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JBL Stadium GTO620

6-1/2" 2-way car speakers

Item # 109GTO620M

One of my favorite moments during a car audio installation is pulling out an old, ragged factory speaker from its...

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One of my favorite moments during a car audio installation is pulling out an old, ragged factory speaker from its...

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Item # 109GTO620M

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About the JBL Stadium GTO620

Say goodbye to factory sound

One of my favorite moments during a car audio installation is pulling out an old, ragged factory speaker from its location and then picking up its new, aftermarket replacement. And if you're installing JBL's Stadium GTO620 premium car speakers, the immediate difference is a dramatic jump in design and build. From the hefty magnet to the oversized voice coil with shimmering copper, you can see and feel improvement — now just imagine how much better they'll sound than the browning antiques that have been filling your ears with compromised audio for so long.

Say goodbye to factory sound

One of my favorite moments during a car audio installation is pulling out an old, ragged factory speaker from its location and then picking up its new, aftermarket replacement. And if you're installing JBL's Stadium GTO620 premium car speakers, the immediate difference is a dramatic jump in design and build. From the hefty magnet to the oversized voice coil with shimmering copper, you can see and feel improvement — now just imagine how much better they'll sound than the browning antiques that have been filling your ears with compromised audio for so long.

Edge-driven dome tweeters

JBL created their GTO620 6-1/2" speakers as a hi-fi solution for those who want better sound in their vehicle. You'll find an edge-driven design in their PEI polymer dome tweeters for a smoother, more open response and minimal distortion at high volume levels. Each tweeter also features a level control button so you can adjust the brightness to your taste.

Woofers enhanced with Plus One+ technology

JBL's glass fiber woofer will hold its shape when the power's cranked up, so you still get punchy and defined bass. Glass fiber weighs less than traditional materials, so you don't need a ton of power to drive this woofer either. JBL's Plus One+ woofer technology extends the cone right up to the edge of the basket, giving you lots of surface area — and a bigger cone means more bass to complement the superior high-frequency response.

Power handling perfect for any system

These 2.5-ohm speakers boast ultra-high sensitivity so that you can power them with a factory radio or aftermarket stereo, but you'll get your best results feeding them plenty of power from an outboard amp. Either way, these speakers' low impedance safely takes advantage of every watt of power available for exceptional performance. Grilles are included.

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Product highlights:

  • 6-1/2" 2-way car speakers
  • Plus One+ glass-fiber woofer cone with hi-roll rubber surround
  • edge-driven, PEI polymer dome tweeter
  • included brackets allow mounting in a variety of 6-3/4" and 6-1/2" openings
  • 2.5-ohm impedance
  • handles up to 75 watts RMS (225 watts peak power)
  • frequency response: 45-25,000 Hz
  • sensitivity: 95 dB at 2.83 volts
  • top-mount depth: 2-1/8"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # STADIUMGTO620AM

What's in the box:

  • Two 2-way speakers
  • 2 Grilles
  • 2 Plastic mounting adapter brackets
  • 2 JBL logo badges
  • 2 Adhesive backed foam gaskets
  • Eight 1-3/8" Screws
  • Eight 1/2" Screws
  • 8 Speed clips
  • Instruction manual

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JBL Stadium GTO620

Crutchfield customer from Linwood, MI on 9/1/2019

2005 Volkswagen Passat

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Night and day difference ! Couldn't be more happy with the purchase, great sound with highs , lows and mid range. Highly recommended if you want crisp, clear sound!

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0 of 0 found this helpful

Sound great!

Crutchfield customer from Huntingtn Sta, NY on 8/26/2019

2016 Mazda MX5

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I replace the Bose door speakers in my 2016 Mazda MX5 GT. These have tweeters that you can rotate upwards and toward your face, which make for much clearer highs and a fuller sound. If you like a lot of bass these will deliver a good sound along with the Bose sub already in the car. You just have to up the base setting on the controls a little if you like it heavy, but the overall effect is tighter cleaner bass and mids than I had with the original door speakers. Speakers come with harness adapters and mounting brackets and good instructions, so that really makes it a breeze. Overall, easy to do, inexpensive and a good change to the sound, good at least in my car.

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0 of 0 found this helpful

Crisp bass, but treble doesn't sit right with me. Consider Infinity

Arthur from Michigan on 8/25/2019

2015 Kia Forte

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I had good impressions of JBL from my father's Toyota that had them from the factory, so I thought I'd give these a go. These GTOs have great clean bass when I installed with a cut baffle and some sound deadening, but they seem pretty fatiguing on the treble for my taste. It may be the tweeter design, and considering that I also purchased a pair of Infinity Kappa 62ix (both designed by Harman and extremely similar except for the middle/tweeter). By direct comparison the Infinity hits the high-end more accurately to me, and actually.. the bass is seems more present possibly due to the treble's footprint difference from the JBLs. I'm sure it depends on your taste or ear sense, but I'm very grateful that I came across the Infinity sibling model !

Pros: Glass fiber woofer seems futuristic, and means less flex for cleaner low-end ;) Also, the size of the driver is freaking huge

Cons: The JBL tweeter on these units can cause ear fatigue, if sensitive I would suggest Infinity Kappa 62ix !

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JBL Stadium GTO620

Crutchfield customer from Houston, TX on 8/18/2019

2019 Mazda MX5

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These speakers brighten up the mx5 bose stereo

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0 of 0 found this helpful

JBL Stadium GTO620s are AWESOME!!

Crutchfield customer from Mukwonago, WI on 8/8/2019

2017 Mazda MX5

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I purchased these JBL Stadium GTO620s and easily installed them using the supplied adapter plates and wire harnesses from Crutchfield recently! These speakers TRANSFORM the audio quality of our 2017 MX-5 Club that already has a Bose Sound System! The sound is SO much clearer and cleaner and has a Surround sound from the tilted tweeters that I pointed back and upwards slightly! I absolutely recommend the JBL Stadium GTO620s to anyone wanting a quick, easy audio upgrade!

Pros: Price, Quality, Clarity, Power

Cons: None!

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0 of 0 found this helpful

SOLID MID BASS GREAT HIGH FREQUNCEY

Crutchfield customer from Blaine, WA on 7/1/2019

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FANTASTIC LOVE THEM

Pros: THEY FIT PERFECT GREAT ACCESORIES THAT COME WITH SPEAKERS

Cons: CAN'T THINK OF ANY

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3 of 3 found this helpful

JBL Stadium GTO620

Crutchfield customer from Jeffersonton, VA on 6/30/2019

2010 Harley-Davidson Street Glide

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Replaced factory Harley Davidson speakers. They are great speakers

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2 of 2 found this helpful

Average

Crutchfield customer from Cypress, TX on 6/3/2019

2016 Subaru WRX

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Tweeters are too bright.

Pros: Cheap

Cons: Tweeters are real bright

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3 of 3 found this helpful

JBL Stadium GTO620

Crutchfield customer from Herrin, IL on 5/31/2019

2014 Chevrolet Camaro

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Excellent clarity. Great sound reproduction even with stock head unit.

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1 of 1 found this helpful

JBL Stadium GTO620

Crutchfield customer from Lakewood, OH on 5/20/2019

2012 GMC Sierra

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Best for my pricerange

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Great sound wasn't disappointed!

Adrian from lubbock on 4/18/2019

2011 Buick Regal

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I have these in the front and back doors. Crutchfield said it wouldn't fit my 2011 Buick Regal with Harmon Kardon system, but with Scosche brackets and some grinding of the plastic on the inner rear door panels. I replaced some Memphis SRX62 6.5 that were lacking power handling (30 watts rms) and midbass I was looking for. My factory amplifier is 320 watts for the 9 speaker system. I chose these because they are 2.5 ohms as my factory speakers were 2 ohms. The midbass is sufficient as I have a JL HO 110RG W3v3 in the trunk. I have a kill switch and listen to music without the sub sometimes and these have a full complete sound! I put some sound deadening behind each speaker because I figured they would thump and they do. They make some things rattle in my door cubby and cup holder. I have the tweeters set at 0 db as they are bright enough. I just wish I had the time to make custom door pods to show off these pretty speakers and hear the full potential!

Pros: Great Midbass and Highs, adjustable tweeter angle, good power handling and They just look good!

Cons: Can't think of any

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4 of 4 found this helpful

JBL Stadium GTO620

Crutchfield customer from Vero Beach, FL on 4/9/2019

2019 Mazda MX5

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These speakers brightened and improved the sound of the factory speakers with the aid of some DynaMat in the door surround and without adding any amplification.

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3 of 3 found this helpful

Decent but not great.

Crutchfield customer from Ludington, MI on 3/19/2019

2017 Chevrolet Colorado

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No more volume or bass than the factory speakers, but cleaner mids and highs.

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0 of 1 found this helpful

JBL Stadium GTO620

Crutchfield customer from Summerset, SD on 12/8/2018

2015 Chevrolet Silverado 1500

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Replaced the rear speakers in my Silverado. Great upgrade. I used some sound deadening material inside the doors and it sounds great!

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0 of 0 found this helpful

Great Mid-bass Upgrade for Toyota's 2 ohm stock JBL speakers

David from Beverly, MA on 12/2/2018

2003 Toyota Camry

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I just installed a pair of JBL Stadium GTO620 speakers in the rear doors of my 2005 Toyota Avalon. After reading the reviews of speakers on Crutchfield's website, I decided on the Stadium GTO620 for one purpose: mid-bass response. Having designed and built my own second order cross overs in the past, I was very impressed with the way JBL integrated their crossover into the speaker and added a push button for +3 db attenuation of the tweeter frequencies. For testing automotive speakers before and after an upgrade, I recommend listening to The Airborne Toxic Event's self-titled debut album "The Airborne Toxic Event" released in 2008. The first track "Wishing Well" begins with mid-range and high frequencies before the bass kicks in to demonstrate what the JBL's 6 1/2" Plus One glass-fiber woofers are capable of reproducing. I am very pleased with the design and how these speakers perform. The 2.5 ohm impedance matched well with the other stock JBL 2 ohm speakers and allowed me to keep to the original JBL head unit.

Pros: Mid-bass response. Ease of installation. Excellent design and wide range frequency response.

Cons: None

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2 of 2 found this helpful

First JBL car speakers

Mike from Marshfield, WI on 12/2/2018

2015 Hyundai Elantra

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Ive never owned any JBL car audio equipment, but im impressed so far. Nice and loud with some great audio fidelity. I listen to a lot of old school rap and movie scores (dont judge). I would say that the movie scores with big booming soundscapes fare a tad better with these things. I'm still breaking them in but Im impressed with what ive heard so far. I really wish that my car didnt have curved door panels where the speaker grills would go, because the speaker and grills are really well designed and cool looking. OH on a side note, the tweeters in the center rotate with satisfying clicks... i did not know that until i installed the 2nd speaker.

Pros: big loud sound cool looking great overall sound

Cons: the magnets on these things are the size of my head none really

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5 of 5 found this helpful

JBL Stadium GTO620

James from Newport News, VA on 11/6/2018

2017 Dodge Challenger

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I just installed these in my 2017 Challenger rear deck and I am very pleased with he sound. Currently I am using the factory head unit, and I am very satisfied with the sound these produce. I plan on adding another set to the doors. Compared to the Alpine type R ( i originally swapped the factory speakers out with these) i feel the are better. It could be because those speakers have a 4 ohm impedance, but in my opinion these were superior. Event though it shows that these aren't a for the rear deck they went in just fine.

Pros: Outstanding sound quality decent bass clear highs that are not overwhelming.

Cons: None for the actual product, but i wish I would've purchased the first time around.

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2 of 2 found this helpful

Very Nice

John from Houston, TX on 9/10/2018

2016 Subaru WRX STI

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I have these amp'd w 125W and are in the rear doors of 16 WRX-STI. JBL Studio components w the 3way add-ons are in the front. These coax sound good and will get super-loud with acceptible bass. From my experience, these are on par with JL C2's...with a touch better bass response.

Pros: Good bass, low ohm, can handle high power, very loud

Cons: None

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6 of 6 found this helpful

JBL Stadium GTO620

Crutchfield customer from Orlando, FL on 8/31/2018

2011 Chevrolet Silverado 1500

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Love them

Pros:

Cons:

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0 of 1 found this helpful

The 'do' fit the 2016+ Tacoma ...

Richard from Sandown, NH on 8/16/2018

2018 Toyota Tacoma

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Both Crutchfield and another online retailer indicate these speakers do not fit the 2016+ Tacoma rear doors. However, the speakers fit perfectly; it's just that there's no after-market brackets available. If you're willing to invest the time to create your own brackets - as I did, you can mount these in the rear doors, and mate them with the JBL Stadium GTO960C to maintain a pure JBL audio system. At 2.5 ohms, there will be a ~20% loss in volume but, the quality makes up for it. I was first steered towards Powerbass speakers - which are a significant improvement over the crappy JBL stock speakers but, the sound quality was not as expected, so I'm sending them back. Additional details available upon request ...

Pros: At 2.5 ohms, good option to replace JBL stock speakers

Cons: If installing in 2016+ Tacoma rear doors, need to create your own brackets

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1 of 2 found this helpful

JBL Stadium GTO620

Crutchfield customer from Grover Beach, CA on 7/29/2018

1969 Pontiac GTO

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They sound good. I have them installed in a convertible and they are able to get a good sound and higher volumes.

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1 of 1 found this helpful

JBL Stadium GTO620

David from Rome, GA on 7/18/2018

2012 Ford Focus

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Nice

Pros:

Cons: Can't think of any

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0 of 1 found this helpful

JBL Stadium GTO620

Crutchfield customer from Saugerties, NY on 6/11/2018

2012 Harley-Davidson Street Glide

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put these on my 2012 street glide speakers sound good when at high volume they crack a bit could be that I need an amp with them. overall a decent speaker for the money

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2 of 2 found this helpful

JBL Stadium GTO620

Crutchfield customer from Ridgway, PA on 5/29/2018

2008 Chevrolet Silverado

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Amazing sound all around

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0 of 0 found this helpful

JBL Stadium GTO620

Crutchfield customer from Mesa, AZ on 5/28/2018

2011 Harley-Davidson Electra Glide

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Very clear, excellent sound, have to see if I bridge my amp and drive more power will it improve the bass? Driving 45 watts now, I can max at 90 have to see what this does

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2 of 2 found this helpful

JBL Stadium GTO620

Crutchfield customer from Orlando, FL on 5/15/2018

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JBL Stadium GTO 620

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Cons:

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0 of 6 found this helpful

Sounds great

Aaron from Albuquerque, NM on 4/24/2018

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Some of the best sounding speakers on a motorcycle

Pros:

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1 of 2 found this helpful

JBL Stadium GTO620

Crutchfield customer from Baltimore, MD on 4/23/2018

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I bought these to put into the fairing of my Electraglide. With the use of the 5 1/4 to 6 1/2 adapters, I was able to do so. Although these speakers have a nice overall sound, you can tell the middle range is seriously lacking. They happen to be one of a two component system offered by JBL. There is a specific midrange speaker available that should fill that void. The highs are very crisp and clear. The bass I really can't attest to as the fairing they are mounted in is not very conducive to bass.

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More details on the JBL Stadium GTO620

Pat M.

Features & specs

General
Speaker Size 6 1/2
Design 2-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 2.5
Tweeter Composition PEI
Woofer Composition Glass Fiber
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 95
Frequency Response 45 - 23k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 75
Peak Power Handling (Watts) 225
Top-mount Depth (Inches) 2 1/8
Bottom-mount Depth (Inches) 2 7/16
Cutout Diameter or Length (inches) 5 1/16

Product Research

Features

Plus One Woofer Cones: The Plus One speaker 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.

High-Output Design: The high output 2.5Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring and extracts every watt from factory receivers, increasing overall system output and efficiency (relative to 4Ω speakers). The speakers also benefit from increased power when you upgrade the wire and add aftermarket amplifiers, designed to power a 2.5Ω load.

Edge Driven Dome Tweeters: Each speaker has an Edge-driven soft dome tweeter. Edge-driven tweeters have better dispersion characteristics and allow for a lower crossover frequency than typical tweeters of the same size, which improves imaging, vocals and musical clarity. The tweeter also has an output level switch; choose +0 dB (flat) or +3 dB. The tweeter is angled and can be rotated about 270° after installation. This allows you to direct the tweeters toward the listeners, useful for speakers mounted low in a door.

Mounting Applications: These speakers are marketed as 6-1/2"; they will fit in standard 6-1/2" speaker openings (approximately 5" diameter), but do not use the standard 6-1/2" speaker bolt pattern. In order to install them in standard 6-1/2" speaker openings you must drill new screw holes. If new holes are drilled in the mounting surface of the car, no bracket is needed. If drilling in the car is not an option, the included brackets can be used, which have standard 6-1/2" mounting holes and the Ford non-symmetric four hole pattern. When using the brackets the depth becomes 1.85" and the mounting height becomes 1.121". Please enter your vehicle information to confirm fit.

Terminals: The input terminals are set screws that will accept up to 12 gauge bare wire.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
JBL fan and price [ gary  Mar 13, 2019 ]

2 questions already asked

Q
will this fit 2017 nissan frontier and is this speaker same dimensions as GTO629?
[ Dan  May 12, 2019 ]
1 answer
A
I've checked a couple versions of the 2017 Nissan Frontiers and this speaker does not fit as it needs more mounting height than the doors have for speakers. Its not the same dimensions as the GTO629 was, but even with those changes, the GTO629 didn't fit either. We have speakers that can fit and advisors that you can call on 1-800-324-9695 who will be happy to help you find the best one for your goals. My Bio: https://www.crutchfield.com/bio/Paul
[ Paul  May 18, 2019 ]  Staff

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