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The JBL® GTO 6429 is a “factory-sized,” 135 watts peak (45 watts RMS), two-way coaxial speaker system intended to be a direct factory replacement for many of today’s vehicles with 4" x 6" (100mm x 150mm) speaker locations, generally located in the dashboard. It features an edge-driven soft dome tweeter, fiberglass reinforced plastic (FRP frame) and Plus One® (U.S. patent no. 7,548,631) woofer cones. The GTO-6429 includes additional mounting adapter rings to increase ease of fit in vehicles with varied mounting-hardware patterns. There’s nothing else to buy. You need only enjoy the sound of your new speakers that bring the music to life in your car.

What's In The Box

  • 2 GTO 6429 coaxial speakers
  • 2 mounting ring adapters
  • Miscellaneous mounting hardware
  • Owner’s/installation manual

Product Specs, Manuals & Compatibility

Compatible with TVs, Laptops, and Mobile devices
Manuals & Downloads
General Specifications
Size
4" x 6"
Type
Coaxial
Audio Specifications
Power Handling (Peak)
135W
Frequency Response
75Hz-21kHz
Power Handling (RMS)
5W-50W
Nominal Impedance
3 ohms
Sensitivity
(2.83V/1m) 92dB
Dimensions
External Diameter (in)
6-1/8 x 3-3/4
External Diameter (mm)
156 x 84
Mounting Cutout Diameter (in)
5-3/4 x 3-5/16
Mounting Cutout Diameter (mm)
145 x 84
Mounting Depth (in)
1-11/16
Mounting Depth (mm)
43
Warranty
USA Warranty Length
1 Year Warranty
Product Features
25 – 135 watts suggested amplifier power range
JBL engineers designed the GTO 6429 coaxial speaker to produce strong, clear sound from a head-unit or amplifier capable of delivering up to 135 watts of power. This makes the GTO 6429 an ideal match to systems powered with head-unit or factory-amplifier power levels. Even better, the speaker matches many of the GTO Series amplifier combinations. As a result, it can keep up with systems that feature one or more subwoofers. And its great power-handling specifications increase reliability over the lifetime of the speaker.
Patented Plus One woofer-cone technology
The GTO 6429’s Plus One carbon-injected cones provide more overall speaker cone area than other cones in the speaker’s class. With an effective increase in cone area, the speaker radiates more air. Also, its carbon-injected cone material produces a lighter and stiffer cone. The result is a better low-frequency response and a greater ability to make those important musical notes that people often associate with larger speaker sizes.
Fiberglass-reinforced plastic (FRP) frames
The fiberglass-reinforced plastic (FRP) frames used in the GTO 6429 speaker resist warping even when you mount them on uneven surfaces. Their nonmagnetic carbon composite helps to control the magnet’s energy and deliver it to the voice coil instead of wasting it as heat. What’s more, the plastic doesn’t resonate. The result of this control is accurate sound in your car.
Three-ohm voice coils
Three-ohm voice coils in GTO 6429 speakers allow compensation for any added resistance by thin factory-installed speaker wiring. They also provide more output than factory-installed speakers in the same class.
Vented magnet assemblies
GTO 6429 speakers feature vented magnet assemblies to help cool the voice coil. Keeping the voice coil cool adds to increased reliability from greater power handling and helps eliminate power compression that can distort the speakers’ sound.
Frequency response to 21kHz
A wide frequency response that extends beyond 20kHz helps to compensate for speaker-placement variations in your car and for human hearing deficiencies in the high-frequency spectrum above 15kHz. The result is that GTO 6429 speakers deliver more of the full-range frequency response that you associate with great sound.
High sensitivity (92dB @2.83V/1m)
High sensitivity allows a wider range of power to provide great sound without overdriving the audio system. With a sensitivity of 92 decibels at 2.83 volts/1 meter, the GTO 6429 speakers achieve excellent volume and musicality with as little as 5 watts RMS. That means better performance overall with even very moderate power driving the speaker. And better performance makes the speakers an ideal replacement for factory speakers as well as for any aftermarket speaker installation.
Speaker adapter mounting rings included
The GTO 6429 speakers include an additional set of mounting adapter rings to allow the speakers to fit securely in a broad range of factory speaker openings that match this size.
Industry-leading product development and evaluation standards
JBL technicians specifically evaluate each GTO Series speaker model in the development stages for overall and vocal-range voicing, intermodulation distortion (IMD) and performance at the limits of electrical and mechanical design. We also test according to strict carmaker reliability standards, both in development and in final production. All of these details are virtually unique to JBL car speakers, as most competitors do not even come close to this level of detail and oversight.
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Performance: reviews:: 26233908271484448 - 26233908282306448 = 10822 micro seconds

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GTO6429 - 135-watt, 4
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Item #: GTO6429

GTO6429

A 4" x 6" coaxial that installs easily and delivers true sound.
$119.95 per pair
Availability: In-stock and ready to ship.
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Performance: details:: 26233908290347448 - 26233908330762448 = 40415 micro seconds
Performance: PDP Total:: 26233907806728448 - 26233908337222448 = 530494 micro seconds