Sales and pre-sale assistance: 1-800-336-4525
Technical help: 1-800-336-4525
Parts and accessories: 1-800-336-4525
About this product
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® GTO428 includes JBL® engineering triumphs like a Plus One® woofer cone, a My-Ti™ tweeter and a Unipoint™ rotating tweeter mount. Have a superior ride, just like that.
Warranty: 1 Year Warranty
Replaced by: GTO427
Your GTO428 may currently be in-warranty.
Your model might be eligible for direct factory exchange under our warranty program. If so, and if you purchased your product online or from an authorized local retailer, you may use this form to request an exchange. Purchases made from an unauthorized dealer will not be eligible for exchange.
Products under warranty may qualify for an exchange with a valid receipt.
Products out of warranty need to be serviced by a JBL-approved service center. Please call 1-800-336-4525 to find authorized service centers near you.FIND LOCATIONS
|Nominal Impedance||2 ohms|
|Power Handling (Peak)||105W|
|Power Handling (RMS)||35W|
|High-Frequency Transducer||25mm (1") balanced-dome My-Ti™ dome|
|Low-Frequency Transducer||PlusOne® HCL™ honeycomb-laminate cone|
|External Diameter (in)||3-15/16|
|External Diameter (mm)||100|
|Mounting Cutout Diameter (in)||3-1/2|
|Mounting Cutout Diameter (mm)||89|
|Mounting Depth (in)||2|
|Mounting Depth (mm)||51|
|USA Warranty Length||1 Year Warranty|