Rating Content :
GTO628 is rated 5.0 out of 5 by 1.
Performance: JBL Header Total:: 37263736837367713 - 37263737206158713 = 368791 micro seconds
Performance: product-images:: 37263737221244713 - 37263737222808713 = 1564 micro seconds
Hit the road with the big, rich, detailed sound the JBL® brand is known for. In your car. Yes, your car. In addition to the serious bass of a Plus One® woofer cone, an edge-driven My-Ti™ tweeter produces extended high frequencies like the best home audio speakers do. This is attention to detail rarely given to car audio. And it changes everything.

What's In The Box

  • (2) GTO628 6-1-2” two-way loudspeakers
  • (1) Owner's Manual

Product Specs, Manuals & Compatibility

Compatible with TVs, Laptops, and Mobile devices
Manuals & Downloads
General Specifications
Grand Touring
Audio Specifications
Power Handling (Peak)
(2.83V@1m) 92dB
Power Handling (RMS)
Nominal Impedance
2 ohms
Frequency Response
Speaker Specifications
High-Frequency Transducer
25mm (1") edge-driven My-Ti™ dome, pivoting
Low-Frequency Transducer
PlusOne® HCL™ honeycomb-laminate cone
Crossover Frequencies
HF cut: 0dB/-3dB
External Diameter (in)
External Diameter (mm)
Mounting Cutout Diameter (in)
Mounting Cutout Diameter (mm)
Mounting Depth (in)
Mounting Depth (mm)
USA Warranty Length
1 Year Warranty
Product Features
Patented Plus One® woofer cone
The JBL-only Plus-One® woofer cone is exceptionally stiff and lightweight, with up to 25 percent more active surface area than you’ll ever find on competing models of the same size. You get an audible boost in bass output and efficiency.
Home theater-quality tweeter
Listen loud. It’s a high-bandwidth, edge-driven dome tweeter with a large voice coil, like high-end home audio loudspeakers. The My-Ti™ construction (a proprietary Mylar-titanium composite) delivers great power handling. Extended high frequencies. And seamless integration with the woofer.
UniPivot™ rotating tweeter
Another JBL® feat of engineering: You can rotate the speaker nearly 360 degrees to point at the listening position for better high-frequency response. You get control of imaging and the soundstage even if the speaker has to be mounted low, somewhere in your car door.
More true sound from built-in crossover network
By using a built-in crossover network with advanced high and low pass filters, the GTO628 creates a smooth transition between the woofer and tweeter. The result? Midrange vocals that sound so natural and lifelike, you’d think the artist was sitting in the passenger seat.
Easy, patented Intermount III mounting system
Intermount III makes an easy installation easier still. Factory-built 6-1/2-inch locations can vary in size from 6 inches to 6-3/4 inches, but with JBL® installation rings (included), even if you are upgrading an older set of aftermarket speakers, replacing them is simple.
Outstanding audio output
This muscular speaker system offers 70 watts RMS and 210 watts of peak power handling and 92dB sensitivity. Hit the gas and have fun.
True 4-ohm topology performance
For the most powerful performance, the GTO628 makes the best use of any amplifier by providing an optimum 2-ohm load. It uses a lower-impedance voice coil than a typical speaker to extract the most power and performance possible from all amplifiers engineered to drive loads of 4 ohms or less.
Outstanding audio output
This muscular speaker offers 180 watts of peak power handling and a frequency response of 50Hz to 21kHz. Hit the gas and have fun.
Hide Specs
Performance: features:: 37263737223680713 - 37263737251029713 = 27349 micro seconds
Performance: reviews:: 37263737260930713 - 37263737282507713 = 21577 micro seconds

Buy Now

GTO628 - 180-watt, two-way, 6-1/2
Also in Stock at

Please enter all the information below to find a dealer.





Performance: dealer:: 37263737283680713 - 37263737290743713 = 7063 micro seconds
Item #: GTO628


Signature JBL concert-quality sound in your car.
$99.95 per pair
Availability: In-stock and ready to ship.
Why buy direct from JBL.com?
Free Ground Shipping
Free Returns
Lifetime Support
Performance: details:: 37263737297917713 - 37263737393971713 = 96054 micro seconds
Performance: PDP Total:: 37263736833831713 - 37263737403323713 = 569492 micro seconds