Rating Content :
GTO8628 is rated 5.0 out of 5 by 1.
Performance: JBL Header Total:: 37853192617998225 - 37853192872435225 = 254437 micro seconds
Performance: product-images:: 37853192876663225 - 37853192878423225 = 1760 micro seconds
Imagine car audio so full of big boom, soundstage and detail, you’ll want to flick your rear view mirror just to see what your passengers in the back think. The JBL® GTO8628 includes JBL engineering triumphs like a Plus One® woofer cone, a My-Ti™ tweeter, UniPivot™ rotating tweeter and tweeter-level control. Have a superior ride, just like that.

What's In The Box

  • (2) GTO8628 6”x8”/5”x7” two-way loudspeaker
  • (1) Owner's Manual

Product Specs, Manuals & Compatibility

Compatible with TVs, Laptops, and Mobile devices
Manuals & Downloads
General Specifications
5 x 7
Grand Touring
Audio Specifications
Frequency Response
Power Handling (Peak)
Power Handling (RMS)
Nominal Impedance
2 ohms
Speaker Specifications
HF cut: 0dB/-3dB
Crossover Frequencies
Low-Frequency Transducer
PlusOne® HCL™ honeycomb-laminate cone
High-Frequency Transducer
25mm (1") edge-driven My-Ti™ dome, pivoting
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 cones
The JBL-only Plus One® woofer cone (patent # 7,548,631 B2) is exceptionally stiff, lightweight and has up to 25 percent more active surface area than you’ll ever find on competing models of the same size. You get an audible increase in bass output and efficiency.
Increased power handling with My-Ti™ tweeters
Home theater speakers have edge-driven tweeters. So can your car. My-Ti™ tweeters deliver increased power handling and efficiency with reduced distortion. A Mylar®/titanium composite dome makes way for open, smooth spacious sound and a seamless transition between the middle and high frequencies.
Optimal imaging with UniPivot™ rotating tweeter
Another JBL® feat of engineering: You can rotate the tweeter pod nearly 350 degrees to aim it at the listening position for improved high-frequency response and optimal imaging.
Outstanding audio output
This speaker offers 60 watts RMS, 180 watts of peak power handling, 92dB sensitivity, 2-ohm impedance and an accurate frequency response of 50Hz to 21kHz. Hit the gas and have fun.
Can be driven by any head unit
This JBL® Grand Touring™ Series speaker makes the best use of any amplifier by providing an optimum 2-ohm load. They use 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. And it is designed to fit right into factory locations with little or no modification.
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Performance: features:: 37853192879446225 - 37853192904698225 = 25252 micro seconds
Performance: reviews:: 37853192909811225 - 37853192922661225 = 12850 micro seconds

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GTO8628 - 180-watt, coaxial 5
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Performance: dealer:: 37853192926147225 - 37853192932835225 = 6688 micro seconds
Item #: GTO8628


The drop-in speaker upgrade your door, side panel or rear deck is waiting for.
$99.95 per pair
Availability: In-stock and ready to ship.
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Performance: details:: 37853192940408225 - 37853193002210225 = 61802 micro seconds
Performance: PDP Total:: 37853192612883225 - 37853193011045225 = 398162 micro seconds