Item# GTO6428



120-watt, two-way, 4" x 6" speakers


$99.95 per pair


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Pop the JBL® GTO6428 in any factory location with no special tools or modifications. You’ll suddenly have that big, booming bass and rich, crisp, detailed sound the JBL brand is famous for. In your car. Yes, your car. You’ll hear the power of JBL-patented Plus One® woofer cones and a My-Ti™ tweeter. A very large voice coil, like the best home audio speakers have, delivers crystal-clear, extended high frequencies for audiophile-quality performance. This is attention to detail rarely given to car audio. And it changes everything.

What's in the box?

  • (2) GTO6428 4”x6” two-way loudspeakers
  • (1) Owner's Manual

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The latest owner's manuals, quick start guides, and documents.

General Specifications

Grand Touring
4 x 6

Audio Specifications

Power Handling (RMS)
Nominal Impedance
2 ohms
(2.83V@1m) 91dB
Power Handling (Peak)
Frequency Response

Speaker Specifications

Crossover Frequencies
Low-Frequency Transducer
PlusOne® HCL™ honeycomb-laminate cone
High-Frequency Transducer
25mm (1") edge-driven My-Ti™ dome


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.

More true sound from built-in crossover network

By using a built-in crossover network with advanced high and low pass filters, the GTO6428 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.

Can be safely driven by any head unit

The GTO6428 is compatible with aftermarket head units and factory-installed systems. Designed as replacements for impotent factory-installed OEM speakers, the GTO6428 is easily installed without any special tools or modifications.

True 4-ohm topology performance

For the most powerful performance, the GTO6428 makes the best use of any amplifier by providing an optimum 2-ohm load. It uses a voice coil with lower impedance than that in 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 120 watts of peak power handling. Hit the gas and have fun.

Easy installation in any factory location

Doing it yourself? The GTO6428 easily installs into nearly any factory 4-inch by 6-inch location without any special tools or additional modifications. You'll be listening to your new JBL® speakers in no time at all.

Warranty 1 Year Warranty

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be elibible for exchange.

Request an Exchange

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