Can I use this speaker to replace my factory ones (2013 Toyota Avalon Limited) JBL with navigation. Since you do not have 7 x 10 replacements for what you put in the car.

Asked by: 13avalon
As shown on this product’s page, when you select the "Does It Fit My Car?", the GTO 939 is one of the speakers that will not fit your 2013 Toyota Avalon Limited.
Answered by: Mark at Customer Service
Date published: 2016-11-29

I'm thinking about buying these for a new sound system I'm building. What amp(s) do you suggest for these and also some GT7-6s?  ps. If you have any better suggests speaker-wise, I'd love to hear it, so I can find the absolute best. THANKS!

Asked by: TristanKyzer
Absolutely. The GT7-6s has an RMS wattage rating of 45 watts. This means that any amp with a power output of 45 watts per channel or less will work fine with this speaker. At the moment, a 45 watt amp is not available. However, I can recommend the GX-A602, a 60 watt amplifier. As long as you don't crank it to the max, causing it to send distortion to the speakers, you will not have any problem. And for the other speakers that you will be including on this system check what best fits your car by using the "Find what fits your car" feature above, choose your vehicles make and model then select speakers. You can see there all speakers, including the GT7-6s, which is compatible or could fit your vehicle.
Answered by: Joe G at Customer Service
Date published: 2016-09-15

I am looking to pair a RF 400-2 to the perfect set of 6x9s for the front doors of a 2014 Grand Caravan. A 400-4 will power the dash speakers and the rear. I am trying to get the fullest sound without a sub. What is the best mix of JBL speakers for this?

Asked by: Bluemayskye
The GTO939 can hadle 200 watts of RMS power handling. So as long as your amp has a power output of 200 watts per channel or less, these speakers will sound great with your RF400-2 amp.
Answered by: Joe G at Customer Service
Date published: 2016-08-08

I just purchased these and the JBL GTO638s for my 2013 Altima to replace my stock speakers. What amp would I need to install for these speakers?

Asked by: McAce97
Im not a professional or know much but let me know how it sounds. Im thinking of getting these for my 2015 nissan sentra. Idk how many watts all your speakers put out but check your original amp to see how much its putting out then add minimum of 300 watts. These speakers are 200 watts continuous or rms 200 watts between the 2. 300 peak for i think just 1 speaker so maybe add 600 watts higher than stock for amplifier. Do they fit your car without any modifications? 
Answered by: Audiohead16
Date published: 2016-07-19
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