180-Watt, Two-Way 6-1/2" Speaker System

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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® GTO628 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.

Item# GTO628

General Specifications

Size 6-1/2
Type Two-Way
Series Grand Touring

Audio Specifications

Power Handling (Peak) 180W
Sensitivity (2.83V@1m) 92dB
Power Handling (RMS) 60W
Nominal Impedance 2 ohms
Frequency Response 50Hz–21kHz

Speaker Specifications

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


Mounting Cutout Diameter (mm) 133
Mounting Depth (mm) 52
External Diameter (mm) 159
External Diameter (in) 6-1/4
Mounting Cutout Diameter (in) 5-1/4
Mounting Depth (in) 2-1/16
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Spec Sheet (EN)

English 615 KB
  • (2) GTO628 6-1-2” two-way loudspeakers
  • (1) Owner's Manual

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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 eligible for exchange.

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