JBL Stadium GTO 620 6-1/2" 2-way Stadium Coaxial Speakers

Model: STADIUM GTO 620AM UPC: 050036338738 Item: 170615


Regular Price: $180.00

Save: $30.05 (17%)

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754 Route 309 (Bethlehem Pike) Montgomeryville, PA 18936
  • Mon - Fri: 9:30am - 6pm
  • Sat: 9:30am - 5pm
  • Sun: 12:00pm - 5pm
(215) 368-8343
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38 Greenfield Avenue, Ardmore, PA 19003
  • Mon - Fri: 11am - 6pm
  • Sat: 10am - 5pm
  • Sun: CLOSED
(610) 649-7002
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Product Information

Ultimate Car Audio by JBL

JBL—speaker of choice for the world's top recording studios, concert events, and movie theaters, delivers a world class listening experience to car audio with the new Stadium speakers. Unmistakably JBL. The high-output 2-ohm design extracts every watt of power from the amplifier or head unit enabling the patented Plus One woofers to deliver an impressive wallop for mega volume aficionados. Sophisticated crossovers coupled with soft dome tweeters produce smooth-as-silk highs with extraordinary detail, even at the highest volume levels. An optional midrange speaker with bandpass crossover provides seamless integration with woofer and tweeter, transforming a two-way component system into a three-way system for another magnitude of sound. Rigorous OEM-level reliability testing provides peace of mind when it's time to crank it up for that inimitable JBL adrenaline surge.

Eight Models to Accommodate All Applications/Environments

Stadium GTO620 - 6-1/2" (160mm) two-way multi-element speaker.

JBL Patented Plus One Glass Fiber Woofers with Rubber Surrounds

Plus One glass fiber woofer cones are lighter and stiffer, with up to 25 percent more active cone area than the competition. The result is remarkably accurate sound with high SPL performance. The hi-roll rubber surrounds allow the woofer cone to more freely and emit bolder bass.

Over-sized (35mm) Woofer Voice Coils

Over-sized voice coils with extra copper and surface area serves to dissipate the heat for improved reliability, enabling maximum power handling with low distortion.

Edge-Driven Soft Dome Tweeters

Home theater quality soft dome tweeters deliver broader and smoother high frequency response. A push-button tweeter level control (+0 dB flat and +3 dB) provides custom tuning of high frequencies in most multi-element speakers.

3-Way Upgradability

Crossovers on component systems are gap-switchable to accommodate a midrange upgrade. The optional midrange includes a bandpass crossover to convert a two-way system into a three-way system with perfect tonal balance and is designed to fit into many factory three-way applications.

High Output 2-Ohm Design

High-output 2-ohm design with low impedance voice coils extract every watt from the amplifier, delivering peak power with ease. Lower impedance also compensates for any added resistance in thin factory-installed wiring.

Harman Standard Reliability Testing

JBL speakers have to go through environmental testing that would destroy other speakers. JBL freezes them, bakes them, shakes them, blasts them with ultraviolet light, and drives them at full power for days at a time.

Competitively Tuned

JBL employs second order filters for tweeters and sophisticated two-way crossovers for multi-element speakers and component systems resulting in higher power handling and added flexibility and accuracy when tuning speakers. A higher-quality crossover allows JBL's wizards to consider speaker acoustic characteristics as well as specifications when tuning the JBL sound.

Stadium Speakers by JBL

The modern exterior design and premium finishes of Stadium speakers further reflect the quality of JBL engineering. In short, they look as good as they sound.

Prop 65 Warning

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.



  • Power handling: 75Wrms, 225W peak
  • Sensitivity (@ 2.83V): 95dB
  • Frequency response: 45Hz – 25kHz
  • Voice coil diameter: 1-3/16 in. (30mm)
  • Impedance: 2.5 ohms

What's in the Box

What's in the Box:

  • One pair of Stadium GTO 620 speakers
  • One pair of grilles
  • One pair of adapter rings
  • One pair of foam gaskets
  • 16 screws
  • 8 speed clips
  • One pair of JBL logo badges
  • One pair of stickers
  • Owner's manual



Customer Reviews for JBL Stadium GTO 620 6-1/2" 2-way Stadium Coaxial Speakers

5.0 / 5.0
2 Reviews
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1 Star
Will this speaker fit my car
Will this speaker fit my chevy cruze 2012 pioneer package? I plan on placing in the front doors. I have jbl gtx963 6x9 on rear deck that work fine.
August 3, 2018
Originally posted at
Amazing sound quality at high volume
I bought this a few weeks ago installed it same day best SQ and high SPL great performance increases dB level from 135.6 to 140.1 with sealed car install was easy looks great sounds even better custom install speakers fits behind factory location but I wanted that good looking grill to be on so the sexy look of it could be seen by all
March 29, 2018
Originally posted at


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Prop 65 Warning

WARNING: California Residents - Proposition 65. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.