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GTO329

GTO329_JBL_US GTO329_JBL_US

Coaxial 3-1/2" (87mm) factory-sized replacement speakers

A 3-1/2" coaxial that drops right in and sounds fantastic.

  • 25 – 75 watts suggested amplifier power range
  • Patented Plus One woofer-cone technology
  • Fiberglass-reinforced plastic (FRP) frames

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$99.95 per pair


Availability: In-stock and ready to ship.

Model #: GTO329
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GTO329

The JBL® GTO Series of high-fidelity automotive speakers feature innovative technologies that we’ve engineered for the environment and for the conditions in today’s cars to help them deliver exceptional sound. Using the Plus One® (U.S. patent no. 7,548,631) woofer-cone technology and rugged construction materials such as carbon-composite frames, butyl-rubber surrounds and fabric-tweeter diaphragms, plus UniPivot™ (U.S. patent no. 6,002,780) tweeter positioning on select coaxial models and the I-Mount™ (U.S. patent no. 5,859,917) system for the tweeters in the component separates, the GTO Series automotive speakers are the ideal upgrade for any car’s audio system.

Select features to learn more:

  • 25 – 75 watts suggested amplifier power range

    25 – 75 watts suggested amplifier power range

    JBL engineers designed the GTO329 coaxial speaker to produce exceptional, clear sound from a head-unit or amplifier capable of delivering up to 75 watts of power. This makes the GTO329 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 also increase reliability over the lifetime of the speaker.
  • Patented Plus One woofer-cone technology

    Patented Plus One woofer-cone technology

    The GTO 329’s Plus One carbon-injected cones provide more overall speaker-cone area than other cones in its 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

    Fiberglass-reinforced plastic (FRP) frames

    The fiberglass-reinforced plastic (FRP) frames used in the JBL GTO 329 woofer/midrange drivers 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

    Three-ohm voice coils in the JBL GTO 329 speakers compensate for the added resistance by thin factory-installed speaker wiring. They also provide more output than factory-installed speakers in the speaker’s class.
  • Vented magnet assemblies

    Vented magnet assemblies

    The JBL GTO 329 speakers feature vented magnet assemblies on the woofer/midrange driver 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 up to 21kHz

    Frequency response up to 21kHz

    A wide frequency response that extends beyond 20kHz helps compensate for speaker-placement variations in your car and for human hearing deficiencies in the high-frequency spectrum above 15kHz. The result is that the JBL GTO 329 coaxial speakers deliver more of the full-range frequency response that you associate with great sound.
  • High sensitivity (91dB@2.83V/1m)

    High sensitivity (91dB@2.83V/1m)

    High sensitivity allows a wider range of power to provide great sound without overdriving the audio system. With sensitivity of 91 decibels at 2.83 volts/1 meter, the JBL GTO 329 speaker achieves excellent volume and musicality with as little as 5 watts RMS. That means better overall performance with moderate power driving the speaker. And better performance makes these speakers ideal replacements for factory speakers as well as for any aftermarket speaker installation.
  • Industry-leading product development and evaluation standards

    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.

What's in the box:

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    What's in the box

    • • 2 GTO 329 loudspeakers
    • • Owner’s/installation manual

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