Item# GTO528



135-Watt, Two-Way 5-1/4" Speaker System
$54.99 per pair $99.95


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Does It Fit My Car?


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® GTO528 includes JBL® engineering triumphs like a Plus One® woofer cone, a My-Ti™ tweeter and a Unipivot™ rotating tweeter mount. Have a superior ride, just like that.

What's in the box?

  • (2) GTO528 5-1/4” two-way loudspeakers
  • (1) Owner's Manual

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General Specifications

Grand Touring

Audio Specifications

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

Speaker Specifications

Low-Frequency Transducer
PlusOne® HCL™ honeycomb-laminate cone
Crossover Frequencies
High-Frequency Transducer
25mm (1") edge-driven My-Ti™ dome, pivoting
HF cut: 0dB/-3dB


Patented Plus One® woofer cones

The JBL-only Plus One® woofer cone (patent no 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

My-Ti™ tweeters deliver increased power handling, reduced distortion and increased efficiency. 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 Unipoint™ rotating tweeter

Another JBL® feat of engineering: You can rotate the tweeter pod nearly 350 degrees to aim it at the listening position for better high-frequency response and optimal imaging.

Adjustable Tweeter Level

The GTO 528 allows the tweeter level to be adjusted 0 to +3 decibels to compensate for low and off-axis mounting positions or road noise.

Outstanding audio output

This speaker offers 45 watts RMS, 135 watts of peak power handling, 91dB sensitivity, 2 ohm impedance, and an accurate frequency response of 65Hz to 21kHz. Hit the gas and have fun.

Can be driven by any head unit

This JBL® Grand Touring™ Series speaker is designed to fit right into factory locations with little or no modification.

True 4 Ohm Technology

Low-Impedance, three ohm voice coils compensate for the undergauged speaker wiring found in many of today's cars, and make the most of every watt your amplifier or head unit can deliver.

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

Product Support

Call us: 1.800.336.4525

  • Sales and pre-sale assistance
  • Technical help
  • Parts and accessories